Monthly Archives: June 2011

Ocean life facing mass extinction: study

VIETNAMNET

Global warming, overfishing, and other man-made problems are pushing life in the oceans to the brink of a mass extinction unprecedented in millions of years, a study showed on Tuesday.

 

The seas are degenerating far faster than anyone has predicted, said the study of a 27-expert-panel. “We now face losing marine species and entire marine ecosystems, such as coral reefs, within a single generation.”The study to be presented to the United Nations was conducted by leading marine scientists who were brought together in Oxford earlier this year by the International Programme on the State of the Ocean (IPSO).

The study found out that time was running short to counter hazards such as a collapse of coral reefs or a spread of low-oxygen “dead zones.”

The study said, “Unless action is taken now, the consequences of our activities are at a high risk of causing, through the combined effects of climate change, over-exploitation, pollution and habitat loss, the next globally significant extinction event in the ocean.”

Scientists list five mass extinctions over 600 million years — most recently when the dinosaurs vanished 65 million years ago, apparently after an asteroid struck. Among others, the Permian period abruptly ended 250 million years ago.

“The findings are shocking,” Alex Rogers, scientific director of IPSO, wrote of the conclusions from a 2011 workshop of ocean experts staged by IPSO and the International Union for Conservation of Nature (IUCN) at Oxford University. (Agencies)

VietNamNet/Xinhuanet

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Fatal Frog Disease Found in Panama

LIVESCIENCE

A rapidly spreading, lethal amphibian disease has reached a site bordering the Darien National Park in Panama — the last area in the entire neotropics region to be free of the disease, scientists announced this week.

The disease has been linked to the dramatic population decline and extinction of frog species worldwide.

The infectious fungal disease, called chytridiomycosis, is thought to kill its victims by clogging their skin, essentially suffocating them. And it’s at least partly responsible — along with climate change, habitat loss and pollution — for the disappearances of 94 of the 120 frog species thought to have gone extinct since 1980. It has affected amphibians in South America, western North America, Central America, eastern Australia, and Dominica and Montserrat in the Caribbean.

And now it’s bumping up against Darien National Park, which is located in eastern Panama and is considered part of the neotropics — tropical highlands of the Americas.

Based on research of the disease’s spread in El Cope in western Panama, the researchers say they don’t have much time to save frogs in Darien: Within five months of the disease’s first case in El Cope, it wiped out 50 percent of the area’s frog species and 80 percent of its overall frog population. [7 Devastating Infectious Diseases]

“We would like to save all of the species in the Darien, but there isn’t time to do that now,” Brian Gratwicke, a biologist at the Smithsonian Conservation Biology Institute and international coordinator for the Panama Amphibian Rescue and Conservation Project, said in a statement.

In 2007, Doug Woodhams, a researcher at the Smithsonian Tropical Research Institute, tested 49 frogs at a site bordering the Darien and found that none of them tested positive for the fungus. But when he tested 93 frogs from the same area in January 2010, he discovered that 2 percent were infected with the disease.

“Finding chytridiomycosis on frogs at a site bordering the Darien happened much sooner than anyone predicted,” Woodhams said. “The unrelenting and extremely fast-paced spread of this fungus is alarming.”

In an effort to rescue some of Darien’s frogs from extinction, scientists at the Panama Amphibian Rescue and Conservation Project have already succeeded in breeding three species in captivity, and are aiming to save 20 more species.

“These animals that we are breeding in captivity will buy us some time as we find a way to control this disease in the wild and mitigate the threat directly,” Woodhams said.

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Final effort to save tiny rabbits from extinction

THE HINDU

Wildlife experts are making one last effort to save the endangered Columbia Basin pygmy rabbit, believed to be extinct in the wild since mid-2004.

The pygmy rabbit is the smallest rabbit in North America, and can fit in a person’s hand. Adults weigh about a pound and measure less than a foot in length. The previous effort to reintroduce the pygmy in 2007 ended badly, when they were quickly gobbled by their many predators.

Some 100 pygmy rabbits are being released this time into large wire enclosures.

The rabbits “who were raised in captivity for this last-ditch effort” must learn quickly to find food, breed and avoid being eaten. The wire enclosures give them a fighting chance to survive, scientists say.

“If this doesn’t work, I’m not sure what Plan B would be,” said Matt Monda of the Washington Department of Fish and Wildlife, who has been working for years to save the endangered species.

Only the Columbia Basin pygmy rabbit is endangered. Pygmy rabbits thrive in other Western states and are not protected.

This recovery effort is not without some controversy.

A big concern was all the engineering that has gone into these animals, Monda said. The original goal was to preserve the genetics of the Columbia Basin rabbit, but that proved impossible because of small numbers and problems that resulted from inbreeding.

The animals in the new effort are the result of cross-breeding with other pygmy rabbits from Idaho and Oregon.

“That was a controversial idea, to bring non-endangered rabbits and make them endangered,” Monda said.

