Population Dynamics of Yellowstone Grizzly Bears
Knight RR and Eberhardt LL. 1985. Population Dynamics of Yellowstone Grizzly Bears. Ecology. 66(2):323-334
Data on the population of grizzly bears in the environs of Yellowstone National Park suggest that the population has not recovered from the reductions following closure of garbage dumps in 1970 and 1971, and may continue to decline. A computer simulation model indicates that the risk of extirpation over the next 30 years is small, if the present population parameters continue to prevail. A review of further analysis of the available data brings out the importance of enhancing adult female survival if the population is to recover, and assesses various research needs. In particular, a reliable index of population trend is needed to augment available data on the population.
- Type
- Journal Article
- Authors
- Knight, Richard; Eberhardt, Lester
- Units
- YELL
- Keywords
- Animal Studies, Bears (Ursidae), Breeding, Grizzly Bear (Ursus arctos), Mammals, Mortality, Population, Population Dynamics, Reproduction