Monitoring grizzly bear population trends

Publication Type:

Journal Article

Authors:

Eberhardt, L. L.; Howard, R. R.; Blanchard, B. M.

Source:

Journal of Wildlife Management, The Wildlife Society, Volume 50, Issue 4, p.613-618 (1986)

Call Number:

A86EBE01IDUS

Keywords:

Ursus arctos horribilis

Abstract:

A simple difference equation model was developed to provide additional perspective on observed mortality and trend data on Yellowstone grizzly bears (Ursus arctos horribilis). Records of mortalities of adult females from 1959 to 1985 were utilized, in conjunction with data on females with cubs. The overall downward trend of observed numbers of females with cubs generally agrees with the model calculations but does not adequately reflect mortality from 1970 to 1974. The model may be useful in developing a composite index of population trend.

Notes:

Reference Code: A86EBE01IDUS

Full Citation: Eberhardt, L. L., R. R. Howard, and B. M. Blanchard. 1986. Monitoring grizzly bear population trends. Journal of Wildlife Management 50(4): 613-618.

Location: ANIMAL EF: URSUS ARCTOS