1. Vital rates of two small populations of brown bears in Canada and range‐wide relationship between population size and trend
- Author
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Michelle L. McLellan, Rahel Sollmann, Bruce N. McLellan, and Heiko U. Wittmer
- Subjects
0106 biological sciences ,Population ,brown bear ,small population ,Biology ,survival ,010603 evolutionary biology ,01 natural sciences ,03 medical and health sciences ,lcsh:QH540-549.5 ,Population growth ,carnivore conservation ,Ursus ,education ,Ecology, Evolution, Behavior and Systematics ,Original Research ,030304 developmental biology ,Nature and Landscape Conservation ,0303 health sciences ,education.field_of_study ,Ecology ,Population size ,grizzly bear ,Small population size ,biology.organism_classification ,Ursus arctos ,Threatened species ,lcsh:Ecology ,Vital rates ,Inbreeding ,population recovery ,Demography - Abstract
Identifying mechanisms of population change is fundamental for conserving small and declining populations and determining effective management strategies. Few studies, however, have measured the demographic components of population change for small populations of mammals (, This research investigates population dynamics in two adjacent but genetically and geographically distinct, threatened brown bear (Ursus arctos) populations in southwestern British Columbia, Canada, following the caseation of hunting in that area. Differences in independent female and cub survival between the populations resulted in population increase in the larger, partially connected population, and population decrease in the smaller, isolated population. We suggest that when populations are small and isolated, population growth is rare and, even with intensive management, becomes prohibitive for population recovery.
- Published
- 2021