A circumpolar monitoring framework for polar bears
作者： Dag Vongraven , Jon Aars , Steve Amstrup , Stephen N. Atkinson , Stanislav Belikov
DOI: 10.2192/URSUS-D-11-00026.1
关键词:
摘要: Abstract Polar bears (Ursus maritimus) occupy remote regions that are characterized by harsh weather and limited access. bear populations can only persist where temporal spatial availability of sea ice provides adequate access to their marine mammal prey. Observed declines in will continue as long greenhouse gas concentrations rise. At the same time, human intrusion pollution levels Arctic expected increase. A circumpolar understanding cumulative impacts current future stressors is lacking, long-term trends known from a few subpopulations, there no globally coordinated effort monitor effects stressors. Here, we describe framework for an integrated monitoring plan detect ongoing patterns, predict trends, identify most vulnerable polar subpopulations. We recommend strategies subpopulation abundance reproduction, survival, ecosystem change, human-caused morta...
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