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Climate Change

Global warming, sea-ice loss intensify polar bear decline

Polar bear populations are expected to decline in the Arctic Circle region, said a study published July 20, 2020 in journal Nature.

 
 

NEXT PHOTO ❯
By DTE Staff
Published: Wednesday 22 July 2020
Global warming and sea-ice loss will contribute to the decline of polar bears (Ursus maritimus), said the study. All photos courtesy iStock

Global warming and sea-ice loss will contribute to the decline of polar bears (Ursus maritimus), said the study. All photos courtesy iStock

The creatures depend on sea-ice for capturing seals, a source of sustenance for them in the freezing temperatures of the Arctic Circle.

The creatures depend on sea-ice for capturing seals, a source of sustenance for them in the freezing temperatures of the Arctic Circle.

The study established the threshold number of days polar bears can fast before cub recruitment and / or adult survival are impacted.

The study established the threshold number of days polar bears can fast before cub recruitment and / or adult survival are impacted.

Recruitment and survival impact thresholds may have already exceeded for some sub-populations, the study pointed out.

Recruitment and survival impact thresholds may have already exceeded for some sub-populations, the study pointed out.

Estimating decline of sub-populations was not possible as data linking ice availability to demographic performance was unavailable.

Estimating decline of sub-populations was not possible as data linking ice availability to demographic performance was unavailable.

High greenhouse gas emissions, rapidly declining reproduction and survival thresholds will endanger the continuance of all but a few high-Arctic sub-populations by 2100.

High greenhouse gas emissions, rapidly declining reproduction and survival thresholds will endanger the continuance of all but a few high-Arctic sub-populations by 2100.

Moderate emissions are unlikely to prevent the local extinction of some sub-populations within this century, the study said.

Moderate emissions are unlikely to prevent the local extinction of some sub-populations within this century, the study said.

जलवायु परिवर्तन से जुड़ी सभी खबरें हिंदी में पढ़ें।
Polar Bear Bear conservation Arctic circle Arctic ice Arctic ice melt Arctic Pole Arctic sea ice Arctic Sea ice extent Arctic warming Arctic winds Arctic sea Climate Change; … polar bears decline polar bear decline polar bears in … arctic circle polar bears polar bears arctic circle arctic region polar bears arctic region Climate Change Arctic Ocean India
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