气候变化领域集成服务门户(CCPortal): Cozy den or winter walk: the effects of climate and supplementary feeding on brown bear winter behavior

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DOI	10.1111/jzo.13174
	Cozy den or winter walk: the effects of climate and supplementary feeding on brown bear winter behavior
	Bogdanovic, N.; Zedrosser, A.; Hertel, A. G.; Cirovic, D.
发表日期	2024
ISSN	0952-8369
EISSN	1469-7998
英文摘要	Hibernation is a key adaptation for coping with unfavorable climatic conditions and low food availability in areas with severe winter conditions. While understanding the physiology and phenology of this adaptation has received considerable attention, comparatively little information is available on how hibernation will be affected by changing climate conditions. We used GPS telemetry data from 20 free-ranging brown bears monitored over 31 winters between 2007 and 2022, to identify behavioral strategies of bears during winter. We applied behavioral change point analysis to quantify brown bears' hibernation phenology in a population close to the bear's southern latitudinal range limit in Europe where supplementary food is available to bears year-round. We observed winter behavior patterns that varied across age and reproductive classes but also within individuals between winters. Among 31 winter events, we registered six cases in which bears exhibited a single hibernation/stationary period and 19 events where hibernation was split into up to five stationary periods. Moreover, six winter events did not show behaviors consistent with hibernation and individuals remained partly or completely active throughout winter. The movement of these active bears decreased with increasing snow depth. In addition, these winter-active bears showed higher fidelity to supplementary feeding sites during the winter period compared to the rest of the year. Our data suggest that an abundance of human-provided food resources during winter may facilitate the emergence of different wintering strategies in brown bears. Furthermore, supplemental feeding sites in combination with predicted mild winters and prolonged natural food availability suggest that the use of hibernation as an energy-saving strategy to overcome severe environmental conditions may decrease in the future.
英文关键词	brown bear; climate change; hibernation; supplementary feeding; Ursus arctos; winter activity; GPS telemetry; climate conditions
语种	英语
WOS研究方向	Zoology
WOS类目	Zoology
WOS记录号	WOS:001221134700001
来源期刊	JOURNAL OF ZOOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302699
作者单位	University of Belgrade; BOKU University; University of Munich
推荐引用方式 GB/T 7714	Bogdanovic, N.,Zedrosser, A.,Hertel, A. G.,et al. Cozy den or winter walk: the effects of climate and supplementary feeding on brown bear winter behavior[J],2024.
APA	Bogdanovic, N.,Zedrosser, A.,Hertel, A. G.,&Cirovic, D..(2024).Cozy den or winter walk: the effects of climate and supplementary feeding on brown bear winter behavior.JOURNAL OF ZOOLOGY.
MLA	Bogdanovic, N.,et al."Cozy den or winter walk: the effects of climate and supplementary feeding on brown bear winter behavior".JOURNAL OF ZOOLOGY (2024).