A mother polar bear and cub near Churchill, Man.
Julienne Stroeve, the report's lead author, said with more than two degrees of warming above pre-industrial levels, both the southern and western populations of the Hudson Bay polar bear will become extirpated. That means they'd be extinct locally.Two subpopulations of polar bear in Hudson Bay will disappear in the next few decades if the world isn't able to cap global warming at 2 C, according to a new multi-disciplinary study.
The N.W.T. is home to the Southern Beaufort Sea, Northern Beaufort Sea and Viscount Melville Sound polar bear subpopulations. A limited number of tags to hunt from each subpopulation are given out each year. "If they can't find food, they will keep breaking into cabins and looking for something to eat or coming into town," he said.
"That can definitely give the impression that there are more bears in general, and without question, there are more bears around communities in some cases," he said. Julienne Stroeve, studying sea ice during an expedition. She is the lead author of a multi-disciplinary study which predicts Hudson Bay polar bears won't be able to survive a lengthening fasting period if climate warming isn't stopped.
Under two degrees of warming, ice free periods in that region are expected to last between 174 to 182 days. Stroeve said most ecologists think polar bears would not be able to survive a fasting period longer than 180 to 200 days long.
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