Fall 2005
Also in this Issue
Jamaican Iguana Makes Last Stand in Caribbean Islands Hotspot
Researchers Use Dogs to Track Species in the Field
New Government Decrees Provide Opportunities for Conservation on Siberut
Discoveries and Rediscoveries in the Biodiversity Hotspots


Send newsletter to a friend
Global Amphibian Summit Aims to Combat Alarming Amphibian Declines

Polypedates eques, an Endangered frog endemic to Sri Lanka, is one of many threatened amphbians threatened by ongoing habitat loss. © Don Church
According to the IUCN Red List, almost a third of the 5,743 known amphibian species are at risk of extinction; a staggering 43% of species are in decline. Thirty-four species have already disappeared, and an additional 113 species are possibly extinct. No less than 77% of threatened amphibian species are found only within the biodiversity hotspots.

Between September 17th and 19th, a group of experts met in Washington D.C. to develop an agenda to combat these precipitous and unprecedented declines. The meeting was hosted by Conservation International, and held under the auspices of the World Conservation Union – IUCN, with support from the IUCN/SSC Declining Amphibian Populations Task Force and the Global Amphibian Specialist Group. At the meeting, over 60 international experts developed an action plan to address what they identified as the six major reasons behind the declines: habitat degradation and loss, climate change, chemical contamination, infectious disease, invasive species, and over-harvesting. Chytridiomycosis, a fungal disease caused by Batrachochytrium dendrobatidis, has devastated amphibian populations in Central and South America, and appears to be spreading in other parts of the world. This disease was the topic of much discussion during the summit, as were other factors contributing to declines even within well-managed protected areas. To date, however, habitat degradation and loss have been the main factors contributing to amphibian declines globally, impacting nearly 70% of all amphibian species. Since many amphibians have highly restricted global ranges, the loss of a few sites can lead to the extinction of entire species.

The budget for the global amphibian action plan was estimated at US$404 million over five years and included four types of actions: researching the causes of declines and extinctions, documenting amphibian diversity, developing and implementing long-term conservation efforts, and developing a task force to respond to crises. Research will be directed primarily towards understanding the impact on amphibian populations of Chytridiomycosis and other diseases, global warming, and environmental contamination. Regarding documenting amphibian diversity, the action plan calls for the identification of 1,000 species in the next five years, and of 2,500 species in the next ten years; the plan also mandates continuously updating the Global Amphibian Assessment. Conservation projects will include safeguarding key habitats, preventing disease, controls on harvesting, captive breeding, and reintroductions. A huge fundraising effort will be needed to raise the recommended amount; nevertheless, during the workshop, funding from several sources, totaling US$700,000, was confirmed and other potential sources were identified.

The BBC provided consistent coverage of the summit, and also provides links to other relevant sites. Further information regarding the unprecedented amphibian declines can be found on the websites of the Global Amphibian Assessment and the Declining Amphibian Populations Task Force.

Learn more about the Amphibian Summit
Jamaican Iguana Makes Last Stand in Caribbean Islands Hotspot

A juvenile Jamaican Iguana Cyclura collei, CR, is tagged for research. The species is seriously threatened by habitat destruction for charcoal and predation by invasive mammals. © Byron Wilson
Arguably the rarest lizard in the world, the Critically Endangered Jamaican Iguana Cyclura collei hangs on to a precarious existence in the remote Hellshire Hills of southern Jamaica – the only sizable area of primary dry forest remaining on the island. Today, the iguana’s persistence is threatened by attack from both invasive predators and the charcoal burners who are systematically destroying the remnant forest. The iguana’s “re-discovery” in 1990 brought the Hellshire Hills into the international spotlight, and the area is now considered by the Alliance for Zero Extinction as a site of international importance to prevent imminent species extinctions.

With roughly half of its 114 km² consisting of primary, nearly pristine forest, the Hellshire Hills represent one of the finest examples of tropical dry forest remaining in the insular Caribbean. Not surprisingly, the area serves as an important repository of endemic biodiversity. The island’s only endemic land mammal, the Hutia Geocapromys brownii, VU, is abundant in Hellshire, as are many of the country’s endemic birds. The reptile fauna consists of 16 species, 12 of which are endemic, and many of which are considered threatened, including the Jamaican Boa Epicrates subflavus, VU. Other enigmatic species present include the Critically Endangered Jamaican Cave Frog Eleutherodactylus cavernicola, previously known only from a single cave system in Portland Ridge, and the Blue-tailed Galliwasp Celestus duquesneyi, recently rediscovered in the Hellshire Hills. The forest also boasts an impressive flora containing many Jamaican endemics.

