Making Way for the Jumbo Challenge

The Elephant Task Force Report advocates transparency in all aspects of elephant conservation and calls for an administrative overhaul both at the union and state levels. As admirable as this effort is, do some of the recommendations need rethinking?

Prior to the software buzz, a bejewelled Maharaja on an elephant was an important brand icon for India. This acted as an important symbol for promoting the tourism industry. But in recent times ‘brand elephant’ has suffered a loss of reputation, at least in some parts of rural India where farmers suffer crop loss or injury/death of near and dear ones. Though some of us strongly advocate the preservation of elephants, certain sections of society, especially those who live in close proximity to this megaherbivore, do not share our sentiments about these difficult neighbours.

At the other end of the spectrum infrastructure project proponents (though crucial for the country’s economic growth) have knowingly or unknowingly ensured fragmentation and degradation of elephant habitats at a   scale and pace that is monstrous. Hence, today, saving a large wildlife species such as the elephant has become the ultimate test of society’s willingness to conserve wildlife. India hosts the largest Asian elephant population and with an estimated 26,000 elephants it is home to half the world’s population. These pachyderms are spread over a geographical area of about 110,000 sq km, sixty percent of which is declared as 32 Elephant Reserves (ER).

A different concept than the conventional Protected Areas (PAs), ERs consist of a mixture of land categories. PAs (30%), Reserved Forests (40%) and private lands (30%) form the land tenure of ERs. Securing this landscape in pursuit of saving a flagship species is a challenging and daunting task, particularly as degrees of protection and land ownership vary within ERs. Combined with it is the ever expanding economy and crushing human numbers competing for space, sometimes with elephants. This is perhaps true for all large vertebrates that demand specialised food habits and/or range over wide areas. However, due its ability to inflict human fatalities, the conservation of elephants is a mammoth task compared to the conservation of any of the other species.

The increased tension due to human-elephant conflict and rampant retaliatory killing of elephants prompted the central Government to set up the Elephant Task Force (ETF) along the lines of the Tiger Task Force that was set up earlier in the wake of the tiger crisis looming over the nation. The import- ant assignment of ETF was to bring in long-term, pragmatic solutions for elephant conservation.

Interestingly, the task force was headed by a wildlife historian and political analyst, which is an indication of the issues related to elephant conservation that encompasses the broader social milieu. Other members of the task force comprised elephant biologists, conservation and animal welfare activists, and a veterinarian. The report was developed based on country-wide consultations with a wide array of people including people affected by elephants, elected representatives, officials of forest departments, wildlife biologists, conservation and welfare activists, mahouts, veterinarians, temple committees, and elephant owners, attempting a democratic process.

‘Gajah: Securing the future for elephants in India’, was recently submitted to the Government sans the intense media glare that the Tiger Task Force attracted. The report advocates transparency in all aspects of elephant conservation, and it is admirable that the report itself was immediately made accessible to the public on the Ministry of Environment and Forests’ website. The ETF has focused on a wide range of issues such as the elephant’s spread in the country, governance, habitat loss, protection and habitat management, captive elephants, human-elephant conflict, elephant research, and outreach.

Elephants and governance
Few Government-appointed committees have been critical about the way the public institution functions. Calling for an administrative overhaul both at the union and state level, ETF notes that there is lack of focus and attention at the highest level of the Government. ETF comments that though Project Elephant was set up in 1992 it has been “unable to take up leadership in elephant conservation”. A statutory body similar to the National Tiger Conservation Authority is proposed. This new body, National Elephant Conservation Authority (NECA) would require amendments in the Wild Life Protection Act 1972 (WLPA), to give it teeth under the law. A budget of Rs 600 crore (US $129 million) has been proposed under the 12th five-year plan for NECA.

In a progressive idea, ETF recommends lateral recruitment of non-governmental personnel with requisite skills to be appointed in the NECA at the regional levels. To improve governance in management, Operational Reserve Level Management Advisory Committees comprising of elected representatives (MLAs, Zilla Panchayat, Gram Panchayat and Gram Sabha members), local conservationists, officers of railways, veterinary, and other departments, which would hold public hearings, are to be setup. An important feature that’s missing in our PA management is objective, ecological, and administrative assessment of performance. Independent evaluation of the ERs with performance indicators to measure progress is recommended to bring in transparency.

Defragmenting elephant habitats
Recently there have been increased debates about the role of PAs in wildlife conservation. However, with crisis looming over some habitat specialist species it is becoming clearer that PAs act as core sites for source populations. Re-emphasising this, ETF calls PAs indispensable for elephant survival and has suggested that PAs be expanded to include critical habitats and corridors or else be declared as Community or Conservation Reserves as found fit.

Expanding or declaring new PAs, however small they are, is a herculean task in the current socio-political situation. Opposing interests, whether legitimate or not, are too many. Hence declaring elephant corridors, as part of the PAs that as suggested by the ETF would be a challenging job to accomplish. The world over and in India elephants have experienced massive contractions of their geographical range due to modifications of their habitats and landscapes. This collapse of range needs to be halted if wide-ranging species have to be saved, and saved with minimum conflict with humans. Larger external pressures have pushed elephants into fragmented habitats and this needs larger habitat management processes.

To reduce further fragmentation of elephant habitats it is recommended that entire ERs are declared as Ecologically Sensitive Areas under the Environment Protection Act. The EFT suggests that infrastructure development like mining within ERs be checked or permitted under strict ecological safety standards, and urges continuance of local livelihood activities subject to existing norms. To check diverting wildlife habitats without species specific criteria, a new approach termed as Elephant-Specific EIA (Environmental Impact Assessment) is suggested for permitting developmental projects within ERs. The ETF has also recognised the long pending issue of quality and rigor of EIAs and licensing consultants conducting EIAs.

Civil society has identified 88 critical elephant corridors across the country based on various ecological and social parameters. ETF has ranked the importance of these corridors and a Rs 200 crore (US$ 43 million) budget for corridor securement is proposed under NECA. Apart from this it is also suggested to use Compensatory Afforestation Fund Management and Planning Authority (CAMPA)  for habitat consolidation and in particular for purchasing corridors. The corridors have been divided into two categories based on ecological priority and feasibility.

The report calls for rationalisation of ER boundaries based on ecological principles rather than the current ad-hoc boundaries. With this background the ETF has identified 10 elephant landscapes for prioritising suggested activities. There are few cases where forest land encroachment, especially for developmental activities or commercial plantations, has been dealt with seriously in the country. This soft approach on a serious issue has bolstered forest encroachers. On a positive note ETF has suggested amendment of WLPA so that a minimum fine of Rs 10 lakh and imprisonment of not less than two years be imposed on encroachers in ERs. On the issue of linear fragmentations such as railway tracks, roads, and high tension power lines, several suggestions including regulating night traffic passing through elephant corridors and bringing railway projects under the purview of EIA have been advised.

Other serious concerns
Another critical issue addressed is the way elephant habitats are managed in the name of ‘habitat improvement’. The report has set guidelines on management of surface water, forest road construction, and soil and moisture conservation activities in elephant habitats. This is an effort to inculcate scientific management of habitats and also prevent ‘leakage’ of conservation funds.

Applying the precautionary principle on the important international issue, opening of ivory trade finds no support in the report as it states that “no rationale, whether ecological, economic and ethical can justify international ivory trade.” Expressing unstinted support for wildlife conservation, the report states “in India species do not always have to pay to survive.” This should answer questions of culling, trophy hunting, and other similar conservation paradigms. Issues that are perhaps ubiquitous to most tropical countries such  as improving enforcement effectiveness and staff recruitment at lower levels also find place in the report.

Education and outreach
Broaching the domain of conservation education, which is focused more on urbanites, the report has emphasised enormously on conservation education and outreach for communities living in and around elephant habitats. In a bid to take elephants to people, based on ETF’s suggestion elephant has been declared as a national heritage animal. Hosting the first International Elephant Congress, Elephant Range Exchange Programme, United Nations Day of the Elephants and setting up of the Asian Elephant Forum are other suggestions.

On the flip side
Certain recommendations made by ETF need some rethinking. It has gone with the old model of recommending MPs  to represent in national level committees. Representation of MLAs from high conflict areas in the national level committees is important. The political dynamics of MLAs and MPs are different. Rural communities have an influential political voice but have better access to MLAs rather than MPs. MPs do not rely directly on individual voters to regain political constituencies like MLAs, but operate through other elected representatives and local leaders.

It should be mandatory that there is no financial link between the agency applying for permits and EIA consultants. This issue has been the crux in the bias shown in most EIA reports. It would have been ideal if this gap was identified in the report. Another serious concern in the report’s recommendations is about independent evaluation of reserve management. Though the suggestion of independent evaluation is highly valid, it missed the point that evaluators cannot be people retired from the forest services. As ex-officials evaluating their own colleagues and juniors, the outcomes might be biased.

Bringing paramilitary forces to improve protection might not be an ideal solution. As the report itself has highlighted, elephant conservation is as much a social, economic and political issue as it is biological. Protection forces need considerable understanding of local issues, familiarity with terrain, people (for information gathering), language, and so on. Alien paramilitary forces might only work in terrorist, insurgency infested areas but not under normal circumstances.

Finally
Overall the ETF has shown a strong will to democratise the way elephant conservation needs to go ahead and also how Government appointed committees can perform. Lastly, the task force projects a positive picture that “India can secure the future of elephants and their forest home”. This is unlike several other reports which project a gloomy picture. Hope the recommendations of the task force are implemented by the Government in true spirit.
 

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4.2

2010 Jun

The Curious Case of the Captive Elephant

The Elephant Task Force proposes to eventually ‘phase out’ the use of elephants in commercial captivity through a massive tightening of the law. Not surprisingly, owners are far from happy, and the State Forest Departments in a quandary.

The captive Asian elephant is something of a legal oxymoron. Few other wild animals, Schedule I species at that, are in such extensive commercial use. Some 3,500 elephants in India, mostly captured from the wild, have been trained by human ingenuity to ferry tourists, ‘bless’ the devout, parade in festivals and log timber in forest camps.

Not least because of the oddity of their position, this large section of elephants has slipped through the cracks in the Wildlife Protection Act (WLPA). Whether it is ownership, trade, upkeep, or its use, the captive elephant is exempted from almost every provision the WLPA extends to wildlife.

Unlike all other forms of wildlife, elephants can be ‘owned’ privately while the WLPA specifies that all wildlife is the property of the Government. The only specific reference to captive elephants places them in the same category as bullocks, horses, camels, and other domesticated animals, or “vehicles” despite their very specific ecological needs. The fact, however, that these lacunae in the law have for so long remained unaddressed is indicative of an important cultural reality in India (and several Asian countries): the elephant has, over the centuries, become an integral part of well-entrenched traditional or religious practices and more importantly, a source of livelihood for thousands of mahouts and kavadis.

There are no precise figures for the number of captive elephants India has. But of the estimated 3,500 elephants, half are in northeast India, and another 900 in southern India. Northern and eastern India are thought to have between 200 and 300 each, while western India has some 80. Indeed, the dilemma that these creatures pose and the sheer numbers they represent-they account for approximately 10 percent of all elephants in India-make them impossible to ignore. It was only inevitable, therefore, that the first major report on the status and future of elephants in India, ‘Gajah,’ written by scientists, academics, and activists comprising the 12-member Elephant Task Force, should dedicate an entire chapter to the captive elephant. The report, submitted in August 2010 to the Ministry of Environment and Forests, recommended among other things that the elephant be declared a “heritage animal.”

The report bases itself on the premise-one held by field biologists, scientists and scholars of elephant behaviour that elephants have unusual social complexity, significant cognitive abilities, that they are “self-aware individuals, possessing distinct histories, personalities and interests, and that they are capable of physical and mental suffering.”
Beginning here, the Task Force recommends a string of modifications to the WLPA in an attempt to bring within its umbrella the curious case of the captive elephant. The eventual goal, it adds, must be “the complete phasing out of elephants from commercial captivity.” This somewhat controversial proposition is appended with an acknowledgment, however, that “the elephant is integral to cultures, religions and livelihoods in many parts of India have a long tradition of elephant keeping and handling.” The chapter then sets itself the more immediate target of “improving their condition in captivity” by clamping down on their capture, taming, sale, transfer, and ownership.

The elephants used for logging operations in government forest camps are comparatively in better shape, owing perhaps to their proximity to their natural habitat. But the biggest chunk of captive elephants are in commercial captivity predominantly in temples, circuses, tour operations or used to beg for alms, and the condition of many of them is debatable. And studies have shown that the worst off are temple elephants, an estimated 1,200 of them-being farthest removed from their natural ecological needs. Tethered for days on end, their rearing is often unscientific and their nutritional status poor. This group of elephants is also prone to a variety of ailments from anaemia to foot-sores and tuberculosis. Every now and again there are unsettling reports of temple elephants going ‘beserk,’ breaking loose and even killing people while on a rampage.

The use of elephants in circuses has also caught the attention of the Task Force that has called for its ban. “This category of privately owned elephants should follow the precedent of phasing out as per the 1991 ban of the five categories of wild animals (lion, tiger, leopard, bears and monkeys) in circuses.” It also recommends the prohibition of elephants in weddings, unregulated tourism, public functions, begging, and other forms of entertainment.

If the Task Force has its way, no one but the government would ‘own’ an elephant. The Task Force recommends that the word ‘ownership’ be replaced with ‘guardianship’. Individual State Forest Departments will take over ownership and also establish ‘Captive Elephant Lifetime Care Centres’ to take care of animals abandoned, confiscated, or captured.

Guardians, whether individuals or agencies, should also be given a ‘guardianship certificate’ or ‘passports’ with photographs and complete details of the elephants, which will be micro- chipped “in order to ensure that the elephants enter into a central and state system of monitoring.” If implemented, these and other legal interventions such as the ban on new acquisitions of wild-caught elephants for commercial use, their sale, and ownership could indeed serve to realize the eventual goal of the Task Force, i.e, the phasing out of captive elephants in commercial us.

The proposal has, not surprisingly, met with opposition from owners and temple authorities. October 4, the ‘National Elephant Day’ was observed as a ‘black day’ in Thrissur: the Guruvayur temple here has one of the largest collection of elephants at around 70. The Kerala State Elephant Owners’ Federation and the Kerala State Pooram-Perunnal Festival Coordination Committee said the Task Force had failed to consider “the state’s cultural and religious traditions” and that the Thrissur Pooram that draws in thousands of tourists, will be unimaginable without the caparisoned procession.

And if owners were allowed only a guardianship of their elephants, they argued, the government must take up the responsibility of maintaining elephants. An elephant costs an annual Rs. 3 lakh to maintain and Rs 1.5 lakh to cremate, owners pointed out. The Kerala Forest Department chose not to “antagonise large communities” by enforcing legislation such as this. The department endorsed a “transparent way” of selling, gifting and donating elephants. It also admitted that it cannot take up the ownership of the 800 elephants in the State, the department added.

In another incident a couple of months earlier, in August, the Tamil Nadu forest department kicked up dust when it asked temple authorities to stop using elephants to “bless” Hindu pilgrims. The animals had begun to contract tuberculosis (and possibly even transmit it) from the 500 devotees that touched their trunks everyday. Four elephants had recently died of the disease. Hindu groups however said the ban went “against religious sentiment”.

Scientific studies do establish the practice as a health hazard for elephants and humans. According to a study sponsored by the Bangalore-based non-government organization Asian Nature and Conservation Foundation, one in four temple elephants in the southern states has tuberculosis, a ‘zoonotic’ disease that can be transmitted between humans and animals. The prevalence of the disease was as high as 24 per cent among other privately owned elephants (such as circus elephants and those used for collecting alms), while elephants with the forest department fared much better, with a much smaller 11 per cent testing positive for the bacteria.

Be this as it may, at least two key problems are bound to arise if the Task Force’s recommendations became a reality. One, what would happen to the 5,000 mahouts and kavadis, the primary caretakers of the captive elephant, who would be inevitably “phased out” too? And two, how will the State Forest Departments, with the meager money, space, and personnel at their disposal take on the ownership of hundreds of these beasts that are now in private custody, or bring under their wing every rogue elephant captured in a human-animal conflict situation?

The report does not suggest a long-term vision for mahouts or alternative livelihood options. It does however acknowledge the mahout as the custodian of traditional knowledge about elephant behavior, as the single most important point of con- tact with the elephant, as someone who is paid a pittance by the elephant owner and as deserving “better employee status” with specific laws to their aid. The Task Force recommends that mahouts in forest camps be recruited at the cadre of forest guards and entitled to hardship allowance, accident insurance, and “bonus for well-kept and healthy elephants.” As for mahouts in private employment, their salaries should be at par with the forest department grades, it adds.

As the privately owned elephants are phased out, an already stretched Forest Department will find its responsibilities bloat. As owners of all the State’s captive elephants and the caretakers of the pachyderms captured or seized, the department is likely to find itself in a logistical conundrum, one that the Task Force offers few solutions to. The Task Force does point to the abysmal lack of wildlife vets and paltry infrastructure that leaves elephants largely devoid of professional care. For instance, Karnataka’s Forest Department, which has some 120 elephants in its camps, has no more than three wildlife vets at its disposal. Many of these elephants are captured “rogue” elephants with pellet wounds that need specialized help, the forest department often laments. The report recommends that “Wildlife Veterinary Wings be set up within the state forest department with full promotional opportunities, incentives, and facilities for the veterinarians with options of permanent absorptions.”

It also recommended a host of other interventions besides additions, deletions, and amendments to the WLPA. These include the setting up of Captive Elephant Welfare Committees to assist the State Forest Departments monitor the condition of captive elephants. To begin with, the Task Force suggests a census of the captive elephant-the first ever exercise of its kind if it is carried out. But with livelihoods and businesses at stake and the current capacity of the State Forest Departments, it is anybody’s guess when or how these beasts will be brought under the ambitious umbrella of measures conceived for them.

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4.2

2010 Jun

Editor's note 4.2

Is protecting biodiversity just the job of the government or do people have a say in what action should be taken? The Elephant Task Force (ETF) constituted by the Ministry of Environment and Forests comprised 12 persons from a variety of disciplines. The ETF compiled information critical to the survival of elephants in
India. After inviting input from the public (121 responses), public hearings and field visits, the ETF outlined actions to save the people’s animal. Sanjay Gubbi and Divya Gandhi assess the report within these pages.
The second initiative involving broad public participation, Biodiverity 100, is a unique online campaign launched by Guillome Chaperon and George Monbiot in association with the Guardian that calls for suggestions from people across the world regarding what goverments of the world should do to save biodiversity. This unique campaign has already attracted responses from over a hundred people, and in these pages you will see Current Conservation’s involvement with the program and contributions from our readers.

