Population Dynamics of Yellowstone Grizzly Bears

  • Knight R
  • Eberhardt L
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Abstract

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 yr is small, if the present population parameters continue to prevail. A review and further analysis of the available data brings out the importance of enhancing adult female surival 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.

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Knight, R. R., & Eberhardt, L. L. (1985). Population Dynamics of Yellowstone Grizzly Bears. Ecology, 66(2), 323–334. https://doi.org/10.2307/1940382

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