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详细书目
| 文件类型: | 文章 |
|---|---|
| 所有的著者/提供者: | Daniel S Light; Steven H Fritts |
| ISSN: | 0003-0031 |
| OCLC号码: | 477463514 |
| 语言注释: | English |
| 注意: | Fig. 1. -Known gray wolf mortality in the Dakotas since 1981 and nearest wolf populations |
| 奖励: |
摘要:
Gray wolves (Canis lupus) were extirpated in North and South Dakota in the 1920-1930s and rarely reported from the mid-1940s to late 1970s. From 1981 to 1992, 10 wolves were killed in the Dakotas, five of them in 1991-1992. Mortality sites were 46-561 km from the nearest known wolf population, and four were within a single 1175 km<sup>2</sup> area. Eight of the 10 animals were ≤2 years old, suggesting dispersing individuals. Mortality occurred in agrarian prairie areas with mean road densities of 0.71 km/km<sup>2</sup> and human densities of 3.5/km<sup>2</sup> Habitat at mortality sites was radically different from where these wolves apparently originated, demonstrating extreme flexibility in dispersal behavior of wolves. Further increase in wolf occurrences in the Dakotas is likely, related to wolf population increases and range expansion in adjacent states and provinces, especially Minnesota.
