Bull trout population assessment in northeastern Oregon: a template for recovery planning Annual Progress Report for 2004

Within the overall framework of conservation and recovery planning for threatened

bull trout, this project provides critical information on abundance, trend, vital rates,

habitat needs, and information on the potential for improving survival at one or more

life stages. In addition, the project gathers information related to population structure structure
Something temporarily or permanently constructed, built, or placed; and constructed of natural or manufactured parts including, but not limited to, a building, shed, cabin, porch, bridge, walkway, stair steps, sign, landing, platform, dock, rack, fence, telecommunication device, antennae, fish cleaning table, satellite dish/mount, or well head.

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(age, life history, and genetic components). We provide a template against which

different strategies for monitoring and evaluation can be evaluated in terms of

accuracy, precision, and cost/effort. The data and conservation assessment tools

provided by this project will ultimately help guide the US Fish and Wildlife Service in

determining the necessary courses of action and management actions for recovery of

bull trout populations throughout this as well as other provinces. The project was

initiated in 2002 and has continued through 2004, with plans to continue work

through 2005. To meet our goals, we have developed and implemented each year, a

comprehensive mark-recapture program including two tag types, multiple capture

techniques (both passive and active) and systematic sampling of two large study

areas (South Fork Walla Walla and North Fork Umatilla rivers) with a high degree of

effort. We also study habitat needs of bull trout within a hierarchical arrangement of

spatial scales and are evaluating the environmental and biological cues for migration

as well as the potential for genetic distinction between life-history types.

Author(s)
Gary Thiede
Kris Homel
Phaedra Budy
Robert Al-Chokhachy
Publication date
Type of document
Report
Facility
Coho Salmon eggs incubating and hatching at Quilcene NFH in WA State.
The Columbia River Fish and Wildlife Conservation Office collaborates with local, state and Tribal partners to conserve, restore, and improve native fish and aquatic resources throughout Oregon and along the Columbia River. We study wild and hatchery aquatic organisms and their populations, support...
Program
A man is fishing in a boat with three young girls. The kids are excitedly pulling a fish out of the water.
Healthy fisheries and waters are the foundation of America’s outdoor traditions and give us the freedom to fish, boat, and enjoy the benefits of outdoor recreation. The Fish and Aquatic Conservation programs work with states, tribes, and communities to provide a comprehensive approach to freshwater...
Species
Bull trout and kokanee salmon underwater

Bull trout (Salvelinus confluentus) are members of the family Salmonidae and are char native Washington, Oregon, Idaho, Nevada, Montana and western Canada. Compared to other salmonids, bull trout have more specific habitat requirements that appear to influence their distribution and abundance....

FWS Focus
Ecosystem
FWS and DOI Region(s)