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Filtering by: Creator Working Lands for Wildlife Advisor Schreck, Carl B. Committee Member Dunham, Jason B.

Linking Moral Obligations, Assumption-based Research, and Structured Decision Making to Inform Bull Trout Recovery

Creator:

Brignon, William R.

Abstract:

More than 1500 species of plants and animals in the United States are listed as threatened or endangered under the Endangered Species Act (ESA). The U.S. Departments of Interior and Commerce are required, under Section 4(f)(1) of the ESA, to develop recovery plans for ESA-listed species under the respective agency...

Resource Type:

Dissertation

Full Text:

, Washington, D.C. USFWS (U.S. Fish and Wildlife Service). 2015. Recovery plan for the coterminous United
Passage, migration behavior, and autoecology of adult Pacific lamprey at Winchester Dam and within the North Umpqua River Basin, Oregon, USA

Creator:

Lampman, Ralph Tatsuo

Abstract:

The extensive reduction in adult Pacific lamprey (Entosphenus tridentatus) counts at many hydroelectric dams in the northwestern USA signals a substantial decline in lamprey numbers across the entire region in the past 40 to 50 years. Among the many potential causes of this decline, obstruction of migration routes has likely...

Resource Type:

Masters Thesis

Full Text:

Ralph Tatsuo Lampman for the degree of Master of Science in Fisheries Science presented on November 22