Capturing Evolution in Real Time

Evolution is continually happening around us and is in some cases even driven by us, writes Jonathan Weiner.

Jonathan Weiner’s book `The Beak of the Finch´ takes the reader on an exciting and illuminating journey on the search for `evolution in real time´. The journey begins and ends on the Galapagos Islands, where Princeton’s famous husband and wife team of biologists, Peter and Rosemary Grant, have been studying Darwin’s finches for more than twenty years. The Grants and their students have been marking and following hundreds of these finches in their pioneering study that demonstrates the processes of natural selection and evolution.

One of the interesting findings from the Grants’ study is that the boundaries between species are constantly being built and rebuilt, and are seldom constant. Weiner also raises the question that if species are in such a constant state of flux, then is it possible to ‘conserve’ a species? The author stresses on the need to redefine what it is that we want to conserve in a particular species, or else be unpleasantly surprised by the results.

Species are adapting and evolving at this very moment, and the author puts together a number of examples that demonstrate how humans have been the cause for the hybridisation or extinction of many species plants and animals. We are also accelerating the evolution of many other species. Across the globe, there is an ongoing arms race between pest and farmer, bacteria and pharmacologist, and pest and bacteria seem to be winning. In Africa, pressures of poaching are pushing the elephant to lose its tusks. Sport fishing, where people are allowed to keep only the larger fish, is selecting for smaller and smaller fish.

Jonathan Weiner’s skills in using metaphor and his lucid style of writing make it a compelling read. The book makes the processes of natural and sexual selection accessible to everyone, and also explains other concepts central to ecology and evolutionary biology. This book won the Pulitzer Prize for General Non-fiction in 1995, as well as the Los Angeles Times Book Prize for Science. This book leaves us feeling that the world around us is suddenly more alive and vibrant, and we realise that we are affected by the same inexorable forces as even the tiniest single-celled organism. To quote one of my favourite lines from the book, “All is flux, everything flows.”

Further reading
Jonathan Weiner. 1994. The Beak of the Finch: A Story of Evolution in Our Time. Knopf.

This article is from issue

4.2

2010 Jun

Big Conservation and Big Business: Joined at the Hip Pocket

When corporations form alliances with conservation NGOs, are they equal partners? With their enormous political and financial clout, corporations hold all the chips while conservation organizations transform from environmental watch-dogs to corporate public relations machines.

At a time when the British Petroleum (BP) oil spill and the Bhopal gas tragedy are in the headlines, Green, Inc. offers an insight into the murky world that lies at the intersection between Big Business and Big International NGOs (BINGOs). Reports of the appalling treatment of traditional and indigenous peoples at the hands of conservation BINGOs started getting louder during the 2000s. In 2004, Mac Chapin, an anthropologist, wrote a seminal essay ‘A Challenge to Conservationists’ in World Watch Magazine chronicling the cynical alliance between conservation BINGOs and Big Business against local people across Latin America’s extensive forests.

As money for conservation became harder and harder to find through the 1990s, the BINGOs increasingly banked on a lucrative source of revenue – the corporate sector. In return for the favour, executives from these donor companies sat on the boards and councils of the charitable organisations whose integrity in the conservation of wildlife and ecosystems became increasingly compromised. The NGOs, however, defended their strategy by saying that the alliance provided them with leverage that they did not otherwise possess, and that they were actively advising the companies on best environmental practises for the benefit of ecosystems. But when large extractive industries decimated forests in search of oil and minerals, these BINGOs were accused of mutely watching, or even providing validation for the companies’ activities. Instead of supporting the struggle, the local people were waging against this destruction, the conservation organisations denounced the indigenous peoples who had been living in these forests for centuries, blaming them for the loss of biodiversity.

When corporations form alliances with conservation NGOs, are they equal partners? With their enormous political and financial clout, corporations hold all the chips while conservation organizations transform from environmental watch-dogs to corporate public relations machines. At a time when the British Petroleum (BP) oil spill and the Bhopal gas tragedy are in the headlines, Green, Inc. offers an insight into the murky world that  lies at the intersection between Big Business and Big International NGOs (BINGOs). Reports of the appalling treatment of traditional and indigenous peoples at the hands of conservation BINGOs started getting louder during the 2000s. In 2004, Mac Chapin, an anthropologist, wrote a seminal essay ‘A Challenge to Conservationists’ in World Watch Magazine chronicling  the cynical alliance between conservation BINGOS lobbied for their removal and on occasion even labeled their desperate attempts at saving their forest homes as terrorism.

As Chapin points out, conservation NGOs staffed primarily by biologists were more conversant with saving natural resources and had no expertise in handling people issues. This is where Green, Inc., is enlightening. A former journalist who worked for a time at Conservation International, she is in a unique position to narrate this story. At the heart of her book is the question: Are conservation NGOs and large corporations equal partners in such alliances? With their enormous political and financial clout, corporations hold all the chips while conservation organisations transform from environmental watchdogs to corporate PR machines.

In the developing world, where these multi-billion dollar conservation organisations fund local groups, they use their considerable clout to overrule indigenous struggles against forces that are detrimental to conservation. For example, regional conservation groups had been pressurising Tata Steel and Larsen & Toubro to move the Dhamra port from its current ecologically sensitive location on India’s east coast. However, with the arrival of IUCN as official consultants to the project, local opposition was steamrolled and ‘reputation insurance’ was provided to the port promoters. The international NGO’s advice will at best prevent some turtle mortality whereas the activities of the port threaten the entire nesting habitat of sea turtles in Gahirmatha as well as the nearby mangrove forests of Bhitarkanika, jeopardising the last remaining stronghold of the saltwater crocodile in India, and future generations of countless life forms and the habitats as we know them today.

In October 2002, the then-CEO of Dow Chemicals (the company that bought Union Carbide), Michael Parker, was addressing 500 guests at a $75-a-plate event in Houston, Texas. The occasion: He was receiving an award for ‘Dow’s contributions to the environment from the Nature Conservancy (TNC)! TNC could not have been unaware that two feisty survivors of the world’s worst industrial disaster in Bhopal, Rashida Bee and Champi Devi Shukla sat in a hunger strike outside the Dow Chemicals’ annual shareholder meeting in Michigan and similar protests outside the UN building in New York earlier that year.

As these BINGOs became bigger with large infusions of corporate donations, it took more and more money to sustain them. At the same time, another drain on conservation money was the huge incomes the CEOs of these large charities earned, which were nearly comparable to their corporate counterparts. The do-good organisations also began to resemble their corporate donors in other ways: MacDonald chronicles the various charges of impropriety against these leaders, such as giving themselves large bonuses, paying for personal expenses, interest-free loans, and so on by dipping into the organisations’ kitty. Few donors investigate how their money is used and are often content with the glossy reports that conservation NGOs produce. Both Chapin & MacDonald argue that NGOs function largely without any regulatory oversight, while even corporations are answerable to their stakeholders.

A couple of months ago, Joe Stephens of the Washington Post revealed that BP gave $ 2 million in donations to Conservation International (CI) and $ 10 million to the TNC plus land assets over the years. BP was represented on CI’s Board as well as on TNC’s International Leadership Council. Yet neither of these two leading conservation organisations could help the British energy conglomerate’s refinery in Texas from being branded as ‘the most polluting plant in the United States. Nor does the partnership appear to have inculcated responsible stewardship of the environment as reports of cutting financial corners, and inadequate precautions emanate after the oil spill in the Gulf of Mexico. Instead, soon after news of the oil spill broke, TNC distanced itself from BP while CI was analysing its ‘reputational risk’. The question then arises, if these environmental NGOs are so quick to cut and run during a calamity when their advice is most needed, what real goals did they achieve during the partnership?

During the recent Copenhagen summit to address climate change a columnist for The Independent, Johann Hari, accused BINGOs of siding with oil and petroleum businesses and the governments of the First World to scuttle any effort to set targets such as capping the rate of increase of temperature, and safe level of carbon dioxide in the atmosphere.

Is collaborating with Big Business a deal with the devil or a pragmatic alliance for conservation? Evidence that they change their destructive practices on the advice of conservation organisations is hard to find. In mid-July 2010, on the eve of releasing the UN report ‘The Economics of Ecosystems and Biodiversity (TEEB) for Business,’ of which he is the Study Leader, Pavan Sukhdev told The Guardian that businesses are “soulless corporations” and called on society to hold them accountable. Reading Green, Inc. is a good first step for any citizen willing to take up such an initiative. While the book focuses on American organisations, much is lost between the cup of donations and the lip of effective conservation action in India too. With large sums of money being spent, it is time someone investigated how much work is actually being done.

Further reading:
Christine MacDonald. 2008. Green, Inc. An environmental insider reveals how a good cause has gone bad. The Lyons Press.

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4.2

2010 Jun

Pages from the Elephant Task Force Report


In 2010, the Ministry for Environment and Forests commissioned a twelve-member task force that examined the plight and future of elephants in India. This motley team of scientists, activists, a veterinar- ian, and a historian came up with a comprehensive analysis of the situation and some radical sugges- tions. In this special section Current Conservation examines the findings of the report and showcases some reviews of this mammoth effort.
Excerpt from the report


Securing the challenge of conserving elephants in the wild and of ensuring humane care in captivity is symbolic of the wider dilemma of living in harmony with nature in India. No animal better symbolises our cultures and few have such major presence across diverse ecosystems as this flagship species. But there is more to securing the future of the elephant than knowledge of its biology.


The ecological and behavioural characteristics of elephants in the wild are the necessary starting point but the challenge of conservation begins within our broader social milieu. As our country’s economic base expands, the challenges for in situ conservation in general and of large vertebrates in particular will be more, not less intense. But the challenge is both societal and scientific.


An India with elephants living securely in the wild, and in humane conditions if in captivity, is still within reach. Such a goal, if attained, not in full measure but very substantially, can have wider resonances. It is also of importance beyond our borders. Possibly as many as six of every ten wild Asian elephants live in India. As for its future, there are grounds for both hope and concern. The most recent estimate of the wild population of elephants in India is over 26000 elephants. While population estimates may be revised as more rigorous techniques are developed, what they do show is that the elephant does not confront crises of the sort the tiger has faced in the recent past. Its visibility and presence across diverse ecosystems is probably greater than that of the magnificent big cat.


India is also to home to 3500 captive elephants, with ancient traditions of captive care. Even as science unlocks secrets of their lives in the wild, new knowledge informs us about their complex social relationships. Forest reservation helps halt agricultural expansion. Protected Areas provide refuges.in India is over 26,000 elephants. While population estimates may be revised as more rigorous techniques are developed, what they do show is that the elephant does not confront crises of the sort the tiger has faced in the recent past. Its visibility and presence across diverse ecosystems is probably greater than that of the magnificent big cat.

Sustained measures have brought the levels of poaching for ivory under control. The respect, tolerance, and fellow feeling accorded to these huge animals by most people have helped their survival. But there is no need for complacence. Poaching of male elephants for tusks has declined but there are well researched populations showing that the after-effects are all too real, with the males being too few and sex ratios heavily skewed towards females. Large developmental and infrastructural projects, when not planned or located with adequate care, are fragmenting habitat, while other local pressures degrade them. Elephants cannot survive simply through strict protection of a few parks and sanctuaries. A sole focus exclusively on Protected Areas, vital as they are, is inadequate for the long-term conservation of this keystone species. Habitats outside reserves may often be crucial, especially if they are corridors or links between large tracts of habitat. Yet, we cannot overlook how economic, social, and cultural demands will take priority outside the boundaries of parks and sanctuaries. Any interventions in such areas have to proceed on a different set of premises involving local stakeholders. Participation and incentives, planning, and conflict management, not merely exclusion, will be critical. Even more so, securing elephants and their habitats and containing conflict with people has the potential to give conservation in India a new direction. It is no mean task and the odds are immense.
But we can succeed. Indeed we must: failure is too high a price to pay. Success requires that policies be better informed with sound science. Landscapes vital to viable populations of elephants have to remain intact. Careful land use planning can minimize the irretrievable loss of fragmenting of habitat.


Gajah and Prajah
The survival of the elephant depends even more on taking its cause to the people. Gajah (the elephant) and Prajah (the people) have to go together. Losing sight of either dimension will harm both. The elephant is more than a symbol of our cultures. It is an animal that has fascinated the best of our poets, writers, and singers across the ages. Its sociability and intelligence are proverbial.
Elephas maximus is a keystone species in the Asian tropical forests. It can act as an umbrella or flagship for conserving biodiversity. Gajah can help save critical parts of the landmass that will be functional ecosystems’ representative of Asia’s biomes, and also serve as a living library for science, store of genetic wealth, and place where we can continue to learn how nature works.


But elephants and people are often in conflict. Asia’s largest vertebrate, requires living space, food, and water, and the search for these often conflicts with human aspirations and needs. Wild populations can only survive if the landscapes they live in remain intact. This was not as much an issue in the past centuries but demographic growth, the expansion of agriculture, and the growth of industry and infrastructure have fragmented habitats. Human-elephant conflict is also a matter of calling for serious attention and action. Every year, over four hundred people lose their lives to elephants, and these are mostly cultivators or labourers. In turn, more than half of the hundred elephants killed each year are in defense of crops.


The stress, suffering, and loss are all too real. It is tragic, for elephants as well as humans are both victims in the conflict. Both are victims of victims. Crop compensation and ex-gratia, payment for the loss of human life (in a very small way) are important facets of elephant conservation in India. But the issue requires a much more sustained and knowledge-based programs that alleviates distress, but also addresses underlying factors that exacerbate the conflict. The best of our country’s skills in science and humane governance have to be brought to bear on this issue.

A future for Gajah

The future of wild elephants rests centrally on how best India secures their habitats. Population and habitat management have to take account of sound ecological principles. But the tactics can vary. The local texture of the land use, society, and culture vary greatly across India’s elephant habitats. The ecological and social diversity is easy to take note of, but difficult to appreciate in coming up with a response. Elephants in India are distributed across four large regions, each with several sub-populations from small herds in isolated forest patches to several thousand elephants within large interconnected landscapes.
The complex contours of the elephant conservation scenario were recognised by a previous Task Force two decades ago and built into the founding principles of Project Elephant in 1992. Since then, Project Elephant has had significant achievements. The 65,000 sq km in the 32 existing and proposed Elephant Reserves include Protected Areas and forests as well as zones of human use and habitation. From the outset, the objective was to consolidate preservation in the parks and sanctuaries. But since these form less than 30 per cent of the Elephant Reserves, it is land-use planning that has been the major challenge in the rest of the landscapes.
Despite significant achievements, there have been shortcomings. The goals were spelt out but the means to get there were lacking, not merely in a financial sense. Coordinated interventions for land-use planning outside Protected Areas or secure corridors required a far wider range of instruments of intervention. Further, the mitigation of conflict in a transparent manner and science-based planning of reserves needed substantial strengthening.
Finally, Project Elephant’s efforts to improve the welfare, status, and standards of captive elephants and their caregivers even when assisted by active civil society groups needed more focus. Above all, the efforts lacked sharp focus and attention at the highest level of government. The fragmentation and degradation of habitat is a serious issue and cannot be addressed without major overhaul both of administrative machinery and of official policies. Timely action can avert crises, and effective governance make people partners in protection.

A mission renewed

There is, to put it simply, a need for a renewed sense of purpose. India can and should take the lead in protecting Asia’s elephants. In doing so, it needs to take Gajah back to the people.
 

This article is from issue

4.2

2010 Jun

Biodiversity 100


In a unique online campaign, George Monbiot and Guillome Chaperon invited public opinion to compile a list of 100 tasks for world governments to undertake in order to tackle the biodiversity crisis. This list was submitted to the Convention on Biological Diversity meeting in Nagoya, Japan in October 2010, and is growing even after this event. Current Conservation is a liaison for Biodiversity 100 within India, and these are some responses compiled by us.

What is the campaign about?
Despite pledges by the G20 countries to stem the loss of biodiversity, their achievements have amounted to little. In many cases, what is lacking is the political commitment to act. With your help, the Biodiversity 100 campaign, hosted by the Guardian, is compiling a list of actions for governments to take. Recommended actions must:

  1. Make a major contribution to safeguard a particular endangered species or area;
  2. Be politically costly to implement or strongly opposed by some interest;
  3. Be strongly and widely supported by scientific evidence.
Listed below are excerpts from actions suggested by several students, biologists and scientists in India. To read the complete action with accompanying material, log on to our website: https:// www.currentconservation.org

* Devcharan Jathanna (devcharan@gmail.com)

Reduce local hunting along the Western Ghats

Local hunting is an under-appreciated and underestimated threat to diversity, affecting mostly medium and large-sized mammals. Unlike commercial hunting, the species targeted include a diverse range (e.g. in the Western Ghats, palm civets, mongooses, giant and flying squirrels, Indian porcupine, Indian pangolin, black-naped hare, wild pig, muntjac, Indian chevrotain, etc.). One of the reasons this is unappreciated is, of course, that most of the species are low profile and some are relatively common. Another reason is that local hunting is usually low-intensity, but the fact that it is sustained, wide- spread, and practiced by many or most house-holds in forest or forest-fringe settlements adds up to an enormous offtake. Local hunting has caused some species to be absent from large areas of otherwise prime habitat, with patchy distributions elsewhere, at extremely low densities over large landscapes. This, in turn, also deeply affects the conservation of charismatic large carnivore species, whose densities have been shown to be primarily determined by prey densities. However, reduction of hunting will require a sensitive and nuanced approach, given that it is a culturally acceptable practice in most areas. This should include a drive to sensitise local communities (who often don’t perceive species declines because there is no benchmark to compare) and forest department field staff, supplemented by enforcement drives (anti- poaching activities usually exclude non-charismatic species).

* Nachiket Kelkar (rainmaker.nsk@gmail.com)

Revive environmental flow by restoring natural river flow regimes

This is an action that will require, in some cases, flow maintenance by dams and barrages, and an immediate halt to upcoming link projects, irrigation canals, and dams to sustain dry-season flows and maintain regularity in flood pulses as per natural dynamics. Highly important for endangered species such as Ganges river dolphins, gharials and aquatic birds. Most important for fishes, as these destructive developments will directly affect fisheries and sustenance of millions of dependent human populations.

