Biodiversity: Some species could be wiped out 100 times faster than feared, say researchers

· Calculations of risk found to be seriously flawed

· Most-endangered may be months from extinction

• by Ian Sample, science correspondent

Mountain gorilla in the Virunga Mountains of Rwanda. Photograph: Andy Rouse/Corbis

Endangered species could become extinct 100 times faster than previously thought, scientists warned yesterday in a bleak reassessment of the threats to global biodiversity. They say methods used to predict when species will die out are seriously flawed and dramatically underestimate the speed at which some will disappear.

The findings, presented in the journal Nature, suggest that animals such as the western gorilla, the Sumatran tiger and Malayan sun bear, the smallest of the bear family, may become extinct much sooner than conservationists had feared.

Ecologists Brett Melbourne, at the University of Colorado at Boulder, and Alan Hastings at the University of California, Davis said conservation organisations should use updated extinction models to urgently re-evaluate the risks to wildlife. "Some species could have months instead of years left, while other species that haven't even been identified as under threat yet should be listed as endangered," said Melbourne.

http://www.guardian.co.uk/environment/2008/jul/03/endangeredspecies.scienceofclimatechange