space San Diego Natural History Museum--Your Nature Connection[Museum Webcasts]

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Polar Bears, Seals, and Climate in Hudson Bay and the High Arctic
Ian Stirling, Ph.D., Senior Research Scientist, Canadian Wildlife Service; and Adjunct Professor, University of Alberta, Edmonton

Long-term climate warming in western Hudson Bay is causing the sea ice to break up earlier, with negative effects on polar bears. From 1981 through 2007, the condition of polar bears declined significantly—a trend that is correlated with steadily warming spring air temperatures over the last 50 years. Learn about the significant relationship between the time of breakup and the condition of adult males and females (i.e., the earlier the breakup, the poorer the condition of the bears). Potential future problems for polar bears and seals will be discussed.
Wednesday, April 23, 2008