publication . Article . 2000

Predation rate by wolves on the Porcupine caribou herd

Robert D. Hayes; Donald E. Russell;
Open Access English
  • Published: 01 Apr 2000 Journal: Rangifer (issn: 1890-6729, eissn: 1890-6729, Copyright policy)
  • Publisher: Septentrio Academic Publishing
Abstract
Large migratory catibou {Rangifer tarandus) herds in the Arctic tend to be cyclic, and population trends are mainly driven by changes in forage or weather events, not by predation. We estimated daily kill rate by wolves on adult caribou in winter, then constructed a time and space dependent model to estimate annual wolf (Canis lupus) predation rate (P annual) on adult Porcupine caribou. Our model adjusts predation seasonally depending on caribou distribution: Pannual = SIGMAdaily* W *Ap(2)*Dp. In our model we assumed that wolves killed adult caribou at a constant rate (Kdaily, 0.08 caribou wolf1 day1) based on our studies and elsewhere; that wolf density (W) dou...
Subjects
free text keywords: predation rate, Population Ecology; Interaction Wolf - Caribou, wolf, caribou, Porcupine herd, Canis lupus, kill rate, wolf; caribou; Porcupine herd; predation rate; Canis lupus; kill rate; Rangifer tarandus; Yukon, Animal culture, SF1-1100
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publication . Article . 2000

Predation rate by wolves on the Porcupine caribou herd

Robert D. Hayes; Donald E. Russell;