Annual Progress Report: Abundance and Demography of Dall Sheep in the Baird Mountains
Kleckner C, Adams LG, Shults B, Udevitz MS. 2001. Annual Progress Report: Abundance and Demography of Dall Sheep in the Baird Mountains. U.S Geological Survey. Alaska
Populations of northwestern Alaska Dall sheep (Ovis dalli dalli) declined in the early 1990s stemming from 2 severe winters. This resulted in the closures of hunting seasons in the region, but recently a limited subsistence hunting season has been restored. Little is known about patterns of productivity and survival of Dall sheep in the region. This study of Dall sheep in the Baird Mountains is being conducted to increase understanding of patterns of age-specific productivity, lamb survival, and adult survival as well as evaluate an array of methods for estimating population size from aerial surveys. Progress on the evaluation of aerial survey methods has been previously reported (Udevitz et al. 2001). This report presents progress on the demographic component of the study. It includes results of the initial sheep captures in March 2000 and radiotelemetry through November 2000,.
- Type
- Unpublished Report
- Authors
- Kleckner, Chris; Adams, Layne; Shults, Brad; Udevitz, Mark
- Date of Issue
- 2001-02-15
- Publisher
- U.S Geological Survey
- Units
- NOAT
- Keywords
- abundance, Alaska, Baird Mountains, Dall sheep, demography, Noatak, populations