Dam deconstruction or downscaling, and regularizing water let-off regimes might be politically very sensitive, as well as strongly opposed by technocrats, industrial, and commercial interests, particularly power plants, hydel projects and water works authorities. Overall the dominant belief of the government has been that river interlinking will solve the nation’s water security issues, particularly in semi-arid landscapes.

Scientific evidence flies in the face of these engineering beliefs for modifying river systems. Impacts of Farakka barrage have been well-documented by SANDRP, New Delhi. The Indira Gandhi Canal meant to bring in irrigation to the arid regions  of Rajasthan was found to be a failure in terms of investment costs and actual returns as water never could reach where it was expected to, leading to dry canals and dug-up wastelands along the canals. Dams in the Pune region, lead to severe shortages in Solapur and southern districts. IWMI reported lower flows than minimum for Godavari, Krishna and other peninsular eastflowing rivers. Dams on the Brahmaputra are bound to cause severe destruction and in general be loss- making because of their incapacity against the mighty river (Kalpavriksh). Tributaries of the Ganga, namely Gandak and Chambal are under severe threat from dams and barrages, which have led to potentially isolated populations of gharials, river dolphins, etc. River dolphins might have become extinct in the upper reaches of the Gandak barrage in Nepal, due to isolation. Commercial fisheries in the lower Ganga region have been severely hit by the Farrakka and Damodar valley projects.

* Tarun Nair (tarunnair1982@gmail.com)

Reviving our rivers

1) Secure the National Chambal Sanctuary, and prevent all extractive activities (sand and stone mining, fishing, and water extraction).
2) Decommission existing irrigation projects (in phases), discontinue further construction and reject all proposed water impoundment and extraction projects.
3) Abandon all plans for River-linking.

The Chambal is one of the last remaining rivers in the greater Gangetic Drainage Basin which has retained significant conservation values. The Chambal contains the largest contiguous and most viable breeding populations of the critically endangered gharial and red-crowned roofed turtle. However, this sanctuary suffers from hydrological modifications due to dams and from the diversion of river water for irrigation, and from activities like sand-mining; fishing, and persistent livestock and human presence.

The 7 major, 12 medium and 134 minor irrigation projects operating in the Chambal river basin, have greatly reduced river flow, and erratic water releases, in the past, have inundated several nesting sites. These notwithstanding, 52 irrigation projects are under construction and 376 projects have been planned in the basin. This will only further impoverish the river and adversely impact the aquatic wildlife of the Chambal river.

Plans to link India’s rivers are unreasonable, and must be abandoned. And we must remember that water, as a resource, may be renewable, but rivers as living entities are not.

Which wild species will benefit from your action?
Species: gharial, Gangetic dolphin, narrow-headed giant soft-shelled turtle, Indian red-crowned roofed turtle, three-striped roofed turtle, Indian skimmer, black-bellied tern, Sarus crane.

Which interest groups or lobbies oppose this action?
1) The political and administrative class who are largely insensitive and feign ignorance towards ecological concerns,
and more often than not, have big stakes in large projects.
2) Sand / stone mining and construction industry.

3) Fish and turtle poachers / contractors.
4) The section of population (mostly urban) receiving most benefits from the dams and water extraction.

Upstream and downstream effects of dams are well-known, stemming from inundation, flow manipulation, and fragmentation. Inundation destroys terrestrial ecosystems and also eliminates turbulent reaches, disfavouring lotic biota. It can cause anoxia, greenhouse gas emission, sedimentation, and an upsurge of nutrient release in new reservoirs. Flow manipulation hinders channel development, drains floodplain wetlands, reduces floodplain productivity, decreases dynamism of deltas, and may cause extensive modification of aquatic communities.

Dams obstruct the dispersal and migration of organisms, and these and other effects have been directly linked to loss of populations and entire species of freshwater fish. Dam removal to restore rivers are the way ahead, and should be seriously considered.

Manisha Tomar (manishatomar3@gmail.com)

Conservation of sloth bear

Conservation action recommended for this species are: A habitat improvement program to ensure restoration of degraded parts of the forest and reduction of disturbance through regular surveliance of forest staff. There should be provision of resources for the local community to reduce extraction from the forest, and fodder and fuel wood plots can be developed within the village environs and the common lands of the villages along the park boundary. There needs to be an increase in awareness and education on the significance of the sloth bear in maintaining the balance of the ecosystem and the benefits obtain from conserving this species and its habitat. A long term ecological study covering all season and forest types in KWLS is of high importance and necessity. Regular monitoring of the indirect and direct evidences along few permanent transects in all the forest types in different season would help in understanding the habitat use and population of sloth bear.

* Latha Anantha (rrckerala@gmail.com)

Declare upper stretches of Chalakudy river in the southern Western Ghats a fish sanctuary

Western Ghats is recognized as one of the eight hottest Biodiversity Hotspots in the world. The rivers in this fragile ecosystem are under severe stress due to deforestation of upper catchments, dams and diversion of water to other basins, sand mining, and pollution from agro and industrial chemicals. The fish diversity and habitats in these rivers are the first to be affected. Out of the 339 fish species found in the Western Ghats rivers, 231 are endemic. Chalakudy river with numerous waterfalls, rapids, and different altitudinal ranges and forest types, holds the maximum fish diversity with 104 fish species in a 144 km small river. The river Cauvery originating from the Western Ghats, though eight times the length of Chalakudy river holds just 146 fish species. Five species ‘new to science’ were discovered for the first time from this river. The flow in Chalakudy River is already reduced and fragmented due to six dams including diversion of 35 % water to another river basin. A seventh large dam (Athirappilly Hydro-Electric Project) is proposed in the river, and this is bound to create larger daily flow fluctuations, which will severely affect fish habitats and breeding. The Government of India and the Kerala Government have the powers to take necessary steps to declare the upper reaches of the Chalakudy river a Fish Sanctuary. This will be the first attempt of its kind in to protect the aquatic biodiversity in any river in India. The declaration of a fish sanctuary will also ensure the overall protection of the river system from further degradation and interventions.

Chalakudy river is recognized as one of the highest fish diversity rivers (fish diversity index 1.79 – 3.9) in India. Latest estimates reveal that 12 species are critically endangered and 22 species are vulnerable as per IUCN standards. Detailed studies carried out by CUSAT reveals that two species are restricted to the new dam site.

* M.O. Anand (moanand@ncf-india.org)

Increase conservation focus on unprotected forests in production landscape through incentives for set-asides and payments for ecological services.

Because of the high levels of biodiversity recorded within them, semi-natural and agricultural production landscapes are today viewed as important allies of formal protected areas in the battle against the ongoing biodiversity crisis. These landscapes may be suitable as breeding and foraging grounds for a number of native wild species, while serving as dispersal corridors for several others. The importance of these landscapes is only likely to increase as time progresses, given the highly limited extent of formal protected areas (around 12% of the earth’s surface, largely concentrated on mountain tops and in the higher latitudes) and the ever-increasing resource demands of a growing human population.

Across the tropics, it is not uncommon to find remnant natural habitats such as forest fragments, strips of riparian vegetation, and swampy fallows embedded within production landscapes. Scientific evidence suggests that these very natural remnants are not only the hotspots of biodiversity within production landscapes, but also serve as important source populations, and ‘stepping-stones’ responsible, to a large extent, for high biodiversity observed at the landscape level.

Consequently, these remnants are also important sources of several ecosystem services – important at scales ranging from local to global. For instance, forest fragments in a coffee-growing landscape in Costa Rica have been found to be economically very valuable by supporting populations of pollinating bees that are important for coffee production. In spite of their overall importance, these remnant habitats, most often occurring on community- or privately-owned land, face the constant threat of clearing for agricultural expansion sometimes even the expansion of so-called ‘biodiversity-friendly’ agriculture. There is, therefore, a pressing need for stronger conservation support for natural habitats occurring within production landscapes. Given that change in these landscapes are driven largely by economics, financial incentives for forest set-asides and payments for ecosystem services are likely to be important.

*Damodaran (damodaran@iimb.ernet.in)

Enforcing ‘the destroyer pays’ principle

In the context of the Strategic Plan for 2020 on biodiversity conservation formulated and discussed by COP 10 at Aichi Nagoya, it is important to emphasize a new principle of ‘destroyer pays’. The ‘ destroyer pays’ principle should focus on corporate undertakings that have destroyed biodiversity through irreversible land use and/or have created collateral ecosystem damage through their production activities.

Extractive industries or amenity providing industries have to pay special royalties (in proportion to sales revenues) to local communities that have been affected by biodiversity loss due to their activities. These revenues should be channelized for biodiversity enhancing activities, including regeneration of endemic species in sites that are suitable for the purpose in and around the activity zones. Also no new projects involving irreversible land use should be permitted in natural areas rich in species endemicity.

*Aarthi Sridhar (aarthi77@gmail.com)

Initiating collaborative management of marine resources

The conservation of endangered marine species by a conventional protection approach has led to deepening conflicts and a deterioration of the condition of traditional fisherfolk in many parts of the globe, thanks to unrealistic fishing restrict- ions and harassment by enforcement officials. The process of the conservation of marine resources must involve the fishing community. And this cannot be effected only by the State without the central involvement of the communities in question.

Marine biodiversity conservation needs to adopt a more transparent and inclusive politics for conservation. The rights of millions of traditional fishing communities over coastal common spaces cannot be denied by governments. At all stages of coastal planning, decision-making and implementation of laws, coastal fishing communities must play a key role. Governments across the world follow a more participatory process in the declaration of Marine Protected Areas. At the same time, rampant coastal development needs to be regulated so that development is rational, environmental impacts are minimal, and benefits reach marginal coastal communities and other sections of society. The rapid establishment and expansion of ports, exploration for oil, and other coastal industries can have devastating impacts on livelihoods and biodiversity. Similarly, commercial fishing must be regulated to minimise impacts on artisanal communities and on endangered species.

Governments need to invest in a wide range of educational programmes that address the needs of urban and rural settings. The fishing communities of the world are bearers of tremendous knowledge about their ecosystems and resources. Fisheries education needs to incorporate special courses that highlight the value, role, and knowledge of fisherfolk in coastal and marine management. In summary, we call for a nationwide community-oriented campaign for the conservation of our coasts and oceans, with careful regulation of activities that have detrimental effects on marine biodiversity and livelihoods, and management actions for the conservation of endangered species and habitats.

*Narayan Sharma (narayansharma77@yahoo.co.uk)

Protect the threatened tropical lowland evergreen rainforests of the Bramhaputra Valley

The upper Brahmaputra valley in northeastern India harbours one of the last remaining tropical lowland evergreen rainforests in the world. These forests contain the highly endangered western hoolock gibbon (Hoolock hoolock), critically endangered tree species (Vatica lanceaefolia), and globally endangered white-winged wood duck (Cairina scutulata). Recently, seven cat species were recorded from Jeypore-upper Dehing forest, the only site worldwide to support such diversity of sympatric cat species. These forests are important for preserving the regional biodiversity and also for supporting local communities who depend on these forests for their livelihood.

However, these forests are threatened by continuous expansion of the tea estates, human settlements, oil exploration, and other developmental activities. Many of these forests, in fact, exist as isolated patches situated in the sea of human-modified landscape and few of them were completely encroached without a trace of forest. Recently, a plan to build a four-lane highway through the upper Dehing forest was mooted. Had this project come through, it would have threatened the survival of several species besides further fragmenting an already fragmented landscape.

*K.M. Jayahari (jayashari@winrockindia.org)

Linking communities and research in the Western Ghats

There should be initiatives to link communities and conservation oriented research activities, in Western Ghats, where empirical research outputs are used to create conservation awareness and the communities are treated as an ecosystem component with due attention paid to their livelihood and other issues. Community issues pertaining to resource sharing with other ecosystem components should be considered as the problem to be addressed through research at par with other ‘conventional’ conservation issues. Amidst the large body of commendable empirical scientific research in ecology in the southern Western Ghats, remarkable failure in bidirectional linking of these research activities with the human component of the ecosystem – information to people for awareness generation and information from the people for research prioritization can be observed. The gap exists due to the inability to translate the empirical research outputs to ecosystem management programs and identifying the community requirements for designing research projects. This would apply particularly to situations where animals are used in traditional practices (eg. Vayanattu Kulavan Theyyam in North Kerala) and human-wildlife conflict situations, where the lack of awareness and non-involement of local people has aggravated conservation problems.

*Kalpana Das (kkalpana1988@gmail.com)

Incorporation of local people into the management of protected areas

India is a country that holds rich cultural and biological diversity. When we look into the broad spectrum of biodiversity we cannot neglect the human dimension. The solution to many conservation problems is to involve the local peoples in efforts and this can be done in many ways. People can be employed as local guides. They can also contribute as patrol guards to check against poaching or illegal felling of timber. Most importantly, local knowledge of flora and fauna can be used to create management plans incorporating traditional methods and customs of protection.

If you would like to contribute to the Biodiversity 100 Campaign, follow the instructions on the Guardian Biodiversity 100 Campaign website, and submit your recommendations online. Make sure that you send us a copy of your action (editor@currentconservation.org), and we will publish them in the following issues.

For details, log on to: https://www.guardian. co.uk/environment/series/biodiversity-100 https://www.currentconservation.org/ biodiversity100
Biodiversity 100 attracted a lot of comments, many of which applied to India as well as other countries. Of these, the ones presented by the campaign to the Convention on Biological Diversity meet in Nagoya, Japan are summarised below. These were also sent in an open letter to the Environment Minister, Shri Jairam Ramesh.

  1. Stop forest destruction to protect the lion-tailed macaque
  2. Ban shark “finning” at sea

Excerpts of some of the other actions recommended for countries including India:

  • Enforcement measures to reduce trawl related mortality over the years haven’t neither been effectively implemented nor have the demands of the fisher folk involved in the process been sought in bringing out an effective An interdisciplinary approach towards turtle conservation as well as alternate solutions for the fisher folk to compensate their losses is required to effectively control the issue.
  • Ban or severely restrict international trawling.
  • Ban all whaling. Without exception
  • Legislate against ballast water discharge and encourage alternatives.
  • Create well-policed wildlife migration corridors in areas at risk from climate disruption and/or human expansion
  • Make organic food production compulsory; ban production of environmental toxins; declare the release of toxins into the environment an international crime
  • Consume less. Legislate against product disposability and waste encouragement; find ways to promote longevity in products. These should be criminal acts of eco vandalism. Zero waste.
  • Create national laws (and subsequent treaties) that radically reduce the size and power of multinational Mega-corps are the primary drivers of unsustainable consumption, eco-social havoc, sabotage of environmental treaties, governmental corruption, widening inequality and endless wars.
  • Support sound, scientifically-based habitat restoration programs.
  • Global corporate social responsibility treaty agreed between major countries placing a common legal framework on how their companies may conduct operations in global South/ countries with less established or less consistently strong legal institutions, so as to give due accord to human rights, biodiversity, etc.
  • Ban the use of all chemical cleaning products.
  • Introduce a carbon tax; ideally a single rate global tax, applied at source, but a coalition of the willing would be fine, as long as imports were levied, and the proceeds applied to sustainability/biodiversity measures.
  •  Control movement of invasive weeds and pests between bioregions and continents, especially through humans trading and transporting species.
  • Encourage companies’ boards to adopt ‘net positive impact’ policies (like that of Rio Tinto) and help governments introduce ‘no net loss/ net positive impact’ requirements into environmental impact assessment and planning regulations. This would mean all developers design new projects (eg mines, energy installations, roads, housing, agriculture) to avoid and minimise harm to biodiversity, undertake restoration work and then (and this is the new bit!) address the residual loss through biodiversity offsets that measurably demonstrate a net positive impact.
  • Stop the production of plastic bottles for water and other drinks or tax very high to dissuade people from buying.
  • Actively encourage smaller families by making contraceptives available to all. The only real menace to endangered species is the menace of human demands on space and commodities.
  • Ban windfarms. The wind turbines are naturally placed in high wind areas, which also attract high numbers of birds.
  • Research funds should go into finding natural solutions to protecting food crops rather than into genetic engineering. Surely “organic farming” needs to be developed.
  • Pass a law to create international integrated habitat network.
  • An immediate cessation of the logging of old-growth forests worldwide, and the creation of old-growth reserves that are permanently spared any sort of felling operations
  • Apply ecological impact tax to everything —until every human recognises and is impacted by our inherent myopic rapaciousness then the biosphere is at dire risk.
This article is from issue

4.2

2010 Jun

What is Conservation Photography?: Evaluating the role of visual literacy in the environmental arena

At the precipice of the contemporary environmental movement is an immediate need for the greater inclusion of strategic visual communication in the form of conservation photography. Conservation photography is simply photography that empowers conservation. It involves the active use of the photographic process and its products, within the parameters of journalistic activity, to achieve concrete conservation outcomes in the context of the bio- cultural landscape.

Conservation photography is not yet widely acknowledged. However, photography has been used as a conservation tool since the early days of landscape photography. William Henry Jackson’s 1871 images of Yellowstone influenced legislators to create the first U.S. National Park to protect wilderness. Today, in a society that depends even more heavily on visual communication platforms to send and receive information, conservation photography can be increasingly employed as a conduit for sharing environmental messages with the public at large. Most significantly, conservation photography practice involves placing images in front of influential people whose decisions can elicit tangible conservation action, such as policy-makers, government officials, funders, and corporations.

The ability of an audience to “read” conservation images is crucial to these processes. Similarly, the creation of conservation imagery requires a photographer who can intentionally construct an authenticate visual representation of an environmental issue or concern. The effectiveness of conservation photography is dependent upon the ability of photographers and viewers to thoughtfully create and interpret visuals- in other words, their ability to be visually literate.


Visual literacy is a burgeoning area of study that involves a critical approach to the creation and interpretation of images. Notable contributor to the field, Cyndi Giorgis, defined visual literacy as the ability to construct meaning from visual images. Anne Bamford, recognized internationally for her research in arts education, emerging literacies and visual communication, described visuals as having the capacity to produce and communicate thoughts and images about reality. This visual vocabulary is a powerful tool that conservation photographers use to express their messages. “For scientists and communicators concerned with the natural environment, visual literacy is of paramount importance. If the images are not comprehensible to a lay audience, the message is lost,” noted Jean Trumbo in a 2007 article on visual literacy and the environment.

