| Statistical Programs |
| College of Agricultural and Life Sciences |
University of Idaho |
| Seminar Announcement |
| "Applied Statistics in Agriculture" |
|
Density-dependence and sustainability of
harvest on greater sage-grouse populations
Presented By |
| Dr. Edward O. Garton |
|
Department of Fish and Wildlife Resources University of Idaho |
|
Tuesday, November 8 3:30 P. M. Ag. Science 62 |
| Populations of greater sage-grouse (Centrocercus urophasianus) have declined more than 50% in western North America during the past 50 years. Petitions to list the species under the United States' Endangered Species Act were rejected recently, but concerned individuals and groups still question continued harvest of this species throughout most of its range. We analyzed the results of a harvest management experiment using an approach that simultaneously evaluates density-dependence in population growth rates while assessing the effects of harvest and evaluating the probability of various levels of harvest reducing the population below a minimum value. Applying this approach to 19 populations of greater sage-grouse subjected to various rates of harvest provides highly significant evidence for inverse density-dependence in growth rates and insightful conclusions concerning the sustainability of harvest and its potential impact on long-term viability of these populations in North America. |
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