Population fragmentation and inter-ecosystem movements of grizzly bears in western Canada and the northern United States.

Conclusions: Grizzly bear population fragmentation corresponded to the presence of settled mountain valleys and major highways. In these disturbed areas, the inter-area movements of female bears was affected more than for male bears. Without female connectivity, small subpopulations of grizzly bears are not viable over the long term. Thresholds/Learnings: Females grizzlies reduced their movement rates drastically when settlement increased to >20% of a given area. In highly settled areas (>50% settlement), both sexes demonstrated similar reductions in movement. Synopsis: Researchers studied the current state and potential causes of population fragmentation in grizzly bears over western Canada, the Greater Yellowstone...

Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alberta, British Columbia, Canadian Rockies, Chilcotin Ranges and Fraser Plateau, Clear Hills and Western Alberta Upland, All tags... Coastal Western Hemlock, Columbia Mountains/Northern Rockies, Crown of the Continent/Greater Yellowstone Ecoregion, DNA, Demographic fragmentation, Land use configuration, Landscape fragmentation, Mackenzie and Selwyn Mountains, Middle Rockies, Montana, Peel River and Nahanni Plateaus, Sitka Spruce Forests, Skeena-Omineca-Central Canadian Rocky Mountains, Ursus arctos, Watson Highlands, Wyoming, Yukon-Stikine Highlands/Boreal Mountains and Plateaus, climate change, female connectivity, gene flow, grizzly bears, inter-area movement, meso-regional, microsatellites, population assignment,population fragmentation, population fragmentation, radio telemetry, species at risk, terrestrial mammals, Fewer tags