Visual literacy involves understanding the language of representation used to create meaning about the world around us through images. In the same way that a sentence can be broken down into parts, an image can be dissected through syntax and semantics. In a visual literacy whitepaper, Bamford described syntax as the building blocks of an image-elements such as perspective and framing, or balance and tone. Semantics, on the other hand, refers to “the way images relate more broadly to issues in the world to gain meaning.” This is addressed in conservation photography by asking such questions as:

  • Who commissioned the image (e.g. government/ corporation/NGO)?
  • Who is the intended viewer (e.g. general public, scientists, policy-makers, government)?
  • What environmental or conservation issue(s) is communicated in the image?
  • What environmental components are emphasized/ omitted?
  • Is there a juxtaposition of opposing elements?
  • Are there opposing conservation attitudes depicted in the image?
  • What are the positive/negative connotations of the image?

 
“Photographs are objects that channel affect in ways that often seem magical.” – Marita Sturken and Lisa Cartwright, 2008

Conservation imagery is adept at conjuring emotions, port- raying the devastating (e.g. an oil-slicked pelican) as well as the stunning (e.g. a verdant rainforest vista). Yet, this emotion is often tied to cultural context.

Roland Barthes used the terms denotative and connotative to describe this concept. Denotative refers to what an image depicts in a literal way, without any inference. Connotative refers to the culturally and emotionally significant meaning of an image-the aspects that resonate with the viewer as described by Marita Sturken and Lisa Cartwright in Practices of Looking. Conservation photography aims to use images as springboards for discussion, and visual literacy skills set the stage for critical thinking. Educator Robert Phillips notes that learning “skills and attitudes for viewing pictures can assist in understanding the form, content and context of visual images, and help them to critically assess the inherent qualities, veracity, and agency of images.”

Adopting a visual literacy approach to viewing conservation images, we can analyze photographs such as the image of the man with turtle. We start by identifying the denotative and connotative aspects of the image, and then dissect its syntax and semantics. To begin, we describe the image denotatively. It depicts a man standing on a beach holding a turtle. Behind him, we see several fish lying on the sand on one side, and a black net on the other. Next, we explore the connotative meaning of the image. What personal experience do we have that influences how we interpret this photograph? Someone with a fishing background, for example, might sympathize with the human subject of this image and admire how proud the man is of his catch. For some, the tropical beach location might be interpreted as exotic. Our personal context shapes the connotations we draw from the image.

“A photograph can’t coerce. It won’t do the moral work for us, but it can start us on the way.” – Susan Sontag, 1973

Syntax, or the arrangement of visual elements, allows us to examine the intent of the photographer and the conscious choices they made while creating this image. Taken from slightly above the subject, the perspective of the image makes the man look diminutive in stature, as opposed to a lower angle, which would have made him seem large and powerful.

The areas of interest (i.e. the fish, the man, the turtle, and the net) are concentrated in the foreground of the image, while the background consists of a nondescript beach landscape. The colour palette is fairly consistent and muted, except for bold blocks of colour in the man’s clothing. His red shorts and blue shirt are a stark contrast to the taupe background. This draws the viewer’s eye first to him, and then, more significantly, to the sea turtle he holds in his hands. Framing is used on several levels – the fish and the net on the beach frame the man, while the man’s figure and bright clothing frame the turtle.

Finally, we consider semantics to examine the societal context of the image. The man’s smile and stance suggest a level of pride associated with the turtle, leaving the viewer to surmise his plans – is the turtle intended for a meal, or for release back into the ocean? We can make inferences about the man based on his clothing – he wears a t-shirt that is splattered with stains, and a pair of shorts with one pocket turned inside out. His unkempt clothing suggests that he has a job involving physical labour, as does his position next to the black net that appears to be used for fishing. The man’s attire fits in with his outdoor surroundings.

Captions have an important function in conservation photography, as they fill in gaps and help to answer questions associated with semantics. In this particular picture, the man is a Trinidadian fisherman, photographed with a juvenile green sea turtle caught in his fishing net right before he released the turtle back into the ocean. The photograph was commissioned by a sea turtle conservation NGO, intended to be seen by members of the general public in order to draw attention to the plight of sea turtles as by-catch in the fishing industry.

Quantifying the effectiveness of conservation photography is largely uncharted territory. In the following case study, we provide examples of outcomes resulting from the combined efforts of a biologist and a conservation photographer. Sea turtle populations are in decline worldwide, due to a number of causes including fishing practices, pollution, and ocean health. In an ongoing project to save these ancient reptiles, focused on specific populations, visual assets are being created for use in research, advocacy, and outreach, communicating the threats faced by sea turtles to the layperson and encouraging people to participate in conservation efforts locally. Partners onboard this international initiative include the California Academy of Sciences, and the International Union for Conservation of Nature Marine Turtle Specialist Group, among numerous conservation organizations. Grants and donations via The Ocean Foundation have brought the following outcomes to fruition:

  • Print publications: photography used in magazines that reached a total circulation audience of over 5 million people to date, in both academic and mainstream audiences
  • Presentations: photography used in worldwide presentations to audiences from 25 to 12,000 people
  • Portfolio review: Mexican government officials are currently reviewing research findings on by-catch accompanied by documentary photographs
  • Funding: increased donations, thanks in part to the impact and reach of conservation photographs.

The conservation photographer’s task is to disseminate images strategically, in order to promote their conservation agenda. Visually literate audiences have the skills to interpret these messages and by extension, the potential to make a difference through their actions. Therefore, a convergence is required between visual literacy competencies and conservation photography works.

This article is from issue

4.2

2010 Jun

Going Organic for Biodiversity

There is overwhelming evidence that the use of chemical fertilizers and pesticides contributes to soil contamination, which affects both biodiversity and human health. With increasing knowledge about the harmful effects of chemical use, there is a realization that chemical-free farming practices have to be adopted. An initiative in this direction has been taken by the Kerala State Biodiversity Board (KSBB), which instituted an Organic Farming Policy that came into force in 2010. This policy, which will be implemented by the Kerala State Government, recommends phasing out the use of chemicals and pesticides on food crops by 2015, and on cash crops by 2020.


In a move to demonstrate the practicality of this proposition, the KSBB initiated an experiment in Padetti village, Aremayur Panchayat, Palakkad District in 2008 with the cooperation of 69 farmers. Under this pilot project, farms spread over 400 acres were considered for organic farming. A 100-acre area within this was targeted for organic cultivation after taking into consideration the topography of the land and ensuring that this area was free from pesticide run-off from neighbouring farms. Prior to the start of the project studies were commissioned from various institutions to assess bio-diversity (birds: Thanal, benthic fauna: Cochin University, botany: Guruvayurappan College, insects: Entomology Department, Devagiri College, pesticide content: Salim Ali Centre for Ornithology and Natural History, and socioeconomics: River Research Centre) at the project site. At the time of the project was initiated, the price of paddy grown by conventional methods was Rs 11/kg, and the cost of farming was Rs 8.23/kg of rice.
Since the start of the project, only organic fertilizers and no chemical fertilizers have been used on the 100 acre area. Organic farming experts from Kudumbam, Trichy, trained farmers through all stages of the farming process. Though the yield of paddy was low in the first two harvests and did not return profits, the third harvest equalled the pre-organic production, and yield in the fourth harvest was higher than that with chemical farming. Paddy is now worth Rs 14/kg and the cost of production has come down to Rs 6.45/ kg, resulting in increased profits for the farmers. It was also observed that biodiversity increased in terms of abundance and diversity. For instance, the Baya weaverbird, which has not been sighted in the farmlands for 40 years, is now a regular along with black drongos, bee-eaters, and kingfishers.


Besides encouraging a chemical-free approach, the KSBB has initiated a Homestead Biodiversity Enhancement Program. The program encourages cultivation of vegetable gardens and fruit trees, water harvesting, use of biogas to reduce fuelwood consumption, and solar power for electricity. A dairy is also proposed, and this program seeks to make the area a sustainable, self-sufficient and eco-friendly unit. The ultimate goal of the joint effort of the KSBB and Kerala State Government– the Organic Kerala Mission–is to expand organic farming to 40,000 acres of land in the state of Kerala.
 


This article is from issue

4.2

2010 Jun

Common Property Theory, Elinor Ostrom & the IFRI Network

Introduction
Founded in 1992 at Indiana University and with its current home at the University of Michigan, the International Forestry Resources and Institutions (IFRI) research network addresses one of the pervasive gaps in research on the commons—the lack of systematic data that can be analyzed, using coherent conceptual frameworks and advanced quantitative and qualitative analytical approaches. Focusing on forest commons, and finding inspiration in the research of Elinor Ostrom and other scholars of the commons, IFRI researchers and scientists have implemented common data collection protocols and approaches across a variety of cultural, social, biophysical, and national contexts, in order to improve the understanding, of how forests are collectively used and governed, and with what effects.

At the time the IFRI network came into being nearly twenty years ago, there were few studies of the commons that used statistical, quantitative, or modeling methods and approaches, to examine social and ecological outcomes, across a large number of cases or across different contexts. The preponderance of case-based approaches meant that the scholarship on the commons had a plethora of potential explanations, derived from specific cases, but limited means to test, whether explanations that appeared reasonable and persuasive in a given case, were also relevant to other cases and contexts. For example, high levels of participation and collective action in a given case study could well explain the effectiveness of local resource management institutions and positive resource outcomes. But, did high participation lead to improved management institutions and positive resource outcomes in other contexts as well? In that early period of research on the commons, different case studies collectively highlighted scores of potential theoretical explanations of commons outcomes. Scholars of common property and those interested in resource governance did not have the data that could be used to test explanations. The IFRI initiative has helped address this major gap in research on the commons.

The IFRI Network
The IFRI network has 11 collaborative research centers (CRCs) in 10 countries and has collected data from 17 countries in all. The 10 CRCs are located in East Africa—in Kenya (Kenya Forestry Research Institute), Tanzania (Department of Forest Mensuration at Sokoine University of Agriculture), and Uganda (Uganda Forestry Resources and Institutions Center at Makerere University); in Latin America—in Bolivia (CERES), Guatemala (Universidad del Valle de Guatemala), and Mexico (Instituto de Investigaciones Sociales Universidad Nacional Autonoma de Mexico); in Asia—in India (SHODH, The Institute for Research and Development), Nepal (Forest- Action Nepal), and Thailand (School of Environment, Resources and Development at the Asian Institute of Technology); and in the United States—at Indiana University and at the University of Michigan. The  University of Michigan coordinates the research relationships among these centers.

The IFRI Approach
Researchers associated with IFRI program developed their research methods in 1992–1993, based on the Institutional Analysis and Development (IAD) framework advanced by Elinor Ostrom and her colleagues at Indiana University. With the IAD framework providing an over-arching set of principles to guide research, IFRI scholars have created a standardized methodology for fieldwork, based on 700 questions organized in 11 data collection instruments (instruments and an instruction manual for conducting fieldwork are available at www.umich.edu/~ifri). IFRI researchers are currently developing a more streamlined set of questions and variables, that they have found useful to address resource governance and institution-related questions.

This article is from issue

4.3

2010 Sep

Carry-on meat

Illegal bushmeat in airplane baggage feeds luxury market in Paris.

The emergence of a luxury market for African bushmeat in Europe was brought to light recently by Anne-Lise Chaber and her colleagues of the Zoological Society of London. With the help of customs inspectors at the Roissy-Charles de Gaulle airport in Paris, they conducted the first systematic survey of illegal imports of meat and fish carried by passengers arriving from sub-Saharan Africa. Large quantities of fish and meat were found in iceboxes and other carry-on luggage of passengers from West and Central Africa. Focusing on bushmeat, they found eleven species sourced from three countries, almost all of which are listed under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). The main drivers identified to facilitate the import of illegal meat in Europe are the lack of initiative shown by customs officers to seize such products as well as to penalize passengers carrying illegal meat.

Most passengers claim to either be unaware of regulations on importing meat or produce a veterinary certificate for the animal products which is of no legal value in Europe. As the demand for bushmeat grows among customers in Paris, the rewards derived by these ignorant passengers from Africa for transporting the meat also increase.

Chaber and colleagues recommend that passengers be made aware of regulations related to importing meat illegally and the associated risk of prosecution, as carried out in the United Kingdom by a targeted publicity campaign. Bushmeat trade regulations can be better implemented by training customs officers to distinguish key taxa and by providing them with incentives to safely process and store seizures as evidence. They advocate a large scale study, covering all possible supply routes, to further understand this organized trade and develop strategies to reduce this flow of illegal meat, especially bushmeat.

Further reading
Chaber A, Allebone-Webb S, Lignereux Y, Cunningham AA & Rowcliffe JM. 2010. The scale of illegal meat importation from Africa to Europe via Paris. Conservation Letters 3: 317-321.


Sneha Vijaykumar is a PhD student at the Centre for Ecological Sciences, Indian Institute of Science, India. sneha@ces.iisc.ernet.in
 

This article is from issue

4.2

2010 Jun

Mired by progress

Bulgarian mires face an uncertain future in the face of economic development.

Biodiversity and ecosystems continue to shrink irreversibly giving way to economic progress, even as policies to save them are being discussed all over the world. One such case is that of the mires (wetlands of peat and calcareous tufa) in Bulgaria. A comprehensive study carried out by Michal Hajek and his team found that mires in Bulgaria are of unique ecological importance. The mires are highly diverse, representing the entire pH/calcium gradient, and also differ in historical age.

Therefore they act as refugia for various endemic and rare species of flora and fauna and are priceless natural archives. But unlike other mires in arctic and boreal zones, which still remain quite unharmed, these (in south Europe) have been either drained for agriculture and urbanisation, or been submerged. The study shows that 43% of mire plants (some of which are extremely rare)are threatened, and that some of the rarest mollusc communities are found in only a few threatened sites.

The European Union has instituted a policy called Natura 2000 that makes it compulsory for all member nations to protect biodiversity-rich areas. Bulgaria when it joined the Union in 2007 needed to create its own Natura 2000 network. This, however, seems to have come a little too late. In the race for current economic progress, Bulgaria has already lost a major portion of its rare mires, at an accelerated rate after joining the E.U., but also earlier in the 1950s during the communist period. There is a huge lag between the making of policies and their realisation. Public awareness needs to be raised quickly to help slow down the disappearance of such irreplaceable natural treasures.

Further reading
Hajek M, Hajkova P, Apostolova I, Horsak M, Rozbrojova Z, Sopotlieva D & Velev 2010. The insecure future of Bulgarian refugial mires: economic progress versus Natura 2000. Oryx, 44, 539–546.

This article is from issue

4.2

2010 Jun

Forced to adulthood by Global Warming

Climate-change is a reality, and conservation efforts must adapt to deal with it.

Life on earth hangs on a highly delicate balance of many factors, one of the most critical being temperature. Any change in the surrounding temperature can have a drastic impact on the life history strategies of most organisms. In the past few decades there have been records of global warming, and the various consequences that follow, usually as precocious natural phenomenon. Though anthropogenic activities have often been thought of as a major contributor to global warming, there have been very few studies that demonstrate it as ‘the’ causal factor.

Of the few, there is one study by Kearney et al. (Biology Letters, March 2010), which reported anthropogenic warming as the cause for early emergence of the annual common brown butterfly Heteronympha merope in Melbourne, Australia. The team gathered information on the emergence dates of the butterfly from 1941 to 2005, from museum records and privately collected data, and calculated the average emergence date for every ten years. They also observed the effect of temperature on the life cycle of the butterflies, from egg to adult stage in the laboratory. Historical weather record of the region from 1947 to 2007 was used to model the physiological response of the butterflies to temperature. Further, climate change models of the region were also made.

It was found that butterfly instars respond to increasing temperature, and 5th instars never survived at or beyond 25°C. The predicted earlier emergence by 1.5 day per decade due to increasing temperature in the region almost coincided with the observed 1.4 day earlier emergence each decade for the past 65 years. They also found that “the observed regional warming trend is consistent with the modelled climate response in this region to increasing greenhouse gases and other anthropogenic climate forcing”.

This study showed anthropogenic warming as a clear cause for phenological shift in a butterfly.

Further reading
Kearney MR, Briscoe NJ, Karoly DJ, Porter WB, Norgate M and Sunnucks P. 2010. Early emergence in a butterfly causally linked to anthropogenic warming. Biology Letters 6:674-677.


* Sandhya Sekar is a PhD student at the Centre for Ecological Sciences, Indian Institute of Science, India. sandysek@gmail.com
 

This article is from issue

4.2

2010 Jun

India’s increasing forest cover: cause for celebration?

India might look green from the sky, but that is not necessarily good for biodiversity on the ground.

In 2009, the Forest Survey of India (FSI) announced that India’s forest cover had increased by over 5% in the last decade. A recent paper in Conservation Letters suggests that this might not be great news after all. Jean-Philippe Puryavaud, Priya Davidar, and William Laurance – biologists who have worked in the tropics for many years, show that the increase in India’s forest cover has come about entirely through the expansion of plantations of exotic vegetation. Since 1992, state- sponsored afforestation programs of fast-growing exotic species such as Eucalyptus and Acacia have expanded rapidly in the country, mainly to meet ever-increasing demands for timber and fuel wood. At the same time, however, native forest cover has reduced at a high rate of roughly 2.4% per year. This is extremely worrying because these newly created ‘forests’ of exotic trees are of little use in conserving native biodiversity.

The authors strongly believe that the main reason for the decline in native forests is fuel-wood collection by India’s huge rural population; urgent attention, therefore, needs to be paid to find and make other forms of energy such as natural gas, biogas and electricity accessible to them. The authors also urge the FSI and policy-makers to make better use of the technology available to monitor the fate of native and plantation forests separately. Failure to do so, they feel, will lead to a very misleading picture of the fate of India’s forests.

Further reading
Puyravaud J, Davidar P & Laurance WF. 2010. Cryptic destruction of India’s native forests. Conservation Letters 3: 390–394.



 

This article is from issue

4.2

2010 Jun

Making chairs for conservation

Some say putting a wood to good use is the best way to control it. Can this novel strategy result in a win-win for multiple interest groups?

The management of invasives has focused on preventing and containing invasive species and thereby mitigating their impacts on local biodiversity, ecosystem functioning, and human health. However, apart from a few examples, such management has been only partly successful while being very costly. The management of invasive species is especially challenging in tropical human-dominated landscapes. Invasive species can exacerbate the biodiversity crisis by reducing population densities of native species, many of which are important for livelihoods of the rural poor. Invasive species could potentially lead to further marginalisation of these impoverished people. But the reverse is also true. In tropical human-dominated landscapes, invasive species are often viewed as resources that can provide potential economic benefits to the poor. Control of invasive species in these habitats may lead to loss of rural livelihoods. In low-income countries, because people might exploit invasive species for food, fiber, and fuel, there could be an ambivalent attitude to the control of invasive species. In these countries, invasive species control may have to be weighed against the resulting loss. This challenges conventional wisdom about managing invasive species, at least for tropical landscapes. This also creates an interesting dilemma: to control or not to control. Mainstream research on management of invasive species has scarcely addressed this question.