Still, the U.S. Fish and Wildlife Service have approved the practice, said agency biologist Chris Warren, who is involved in the rescue effort.

A key feature of this new rescue effort is a six-acre enclosure with a 6-foot-tall wire fence is intended to keep out coyotes, badgers, weasels, snakes and to disrupt birds of prey. It has an electrified wire near the bottom to keep predators from digging under. The fence posts have spikes on top to prevent raptors from gaining a perch to hunt.

The enclosure surrounds plenty of sagebrush for food, and has dozens of artificial and real burrows where the rabbits can hide and, hopefully, breed.

Once the rabbits grow used to the big enclosure, they are being moved two at a time to smaller enclosures, where they are gradually introduced to predators through tunnels to the outside. Finally they are released outright.

Monda acknowledged the effort is somewhat unusual, in part because the rabbits bred in the safety of facilities at Washington State University, the Oregon Zoo and Northwest Trek have to be taught to fear predators. So far, the experiment appears to be a success, as some rabbits have already survived for weeks.

The project manager is Penny Becker, who was hired earlier this year after spending several years working on the recovery of wild dogs in South Africa.

Becker spends her days checking on her charges, including tracking those equipped with radio collars. A signal that does not move for six hours is presumed to be a dead rabbit.

Becker and assistant Chad Eidson travel to the many small enclosures as they chart the progress of each rabbit. All are numbered and some have names.

Predators are not the only issue. Conventional mating is difficult because female pygmy rabbits will only briefly tolerate the presence of males, and often fight with them, the scientists say.

Monda estimated that researchers have spent up to $250,000 a year for 10 years on work to save the rabbits.

The exact reasons for the disappearance of the rabbits in the Columbia River Basin of eastern Washington State are not clear.

But the basin was extensively developed for wheat and potato farming after Grand Coulee Dam was finished in the 1940s. It turned out the soft soil the rabbits need was also the most prized by farmers. Rabbit numbers started to slump as their habitat disappeared. But Monda also suspects that disease or freak weather took a heavy toll because numbers dropped very quickly two decades ago.

“Seven distinct populations happened to die out at the same time,” he said.

An environmental group that has advocated for the rabbits also believes there is no choice other than the current reintroduction.

“This is the last chance of saving any remnant of the pygmy rabbit,’” said Noah Greenwald of the Center for Biological Diversity in Portland, Oregon.

But, Greenwald said, “We got to this point because we didn’t take action to save the rabbit in the first place.”

If enough survive to reproduce next year it will be a measure of the program’s success, Monda said.

“We need a new explosion of kits (babies) on the ground,” Monda said. “We need Washington genes on the ground.”

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Costa Rican Plants in Danger of Extinction

 

 

 

 

 

 

 

 

 

 

COSTA RICA NEWS

A total of 27 plant species from the mountainous region shared by Costa Rica and Panama have been declared endangered.

 

The warning is the result of an investigation by the National Biodiversity Institute (INBio), which assessed the conservation status of 200 species in the area of La Amistad International Park.

 

According to biologist Frank Gonzalez, who is the head of the herbarium of INBio, nine of the 27 species listed are exclusive to Costa Rica and the Cordillera de Talamanca.

 

Gonzalez said that danger threaten trees, shrubs and creeping herbs, but a few have common names like cedro macho (Brunellia costaricensis), poor umbrella (Gunnera talamancana), Batambo (Chusquea costaricensis), and black oak (Quercus costaricensis).

 

The categorization of these 27 species as endangered took into account geographical criteria and reduction of the size of the population, said Gonzalez.

 

Gonzalez attributed habitat degradation to two factors related to human activity: deforestation and agricultural activities.

 

The investigation also involved the National Environmental Authority of Panama, and the Natural History Museum in London.

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Seagrass at risk of extinction

SCIENCE ALERT – UNIVERSITY OF WESTERN AUSTRALIA

A species of seagrass found only in western and southern Australian waters is at risk of extinction, according to a four-year international study.

The seagrass – Posidonia sinuosa – is one of 10 seagrasses worldwide identified in the study that are in danger of being lost forever, according to one of the study’s authors, Winthrop Professor Gary Kendrick of the Oceans Institute at The University of Western Australia.

Posidonia sinuosa is found in Western Australia from Kalbarri through to Eyre on the south coast and also in Cockburn Sound, which has had declining populations for several decades.  The seagrass is also found along the South Australian coast as far as Encounter Bay.

“Posidonia sinuosa is declining at an alarming rate – about 1.2 per cent every year,” Professor Kendrick said.  The loss of seagrasses has significant repercussions for both ocean ecosystems and for humans.

Seagrass meadows provide homes, food and nurseries for countless marine creatures, including commercial fish and crustaceans such as the western rock lobster.

They are also a major sink for carbon dioxide and are being developed as valuable ecosystems in the global carbon market.

“Globally, the biggest threat to seagrasses is coastal development,” Professor Kendrick said.

