Use of stable isotope analysis to identify food-conditioned grizzly bears on Alaska's North Slope
作者： Torsten W. Bentzen , Richard T. Shideler , Todd M. O'Hara
DOI: 10.2192/URSUS-D-13-00002.1
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摘要: Abstract Managers often must decide whether to use non-lethal intervention (e.g., hazing or relocation) lethal removal for resolving bear–human conflicts. Bears with a history of anthropogenic food are less likely respond favorably intervention. Stable isotope analysis can be useful tool determine bear's use. We analyzed nitrogen (N) and carbon (C) stable isotopes in 51 hair samples collected between 1991 2006 from 30 grizzly bears (Ursus arctos), their items, the oilfield region Alaska's Arctic Coastal Plain (USA) evaluate feasibility using identify human without direct observation. δ15N values varied by >4‰, indicating trophically diverse diet. found differences isotopic that we had observed on diet natural foods (NF) only those predominantly (food-conditioned [FC]). For 12 FC 15 NF bears, mean value...
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