文章基本信息

标题：Predation and caribou populations
其他标题：Predation and caribou populations
本地全文：下载
作者：Dale R. Seip
期刊名称：Rangifer
印刷版ISSN：1890-6729
出版年度：1991
卷号：11
期号：4
页码：46-52
DOI：10.7557/2.11.4.993
语种：English
出版社：Swedish University of Agricultural Sciences
摘要：Predation, especially wolf (Canis lupus) predation, limits many North American caribou (Rangifer tarandus) populations below the density that food resources could sustain. The impact of predation depends on the parameters for the functional and numerical response of the wolves, relative to the potential annual increment of the caribou population. Differences in predator-avoidance strategies largely explain the major differences in caribou densities that occur naturally in North America. Caribou migrations that spatially separate caribou from wolves allow relatively high densities of caribou to survive. Non-migratory caribou that live in areas where wolf populations are sustained by alternate prey can be eliminated by wolf predation.
关键词：Population Ecology; Caribou;caribou; wolves; population dynamics; predator-prey relationships; population dynamics