Spatial and temporal patterns of problem polar bears in Churchill, Manitoba

作者: Lindsay Towns , A. E. Derocher , I. Stirling , N. J. Lunn , D. Hedman

DOI: 10.1007/S00300-009-0653-Y

关键词:

摘要: Human–bear interactions near the town of Churchill, Manitoba occur annually because Western Hudson Bay polar bear population spends 4–5 months on-land each year when sea ice melts completely. Significant changes have occurred in ecosystem and as a result climate warming; however, how these may influenced human–bear Churchill is unclear. This study examined temporal spatial patterns 1,487 problem bears captured area from 1970 to 2004. We also relationship between environmental variables well Nunavut harvest. The number individual caught varied 10 90 individuals per increased over time. Subadult males comprised 39%, subadult females 23%, adult 18%, with young 14%, solitary 6% captures. Bears that became were closer proximity area. Nutritional stress northward shift distribution spend summer northeastern account for increase numbers. date freeze-up, which getting progressively later, was best predictor explaining annual variation occurrence bears. These results provide an understanding warming directly impact behaviour. information allow wildlife managers predict relative levels thereby implement effective management strategies improve human safety conservation

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