Management decisions do not conform to a ‘one size fits all’, and a suite of different strategies-including exploitation of the invasive at some stage of its invasion -rather than a single strategy, could be regarded as an approach to minimizing the net costs. Optimising management strategies for invasive species requires evaluating the full range of costs and benefits of alternative control options. The following questions can be considered: a) what are the threshold levels of invasion that war-rant management (when benefits due to investments in control exceed the damage costs) and, as a corollary, b) at what threshold (or when), should management effort be considered to have failed (i.e., when are benefits due to control actually less than the damage costs)?


We expect the ecological impact of an invasive species to be low at an early stage soon after introduction but before it has spread widely (the ‘lag phase’). The impacts of the invasive species are likely to increase during the subsequent exponential growth (‘logistic’) and stabilisation (‘equilibrium’) phases (see figure). In the early stages of invasion, eradication is generally preferred, both because the marginal costs are low and because the potential benefits are large. Ironically, often no management effort is initiated at this stage, either because the ecological costs are small or because they are not yet perceived. As both the abundance and the impacts of the invasion increase, management investments start being made. Most management, though expensive, tends to be deployed during this phase. In the last, stable phase, management interventions are not only very expensive but tend also to be the least successful.

Management of invasive species in the third phase may be regarded as futile. But should management options to control invasive species at this stage be abandoned? Could alternate management strategies be developed?
From a management perspective, the increasing ecological cost of invasive species should be weighed against any benefits that may accrue. In the range of options available for management, one can allow for the entire spectrum from complete eradication to adaptive management (wherein the species can actually be gainfully used; http: //tncweeds.ucdavis.htm). Today, a number of species are notorious for being invasive across the world, and notable among them are Eichhornia, Prosopis, and Opuntia. Control tor management of these invasive species, especially in tropical human-dominated landscapes, with traditionally poor economies, has been nearly absent or woefully unsuccessful. Over time, though, at least some of these invasive species have blended into the local ecosystems and become integrated into the livelihoods of people for two reasons.

First, invasive species tend to be abundant and freely available for harvest. Second, invasive species can offer a suitable, if not a perfect, substitute for existing resources that are scarce or expensive. Abundance and substitutability result in the low opportunity cost of collection and utilisation.

If you cannot break it, at least bend it
The invasion and the current spread of lantana across the world represents a typical case of a successful invasive species. Management options for lantana are few, expensive, and possibly futile. One potential management strategy, therefore, would be the utilisation of lantana. Could this lead to adaptive management of lantana in a manner that would reduce the net cost of the species by partially offsetting both control and damage costs? We present a case study of a recent initiative that encouraged the use of lantana among marginalised communities in southern India. A number of forest dwelling communities in India depend almost exclusively on forest resources for their livelihood. On such a community, the Soligas were hereditarily dependent on bamboo and cane resources. In recent years indiscriminate extraction has severely depleted the natural stocks of cane and bamboo and has directly threatened their principal source of livelihood. An appropriate substitute for the declining wild bamboo and rattan resources could make a substantial difference to the Soligas.

We explored the possibility of using the locally abundant invasive species, lantana, as a substitute for bamboo and canes to maintain or even enhance the livelihoods of these communities, while alleviating the stress on beleaguered populations of bamboo and canes. Kannan and colleagues promoted the use of lantana as a substitute for bamboo and canes and designed appropriate lantana products for rural and urban markets. Over 350 men and women were trained in the use of lantana at several field sites in South India. More than 50 different products, from baskets to furniture, were developed. The average number of person-days of employment in lantana craft increased from about 30 in 2004 to more than 80 in 2006. Over the same period, the mean annual per capita income from lantana increased from US$ 17.90 to US$ 63.93, a significant jump.

Viewed in the context of managing invasive species, this initiative offers an unconventional approach to minimising the net cost: the use of lantana could allow for the regeneration and recruitment of native species and mitigate other ecosystem damages such as pollinator loss; the harvest of lantana could provide a window of opportunity for the regeneration of at least some native plants; and the extraction of the weed might help in reducing the incidence of forest fires, which otherwise are fanned by lantana and also offer greater accessibility for both animals as well as people. Of course, these mitigating effects would depend on the scale and the ways in which lantana is eventually used.

From exclusion to inclusion
Any action (including promoting the use of the invasive) that can reduce the ecological cost of the invasive is a potentially useful strategy. A shift in our view of managing invasive species, from one of exclusion to that of inclusion may be pragmatic, particularly in tropical human-dominate landscapes where low income and the abundance of the invasive species constrain effective control, while the lack of rural options encourages utilisation. For example, Geesing and colleagues defend the use of Prosopis thus, “Notwithstanding the unquestionable ecological changes produced by Prosopis invasion, where the species has been introduced it is necessary to make the best of a situation that is hardly reversible.”


 R Uma Shaanker is at the Department of Crop Physiology, and School of Ecology and Conservation, University of Agricultural Sciences, Bangalore,
India.
Gladwin Joseph, NA Aravind, and R Kannan are at Ashoka Trust for Research in Ecology and the Environment, Bangalore, India.
 KN Ganeshaiah is at the Department of Forestry and EnvironmentalSciences, and School of Ecology and Conservation, University of Agricultural Sciences, Bangalore, India.

This article is from issue

4.1

2010 Mar

Removing Rats with Care

Invasive species cause much damage to native biota, and eradicating these invasives is often a difficult time-consuming and expensive process that involves careful planning and monitoring of sympatric species. Gregg Howald of Island Conservation, Canada, and colleagues at the University of California, Santa Cruz, eradicated black rats (Rattus rattus) on Anacapa island, off the coast of California, while simultaneously monitoring the impact of these efforts on native fauna between 2001 and 2008.

Pellets containing the poison Brodifacoum were air-dropped during the dry season, in a staggered fashion, between 2001-2002, to cover Anacapa Island. The island has a native population of deer mice, and care was taken not to eradicate this species. Before air-dropping pellets, specific species, like deer mice and raptors, that were thought to be potentially at risk from the poison were captured, and a certain part of the local population was held in captivity. Several environmental variables (soil, ocean samples) and animal populations, including the target species, were monitored closely before and after the application of the poison. Rats were completely eradicated by the procedure and monitoring in the year found no more rats.

However, while most other native species were not adversely affected, the poison decimated populations of deer mice, raptors and small birds. Rufus-crowned sparrows were most affected, and were not sighted by the authors even 6-7 years after application. The captive-held populations of deer mice and raptors were released one year after application, and numbers are now seen to be similar to pre-application levels. Following successful eradication of black rats from the island, positive effects were seen on murrulets and other seabirds, including reduced predation on eggs and sightings of a one additional species of seabird. The authors stress the importance of holding captive populations of natives species during large-scale eradication efforts.

Further reading
Howald G, Donlan CJ , Faulkner KR, Gellerman SOH, Croll DA and Tershy BR. 2009. Eradication of black rats Rattus rattus from Anacapa Island. Oryx 44(1): 30–40.

R Nandini is a Research Associate at the National Institute of Advanced Studies, Indian Institute of Science campus, Bangalore 560012. Mail at nandinirajamani@gmail.com

This article is from issue

4.1

2010 Mar

The Thinking & Feeling Animal

‘The Expression of the Emotions in Man and Animals’, first published in 1872, followed in the wake of ‘The Origin of Species’ and ‘The Descent of Man’. Although an important landmark in early behavioural studies, it was probably overshadowed by Darwin’s earlier works of great importance and is thus not as well known as his other writings.

This book is not, as is sometimes made out to be, an explicitly comparative study of emotions in man and animals to establish the continuity of emotions. It is actually an investigation into the nature and origin of the expression of emotions. The questions Darwin intended to answer were more on the lines of how far particular movements of the features and gestures are really expressive of certain states of the mind and why certain muscles, and not others, contract under the influence of certain emotions. To this end he took an evolutionary approach, for he believed that the creationist assumption of immutability of species, adopted by most authors of the time, hindered a thorough investigation into the causes of emotions.

Darwin presents six lines of evidence to try and answer the questions he posed; of these, he gives most importance to the close observation of expression of several ‘passions’ in the ‘commoner’ animals. The other evidence stem from, for reasons that he explains in the introduction to the book, the observation of babies, impressions of observers about the emotion best expressed by photographs of the face of an old man when certain muscles were galvanized, study of emotions in paintings and sculpture, notes from observations of the insane, and notes on the expression of emotions in various races of human beings. The book thus brings together vast amounts of evidence from diverse fields like physiology, psychology, psychiatry, the arts and animal behaviour. As is characteristic of Darwin, there are no hand-waving arguments or enthusiastic, but unwarranted, interpretations; instead he conducts a patient appraisal of the available evidence and puts forward arguments supported by extremely insightful observations replete with detailed descriptions of behaviour.

What makes the book special, though, is how effortlessly and without hesitation Darwin bestows upon animals all that Descartes had denied them: feelings, emotions, volition. There is thus an important extension here of the doctrine of evolution of species, one that implies morphological, behavioural and mental continuity not just over evolutionary time as species evolve, but within the extant species as well. Although not explicitly sketched out in the text, the psychological continuity emerges as we are led to closely examine the emotions and behaviour of animals and man. ‘The Expression’ is thus a remarkable treatise, far ahead of its time, and an immensely significant forerunner to the development of fields like comparative psychology, which were eventually to give rise to disciplines like animal cognition and cognitive ethology that today delve into animal minds.

Further reading
Charles Darwin. 1872. The Expression of the Emotions in Man & Animals. London: John Murray.

Sartaj S Ghuman is a PhD student at the National Institute of Advanced Studies, Bangalore, India. Mail at batalaland@gmail.com

Invading the Andamans

From weeds to elephants, animals brought in by human cause economic and environmental damage in the Andaman Islands.

Invasive species are especially problematic on islands. Islands tend to be depauperate of species, and this enables a lot of introduced species to take hold. Invasives arrive by various means. They are either deliberately introduced (as household pets or ornamental plants), or arrive as commensals (e.g., rats, mice), foodgrain contaminants (as weeds), or in ship water ballast. Ship water ballast is estimated to carry up to 10,000 species daily to areas outside their native range, making this one of the main pathways of introduction. Islands also have a large number of range-restricted endemic species, that might face extinction when competition with invasives occurs. Even invasives that do not attract attention in mainland areas can become troublesome on islands. This is specially the case when there are no predators, and endemics have evolved in the absence of predators.

While some invasives spread by extending their ranges in the areas where they have been introduced, the most important factor is the availability of transport vectors. These could be domestic animals passing through with parasites on them. These could also be trucks and cars; the presence of road networks is a key factor in the spread of invasives. In the Indian subcontinent, knowledge of invasives is basically confined to ‘page 3’ plants. The well-known ones here are Chromolaema odorata (eupatorium), Lantana camara (lantana), Eicchornia crassipes (water hyacinth) and Mikania micrantha (mile-a-minute weed). Every protected area management plan gives a laundry list of these plants, with a recommendation that they ‘be controlled’. How this is to be done is never specified. Animal invasives are largely ignored, because of the perception that these are common animals and cannot be called invasives. These include feral dogs and cats, which cause great damage to our natural ecosystems.

While hardly noticed on the Indian mainland, bird and animal invasives have begun to play a significant role in both the ecology and the economics of the Andaman Islands. A total of 12 bird species have been introduced into the Andamans, mainly at the end of the 19th century. Of these, 5 are still found there, 6 have disappeared, and the status of 1 is unknown. Of the five still found, two are invasive. The most ubiquitous of the bird invasives found in South Andaman is the common mynah (Acridotheres tristis). This species of the Indian mainland has spread all over Southeast Asia, parts of Australia and New Zealand, and the island groups of the South Pacific. They are known to prey on the eggs and nestlings of other bird species and may compete in the Andamans with indigenous hole nesters such as the glossy starling and the black woodpecker. They are listed as being among the 100 most invasive species in the world.

A much more recent invader is house crow. Seven individuals were seen flying off a boat in Port Blair in 2003. Timely action was not taken to eradicate them, and now they number several hundred.

In other island ecosystems where crows have become established they are agricultural pests as well as disease vectors. House crows were also introduced into the Nicobars in the past, though the exact date is not known. Of the 13 mammal species that were introduced here-including domestic animals-two, (leopard and hog deer) have died out, but most of the rest are problematic. The most ubiquitous of these is the chital ( Axis axis). In the Andamans the regeneration of forests is severely affected wherever chital are common, since they browse on seedlings, even in evergreen forest. The only two species they appear to avoid are Pongamia pinnata, a coastal evergreen species, and Lagerstromia hypoleuca, a deciduous species. As a result, large areas that were originally semi-evergreen forest have become deciduous in character due to the pre-dominance of Lagerstromia hypoleuca.

Elephants were used for timber operations on Interview Island, and in North Andaman. When the timber operator in that area went bankrupt in 1962, the elephants were released into the forest and became feral. On Interview Island these elephants have damaged the vegetation by debarking and knocking down trees. Moreover, the deer here will not allow any regeneration. The result is an annual rate of forest loss on Interview Island significant enough to be detected on satellite imagery. Cats, dogs, goats, and cattle have all become feral in different parts of the islands. Dogs form packs and have been known to attack humans. They also attack sea turtles that come ashore to lay eggs, in addition to digging up and eating the eggs. While no study has been done on cats, they probably cause serious mortality among the bird species found in the islands. Goats contribute to the degradation of Barren Island. This island is volcanic, and is not inhabited. British sailors released the goats there in the mid-1800s as insurance against any future shipwreck in the area. They were subsequently introduced on Narcondam Island in the 1970s, where they began spreading; luckily the Andaman and Nicobar Administration acted on a report by Ravi Sankaran detailing the damage they did, and has taken steps to eradicate them. The control of chital has been recommended for a while, but the permissions from MOEF are not forthcoming yet. The control of dogs has also not been undertaken yet; fear of animal rights activists seems to play a large role here.

I will not go into the various plant species that have become invasive here, save to state that even on Great Nicobar island, a short study found 12 invasive weed species. Most of these were contaminants of seed material that had been brought there. Escaped ornamental plants have also caused major problems around Port Blair. What is required urgently is a national policy to deal with invasives, especially in these island areas that are particularly vulnerable. This policy would have to consider invasion pathways, vectors of spread, and legal and cost-effective mechanisms for control and eradication.
 

This article is from issue

4.1

2010 Mar

Tackling Invasive Species: the story of a shrub in South Africa


Sometimes, native plants run rampant under changing circumstances, becoming ecological disasters. But how does one control Invasive plant species are a considerable threat to productive land use and economic returns in many areas of the world. Thus they are frequently viewed within a degradation paradigm, having been facilitated by inappropriate land use practices resulting in reduced useful productivity. For example, the economic cost of alien invasive species has been estimated at being close to 5% of world GDP. However, not all invasives are alien. For example, at least 10% of South Africa is encroached by indigenous species that form almost monospecific stands over large areas, and this encroachment is increasing through perceived injudicious land-use practices. Therefore the economic costs of invasive species, in general, are likely to be far higher. Given the overwhelmingly negative narratives pertaining to the economic impacts of invasive species, the social and sometimes ecological dimensions of these processes receive considerably less attention. Consequently, eradication programs are designed on economic imperatives with insufficient consideration of the social and ecological implications. Frequently, the alien species are cleared by manual, biological, or chemical means, but without altering the original land-use practices that encouraged the invasion in the first place. Thus, in the long run, the species re-invades. Management is addressing the symptoms rather than the cause.

We recently examined the case of invasion by an indigenous perennial shrub, Euryops floribundus NEBR, in the inland mountains of the Eastern Cape province, South Africa. This mountainous area is covered largely by semi-arid, sub-montane grasslands. A few trees and shrubs can be found in valley bottoms, but most were removed by local communities long ago for fuelwood and fencing poles. The species has a wide distribution, but is usually relatively sparse and confined to rocky outcrops. However, in the Macubeni area, it has invaded large tracts of land and is believed to be promoted by heavy grazing pressure by domestic livestock. In protected outcrops, it grows up to 2.5 mt tall, but in open environments, it is usually less than 0.75 meters tall.


The Marubeni area is one of the poorest in South Africa. It consists of 14 villages with approximately 1,700 households. Livestock stocking rates in the Macubeni area are over three times what is recommended by government extension offcers. The significant signs of gully and sheet erosion obvious throughout the area are blamed on the high stocking rates (although the relative contributions of the absence of contours in arable fields on hilly slopes, and weak control of runo$ from roads has not been investigated). Consequently, in 2004, the central government sought to involve local households in a land rehabilitation and poverty relief programme. After basic consultations, they agreed to hire local labour to manually remove approximately 1,500 ha of Euryops as a means to create more grazing for the livestock and so reduce the grazing impact per unit area. Almost US$1 million was allocated to the programme, comprising 35,350 person-days of labour. However, there was no scientific investigation of the causes of the Euryops invasion, nor of how the broader population viewed or used it.

Through a household survey, we found that most households interviewed used Euryops as a source of biomass fuel for cooking, with most households collecting it daily or every second day. A few households also used it as packing to build livestock enclosures, and almost none used it for medicinal purposes. Many stressed that without Euryops they would have to purchase paraffin for cooking fuel, which was expensive and not always available. Hence, their energy security was vested in being able to collect Euryops within an accessible distance.

The results of an ecological survey comparing sites, with and without Euryops reflected certain differences in habitat variables. Overall, there was no statistical difference in the proportion of bare ground or total plant cover between invaded and paired non-invaded areas. However, there was significantly less grass cover, but a higher forb cover, in invaded sites. Interestingly, however, was the fact that there was a significantly higher plant species richness in the invaded sites than the paired non-invaded ones, largely due to the increased richness of forb species.

The invaded areas had six species exclusive to it not found outside the Euryops patches, whereas the open grasslands had only one species that was not found in invaded areas. The frequency of livestock dung in open grasslands (14.6 + 3.4 %) was almost double that recorded in the invaded areas (8.5 +2.5 %). Cluster analysis of the species composition indicated that none of the designated groupings were exclusive to invaded or non-invaded areas and that 75 % of the paired sites were faithfully placed within a matching cluster. This suggests that overall plant species composition is similar between the two, and the composition of groupings in the cluster analysis reflected underlying abiotic site characteristics rather than differential land-use pressure.

