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The key danger for polar bears posed by the effects of climate change is malnutrition or starvation due to habitat loss.Polar bears hunt seals from a platform of sea ice. Rising temperatures cause the sea ice to melt earlier in the year, driving the bears to shore before they have built sufficient fat reserves to survive the period of scarce food in the late summer and early fall.
But the lack of consistent estimates of population trends and survival rates for some polar bear subpopulations, which are distributed over a very large geographic area with differences in sea ice ...
The polar bear is white- or yellowish-furred with black skin and a thick layer of fat. It is more slender than the brown bear, with a narrower skull, longer neck and lower shoulder hump. Its teeth are sharper and more adapted to cutting meat. The paws are large and allow the bear to walk on ice and paddle in the water.
Due to climate change in the Arctic, this polar region is expected to become "profoundly different" by 2050. [1]: 2321 The speed of change is "among the highest in the world", [1]: 2321 with the rate of warming being 3-4 times faster than the global average. [2][3][4][5] This warming has already resulted in the profound Arctic sea ice decline ...
An isolated group of polar bears living in southeast Greenland has surprised scientists with its ability to survive in a habitat with relatively little sea ice. Polar bears face existential threat ...
Yet what most research has not also taken into account is the quick drop in polar bear populations. As the main predator of ringed seals, the polar bear’s extinction in the coming years will allow for ringed seal populations to flourish. In the end, ringed seals are estimated to thrive with no polar bears present in the Arctic and Sub Arctic ...
But this week, a polar bear attack killed a mother and her 1-year-old son in Wales, a tiny, remote Alaska whaling village whose bear patrol had lapsed. The incident — the first fatal polar bear ...
Susan J. Crockford. Susan Janet Crockford is a Canadian zoologist and climate change denialist known for her research and publications on polar bears. From 2004 to 2019 she was an adjunct professor in Anthropology at the University of Victoria. [1]
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