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

Polar Research

João Franco¹  Boris Wise²  Christopher Di Corrado³  Roger Pimenta⁴  Martyn E. Obbard⁵ 

[1] Bombarral, Portugal;Durango, CO, USA;Garibaldi Highlands, BC, Canada;Vancouver, BC, Canada;Wildlife Research and Development Section, Ontario Ministry of Natural Resources and Forestry, Peterborough, ON, Canada;

关键词: climate warming;    plasticity in foraging behaviour;    uria lomvia;    ursus maritimus;    sea-ice loss;    jumplings;   

DOI  :  10.33265/polar.v41.8176

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown