Grizzly bear ecology in Bridger-Teton National Forest, Wyoming

Authors(s): J. H. Hoak, T. W. Clark and J. L. Weaver

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Publication Date: 0000-00-00

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Abstract: Grizzly bear (Ursus arctos horribilis) distribution and relative abundance in Bridger-Teton National Forest (BTNF), Wyoming were systematically studied for the first time in 1977-78. Operation of commerical outfitting camps and bear-human interactions were also studied to assess potential for conflict. Over 3500 km were logged on foot and horseback in field surveys for sight or sign of grizzlies, and information about grizzly bears was sought from Forest users. We compiled 288 reports for 1977-78 and 394 reports for the period 1968-78. Reports were distributed widely throughout northern sections of the Forest. An estimated 45 grizzlies occupied the Forest in 1977 -- 15 single bears and 10 sows with 20 young. In 1978, 37-38 grizzlies were tallied -- 21-22 single bears and 7 sows with 9 young. All 20 outfit camps examined had conspicuous bear attractants, including racks of game meat, garbage pits, stock feed, and unsealed human foods. Attractants in all camps were near concealment cover for bears and sleeping tents. Eighteen camps had histories of bear contact. Potential for bear-human conflict can be reduced by minimizing attraction of human-use sites for bears.

Keywords: Bridger-Teton National Forest, habitat, ecology, wildlife, management, population, mortality, human activity, food, forage, animal, mammal, bear, Ursidae, grizzly bear, Ursus arctos horribilis