Extent, causes and timing of moose calves mortality in western interior Alaska

Alces
By: , and 

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Abstract

We examined the causes and timing of moose (Alces alces) calf mortality during 1988­ 90 in 2 locations in western interior Alaska. Annual survival rates of all calves in 1988 (0.34, n = 42) and 1989 (0.29, n =47) on the Nowitna National Wildlife Refuge (NWR) and in 1990 (0.25, n = 62) on the Koyukuk NWR were not significantly different. Survival rates of male and female calves were not significantly different during any year. Annual survival of single calves was significantly higher than that for twins in 1989 (0.56 vs. 0.20) and 1990 (0.37 vs. 0.21), but not in 1988. Black bears (Ursus americanus) killed 40% of all calves. Wolves (Canis lupus) killed 9% of the calves, unknown predators killed 8%, grizzly bears (Ursus arctos) killed 3%, and 5% died from other causes.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Extent, causes and timing of moose calves mortality in western interior Alaska
Series title Alces
Volume 27
Year Published 1991
Language English
Publisher Lakehead University
Publisher location Thunder Bay, Ontario
Contributing office(s) Alaska Science Center
Description 7 p.
First page 24
Last page 30
Country United States
State Alaska