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详细书目
| 文件类型: | 文章 |
|---|---|
| 所有的著者/提供者: | John L Oldemeyer; William J Barmore; Douglas L Gilbert |
| ISSN: | 0022-541X |
| OCLC号码: | 479919513 |
| 语言注释: | English |
| 注意: | Fig. 1. Winter distribution of bighorn sheep on the northern Yellowstone winter range. |
| 奖励: |
摘要:
Bighorn sheep (Ovis c. canadensis) were intensively studied on the northern Yellowstone winter range during the winter of 1965-66, with additional data gathered the following two winters. Censuses showed a stable or slowly increasing population of about 250 animals. Grass and browse utilization was moderately high. During the winter of 1965-66, bighorns ate 61 percent grass, 17 percent forbs, and 22 percent browse. Bluebunch wheatgrass (Agropyron spicatum) was the most common species in the diet. Snow cover was light that winter, and competition with elk (Cervus canadensis) was slight to moderate.
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添加标签 目的是为 "Winter Ecology of Bighorn Sheep in Yellowstone National Park".
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