The situation regarding the occurrence, use, and management of Euryops at the site are clearly complex, with contrasting needs and understandings. Local households clearly make extensive use of it as a resource and are highly dependent upon it as their primary source of fuel. Its removal, therefore, represents a potential cause of hardship and reduction in energy security. Another benefit of its presence seems to be the higher plant species richness associated with patches of Euryops relative to the surrounding grasslands.

We suggest this is because the shrub offers a physical refuge to certain species. This is supported by the lower-grazing pressure in the invaded areas (as indexed by the lower frequency of livestock dung). Thus, on the one hand, there is widespread soil erosion and invasion by Euryops, which prompted external authorities to take action. As livestock grazing regimes were implicated (although never examined) in both of these negative manifestations the reasoning of authorities was either to reduce the livestock numbers or increase the area available for grazing. Local owners of livestock argued for the latter, proposing that funds be provided to manually remove Euryops. If successful this would benefit households who own livestock and also provide some temporary employment to poorer households. However, livestock-owning households are in the minority and are generally more wealthy than average. Moreover, livestock ownership is the domain of men, and in a patriarchal society, they have greater power in community meetings and household affairs. On the other hand, our results have shown that the removal of Euryops will deprive most households of their primary source of biomass fuel. Interestingly, the collection of biomass fuel is the purview of women, who typically lack a voice in community meetings and household affairs. It will also open up the invaded areas to increased grazing again, and potential loss of the refuge sites for several plant species. However, if excessive grazing was the cause of the invasion in the first place, what will prevent the shrub from reinvading in time? The bottom line is that until a thorough ecological study is undertaken to understand the causes and consequences of the invasion, any interventions, and relief efforts are likely to be temporary, whilst removing the respite the invasion offers to heavy grazing and its presumed attendant ill-effects of soil erosion and reduction in plant species richness.


Further reading: Shackleton CM & J Gambiza. 2008. Social and ecological trade-offs in combating land degradation:The case of invasion of a woody shrub (Euryops floribundus) at Macubeni, South Africa. Land Degradation & Development 19: 464-46
 
Charlie Shackleton is Professor of Environmental Science, Rhodes University, Grahamstown, South Africa.

James Gambiza is a Senior Lecturer in Environmental Science, Rhodes University, Grahamstown, South Africa.
Illustrations: Kalyani Ganapathy
 
 
 

This article is from issue

4.1

2010 Mar

How Lantana invaded India

There are a growing number of invasive species in ecosystems around the world. One such invasive species is Lantana camara. Key biological attributes of lantana that make this species among the world’s 100 worst invasive weeds include fitness homeostasis, phenotypic plasticity, widespread dispersal by birds that feed on its fruit, a broad geographic range, vegetative reproduction, fire tolerance, ability to compete effectively with the native flora, and allelopathy.

It is not clear how lantana arrived in India, although there are anecdotal references to the introduction of lantana as an ornamental in the early 19th century. Lantana may have been introduced into India on multiple occasions—as an ornamental plant in Coorg and as a hedge plant in Calcutta. We can trace its spread in Nainital district of India: it was introduced around 1905; till 1911 it was confined to hedges and was sparsely distributed; by 1929 it had become widespread, forming dense thickets in farms, pastures, fallows, and forest areas. Lantana has invaded most Indian pasture lands (13.2 million ha) besides forest and fallow areas, and the cost of its control is estimated to be US$ 70 per hectare. Indian populations of lantana have been around for a long time (about 2 centuries). This would suggest that lantana has had time to evolve and become locally adapted. However, it is difficult to attribute the success of lantana to any one factor alone, and one could invoke different hypotheses to explain its success at different stages of the invasion process.

Consequences of lantana invasion, particularly on the native flora, are little understood and need to be studied. Our studies provide a qualitative and quantitative overview of the effects of lantana on ecosystem structure and function in tropical dry forests of northern India. Many species of tropical dry forests have small local populations, but several of them exhibit declining or even severely depleted populations in lantana-invaded locations. Such invasions create demographic instability among native tree species, reduce tree diversity, and could even change the structure of the forest in the near future (examples of species with declining populations include Acacia auriculiformis, Adina cordifolia, Boswellia serrata, Briedelia retusa, Buchanania lanzan, Cassia fistula, Elaeodendron glaucum, Emblica offi- cinalis, Eriolena quinquelaris, Hardwickia binata , Miliusa tomentosa, Schrebera swietenioides). Lantana can also have a devastating impact on the rich herbaceous understory.

We also observed that lantana litter inputs increase with increasing lantana cover and that the chemical composition of lantana litter is very different from the chemical composition of native forest species litter. The high nitrogen and low lignin content of lantana litter and the favorable microclimate beneath lantana canopies favour faster decomposition and release of nitrogen. This alteration in litter inputs and chemistry beneath lantana positively and significantly alter soil nitrogen availability, nitrogen mineralization, and total soil nitrogen, leading to a positive feedback: lantana increases soil nitrogen availability, and this, in turn, favours the growth of lantana. Our research suggests the need for prioritization of issues, designing of hierarchical management, and adaptive management strategies in response to lantana invasion. New research approaches warrant further investigation with more in situ experimentation. There is also an urgent need for information regarding the current and the potential distribution of lantana, for its monitoring, control, and possible eradication. All this can only be possible through increased public awareness of the harmful impacts of lantana on our landscapes. Amalgamation of all this will create a promising environment in which lantana research can be promoted, funded, and nurtured through a ‘Lantana working group’ for India. Biologists have invoked a number of potential explanations, or hypotheses, for the success of invasive species.


Fluctuating Resource Hypothesis: The ability of invasive species to preemptively take advantage of resources (light, soil nutrients, space) that become available following a disturbance. Presence of Empty Niches: Some species-poor ecosystems, such as oceanic islands, are thought to be more vulnerable to invasions than species-rich ecosystems. Enemy Release Hypothesis: Invasive species are often thought to be successful in their introduced environments due to the
lack of natural enemies to keep them in check. Evolution of Increased Competitive Ability: Freedom from enemies (herbivores or predators) might allow introduced species to allocate resources to growing larger, or faster.
Novel Weapons: Invasives may spread rapidly in new environments due to weapons like antimicrobial or allelopathic chemicals they exude from roots, which may inhibit other species in their new environments-the Allelopathic Advantage Against Resident Species of some invasive species is an example.
 
Gyan Prakash Sharma is at the Department of Environmental Biology University of Delhi, New Delhi, India.
AS Raghubanshi is a Professor of Botany at Banaras Hindu University, Varanasi, India
 

This article is from issue

4.1

2010 Mar

Corals or Cola: between the devil and the deep blue sea

Ocean-going vessels, which can account for the movement of 7,000-10,000 species at a time, are the single most important pathway for the dispersal of marine organisms. In addition, the intentional introduction of species for aquaculture is becoming an important mode of spread of potentially invasive species. One such species introduced to India is the seaweed Kappaphycus alvarezii.

Kappaphycus alvarezii in India
K.alvarezii was first introduced by the Central Salt and Marine Research Institute to Gujarat, in 1993, and later to Mandapam, in 1995, for large-scale commercial culture. K. alvarezii is used to produce the gelling agent, kappa carrageenan, which, in turn, is used in industrial gums, and in products such as soft drinks. The entrepreneurial venture of seaweed cultivation was undertaken by Pepsi Foods Limited (PFL) along with the Central Salt and Marine Chemicals Research Institute (CSMCRI) as a livelihood option for Self Help Groups (SHG) on an attractive buy-back arrangement. Large -scale culture of the species began in 2001 in the Palk Bay waters of Mandapam (which supports coral reefs and seagrass beds). By this time, the species had been classified as an invasive species and had wreaked havoc in the reefs of the Hawaiian and Caribbean islands. At the Kaneohe Bay, Hawaii, the alga is spreading at the rate of about 260 metres per year, and covers 50% of the benthic substrate in many areas. It can grow over, smother, and prevent fresh establishment by both coral larvae, and other benthic invertebrates and its invasive potential and ability to re-grow has aroused the concern of researchers.

Recent studies and our own in situ observations have shown that the species has spread to the marine protected areas within the Gulf of Mannar Biosphere Reserve. The alga is growing extensively on the branching coral colonies of Acropora formosa and A. nobilis, smothering the corals beneath. We found that all coral polyps below the algal mat were dead. The alga grows so densely and compactly on the coral colonies that, once well-established, it is impossible to separate the alga from the coral colony without causing severe damage or breaking. If left unchecked, and if no immediate remedial action is taken, the alga could well spread to other parts of the marine protected area and lead to large-scale ecosystem phase shifts and undermine the functionality of coral reefs. Some scientists (including Dr. APJ Abdul Kalam, former President of India), have hailed Kappaphycus cultivation as an important alternate livelihood option for communities.The culture of the alga is a lucrative activity and comes with a promising buy-back package, and central and state government support.

The entire issue of K. alvarezii raises questions about the integrity and responsibilities of science, scientists and people in power. While the idea of introducing K. alvarezii to provide a livelihood alternative for resource-dependent communities is certainly well-intended, the scientific information and research to support and justify its introduction is weak and unsubstantiated. The most audacious justification so far provided for the introduction of K. alvarezii was the discovery of a few strands of the species in the Andaman and Nicobar islands, leading to its being declared a native species.

If immediate measures are not undertaken to check the spread of large-scale culture, at least till the species is conclusively proven to be harmless, it could lead to complications in future management. With more people depending on the seaweed for livelihoods, conflicts could evolve if management policies are to be put in place.

Naveen Namboothri is a Post Doctoral Fellow at the Centre for Ecological Sciences, Indian Institute of Science, Bangalore, India. Mail at naveen.namboo@gmail.com
Kartik Shanker is an Associate Professor at the Centre for Ecological Sciences, Indian Institute of Science, Bangalore, India.
Illustrator: Kalyani Ganapathy

This article is from issue

4.1

2010 Mar

The Economics of Invasives

Invasive species are defined by the Convention of Biological Diversity as “.. those alien species which threaten ecosystems, habitats or species”.  If we take the expenditure to counter pests in agriculture, forestry and fisheries along with the output lost through invasive pests and pathogens in all sectors, and add to that the costs of both emergent and recurrent human diseases of international origin, the problem of invasive species makes all other environmental problems pale into insignificance.

The ecological and economic dimensions of the problem of invasive species are connected at different levels. The ecological changes that lead ecosystems to be more vulnerable to the impacts of invasions, the fragmentation, and disturbance of habitats, loss of biodiversity and increasing pollution burdens, are a direct consequence of economic behaviour. The ecological mechanism connecting invasive species, functional diversity and ecosystem resilience, the rate at which species are dispersed, is highly correlated with the growth of trade, transport, and travel. The main consequence of a loss of resilience is a reduction in the capacity of ecosystems to maintain functionality and the production of ecosystem services over a range of environmental conditions. This has direct implications for the value of both output and the underlying ecological assets—the natural capital—of the system. At every level, the ecological impacts of the economic activities involved are incidental to and are ignored by the actors concerned.

They are said to be externalities of the market transactions involved, meaning that they are not taken into account by the people engaged in those transactions. The economic problem of biological invasions is first to understand the nature of invasive species externalities and why they occur, second to evaluate the consequences they have for human well-being, and third to develop policies and instruments for their internalisation.

The economic forces that drive the problem of biological invasions include trends in land use that affect the vulnerability or susceptibility of ecosystems, trends in trade, transport and travel that affect the likelihood of species introductions, and trends in technology that affect species’ impacts. While globalisation has implications for all three, it is especially important for the second, influencing both the species involved in exchanges and the likelihood of their becoming invasive. The development of new trade routes has led to the introduction of new species either deliberately or accidentally, while the growth in the volume of trade along those routes has increased the frequency with which introductions are repeated. Species introductions are an externality of trade whose cost depends heavily on the way that ecosystems are exploited, both because that influences the vulnerability of those systems to invasion, and because it determines the value at risk from invasions.

A plant pathogen specific to a particular cultivated crop, for example, may have no implications outside of agricultural areas but may be devastating within those areas. Indeed, agro-ecosystems are typically the most vulnerable to invasive species, though also the most likely to be protected through controls. For the agricultural sector, for example, invasive species cause damage costs equal to around 50% of agricultural GDP in the USA and Australia, 30% in the UK, but between 80% and 110% of agricultural GDP in South Africa, India, and Brazil. To date, however, there are almost no studies of the implicit cost of habitat fragmentation, disturbance, or other landscape changes that affect the ease with which introduced species can establish and spread.

Where there is uncertainty about the likelihood of both introductions and the potential consequences of establishment and spread, the economic problem resolves into an evaluation of the relative net benefits of mitigation versus adaptation strategies: of preventive action versus control after the fact. What makes the problem particularly difficult is precisely the uncertainty attaching to several aspects of the invasion process. The historic likelihood that any given introduced species will establish, spread and inflict appreciable harm on the host system are low. However, the few species that do turn out to be damaging can be very harmful indeed—as was the case with the plague in Europe, smallpox, measles, and typhus in the Americas, or the Spanish Flu worldwide.

Three related issues turn out to be important in the theory of invasive species control. The first is the relative costs and benefits of alternative strategies and, in particular, the relative costs and benefits of mitigation versus adaptation strategies. The second is the degree of uncertainty involved, and the third is the rapidity and spatial extent of the potential spread of the invasive species. In the absence of reliable estimates of the net benefits of investment in the defensive capabilities of ecosystems themselves, the relative costs and benefits of alternative strategies generally involve a comparison of net benefits of inspection and interception or detection and eradication versus the control of established invaders. Of the three strategies-inspection (to prevent introduction), detection (to identify and eradicate species that have got past the border but have not yet spread) and control (management of species that have established and spread – inspection and detection are generally substitutes. Reducing the cost of one of these two strategies will increase the optimal effort devoted to it and reduce the optimal effort devoted to the other. However, both are substitutes for the control of established populations. The optimal inspection strategy depends on the level of uncertainty attaching to commodity groups and trade routes. Where the risks associated with particular commodity groups or trade routes are known, then a targeted inspection strategy makes sense.

But where the risks are not known, it is optimal to adopt a random audit approach. In an evolutionary system where the capacity to predict the consequences of novel events is limited by the lack of historical precedents, building that capacity through both monitoring and experimentation is an essential part of the policy toolkit. Biological invasions are an externality of international trade, and the solution to the problem requires policies to address that fact directly. These imply international cooperation, which means collaborative action both in terms of the multilateral agreements governing trade (the General Agreement on Tariffs and Trade) and the effects of trade (the Sanitary and Phytosanitary Agreement, and the International Plant Protection Convention), and of the intergovernmental organisations established to address different dimensions of the invasive species problem. For virulent human or animal pathogens that are likely to spread globally the scale at which the problem needs to be addressed is clearly global. At the same time, however, many introduced species spread locally at fast enough rates to make them problematic at that scale, but have no implications beyond that. Application of the subsidiarity principle implies that problems of that sort be dealt with at a local scale. Between such polar cases, however, lie problems that occur over a wide range of scales. The challenge in this for the economic, epidemiological and ecological sciences is to determine the spatial and temporal scale of the problem-including its causes and effects-and to analyze both the problem and the policy and management options accordingly.

Global protection against many invasive species risks is a public good of a very special kind-a ‘weakest link public good’. Because global protection is a weakest link public good, the lower the capacity of poor countries to deal with damaging and rapidly-spreading invasive species, the greater the exposure of all their trading partners. It follows that the more closely integrated in the global system, the greater the incentive to high-income countries to build capacity in the weakest links in the chain. In the case of human, animal and plant pathogens, the risk of infection or re-infection can be reduced by direct support of the sanitary and phytosanitary capabilities of low-income trading partners.
 
Charles Perrings is at the School of Life Sciences, Arizona State University, Tempe, USA. Mail at perrings@asu.edu
Harold Mooney is at the Department of Biological Sciences, Stanford University, Stanford, USA.
Mark Williamson is at the Department of Biology, University of York, UK.
 

This article is from issue

4.1

2010 Mar

Resolution to Restore

Protected areas (PAs) across India today are invaded by alien invasive species that include Lantana camara, Mikania micrantha, Chromolaenaodorata, Ageratumconyzoides, Parthenium hysterophorus, and Hyptis suaveolens. Although difficult, restoring landscapes colonized by invasive species is important for the conservation of biodiversity and for the sustenance of other ecosystem services.

Lantana (Lantana camara), one of the world’s most troublesome weeds, has virtually invaded all the tropical and subtropical regions of India. Although attempts have been made to control lantana by physical, chemical and biological methods, there has been little success either in its control or in the prevention of its spread. The control methods in use at present remain inadequate and infeasible owing to the sheer magnitude of the infestations, low land values, and lack of incentives for control. The lack of understanding of the species’ biology and lack of site-specific information of its ecology are major bottlenecks in developing effective tools for its management. It has yet to be recognised, for instance, that habitat degradation has triggered the invasion of lantana and that a final solution has to come in the form of habitat restoration. The methods that have been in practice for controlling lantana typically included chopping the main stem at the base, clipping aerial shoots and burning the clumps, and uprooting. Although these methods do bring about a short term reduction in the cover of lantana, with the onset of monsoons, profuse coppicing from multiple growing points occurs. Clipping is totally ineffective and only causes the clumps to spread and become harder. Burning results in coppicing from the buried meristematic zone and also increases soil erosion. Burning on a large scale is normally not resorted to in PAs, besides the fact that this practice may actually be advantageous to the weed in the long run. Uprooting, besides being labor intensive, disturbs the soil, exposes the buried seeds of lantana, and leads to their rapid germination.

Building on past experience with lantana management, and on the basis of a systematic assessment of its biology (the magnitude of its spread, its phenology, the distribution of growth points from which the plant re-sprouts or coppices, its architecture-including root system-soil microbiology and seed dispersal strategies) we ventured to develop a new management strategy, the ‘cut rootstock method’. This method involves the of lantana by cutting below the rootstock (see photograph), which we determined, experimentally, to be the most effective way of preventing it from coppicing. This is followed by ecological restoration using locally available legumes and grasses. Landscapes where lantana has been removed using this method need to be re-weeded, especially under trees where the bird dispersers of lantana perch. lantana removal must be followed by restoration of weed-free landscapes, preferably of grassland or forest communities depending on the needs of stakeholders, to prevent reinvasion by lantana or secondary invasion by other alien species. The new strategy was developed using experimental plots at Laldhang and Jhirna at Corbett Tiger Reserve and has subsequently been implemented successfully in other parts of Corbett (Uttara-khand), Kalesar National Park (Haryana) and Satpura Tiger Reserve (Madhya Pradesh).

