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  • http://hdl.handle.net/10402/era.24865
  • Getting to the root of the matter: grizzly bears and alpine sweetvetch in west-central Alberta, Canada
  • Coogan, Sean C P
  • English
  • alpine sweetvetch
    Hedysarum alpinum
    grizzly bear
    Ursus arctos
    functional response
    habitat segregation
    resource selection
    sexual dimorphism
    Pacific Decadal Oscillation
    nutritional landscape
    spatial variation
    temporal variation
    crude protein
    consumer-resource dynamics
  • Dec 20, 2011 12:15 PM
  • Thesis
  • English
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  • Wildlife habitat selection is influenced by gender, offspring-dependency, resource availability, and spatiotemporal variation in resource nutrition. In consideration of these factors, this thesis examines alpine sweetvetch (Hedysarum alpinum) root and its relationship to grizzly bears (Ursus arctos) in west-central Alberta, Canada. I observed sexually segregated, offspring-dependent functional responses in selection for sweetvetch habitat that was further affected by inter-annual patterns in spring climate (i.e., Pacific Decadal Oscillation). Selection patterns suggested that habitat segregation was due to differences in nutritional requirements between sexes and offspring predation risk. Nutritional analyses of roots indicated that temporal patterns in protein content were influenced by spatial variations in temperature and soil. This spatiotemporal heterogeneity benefits grizzly bears by prolonging the availability of nutritious roots, and may explain why sweetvetch habitats in the mountains were relied upon throughout the spring and how bears could rely on a root digging (habitat) strategy.
  • Master's
  • Master of Science
  • Department of Renewable Resources
  • Wildlife Ecology and Management
  • Spring 2012
  • Nielsen, Scott (Renewable Resources)
  • Derocher, Andrew (Biological Sciences)
    Hik, David (Biological Sciences)