Polar bear

The report identifies polar bears as highly vulnerable to climate change due to their extreme dependence on sea ice for hunting, mating, and traveling. While the species possesses some genetic diversity and mobility, these are offset by a low reproductive rate, long generation time, and the rapid decline of Arctic sea ice, which is projected to be nearly ice-free in the summer before mid-century. Key recommendations include protecting the "last ice areas" in northern Greenland and the Canadian Archipelago, increasing population monitoring, and managing rising human-wildlife conflict as bears spend more time on land.

• Polar bears are highly vulnerable to climate change because they rely on sea ice for essential activities including hunting, mating, resting, traveling, and maternal denning, and they depend on sea ice-dependent prey like ringed and bearded seals.
• The Arctic is experiencing significant warming, with September sea ice extent declining by 13.4% per decade between 1979 and 2015, and a nearly ice-free Arctic in the summer is likely before mid-century.
• Biological constraints, specifically a long generation time of approximately 15 years and a low reproductive rate (litter sizes of 1 to 3 cubs), limit the species' capacity to adapt to environmental changes.
• Climate change is altering the timing of polar bear movements and denning; females are spending more energy reaching denning sites when sea ice forms late, and bears are arriving on land earlier and departing later.
• The global population is estimated at 22,000-31,000 individuals across 19 subpopulations; as of 2014, three populations are declining, six are stable, one is increasing, and nine are data deficient.
• Conservation priorities include protecting the "last ice areas"—projected to be in northern Greenland, the polar basin, and northeastern parts of the Canadian Archipelago—and managing increased human-polar bear conflict as bears spend more time on land.

APA

Advani, N. (2016). Polar bear. WWF International. https://www.worldwildlife.org/documents/676/33cr0yeb2c_WWF_Polar_Bear_climate_assessment_web.pdf

Chicago

Advani, Nikhil. Polar bear. WWF International, 2016. https://www.worldwildlife.org/documents/676/33cr0yeb2c_WWF_Polar_Bear_climate_assessment_web.pdf.

Wikipedia

{{cite report |last1=Advani |first1=Nikhil |title=Polar bear |publisher=WWF International |date=November 2016 |url=https://www.worldwildlife.org/documents/676/33cr0yeb2c_WWF_Polar_Bear_climate_assessment_web.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{advani2016polar, author = {Advani, Nikhil}, title = {{Polar bear}}, institution = {WWF International}, year = {2016}, month = nov, url = {https://www.worldwildlife.org/documents/676/33cr0yeb2c_WWF_Polar_Bear_climate_assessment_web.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }