Polar bear and walrus response to the rapid decline in Arctic sea ice

http://pubs.usgs.gov/fs/2012/3131/

The Arctic is warming faster than other regions of the world due to positive climate feedbacks associated with loss of snow and ice. The USGS has modeled the future responses of polar bear and Pacific walrus populations to this environmental change.

by Oakley, Karen L.; Whalen, Mary E.; Douglas, David C.; Udevitz, Mark S.; Atwood, Todd C.; and Jay, Chadwick V.

U.S. Geological Survey Fact Sheet 2012-3131