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Wolverine population threatened by climate change
Date:2/3/2011

BOULDER--The aggressive wolverine may not be powerful enough to survive climate change in the contiguous United States, new research concludes.

Wolverine habitat in the northwestern United States is likely to warm dramatically if society continues to emit large amounts of greenhouse gases, according to new computer model simulations carried out at the National Center for Atmospheric Research (NCAR). The study found that climate change is likely to imperil the wolverine in two ways: reducing or eliminating the springtime snow cover that wolverines rely on to protect and shelter newborn kits, and increasing August temperatures well beyond what the species may be able to tolerate.

"Species that depend on snow cover for their survival are likely to be very vulnerable to climate change," says NCAR scientist Synte Peacock, the author of the study. "It's highly uncertain whether wolverines will continue to survive in the lower 48, given the changes that are likely to take place there."

Peacock's research focused on mountainous regions of the Northwest, the primary habitat of the wolverine population in the contiguous United States. The study did not look into the impacts of climate change on regions where wolverines are more numerous, such as Canada, although other research has indicated those areas will likely warm significantly as well.

The study was published last week in Environmental Research Letters. It was funded by the National Science Foundation, NCAR's sponsor.

An animal built for the cold

Wolverines make their home mainly in the boreal forests and tundra regions of North America, Europe, and Asia. Their thick, oily fur insulates them from frost and large padded paws help them run through deep snow. While some 15,000 or more wolverines are believed to roam Canada and an unknown number in Alaska, only a few dozen to a few hundred are believed to live in the contiguous United States, almost en
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Contact: David Hosansky
hosansky@ucar.edu
303-497-8611
National Center for Atmospheric Research/University Corporation for Atmospheric Research
Source:Eurekalert

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