在努纳武特的利奥波德王子岛，北极熊正在捕食一只刚出生的厚嘴鼠

IF 1.9 4区地球科学 Q3 ECOLOGY

Polar Research Pub Date : 2022-04-12 DOI:10.33265/polar.v41.8176

Martyn E. Obbard, Christopher Di Corrado, João Franco, Roger Pimenta, Boris Wise

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引用次数: 0

摘要

在北极熊(Ursus maritimus)的环极地活动范围内，海冰的分布和持续时间正在减少，导致其主要猎物海豹的海冰减少。因此，北极熊在未来可能会增加对其他食物来源的依赖。陆地上的觅食有很好的记录，但在开阔水域的觅食却鲜为人知。我们报道了在努纳武特利奥波德王子岛附近的开阔水域成功捕食厚嘴murre (Uria lomvia)，并讨论了理解北极熊的行为可塑性及其机会主义觅食模式的意义。_______________________________ 查看补充视频

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Polar bear depredation of a thick-billed murre fledgling in open water at Prince Leopold Island, Nunavut

Sea-ice distribution and duration are declining across the circumpolar range of the polar bear (Ursus maritimus), resulting in a reduced access to ice-obligate seals, its primary prey. Consequently, polar bears may have increased reliance on alternative food sources in the future. Foraging on land is well documented but foraging in open water is less understood. We report the successful depredation of a thick-billed murre (Uria lomvia) in open water near Prince Leopold Island, Nunavut, and discuss implications for understanding the behavioural plasticity of polar bears and their opportunistic foraging patterns.

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来源期刊

Polar Research 地学-地球科学综合

CiteScore

3.20

自引率

5.30%

发文量

审稿时长

>12 weeks

期刊介绍： Since 1982, Polar Research has been the international, peer-reviewed journal of the Norwegian Polar Institute, Norway''s central institution for research, environmental monitoring and mapping of the polar regions. Aiming to promote the exchange of scientific knowledge about the Arctic and Antarctic across disciplinary boundaries, Polar Research serves an international community of researchers and managers. As an open-access journal, Polar Research makes its contents freely available to the general public. Original primary research papers comprise the mainstay of Polar Research. Review articles, brief research notes, letters to the editor and book reviews are also included. Special issues are published from time to time. The scope of Polar Research encompasses research in all scientific disciplines relevant to the polar regions. These include, but are not limited to, the subfields of biology, ecology, geology, oceanography, glaciology and atmospheric science. Submissions from the social sciences and those focusing on polar management and policy issues are welcome. Contributions about Antarctica are particularly encouraged.