POSSIBLE EFFECTS OF ELK HARVEST ON FALL DISTRIBUTION OF GRIZZLY BEARS IN THE GREATER YELLOWSTONE ECOSYSTEM
| Autor: | David S. Moody, Charles C. Schwartz, Mark A. Haroldson, Steve Cherry |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Ungulate
Ecology biology National park business.industry Grizzly Bears Distribution (economics) biology.organism_classification organization organization.mascot Pinus albicaulis Ursus arctos horribilis Geography General Earth and Planetary Sciences Cervus elaphus Ecosystem business Ecology Evolution Behavior and Systematics Nature and Landscape Conservation General Environmental Science |
| Zdroj: | Journal of Wildlife Management. 68:129-137 |
| ISSN: | 1937-2817 0022-541X |
| DOI: | 10.2193/0022-541x(2004)068[0129:peoeho]2.0.co;2 |
| Popis: | The tradition of early elk (Cervus elaphus) hunting seasons adjacent to Yellowstone National Park (YNP), USA, provides grizzly bears (Ursus arctos horribilis) with ungulate remains left by hunters. We investigated the fall (Aug–Oct) distribution of grizzly bears relative to the boundaries of YNP and the opening of September elk hunting seasons. Based on results from exact tests of conditional independence, we estimated the odds of radiomarked bears being outside YNP during the elk hunt versus before the hunt. Along the northern boundary, bears were 2.40 times more likely to be outside YNP during the hunt in good whitebark pine (Pinus albicaulis) seed-crop years and 2.72 times more likely in poor seed-crop years. The level of confidence associated with 1-sided confidence intervals with a lower endpoint of 1 was approximately 94% in good seed-crop years and 61% in poor years. Along the southern boundary of YNP, radiomarked bears were 2.32 times more likely to be outside the park during the hunt in ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text