Menu
Share
Share this story
Close X
 
Switch to Desktop Site

Study reports bad news for world's mammals

(Read article summary)

Melanie Stetson Freeman / The Christian Science Monitor / FILE

(Read caption) A cheetah at Metrozoo in Miami, Fla. The species is classified as 'vulnerable' by the International Union for Conservation of Nature.

About these ads

At least one-quarter of the world's known mammal species are at risk of becoming extinct, and about half are declining in population, a global survey released Monday morning has found.

The study – which took 1,700 experts in 130 countries more than five years to complete – was conducted as part of the International Union for Conservation of Nature's Red List of Threatened Species and will be published this week in the journal Science. It covers all of the 5,487 wild-mammal species known to humans since the year 1500, and is the most thorough study of its kind since 1996.

According to an article in Science magazine, which like the journal of the same name is published by the American Association for the Advancement of Science, the study lacked sufficient data for about 15 percent of the world's mammal species.

For some species, data were quite detailed, down to individual breeding rates. But many others remain virtually unknown.... Particularly sparse were data on some rodents and bats, several of which are known just from single museum specimens collected from remote regions. In all, 836 species were so poorly studied that it was impossible to tell what their conservation needs might be.

That means that the number of species actually threatened could be as high as 36 percent.

Next

Page:   1   |   2   |   3


Subscribe to Recharge
Get the Monitor stories you care about delivered to your inbox.

Loading...