Species Prone to Extinction Under Environmental Change can Be Identified

by Rajshri on  June 15, 2008 at 11:27 AM Environmental Health
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 Species Prone to Extinction Under Environmental Change can Be Identified
Species that are prone to extinction under environmental change, and species that are likely to become a pest, can now be identified thanks to a study led by a University of Adelaide researcher.

The study is lead by Associate Professor Corey Bradshaw, from the University of Adelaide's School of Earth and Environmental Sciences.

Bradshaw's team of researchers analyzed life-history and ecological traits in more than 8900 species of the legume, or the Fabaceae, plant family and found a correlation between evolved species' traits and a particular susceptibility to a species becoming threatened or invasive.

"The urgency and scale of the global biodiversity crisis means we need good generalised predictors of a species' likelihood of going extinct or becoming invasive in non-native areas," said Associate Professor Bradshaw.

Previous studies have been limited by studying one or other of these fates in isolation.

"This study provides good evidence that we can take any group of species and predict how individual species will respond to changes in the environment through events such as climate change or habitat loss," said Bradshaw.

"Developing evidence-based rules of thumb for categorising poorly studied species according to their susceptibility will aid decision makers in choosing best ways to allocate finite conservation resources," he added.

According to Bradshaw, the lists of species to watch - both threatened and potentially invasive - should be expanded based on ranking of susceptibility traits.

"Our results are particularly valuable where there is sustained habitat loss or fragmentation, especially given the predictions that climate change will simultaneously promote the expansion of invasive alien species and greater extinction rates in others," he said.

Source: ANI
RAS/M

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