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solonavi 3 November 2009 Endangered & Extinction, General 429 views No Comment Print This Post  Email This Post

BBC

More than a third of species assessed in a major international biodiversity study are threatened with extinction, scientists have warned.

Out of the 47,677 species in the IUCN Red List of Threatened Species, 17,291 were deemed to be at serious risk.

These included 21% of mammals, 30% of amphibians, 70% of plants and 35% of invertebrates.

Conservationists warned that not enough was being done to tackle the main threats, such as habitat loss.

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The Red List, regarded as the most authoritative assessment of the state of the planet’s species, draws on the work of thousands of scientists around the globe.

The latest update lists amphibians as the most seriously affected group of organisms on the planet, with 1,895 of the 6,285 known species listed as threatened.

Of these, it lists 39 species as either “extinct” or “extinct in the wild”. A further 484 are deemed “critically endangered”, 754 “endangered” and 657 “vulnerable”.

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“In our lifetime, we have gone from having to worry about a relatively small number of highly threatened species to the collapse of entire ecosystems,” observed Professor Jonathan Baillie, director of conservation programmes at the Zoological Society of London (ZSL).

“At what point will society truly respond to this growing crisis?”

The updated data from the 2009 Red List is being made publicly available on the IUCN website on Tuesday.