To date, the only conservation activities in Hellshire have been localized efforts carried out by members of the Jamaican Iguana Recovery Programme, based at the University of the West Indies. With funding from the International Iguana Foundation, Conservation International, the Disney Wildlife Conservation Trust, and several U.S. zoos, these efforts are continuing, and are presently under expansion. In situ conservation tactics focus on the control of invasive predators such as the mongoose, wild pigs, and feral cats and dogs. Ex situ conservation strategies have included a captive “headstart” program and the establishment of satellite breeding programs at the Hope Zoo in Kingston and at six U.S. zoos. So far, 76 headstarted iguanas have been reintroduced into Hellshire, and captive breeding was achieved for the first time in 2004, at the Hope Zoo.

Clearly, the most ominous threat to the iguana, and to all the other natural inhabitants of the Hellshire Hills, is the daily destruction of the forest by illegal tree cutters – primarily charcoal burners. Long at the forefront of management plans for the iguana, protection of the Hellshire Hills forest has yet to become a reality. Encouragingly, the area gained protected area status on Earth Day, 1999, with the Jamaican government’s declaration of the Portland Bight Protected Area (PBPA) – the country’s most recent and largest protected area -- encompassing 520 km² of land and 1356 km² of sea habitat. Unfortunately, delays over the delegation of management authority have resulted in the PBPA being little more than a paper park; this includes the Hellshire Hills portion.

Fortunately, however, there is reason for renewed optimism; management authority has been delegated to two entities, and those agencies are showing an encouraging interest in the preservation of the Hellshire Hills. Indeed, there is now some hope that this amazing forest can be rescued from otherwise likely annihilation.

Learn more about the Caribbean Islands Hotspot
Researchers Use Dogs to Track Species in the Field

Researcher Heath Smith conducts large mammal surveys near Emas National Park with the help of dog “Rick”. © Carly Vynne
Monitoring the status of species in the wild can be a real challenge, particularly if the species is rare or difficult to track due to cryptic behavior. To minimize stress imposed on the species, researchers need to develop innovative, non-invasive field techniques. With this goal in mind, Conservation International-Brazil and The Moore Foundation supported a pilot-project in the Emas region of the Cerrado Hotspot -- one of the core areas in the Emas-Taquari Conservation Biodiversity Corridor -- using dogs specially trained to find animal scat in the field.

The species targeted for the study included Jaguar Panthera onca, Cougar Puma concolor, and Maned Wolf Chrysocyon brachyurus, which inhabit Emas National Park, a 1,300km² protected area and its surroundings. PhD student Carly Vynne of the University of Washington and researchers from the Jaguar Conservation Fund, Brasilia University and other institutions carried out the field work. The results were presented at the XIX Annual Meeting of the Society for Conservation Biology held in July 2005 in Brasilia, Brazil.

Three teams - composed of a dog handler, a research assistant and a dog - collected data on the target species from July 2003 to January 2004. Each dog was trained to find a scat, then to sit and await its reward: in this case, a tennis ball. The study area consisted of a grid, divided into 5x5 km cells. Each cell was sampled daily by a different team. By the end of the project, a total of 610 scat samples were collected, amounting to some 35 kilograms of feces, with 90% of samples originating from the Maned Wolf.

By plotting the findings on a map, the researchers were able to assess the habitat preferences of each species under study. While the Cougar was found in all habitats surrounding Emas National Park, it made extensive use of natural habitat edges when outside of the park. The Jaguar was found only in gallery forest and marsh habitats. The Maned Wolf showed no preference for any one type of habitat (Cerrado, grassland, marsh or forest) but the number of scats found had a relationship to the availability of natural patches in the matrix. By tracking scat locations, the researchers will be able to map the possible path used by each species, which is the basis for the definition of biological corridors.

Learn more about the Cerrado Hotspot
New Government Decrees Provide Opportunities for Conservation on Siberut

New legislation provides hope for the Kloss gibbon Hylobates klossii, VU and other threatened species endemic to the Mentawai islands. © John Mittermeier
Siberut island, off the west coast of Sumatra in Indonesia, is recognized as a key biodiversity area for conservation action. It is a home to four globally threatened primate species -- Kloss’s Gibbon Hylobates klossii, VU, Siberut Macaque Macaca pagensis, CR, Mentawai Langur Presbytis potenziani, VU, and Siberut Pig-Tailed Monkey Simias concolor, EN, as well as the last 30,000 indigenous Mentawai people. Various conservation projects have been initiated on this 4,000 km² Indonesian island in the Sundaland Hotspot over the last three decades, starting with the establishment of the Teiteibati Natural Reserve in 1976 and with recent major investment by the Asian Development Bank in the 1990s.

