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The Western Hudson Bay polar bears are off the ice for a month longer than their parents and grandparents. That hurts their hunting and ability to have healthy cubs that make it to adulthood.
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 even with those practices in place, scientists are still worried about polar bear populations, particularly in Canada. According to the WWF, 60 to 80 percent of the world's polar bears reside ...
Susan Janet Crockford is a Canadian zoologist 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] Crockford has gained attention for her blog posts on polar bear biology, in which she argues that polar bears are not threatened by climate change ...
The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed.The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb).
This food source impacts the health of polar bears negatively. They also begin targeting unusual animals as prey. [45] [46] The Arctic National Wildlife Refuge is the only refuge that regularly dens polar bears in that local region, and contains the most consistent number of polar bears in the area. [citation needed]
Jan. 1: Sheboygan Polar Bear Plunge. A New Year's Day tradition since 1973, the Sheboygan Polar Bear Plunge returns on Monday, Jan. 1 at 1 p.m., according to VisitSheboygan.com. The plunge takes ...
Stirling I, Lunn NJ, Iacozza J (1999) Long-term trends in the population ecology of polar bears in western Hudson Bay in relation to climatic change. Arctic 52, 294–306. Stirling I, Parkinson CL (2006) Possible effects of climate warming on selected populations of polar bears ( Ursus maritimus ) in the Canadian Arctic.