Hierarchical Habitat Selection by Barren-Ground Grizzly Bears in the Central Canadian Arctic

Using resource selection functions, we examined habitat selection patterns of barren-ground grizzly bears (Ursus arctos) in the central Canadian Arctic among and within home ranges. There was no difference between the sexes with regard to habitat selection patterns at the home range level (Wilks...

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Bibliographic Details
Published in:Oecologia 2002-06, Vol.132 (1), p.102-108
Main Authors: McLoughlin, Philip D., Case, Ray L., Gau, Robert J., Cluff, H. Dean, Mulders, Robert, Messier, François
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Bears
Biological and medical sciences
Ecosystems Ecology
Eskers
Forest habitats
Fundamental and applied biological sciences. Psychology
Grizzly bears
Habitat preferences
Habitat selection
Heathlands
Lichens
Mammalia
Shrubs
Tundras
Vertebrata
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Summary:Using resource selection functions, we examined habitat selection patterns of barren-ground grizzly bears (Ursus arctos) in the central Canadian Arctic among and within home ranges. There was no difference between the sexes with regard to habitat selection patterns at the home range level (Wilks' λ, approx.$F_{11,11}$=1.27, P=0.37). Bear home ranges contain more esker habitat, tussock/hummock successional tundra, lichen veneer, birch seep, and tall shrub riparian areas relative to the proportional availability of habitats in the study area. We observed differences in habitat selection within home ranges among levels of sex/reproductive status (Wilks' λ, approx.$F_{20,412}$=3.32, P
ISSN:0029-8549
1432-1939
DOI:10.1007/s00442-002-0941-5