Showing posts with label threatened species. Show all posts
Showing posts with label threatened species. Show all posts

Monday, October 15, 2012

World Primates At Risk: IUCN issues report listing 25 most threatened

The United Nations' Convention on Biological Diversity is being held right now in India and during the convention the International Union for the Conservation of Nature (IUCN) issued a report listing the 25 primates most threatened with extinction.  The list included many small monkeys and apes that are found in Southeast Asia, Africa and South America.

Primates like lemurs, langurs and other species of monkeys, along with apes like the mountain gorilla made the list.  These animals are being threatened by the loss of their habitat - tropical jungles being leveled for lumber or agricultural growth - in addition to being hunted for food or for the illegal wildlife trade.

Several species are standing on the brink of extinction, such as the Madagascar's northern sportive lemur, of which there are only 19 left in the wild.  More than half of the world's 633 primate species are at risk of extinction.

"Lemurs are now one of the world's most endangered groups of mammals, after more than three years of political crisis and a lack of effective enforcement in their home country, Madagascar," said Christoph Schwitzer of the Bristol Conservation and Science Foundation.  "A similar crisis is happening in Southeast Asia, where trade in wildlife is bringing many primates very close to extinction."

However, there are some success stories that alter the balance sheet somewhat.  Thanks to conservation efforts, several species - like India's lion-tailed macaque or Madagascar's greater bamboo lemur - have been brought back from the edge and the world has not lost a single primate species to extinction so far this century.  But we are very close to having that happen to some of these threatened species if decisive action is not taken.

So, there is a catastrophe looming, we have made some progress, but there is much more to be done.

However, progress can be painfully slow.  In February of 2010, the IUCN issued a very similar report - listing 25 threatened primates, again primarily in Africa and Southeast Asia.  The small primates, like lemurs, were particularly at risk.  But, as with the current report, there were some bright spots regarding species whose numbers were increasing due to conservation efforts.  The two reports were eerily similar.

It would seem there is a tug of war taking place in the jungles of some of our richest areas in terms of biodiversity.  Loses are being challenged by some gains, keeping the score at a sort of ecological draw.  The question is what will it take to significantly push the score in favor of the primates?  

Source: Huffington Post
Source: IUCN Red List

Thursday, October 1, 2009

Sea Turtles: many factors adding to their risk

All of the ocean's sea turtles exist today under some level of endangered or threatened status due to years of hunting in the past for their meat and shells. And though laws exist for their protection, they are still severely impacted by illegal poaching for their eggs and the turtles themselves, in addition to the number of turtles lost in commercial fishing nets.

Steps are being taken to protect sea turtles and ongoing research continues to investigate their living behaviors, but populations are still in critical decline and many species face an unknown future.

Here's some info on one particular species: the large, impressive Loggerhead Turtle.

According to a report by the National Marine Fisheries Service on the status of the loggerhead turtle which is listed as endangered under the U.S. Endangered Species Act, the turtle's worldwide population is still very much at risk of further declines. While a few areas in the world have shown some improvement at nesting beaches, most areas at at risk of further decline. In particular, the Northeast, Northwest and South Atlantic Ocean; the Mediterranean, and the North Indian Ocean.

Migratory patterns of loggerhead hatchlings are being studied as these migrations can be critical in determining risk exposure for turtles, in addition to finding correlations between nesting site and other more distant populations. Studies have shown that loggerhead turtles can travel great distances, making transoceanic migrations, possibly as far away as from the Pacific to the Atlantic. Hatchlings from South Pacific nesting sites, like Australia, have been recorded along the Peruvian coast, where no nesting sites exist.

It's not just poachers or natural predators that threaten eggs and hatchlings at nesting sites. When the subject of coastal development is brought up, many often think of construction that brings about pollution. While this is an issue, another coastal development action that threatens loggerhead and green turtles is "artificial beach nourishment." This a somewhat fancy term for beach re-shaping or just plain moving sand. Either to replace sand due to or to act as a deterrent to erosion, sand is moved in and beaches are reshaped. When this occurs in areas that are known turtle nesting sites, the re-sculpturing of the beach slope sometimes makes it difficult if not impossible for the female sea turtle to properly lay its eggs, particularly for the larger loggerhead turtle.

In addition to turtle conservation campaigns being initiated by major NGOs like Oceana, WildAid, and Ocean Conservancy , there are turtle specific organization, like the Sea Turtle Restoration Project, that are worth looking into.

Tuesday, August 11, 2009

California Desert Tortoise: under the gun of the U.S. Army

The US military does not exactly have a sterling record when it comes to balancing the concerns of military training and wildlife conservation issues. The controversy over Navy sonar tests and the effects on ocean mammals is still ongoing. And we also have one brewing in California involving the endangered desert tortoise.

The Army wishes to expand its tank training operations in the Mojave desert outside of Ft. Irwin and this encroaches on the federally designated critical habitat for the desert tortoise, a reptile technically listed as threatened by the IUCN. In 2008, under the previous administration, the U.S. Fish and Wildlife Service granted permission to move 650 tortoises as part of a phase approach; the total number to be moved was to be 2000.

So far, the results have not been promising for the tortoise as many have died from predation by coyotes. Nature establishes habitat boundaries in several ways: sometimes through restricting vegetation/food sources, sometimes through geological limits - like temperature ranges, and sometimes through bio-dispersion based on predation. Move an animal out of its normal locale and anyone of these or other factors can have disastrous effects.

While the results of the first phase have not been all together successful, the Army is still pushing ahead with their plan. But they are meeting resistance from several conservation organizations, including the Center for Biological Diversity - that perennial environmental watchdog that seems unafraid to take government agencies to task in the courts.

One of the oldest residents in California is faced with what could be a fatal eviction for the sake of developing more deadly artillery. You can read more about this in the Los Angeles Times and at the Center for Biological Diversity, which is running both a public awareness campaign and a legal battle.