“Degraded water quality and the mechanical damage from dredging and port, industrial and urban growth on the coast are other major factors.

“Perhaps surprisingly for many people, climate change isn’t identified as a threat. Seagrasses are, in fact, one of the few groups expected to benefit from climate change.”

The seagrass study involved more than 20 leading researchers who used the Red List criteria of the International Union for the Conservation of Nature (IUCN) to determine the conservation status of 72 seagrass species.

It found that Posidonia sinuosa was in the ‘vulnerable’ category, the second highest threat classification after ‘endangered’, according to the IUCN system.

“This latest study is the product of four years of international workshops and input from hundreds of seagrass experts,” Professor Kendrick said.  “It will provide policy makers around the world with an official guide for seagrass conservation.”

The study was published in the journal Biological Conservation and is available online.

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Four primates in Indonesia on the brink of extinction

Wahyoe Boediwardhana

Four primates in Indonesia have been included on the list of 25 primates across the world on the brink of extinction.

The four primates are the Sumatran orangutan (Pongo abelii), Siau tarsius (Tarsius tumpara), the Javan slow loris (Nycticebus javanicus) and Simakubo or pig-tailed langur (Simias concolor).

ProFauna Indonesia chairman Rosek Nursahid said that the International Union for Conservation of Nature had been warning of the matter from as far back as 2000, but there had been no serious response from the government to protect the animals.

Read the rest at the JAKARTA POST

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Endangered Species Act Protection Sought for Boreal Toads

For Immediate Release, May 25, 2011

Contact: Collette Adkins Giese, Center for Biological Diversity,             (651) 955-3821
Megan Mueller, Center for Native Ecosystems,             (303) 546-0214       x 6
Erik Molvar, Biodiversity Conservation Alliance,             (307) 742-7978

Endangered Species Act Protection Sought for Boreal Toads

Once Common in West, Toad Suffers Sharp Declines From Disease, Habitat Destruction

DENVER— The Center for Biological Diversity, Center for Native Ecosystems, and Biodiversity Conservation Alliance petitioned the U.S. Fish and Wildlife Service today to protect boreal toads under the federal Endangered Species Act. The unique population of boreal toads native to the southern Rocky Mountains, Utah, southern Idaho and northeastern Nevada is in steep decline due to disease and habitat destruction.

“Boreal toads need protection under the Endangered Species Act to have any shot at survival,” said attorney and biologist Collette Adkins Giese of the Center for Biological Diversity. “By addressing threats like the destruction of wetland habitat we can still save these rare amphibians. But the window of opportunity is closing fast.”

Once widely distributed and common in the western United States, the boreal toad has experienced dramatic declines over the past few decades. Impacts have been severe in the southern Rocky Mountains, where a globally occurring amphibian disease known as chytrid fungus has wiped out most remaining boreal toad populations.

Endangered Species Act protection for the toad will increase federal funding for research to stem the deadly chytrid fungus and help save high-elevation stream and wetland habitat from threats like pollution and poorly managed recreation and livestock grazing.

“The boreal toad is the region’s only alpine, forest-dwelling toad,” said conservation biologist Megan Mueller of the Center for Native Ecosystems. “This unique toad is an indicator of the environmental health of our mountain streams and wetlands. The protections of the Endangered Species Act are needed to help safeguard the boreal toad from slipping over the brink of extinction.”

The Fish and Wildlife Service must determine whether the petition has merit within 90 days and make a final finding on toad protection within a year.

Background
In response to a petition filed by the Biodiversity Legal Foundation (later incorporated into the Center for Biological Diversity), the Service determined in 1995 that boreal toads in the southern Rockies deserved protection under the Endangered Species Act but that higher priority actions precluded listing. The agency added the southern Rocky Mountain population to its candidate list, which currently includes more than 250 species, most of which have been waiting decades for protection.

To make matters worse, under the Bush administration, in 2005, the Service reversed course and removed boreal toads from the candidate list. The agency concluded that boreal toads in the southern Rockies were not “significant” in part because they appeared genetically similar to other populations found elsewhere in the West.

Since then, two genetic studies have proven that boreal toads in the southern Rockies are part of an evolutionarily significant “clade” that includes boreal toads in Utah, northeastern Nevada and southern Idaho. This group of boreal toads contains as much genetic diversity as previously recognized species. Today’s petition seeks federal protection for these genetically unique boreal toads that are experiencing significant declines in population size and distribution. Alternatively, the petition asks the Service to provide Endangered Species Act protection for boreal toads in the southern Rocky Mountains only.

Mounting scientific evidence shows that amphibians are among the most imperiled species on Earth. Globally, 1,898 species of amphibians, or 30 percent of the 6,296 evaluated existing amphibian species, were deemed at risk of extinction in the International Union for Conservation of Nature’s 2010 Red List. In the United States, 56 amphibians, or about 20 percent, are at risk of dying out. Ubiquitous toxins, global warming, ozone depletion, introduction of nonnative fish and habitat destruction are key factors leading to their demise.

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