However, the island's biodiversity is still seriously threatened, above all by commercial logging. Now, three new government decrees provide the chance to safeguard Siberut's remarkable biodiversity and culture in perpetuity. In 2004, a presidential instruction (4 Tahun 2005) was signed by President Susilo Bambang Yudhoyono to provide a legal framework to combat illegal logging and the timber trade. At the same time, Departemen Kehutanan, the Department of Forestry, passed decrees (SK.159/Menhut-II/2004 and P.18/Menhut-II/2004) on ecosystem restoration. These open the possibility for organizations to bid for 55-year commitments to restore production forests for their biodiversity and ecosystem service values. BirdLife Indonesia is in the process of developing a bid for establishing such a concession at the Asia Log Timber concession in Jambi province. This precedent may provide a similar solution for Siberut, as well as for other key biodiversity areas such as the 900 km² Batang Toru watershed (PT Teluk Nauli concession) in North Sumatra. There are other policy options for conservation in the production forests of Siberut Island, including a decree by the Minister of Forestry (07.1/Kpts-II/2000) regarding "Criteria and Standards of Environmental Services Use Permits in Production Forest". The decree states that production forests can be used for various activities focused on non-timber forest product use, such as carbon sequestration, research, ecotourism, and water services (irrigation, drinking water, and power plants).

Finally, at the local level, the head of the Mentawai district passed a decree (41/2005) this April to cancel the permits of small scale logging on Siberut. A particularly urgent next step of action would be from the Departemen Kehutanan, and would involve canceling the permits of the two remaining large forestry concessions on Siberut. While these decrees don't in themselves ensure the island's sustainable future, taken together they provide new hope for conservation in Siberut - and, indeed, elsewhere in Indonesia.

Learn more about the Sundaland Hotspot
Discoveries and Rediscoveries in the Biodiversity Hotspots

The Mount Diablo Buckwheat Eriogonum truncatum was rediscovered in 2005 on Mount Daiblo in Calforinia. © Scott Hein/Save Mount Diablo
As ornithologists celebrated the historic announcement of the rediscovery of the Critically Endangered Ivory-billed Woodpecker Campephilus principalis in the Big Woods of eastern Arkansas, botanists too were rejoicing at the rediscovery of two plant species long feared extinct in the California Floristic Province Hotspot.

Last seen in 1936, the Mount Diablo Buckwheat Eriogonum truncatum, was rediscovered on the flanks of Mount Diablo in Contra Costa County, California. The flower, which resembles a small pink powder puff, was thought to be extinct because its native habitat on Mount Diablo had been overrun by invasive plant species. But in May 2005, Michael Park, a botanist and graduate student at U.C. Berkeley, rediscovered a site with at least 20 of the rare buckwheat plants in a remote corner of Mt. Diablo State Park. Not long after this rediscovery, botanists stumbled upon the California Dissanthelium Dissanthelium californicum, a grass species originally discovered on Santa Catalina Island in 1847, and subsequently on San Clemente and Guadelupe, and last seen in 1912. The species was thought to have been eliminated by introduced grazing animals on all three offshore islands. Both San Clemente and Catalina had been well surveyed botanically, and yet while conducting survey work in a burn area on Catalina, plant ecologist Jenny McCune happened upon the species. It is possible that the diminished grazing pressure in recent years, combined with very high rainfall in 2005, could have caused the grass to flourish for the first time in a century. Small patches of the grass have now been found in three locations on Catalina.

Unfortunately, such rediscoveries of species are all too rare; perhaps even more unusual is the discovery of new species that represent an entire new family previously unknown to science. In one such instance, scientists recently discovered a new family of freshwater fishes from the Río Usumacinta basin of Chiapas, México, in the Mesoamerica Hotspot. The species, a primitive catfish, was named Lacantunia enigmatica, and represents the only species in the new family Lacantuniidae. In ichthyology, there have only been two new families discovered in the past 60 years: the Coelacanth in 1938 and the Megamouth Shark in 1983.

Discoveries of new mammal families are even rarer, yet that is exactly what happened when biologist Rob Timmins of the Wildlife Conservation Society recovered specimens of an unknown species of rodent at local food markets in the Indo-Burma Hotspot, while conducting biodiversity surveys in Khammouan Province, Lao Peoples Democratic Republic. The Laotian Rock Rat Laonastes aenigmamus, or "kha-nyou" as it is known in Laos, represents the first new mammal family (Laonastidae) to science since the discovery of the Bumblebee Bat Craseonycteris thonglongyai, EN (family Craseonycteridae), the smallest chiropteran species, in 1974. Very little is known of the ecology of the Laotian Rock Rat, other than it is thought to be nocturnal and is believed to occur only in regions of rocky karst limestone outcrops.

© 2005 Conservation International
The most remarkable places on Earth are also the most threatened.
www.biodiversityhotspots.org
 

Conservation International Biodiversity Hotspots homepage Biodiversity Hotspots homepage Send newsletter to a friend Subscribe to newsletter