Cooperative Research Units
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FS: Cutthroat Population Conditions within the Logan Watershed

Duration

July 2012 - June 2017

Narrative

Most subspecies of cutthroat trout Oncorhynchus clarkii are imperiled or extinct due to the

combined effects of habitat degradation and interactions with exotic species. To quantify abundance and vital

rates and evaluate trends, we selected a large population of Bonneville cutthroat trout O. clarkii utah from the

Logan River of northern Utah, a river characterized by high-quality and connected habitat. Over a 15-year

period, we have been continuing a comprehensive population assessment, including depletion-based abundance

estimates and a mark–recapture study (2,000 tagged fish) of site fidelity, growth, and survival. Our results provide important

conservation and recovery benchmarks for identifying rangewide limiting factors of cutthroat trout.

 

Current Staff

Federal Staff: 100

Masters Students: 236

Phd Students: 155

Post Docs: 57

University Staff: 246

5 Year Summary

Students graduated: 712

Scientific Publications: 1967

Presentations: 4391

 

Personnel

Funding Agencies

  • USDA Forest Service

Links

Cooperative Research Units Program Headquarters Cooperators

  1. U.S. Geological Survey