The two experimental plots at Corbett have been the flagships of this control strategy that involved effective removal and ecological restoration of ‘weed-free landscapes’. The plots were browsed by chital and there was some mortality, but it was not a serious impediment because herbivore numbers were small, since this area had been a settlement till quite recently. We were able to achieve high survival rates (measured on an annual basis) for tree saplings because of modi!cation of soil conditions and the habitat by short grasses such as Penisetum ciliaris, Eulaliopsis binata, Heteropogon contortus, Paspalidium scrobicularis, Cynodon dactylon, and Sporobolus indicus, as well as leguminous species like Desmodium gangeticum, D. tri!o-rum, Flemingia bracteata, F. fruticosa, F. macrophylla, Indigof-era astragalina, and I. hirsuta). The experimental plots are now fully covered with a carpet of several grass species and legumes, with scattered trees.

At Laldhang, the Corbett management has scaled up the restoration plot to 64 ha. The area was fenced off due to frequent instances of cattle grazing from nearby villages. This plot now harbours luxuriant grassland with few interspersed trees and diverse avifauna. The Jhirna plot was left unfenced because there was no cattle grazing. This plot is now frequented by large herds of such browsers as chital and sambar, which form the major prey base for carnivores. So far there have been several recorded tiger sightings at Jhirna in the vicinity of the restoration plot (including carcasses of kills within the plots). The two plots established at Jhirna and Laldhang, using the integrated control and restoration strategy outlined above, are now used for demonstration of the technique. At both sites, the original relative density of lantana clumps varied from 80% to 100% and the areas were devoid of native species except for a few scattered trees that served as perches for bird dispersers of lantana. Within 2 years of the restoration program at Corbett (June 2005 to June 2007), both demonstration plots harbored grassland communities with annual and perennial native grasses and legumes. Several workshops and hands-on training programs were also held to enable foresters and park managers to scale up the lantana control and restoration measures, with field visits to the plots and demonstration of the technique employed. Various aspects of this model including the costs and benefits of clearing lantana and then converting the landscape into productive grasslands and woodlands, were highlighted to gain wider acceptance for the model. A simple manual was developed and widely circulated to aid foresters in removing lantana by the cut-rootstock method and to identify the grasses and legumes used in the Corbett model.

Subsequently, other forest managers of Uttarakhand State have adopted this technique. These forests include the Rajaji National Park, Landsdowne Forest Division, and Nainital Forest Division. In Corbett itself, lantana has been removed from over 2500 ha and restoration of these patches is in progress under the supervision of the park management. The advantages of the new management strategy over other control methods currently used are its cost-effectiveness, its simplicity, and ease of adoption and the successful control of lantana that the technique ensures, without the use of chemicals or exotic biological control agents, and with minimal disturbance of the soil. One of the major reasons for the popularity of the cut-rootstock method has been the fact that the restored patches do not require care after the first two years, since all the species used are native. Forest departments of other states, convinced by the effectiveness of the approach, have already removed lantana from several hundred hectares of forest land, particularly around Panchmarhi Biosphere Reserve in Madhya Pradesh and Kalesar National Park in Haryana.

However, as we have learned from our experience in Corbett, the ultimate success of such a program relies heavily on the conviction and motivation of stakeholders. Landscapes degraded by invasive species are often extensive, and even as weeds are eradicated from one area, propagule pressure and thus, reinvasion, can persist due to the continuing presence of weeds in other areas. A well-coordinated removal program followed by restoration at suitably large scales is necessary to tilt the scales in favor of native species. A strong determination by the park managers was crucial for the success of such a program.

The benefits of lantana eradication and subsequent restoration to grasslands in Corbett have been many: enhanced biological productivity, particularly in terms of palatable species of grasses and legumes; greater retention of soil moisture; prevention of soil erosion; enrichment of native biodiversity; the increased frequency of wildlife sightings; and enhanced recreational values, since Corbett is a favorite desti-nation for eco-tourists and ornithologists.
We anticipate that our observations on lantana management in Corbett and the success of the Corbett model will help in developing similar management strategies for other PAs that are presently overrun by lantana and also other weeds such as Mikania micrantha, Chromolaena odorata and Parthenium hysterophorus. However, any restoration program for these other invasive species would also need to be informed by an understanding of the biology of the invader, the local soil and micro climatic conditions, the status of the ecosystem, the larger landscape matrix, and most importantly, the requirements of the stakeholders.
 
Suresh Babu is a Research Scientist with the Centre of Excellence Program, Center for Environmental Management of Degraded Ecosystems, University of Delhi, India.
Cherukuri Raghavendra Babu is Emeritus Professor at the Centre of Excellence Program, Center for Environmental Management of Degraded Ecosystems, University of Delhi, India.
 
 
 
 
 

This article is from issue

4.1

2010 Mar

Lessons from History

Historical records from museums specimens, reports, and field notes area valuable source of information, and can provide perspective on long-term trends in species occurrence, and in specific cases can allow us to assess rates of population change. However, there are inherent biases in using this kind of data, such as no records of species absence, changes in sampling effort, spatial coverage, collection method or species focus that need to be accounted for before conclusions can be drawn.

Tobbias Jeppson and colleagues at the Swedish University of Agricultural Sciences examined over 42,000 historical records of 108 species of longhorn beetles in Sweden collected between 1908-2000 in order to determine if changes in species range coincided with changes in population abundance over time. They also factored rarity of species into this analysis; for instance, they predicted that rare species would decline in range if they declined in abundance.

The results showed that a number of species changed in abundance over time, with most species exhibiting increasing or stable trends while a few species showed declining trends in population sizes.

Changes in species range did not reflect changes in population size, and several species showed conflicting local and global trends. Rare species with increasing populations showed range expansions (unlike common species), and rare species with decreasing populations did not have larger range contractions. The authors suggest that merely using range of species in threat assessments might not suffice, and suggest using population sizes as well.

Further reading
Jeppsson T, A Lindhe, U Gärdenfors & P Forslund. 2010. The use of historical collections to estimate population trends: A case study using Swedish longhorn beetles (Coleoptera: Cerambycidae). Biological Conservation 143: 1940 – 1950.

This article is from issue

4.1

2010 Mar

Anatomy of an invader

In the continental United States, the Florida Everglades ranks among the top locations in regard to the number and coverage of introduced invasive species. Among Florida’s non-indigenous invasive flora, a relatively recently introduced species, Lygodium microphyllum, also known as Old World climbing fern, is quickly becoming one of its most widespread. L. microphyllum first drew attention for escaping cultivation and spreading into natural lands in the late 1960s. However, little was done with this observation until the late 1990s, when active scientific research on its ecology and management, including biological, chemical, and mechanical control activities began in earnest.

L. microphyllum, a vine-like fern native to the pantropics of the Old World, is typically considered a benign constituent of its native plant communities. However, in its Florida introduced habitat it can develop a near monoculture, smothering the native understory under a mat of vegetation that can be thicker than 1 metre. The fern also climbs into the native overstory, eventually shading and killing the canopy trees and resulting in their collapse. In some cases, the fronds act as a ‘fire ladder,’ allowing fire into the canopy and resulting in the death of the host trees.

After an invasive species has been studied for a time, a Gestalt of that species usually begins to emerge. Unfortunately, this has been slow to develop in the case of L. microphyllum.

After more than a decade of study, the reasons for its success as an invader only now begin to become apparent. To truly understand why an invasive plant is successful often requires examining the species across a range of scales and in both its native and introduced habitats. This has been the strategy my colleagues and I have used to discover why L. microphyllum is such a successful invader in its de novo environment. We began by studying its reprodution, including its mode of reproduction, the seasonality of sporulation and its spore production. Our subsequent studies examined the fern’s community ecology and its growth, both in situ and under controlled conditions, with various environmental treatments, including the influence of different light and different hydrological environments on its growth.

Several of these field and controlled studies were linked with landscape scale studies to develop a spatial model of the fern’s potential spread across its introduced environment. Finally, crosscontinental controlled and common garden studies were carried out to compare the growth of the fern in its native versus its introduced environment. We learned much from our studies of L.microphyllum’s reproductive biology. The fern is homosporous-it produces bisexual gametophytes and, consequently, it can reproduce by three different reproductive strategies: intragametophytic selfing, intergametophytic selfing and outcrossing. Intragametophytic selfing allows for long distance dispersal because it only requires one gametophyte to establish new colonies, since sporelings (i.e., young plants) result from the union of an egg and sperm on the same gametophyte. The second and third strategies require two spores to land close together and to germinate into gametophytes, such that a sperm can swim from one gametophyte to the other. In the case of intergametophytic selfing, the two gametophytes are from the same parent plant, while with outcrossing the two gametophytes are from different parent plants. Typically, homosporous ferns are conservative in their reproductive strategy, in that they only reproduce by one of the three modes. We found that this is not the case for L. microphyllum, which we determined was able to reproduce by all three mating strategies. However, we also discovered an interesting invasive twist to its reproductive strategy.

When a gametophyte first germinates from a spore, it is almost always female and this female produces a pheromone that makes all younger nearby gameotphytes to become male, thus assuring outcrossing. On the other hand, if after a few weeks there are no nearby spores or gametophytes, the female will become bisexual by producing male organs thus assuring fertilisation. Collectively, these highly plastic reproductive strategies help explain the fern’s long distance dispersal. We followed this initial work with studies related to the fern’s seasonal spore patterns, spore production and community ecology. In its introduced environment, we found that dense sites of L. microphyllum produce spores year round, with a peak production in the wet season. We estimated a density of 15,000 spores per cm2 of fertile leaf area, resulting in approximately three billion spores present at each invaded site at any given time. Our community-level studies showed that the presence of the fern coincided with a wet but not permanently inundated environment, and the coverage of the fern was greatest in a low-light understory environment, which likely facilitates its early establishment and growth. Anecdotally, L. microphyllum can be found in the various light conditions that exist in Florida’s native ecosystems, from low to high irradiances. Later evidence in controlled studies showed that small plants of L. microphyllum have the same relative growth rate after 3 months whether growing in 20, 50 or 70% full sun light. The ability of the fern to maintain high growth under different light environments appears to be related to its ability to allocate carbon to stems in a highly plastic and favorable manner. For instance, in the highest light environment, the plants grow on average 2.9 m for every gram of carbon invested, while in the lowest light conditions the plants grew 4.2 m per gram of carbon. These findings were supported by 2 years of field observations where under high light conditions the height of the actual climbing mat (i.e., not individual stems) increased 1.43 m per year on host canopy trees.

We were able to combine the attributes of the fern from our studies of its reproduction biology and ecology with a series of aerial transects to develop a spatial model predicting the future spread of this highly invasive fern across the landscape. In 1978, a survey of known individual L. microphyllum sites was published. In 1993, the South Florida Water Management District began conducting aerial surveys every 2 years to monitor invasive species, including L. microphyllum, locations across the Southern Florida region. Combined with our earlier data, we were able to construct a cellular automaton landscape model by calibrating the model from the 1978 survey data stepped through to 1993. Then we validated the model independently from 1993 to 1999 using the aerial data. Finally, by initializing our model with the 1999 aerial survey data, we predicted the spread of the fern to 2014, showing that 37% of the 40,000 km2 -grid cells covering Southern Florida would have L. microphyllum present by 2014. In the absence of aggressive control measures, this model predicted that the coverage of L. microphyllum could exceed the coverage of the top five invasive species in Florida by 2014. Fortunately, aggressive biological, chemical and mechanical control for this species has been ongoing.

These early studies highlighted some of the attributes that help explain L. microphyllum’s ability to be invasive in its introduced environment. Thee same studies, combined with intensive monitoring efforts, allowed us to develop a spatially explicit predictive model that assisted in sounding the alarm, particularly to policy makers, since most land managers had already understood the dire consequences that ignoring this species would have on natural lands.

However, this series of studies was not sufficient to fully understand why this species is so successful in its new environment, while being apparently so benign in its native range. Moreover, to optimise management of this species, further studies were needed to provide additional information that could be used in both biological control and land management efforts.

Interestingly, from our earlier controlled studies under different light conditions, we found that L. microphyllum allocated 48% of its carbon to belowground tissues, while a native vine in the same study averaged only 27%.

Interestingly, from our earlier controlled studies under different light conditions, we found that L. microphyllum allocated 48% of its carbon to belowground tissues, while a native vine in the same study averaged only 27%. The latter is a typical investment for a vine belowground, given that vines characteristically maximise their allocation to above ground tissues in order to reach greater heights to optimise light interception. L. microphyllum, on the other hand, is able to grow to great heights, but it does it with relatively little investment in carbon. It was this observation that first led us to consider that, perhaps, L. microphyllum is such a successful invasive because it may be released from its natural belowground enemies. This would allow the plant to allocate substantially to belowground tissues, which may confer a competitive advantage in the low nutrient environment of southern Florida. We tested this hypothesis through a series of coordinated control and field common garden studies in its introduced range in Florida as well as in its native range in Australia. We examined the fern’s growth across soil treatments, including soil sterilization to eliminate below ground natural enemies, and nutrient amendments to examine the possible interaction of soil nutrient availability. In addition, in the native range, we used three different fern source populations; one from Florida, one from the study location in Southeastern Queensland, Australia, and the third from northeastern Queensland, Australia. This third source is the reputed original location of the plants introduced into Florida. All populations tended to have comparatively poor growth in unaltered soil, but growth for all was stimulated by nutrient amendment and sterilisation. The overall effect of sterilisation, however, was muted under high nutrient conditions, except for the population originating from the same region as the soil used in Australia. Regardless of nutrient treatment, ferns in this population grew significantly faster in sterilized than non-sterilized soil.

So what does this mean? It appears that overall these results supported our hypothesis that the invasiveness of L. microphyllum in Florida is in part mediated by release from soil-borne enemies, and given the different response of the Southeastern Queensland population in Australia as compared to the other populations, a region-specific response may be occurring.

In both its native and introduced environment, L. microphyllum is found in wetland environments, but appears to be able to tolerate a range of hydrological conditions. Therefore, we conducted another study to examine L. microphyllum growth response to three hydrological treatments; flood, drought and field capacity. Field capacity and drought showed no differences in growth, while flooded plants had significantly slower growth. However, it should be noted that, even after more than 2 months of continuous inundation, the flooded ferns demonstrated positive relative growth rate.

This apparent hydrological plasticity is likely another contributing factor to the fern’s widespread establishment across a range of plant communities within the greater Everglades ecosystem. The fern’s growth response to differences in hydrological conditions was largely explained by changes in its specific innae (i.e., leaf) area and photosynthesis: in other words, morphological and physiological determinants of growth, respectively.

From these numerous studies conducted at various scales under different environmental conditions, as well as from comparisons between introduced and native habitats, we eventually developed an understanding of why L. microhpyllum is such a successful invader, while at the same time a relatively benign presence in its native environment. In essence, L. microhpyllum possesses several life-history characteristics that may enhance its competitive ability in Florida, including plastic reproductive strategies, and proli!c and continuous spore production. This fern appears to optimise its morphological and physioological characteristics to maximise photosynthetic area and minimise carbon costs in tissue construction, thereby gaining the ability to grow rapidly across gradients in light and hydrology. On the other hand, in its native range, this ability to grow across environmental gradients and reproductive output may be constrained by natural enemies. Our cross-continental comparisons appear to support our hypothesis that release from natural enemies belowground may also help explain the success of the fern in its introduced environment and, provocatively, given the different source population responses, it appears that a regional-scale version of the enemy release hypothesis might play a role in L. microphyllum’s invasive success.

Our findings demonstrate the importance of a biogeographical approach to invasive species studies and have implications for the identification of potential biocontrol agents. Moreover, the numerous studies at different scales in the fern’s introduced environment allowed us to make specific management recommendations, provided clues to its invasiveness that could then be corroborated by comparative studies of its native versus introduced ranges, and allowed us to develop a landscape-level model that could inform scientists, land managers, policy makers and the public, of the imminent danger of this particular invasive plant.

John Volin is a Professor of plant physiological ecology and Head, Department of Natural Resources and the Environment at the University of Connecticut, Storrs, CT, USA. Mail at john.volin@uconn.edu

This article is from issue

4.1

2010 Mar

healthy forests and healthy people: a problem of first among equals

Yuthi was in his twenties when he passed away. In the hinterland of India’s largest tiger reserve, few people keep track of their age; nobody here registers for social welfare, they do not have a doctor who asks them to fill up their age on a case sheet. Cystic fibrosis did not dry up his lungs. No, he was not killed by any of those diseases that strike the young. Diseases we study so much about in medical school; diseases with articles written about them in journals, and their correlations to genes with numbers like the latest version of MS Windows. Each has its ‘disability adjusted life years’ (DALY)1 index to emphasise its importance for inclusion in new programs that the State might decide to launch. But Yuthi was not affected by any of these rare and publishable afflictions. Yuthi died of malaria. It is quite ironic that a country with nuclear power still has anaemic mothers and malaria deaths!

Yuthi’s home was in Gandhigram, a remote corner in the state of Arunachal Pradesh in north-east India. He used to carry luggage for people like my friends and me, who were working on health and wildlife conservation in the forests around his village. I have been to Yuthi’s village a few times with wildlife scientists who work there. His village happens to be surrounded by one of the northernmost primary rainforests of the world. On one side is one of India’s largest tiger reserves, the Namdapha Tiger Reserve, and on the other, Myanmar’s Hukawng Valley Tiger Reserve, perhaps the world’s largest protected area (about 6000 sq. km). The place teems with biodiversity; in the past few years, the forests of Arunachal Pradesh have witnessed descriptions of a new species of bird, and even a primate. Although it is the tiger that has given this area its protected status, it is not the tiger that this and many forests in Arunachal Pradesh are known for. It is for their rich biodiversity, including several endemic insects, butterflies, birds and plants, that these forests are important. Such rainforests play a central role in wildlife conservation. However, climate change and global warming are distant issues for the Lisus and other tribes living in and around these forests. Tigers are not. Today there is a public debate on tiger deaths in India. Tigers and tribals are being pitted against each other in the hallowed chambers of policy-making conferences. Co-existence of tigers and tribals is being questioned.

