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Filters: Tags: monitoring 1-Changes in Plant and Animal Distribution: Fauna (X) > partyWithName: Belant, Jerrold L. (X)

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The fundamental niche of a species is rarely if ever realized because the presence of other species restricts it to a narrower range of ecological conditions. The effects of this narrower range of conditions define how resources are partitioned. Resource partitioning has been inferred but not demonstrated previously for sympatric ursids. We estimated assimilated diet in relation to body condition (body fat and lean and total body mass) and reproduction for sympatric brown bears (Ursus arctos) and American black bears (U. americanus) in south-central Alaska, 1998?2000. Based on isotopic analysis of blood and keratin in claws, salmon (Oncorhynchus spp.) predominated in brown bear diets (>53% annually) whereas black...
    map background search result map search result map Microscale den-site selection of grizzly bears in southwestern Yukon Moose Distribution Relative to Human Development in a National Park INTERSPECIFIC RESOURCE PARTITIONING IN SYMPATRIC URSIDS Microscale den-site selection of grizzly bears in southwestern Yukon Moose Distribution Relative to Human Development in a National Park INTERSPECIFIC RESOURCE PARTITIONING IN SYMPATRIC URSIDS