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Filtering by: Alternative title ssim Circular of information no. 69 Advisor Schreck, Carl B. Creator Brignon, William R.

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:

1.00, which indicated little to no effects of captivity on a fish’s survival after release
Habitat selection of hatchery and wild juvenile salmonids in Eagle Creek Basin, Oregon

Creator:

Brignon, William R.

Abstract:

To best manage Eagle Creek National Fish Hatchery and minimize any negative impacts that the current hatchery program may be having on Endangered Species Act-listed salmonids in the Eagle Creek Basin, I determined if wild fish are being displaced from preferred habitats by hatchery salmonids Oncorhynchus spp. This thesis had...

Resource Type:

Masters Thesis

Full Text:

of wild resident O. mykiss during the summer (McMichael et al. 1997). The same study documented no