In a situation where health care is financed literally out of people’s pockets, the fate of the tiger and the health of the people can get intertwined easily. Hunting becomes a means of supporting any unplanned and sudden catastrophic expenditure. Health invariably falls in this category of unplanned and sudden expenditure. With poor access to primary health care or community health workers, people in such remote regions often find that hunting can finance their long journeys to towns. And it does not help matters that private providers with expensive secondary level care and irrational practices are the first line health providers. The Lisus travel through about 150 km of thick forests, interspersed with rivers (often in spate), to reach ‘civilisation’. From there, they take a 6 hour bus journey to reach a town where they inevitably see a private provider. Roads, understandably, are a bigger concern than chloroquine, the antimalarial drug.

I work with another indigenous tribal people in south India, the Soligas. The forests around the Soligas have shrunken, leaving just a 540 sq. km area, that still remains only due to its legal protection by the State. The Soligas were semi-nomadic people, until they were forced to settle due, in part, to the shrinking forests, and in part, to the legal protection accorded to their forests; they couldn’t hunt anymore. However, a doctor who settled in these hills 25 years ago began to provide them health care. He went a step further and set up an NGO to assist them with education and livelihoods, in addition to healthcare. Today, the elderly Soligas talk about how climate has changed. They do not question it and do not need evidence. They see how their forests are getting choked from the outside.

These two contrasting cases, from northeast India and south India, exemplify the problems faced by people living in and around forests in India. However, the key is access to basic health care and livelihoods. Wildlife scientists today see this connection between people’s basic needs and their conservation ethic. In fact, a group of wildlife biologists started a community health care program and an education initiative among the Lisus. I went there to train a group of tribal youth in basic health care. Among other things, I wanted these youth to be able to identify and institute treatment against malaria. It was indeed satisfying that wildlife biologists had thought outside the box, and had looked beyond their paradigm of biodiversity conservation. Sadly, those of us in health care are yet to make this connection. A glance at our curricula reveals the level of medicalisation that we undergo. A glance at our policy shows how fragmented and restricted it is.

Shrinking forests are an important reason for climate change, and so are forests devoid of their biodiversity. People living in and around forests depend on them for their livelihood and daily needs. And when there are financial pressures for any of their needs, they turn to their resources, forests, finding themselves in the position of villains accelerating deforestation and emptying the forests. Isn’t this what our forefathers did? Can we blame them for destroying forests, just because we have now thought of legal protection for forests? Can we blame them for destroying forests, just because we are now concerned about climate change?

As urban India contends with population pressures and urbanisation, rural and tribal India face a different problem: of access, both physical and financial. It is time for health planners to consider the special needs and contextual factors affecting tribals and others living in or dependent on forests. It would be presumptuous of us to imagine that the widely publicised national programs for any of the diseases will change the situation of these people. Lisus or Soligas or for that matter others like them are not asking for malaria control programs or early cancer detection programs. They are asking for basic health care; financial and physical access to a person who can cure them of their illness and can help them live a healthier life. A malaria program for them is of even lower priority than a road or a source of livelihood, simply because they have accepted malaria deaths as their destiny. It is perhaps time to think beyond programs, and address health as a need in itself rather than health as a consequence of our programs.

Yuthi died of malaria in his early twenties only because he was born in a place where climate change and biodiversity mattered more than his life. In many areas the world over, where human-wildlife conflict prevails, the situation is similar. How are we going to prioritise between biodiversity conservation and the needs of people? Are our politicians and policymakers even seeing this problem of ‘first among equals’? The global health research agenda needs to gear up to answer these difficult questions – questions that matter to people dying of malaria in this age, when in many countries research is addressing carpal tunnel syndrome.

Prashanth N. S. (prashanth.ns@gmail.com) is at the Institute of Public Health, Bangalore, and a PhD student in public health at Institute of Tropical Medicine, Antwerp. He works with the Soligas in BR Hills, Karnataka.

This article is from issue

3.4

2009 Dec

sarus crane breeding success in uttar pradesh

At nearly six feet, the Sarus crane is the tallest flying bird in the world. It nests in wetlands, is strongly territorial, is a slow breeder – raising one or two chicks each year if successful, and is therefore susceptible to rapid population declines. It is suspected that attrition of natural wetlands following intensifying cultivation has forced this species into suboptimal conditions and reduced its breeding success. Though primarily a wetland species, Sarus cranes have been increasingly seen to nest in flooded rice paddies, a crop field that closely resembles wetlands. Farming poses a wide array of threats to breeding birds including mortality from trampling and machinery, reduced prey availability, and increased risk of predation of young birds exposed after the harvest. There have been few comparative studies in natural wetlands and in agricultural landscapes to ascertain how Sarus cranes are faring under current scenarios of altered land use. I carried out a study to estimate how many nests had at least one egg hatching, and how many hatched broods survived until the subsequent breeding season, and to assess what factors affect these parameters the most.

In India, the globally-threatened Sarus crane lives primarily in agricultural landscapes, especially landscapes with flooded rice paddies. The landscape in the districts of Etawah and Mainpuri in south-western Uttar Pradesh is a mosaic of agricultural croplands (with monsoonal rice and winter wheat) and wetlands that are flooded by seasonal monsoon rains and/or by leakages in irrigation canals. The area has the largest known Sarus crane population in the world, with populations appearing to be at least stable for the last 150 years despite the change in land use and growth in human populations. Farmers here revere Sarus cranes for their long pair-bonds, and causing willful harm to cranes is tantamount to a crime. Sarus crane pairs here are unique in maintaining year-round territories, which they actively defend against neighboring pairs. Eggs are laid and chicks are raised inside these territories, and chicks are driven out just before the subsequent breeding season. Both croplands and wetlands occur in territories to different extents, enabling an assessment of how breeding success is affected due to these two habitats. The cranes here use both croplands and wetlands to different extents, making this an ideal place to examine the effect of habitats on their breeding success.

Following the fates of Sarus crane nests at this site over two years revealed interesting patterns. Cranes nested preferentially in wetlands over rice paddies, but size of wetlands did not affect choice of nest sites. Nests were located as close as 3m and 20m to roads and villages respectively. Egg mortality was largely due to people (mostly children, and occasionally, farmers), but a relatively large number of eggs still hatched successfully. What is more, eggs in rice paddies were as likely to hatch as those in wetlands, and variables like height of vegetation or water depth at the nest site did not affect nest success. Proximity to roads, however, did limit nest success, supporting the observation that people were the most important cause of egg mortality. The lack of a habitat effect on nest success is unique to Sarus cranes in this area – it is not known for other birds that nest in agricultural fields, or even for Sarus cranes nesting in other landscapes. The success of nests in agricultural fields here is only possible due to farmers’ tolerance for Sarus cranes nesting in rice paddies, despite the considerable crop damage wrought by the birds – nesting cranes use rice stalks to build their large nests.

In addition to following the fate of nests, I also followed the fate of Sarus crane broods for two years in this landscape. Most of the mortality occurred when chicks were less than 2 weeks old, however, the reasons for this mortality could not be reliably determined. Broods that hatched later in the season had a lower probability of survival if territories were associated primarily with paddy, but not if territories had more natural wetlands. Broods that hatch later in the season are still unfledged when the crop is harvested, and this likely increases the chances of their being preyed upon in cropland. But when wetlands are present there is always some vegetation for chicks to hide in until they can begin to fly, and this can explain why brood survival improves in territories with more wetlands. The nature of these natural wetlands – whether they were perennial or seasonal – did not affect the likelihood of brood survival.

The presence of wetlands, then, did not necessarily affect the success of nests – nests fared equally well in rice paddies. The tolerant attitude of farmers was likely paramount in allowing this result. However, wetlands were very important to improve the likelihood of success of broods.

This study demonstrates that there are two vital ingredients required to improve the chances of Sarus cranes’ nests and broods surviving in this landscape. The first, that farmers retain their current positive attitudes towards cranes nesting in rice paddies. The second, that a patchwork of even very small wetlands is retained amid croplands.

It is also evident that landscapes outside strictly protected areas like national parks and wildlife sanctuaries can, in some instances, be of crucial importance for the conservation of certain species. It is unlikely that entire landscapes in densely populated Uttar Pradesh will ever become available for Sarus crane conservation, and the increase of cultivation at the cost of wetlands is imminent. Yet, some areas are still multifunctional, providing excellent crop produce while also allowing persistence of significant populations of otherwise-declining fauna like Sarus cranes. Conservation interventions in these situations must be carefully considered. Practices popular with conservation agencies, for example, cash compensation, must be avoided to ensure that existing attitudes are not eroded. Working with children and farmers to reduce unnecessary egg damage is already paying positive dividends, suggesting that simple but sustained site-specific efforts are adequate to reduce nest mortality. Attrition of wetlands continues, in part due to a governmental policy that designates shallow, water-logged areas as a category of ‘wastelands’, and in part due to lack of formal initiatives at the village level to encourage their retention. Altering this ethos is critical to ensuring the long-term survival of species like Sarus cranes.

Originally published as:

Sundar, K.S.G. 2009. Are rice paddies suboptimal breeding habitat for Sarus Cranes in Uttar Pradesh, India? Condor 111(4): 611-623.

K. S. Gopi Sundar (gopi@savingcranes.org) is a PhD student in the Conservation Biology Program at the University of Minnesota, USA, and a Research Associate of the International Crane Foundation, Wisconsin, USA.

This article is from issue

3.4

2009 Dec

revisiting the effects of captive experience on reintroduction survival in carnivores

Over the past several decades, reintroduction has become a popular tool in conservation. Since many wild populations are declining, captive-bred stock are increasingly used to restore or supplement wild populations. Previous investigations into the success of reintroduction projects using captive born animals found relatively low success rates (means ranging from 11- 38%); whereas mean success rates for projects reintroducing translocated wild-caught animals ranged from 31- 75%. Disparity between the successes of projects using captive-born versus those using wild-caught animals suggests that there are additional factors contributing to the failure of captive-born animals released into the wild.

These figures are from reviews published in the early 1990s, and since then very little research has sought to update these figures. The frequency of reintroduction projects over the past 10 to 20 years has markedly increased, thus it seems reasonable to assume that success rates should improve given our increasing experience in reintroduction techniques. In order to have a better understanding of the current success of reintroductions, a review was carried out on carnivore reintroduction projects that published or reported their results post 1990 up to, and including, 2005.

However, this review used survival instead of measuring overall project success – which is a subjective measurement. Not only can survival be used as an assay of animal welfare but also as a tool to assess factors contributing to individual successes or failures. We focused on carnivores because they are well represented in reintroduction programmes; this can be explained by the taxonomic bias found in species selected for conservation, where efforts are biased towards mammals, in particular ungulates and carnivores. Carnivores are particularly worthwhile to study in a conservation sense given their rapidly declining wild populations and their relatively poor response to captivity (i.e., high levels of abnormal behaviours and poor breeding success). There are many risks involved in reintroducing captive animals, however a main concern is that animals in captivity often show a loss of natural behaviours associated with fitness in the wild; in carnivores this is particularly with regard to hunting and breeding.

Based on a review of 45 projects of 17 carnivore species, results indicate that less than one in three captive-born carnivores released into the wild is likely to survive (32%) and only 52% of translocated wild-caught carnivores are likely to survive. Looking at survival rates as opposed to subjective measures of project success allows for investigation at the individual level, which will help to identify factors contributing to individual successes and failures. It is important to distinguish not only between survival and mortality of the individuals released, but also between survival and reproductive success upon release. The distinction between project success  and survivability also allows for the opportunity to consider the welfare of the animals released, since many captive-born carnivores die of starvation or of direct human contact, e.g., gun shots and motor accidents, and it is important that these factors are taken into consideration when planning a reintroduction. However, the overall success of the project is still essential to understanding the combined dynamics involved in successful reintroductions, such as appropriate habitat selection, budgeting financial costs, public support and so on.

Unfortunately, it is difficult to find reintroduction projects which report not only survivability but also reproductive success. Longterm monitoring is often costly and difficult to carry out, but it is essential if our aim is to increase the viability of reintroduction as a conservation tool. Given that survival rates are still relatively low and have not significantly improved over the past few decades, it is vital that we encourage all reintroduction projects (both successful and unsuccessful) to report their results so that we can improve the likelihood of survival for individual animals, both captive-born and wild-caught, as well as increase successful breeding upon release into the wild.

It is critical that there is further investigation into the effects of captivity on survival upon release into the wild as well as the viability of releasing captive-born animals into the wild for conservation purposes. Reintroduction methods and techniques need to be improved and recommendations should become more widely available to international agencies and institutions. Agencies and researchers should collaborate and work in conjunction with each other in order to better future conservation efforts.

Originally published as:

Jule, K.R., L.A. Leaver and S.E.G. Lea. 2008. The effects of captive experience on reintroduction survival in carnivores: A review and analysis. Biological Conservation 141(2): 355-363.

Kristen Jule (K.Jule@exeter.ac.uk) is a Teaching Fellow at the School of Psychology, University of Exeter, UK.

This article is from issue

3.4

2009 Dec

conservation needs of the andean frogs of peru

Frogs of the Batrachophrynus and Telmatobius groups are aquatic and semi-aquatic, midto high elevation amphibians that are distributed in the Andes of Ecuador, Peru, Bolivia, Chile and Argentina. Dramatic population declines have been reported for several species, and it is now thought that these Andean amphibians are severely threatened. A number of possible causes have been proposed for these declines, e.g., pollution, human consumption, disease, and climate change. Peru is considered a hotspot for these frogs; it is home to at least 40% of all known species of Telmatobius and 100% of all Batrachophrynus, so the stakes are high in this country. Given the critical situation faced by these Andean frogs, identifying and quantifying threats and their impact on wild populations is an urgent need in order to better inform conservation action. In this light, and using information from the Global Amphibian Assessment/IUCN Red List of Threatened Species and Peru’s Instituto Nacional de Recursos Naturales (INRENA) categorisation of threatened species, the following issues are addressed:

The Current State of Conservation Knowledge of Andean Frogs in Peru

Of a total of 25 species of Andean frogs reported for Peru, 80% are considered to be globally threatened by IUCN, while INRENA considers only 21.73% to be threatened.

The Most Pressing and/or Pervasive Threat Factors

Five factors have emerged as playing a role in population declines: disease, habitat degradation and destruction, harvesting, introduced species, and pollution. For about half of the species the threats are either unknown or there is insufficient information from which to draw inferences. Of those identified factors, water-associated pollution and harvesting are the prominent factors affecting the greatest number of species, followed by habitat degradation and destruction, introduced species (trout) and disease (chytrid fungus). In addition, recent research suggests that extreme climatic variation may be a factor impacting high altitude amphibian populations.

Their Conservation Needs

Andean frogs are taxonomically complex and generally poorly understood, so using novel approaches to identify the different species, as well as conducting ecological studies will help in addressing the issues of species identity and the frogs’ ecological requirements. In addition, monitoring populations and determining the relative contributions of threat factors are needed for a better understanding of population declines. Some factors (e.g., habitat degradation, pollution and introduced species) are also likely to affect other species and entire ecosystems, so conservation actions addressing these factors are bound to benefit more than just frogs. Multidisciplinary studies would be best suited to address these issues.

Although these research actions can help us understand declines better, these will continue to occur if no immediate action is taken. Emergency conservation measures can preliminarily address the more tangible anthropogenic factors. One measure that needs to be implemented as soon as possible is that of public outreach, where programmes showcasing the frogs, their habitats and the threats they face would help to increase awareness of their plight.

Conservation of Andean frogs will require substantial effort and commitment from a variety of decision-makers and stakeholders. The survival of these unique creatures and the health of their ecosystems will be severely compromised if no action is taken.

Originally published as:

Angulo, A. 2008. Conservation needs of Batrachophrynus and Telmatobius frogs of the Andes of Peru. Conservation & Society 6(4): 328-333.

Ariadne Angulo (ariadne.angulo@utoronto.ca) is currently the Focal Point for the IUCN Red List amphibian database (formerly the Global Amphibian Assessment), and is also the Focal Point for the IUCN Amphibian Specialist Group Red List Authority.

This article is from issue

3.4

2009 Dec

The decline of village common lands and changes in village society: south india, c.1850-2000

In nineteenth-century Tamil Nadu, a significant portion of village lands were not cultivated but used by villagers for grazing their livestock, and collecting fuel wood, fodder, manure, etc. Such common lands were, however, not jointly used equally by all villagers but, like the cultivated lands, were controlled by the dominant landholders in the village. Upper-class farmers had initiated the conversion of common land into cultivated land by the middle of the nineteenth century, and in effect had privatised a large amount of common land by the end of the century.

The hierarchical structure of landholding and control over natural resources started weakening at the end of the century, and villagers who had been excluded from owning land gradually acquired small pieces of land. Furthermore, probably in the 1920s and thereafter, Dalits and other landless people started cultivating village common land. A similar type of development occurred in other parts of India. Over the past forty years, Dalits in the Marathwada region of Maharashtra have encroached on village common land and established private ownership there, and from time to time this encroachment has been regularised by the state government.

There seem to be two types of community control of resources in India: the ‘elite dominant’ type and the ‘egalitarian’ type. It may be inferred that in nineteenth century Tamil Nadu, natural resources, including village common lands, would have been under the control of the elite dominant type, but as a result of socioeconomic changes in the village social structure, the elite failed to maintain this control.

Contrary to the former pattern of control, in some parts of India, in particular in mountainous regions where village society was not very differentiated but composed mainly of small landholding farmers without a large group of landless people, the use of natural resources was regulated by rules and norms approved in common among the villagers. It may be inferred that the creation of a more egalitarian village social structure could contribute to creating a prerequisite for preservative control of natural resources based on equal participation by all segments of village society. If the acquisition of land by, and the emancipation of, the landless, as witnessed in Tamil Nadu, implies a trend towards an egalitarian-type society, it may be seen as a positive development in the long run, in terms of environmental preservation.

The cases witnessed in Tamil Nadu and some other parts of India after the 1980s suggest that the growth of non-agricultural job opportunities could possibly weaken the pressure on land, and also induce farmers to change cropping patterns, leading sometimes to an expansion in farm forestry. The acquisition of land by the landless, and their emancipation, works toward reducing the supply of labour to the market and contributes to a rise in the wage level and the cost of supervising employees, thus leading to the expansion of farm forestry. Hence, the empowerment of the lower strata of village society may contribute to the conservation of natural resources by tightening the labour market.

Originally published as:

Yanagisawa, H. 2008. The decline of village common lands and changes in village society: South India, c. 1850-2000. Conservation & Society 6(4):293-307.

Haruka Yanagisawa (h-yanagisawa@eva.hiho.ne.jp) is Professor at the Chiba University, and Professor Emeritus, the University of Tokyo, Japan

This article is from issue

3.4

2009 Dec