The survival of the polar bear hinges on a transformation of our lifestyles. Without a significant reduction in greenhouse gas emissions, most subpopulations of Ursus maritimus will have disappeared by 2100, say researchers from the University of Toronto (Canada) who compared the projections climatic conditions in the Arctic region with the polar bear's resilience to prolonged fasting. They publish their results on Monday in the scientific journal Nature Climate Change.
See the ice floe through the eyes of a polar bear
“ Polar bears depend on sea ice to hunt seals which constitute the bulk of their diet, ” explains Rémy Marion, naturalist, director and specialist in the species. However, the rise in temperatures weakens the sea ice. As pointed out in the special report of the IPCC (Intergovernmental Panel on Climate Change) on the oceans and the cryosphere published in 2019,
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