Index Catalog // ScholarsArchive@OSU

Bull Trout (Salvelinus confluentus) population and habitat surveys in the McKenzie and Middle Fork Willamette Basins, 2000

Creator:: Taylor, Greg
Abstract:: Prior to 1978, Dolly Varden Salvelinus malma were classified into an anadromous and interior form. Cavender (1978) classified the interior form as a distinct species, Salvelinus confluentus, the bull trout. Bull trout are large char weighing up to 18 kg and growing to over one meter in length (Goetz 1989)....
Resource Type:: Technical Report
Full Text:: Habitat Surveys in the Middle Fork Willamette and McKenzie Basin November 2000 2000 Annual Report

Bull Trout (Salvelinus confluentus) Population and Habitat Survey in the McKenzie and Middle Fork Willamette Basins, 2001

Creator:: Taylor, Greg
Abstract:: Our study area includes the three McKenzie populations, and a reintroduced population in the Middle Fork Willamette and tributaries above Hills Creek Reservoir. We monitored bull trout populations in the McKenzie and Middle Fork Willamette basins using a combination of sampling techniques that include spawning surveys, juvenile trapping, electronic fish...
Resource Type:: Technical Report
Full Text:: Salvelinus confluentus Population and Habitat Surveys in the McKenzie and Middle Fork Willamette Basins, 2001

Relationships between relative abundance of resident bull trout (Salvelinus confluentus) and habitat characteristics in Central Idaho mountain streams

Creator:: Zurstadt, Caleb Frederick
Abstract:: Resident bull trout (Salvelinus confluentus) may be particularly vulnerable to human related disturbance, however very few studies have focused on resident bull trout populations. The abundance of bull trout is one measure of the strength and potential for persistence of a population. Habitat characteristics may influence resident bull trout abundance...
Resource Type:: Masters Thesis
Full Text:: Between Relative Abundance of Resident Bull Trout (Salvelinus confluentus) and Habitat Characteristics in

Factors influencing spawning migration of bull trout (Salvelinus confluentus) in the North Fork Skokomish River, Olympic National Park, Washington

Creator:: Brenkman, Samuel J.
Abstract:: Distribution and life history characteristics of lacustrine-adfluvial bull trout (Salvelinus confluentus) were described in the North Fork Skokomish River Basin (including Lake Cushman, a reservoir) from 1994 to 1996. Day snorkeling was conducted in the river to determine initiation of the bull trout spawning migration, abundance of spawners, and duration...
Resource Type:: Masters Thesis
Full Text:: Influencing Spawning Migration of Bull Trout (Salvelinus confluentus) in the North Fork Skokomish River

Effects of kokanee (Oncorhynchus nerka) redd superimposition on bull trout (Salvelinus confluentus) reproductive success in the Deschutes River Basin, Oregon.

Creator:: Weeber, Matthew A.
Abstract:: Oregon's only remaining non-reservoir population of adfluvial bull trout (Salvelinus confluentus) is found in Odell Lake, in the headwaters of the Deschutes River. The population size is unknown, but appears to be quite small. Limited spawning and rearing habitats, combined with the effects of introduced species and other anthropogenic changes...
Resource Type:: Masters Thesis
Full Text:: bull trout (Salvelinus confluentus) is found in Odell Lake, in the headwaters of the Deschutes

Feeding behavior and diet of native bull trout Salvelinus confluentus and introduced brook trout S. fontinalis in two Eastern Oregon streams

Creator:: Gunckel, Stephanie L.
Abstract:: One of the greatest threats to native bull trout Salvelinus confluentus populations is the presence of non-native brook trout S. fontinalis. This study, conducted in two second-order Eastern Oregon streams, investigates the effect of brook trout on the feeding behavior arid diet of bull trout. Feeding behavior, microhabitat use, and...
Resource Type:: Masters Thesis
Full Text:: sympatric bull trout and brook trout ( a) in a) Meadow Fork of Big Creek in the Malheur River Basin and b

Biological opinion on effects of issuance of license for McKenzie (Bigelow) Hydropower Project on Upper Willamette River chinook salmon, its proposed critical habitat, and bull trout

Creator:: U. S. Fish and Wildlife Service, Pacific Region and National Marine Fisheries Service, Northwest Region
Abstract:: On March 24, 1999, the National Marine Fisheries Service (NMFS) published its final decision to list the Upper Willamette River evolutionarily significant unit (ESU) of chinook salmon as threatened under the Endangered Species Act (ESA). The effective date for the final listing was May 24, 1999, and the ESU is...
Resource Type:: Technical Report
Full Text:: Basin. Reasons for the decline of bull trout in the Willamette Basin include habitat degradation

Distribution and habitat use of bull trout following the removal of nonnative brook trout

Creator:: Renner, Dirk
Abstract:: Invasion by nonnative brook trout (Salvelinus fontinalis) often results in replacement of bull trout (Salvelinus confluentus) in western North America, but the causal mechanisms are not well understood. Removal of brook trout from 1992 to 2000 from Sun Creek in southern Oregon, provided an opportunity to investigate the changes in...
Resource Type:: Masters Thesis
Full Text:: (Goetz 1989). In 1998, bull trout population segments in the Kiamath River and Columbia River basins

Summary report to assist development of ecosystem flow recommendations for the Coast Fork and Middle Fork of the Willamette River, Oregon

Creator:: Gregory, Stanley V., Ashkenas, Linda, and Nygaard, Chris
Abstract:: Introduction The Willamette River Flow Project The Nature Conservancy (TNC) and the U. S. Army Corps of Engineers (USACE) are collaborating on a project to determine environmental flow requirements for the Willamette River and its tributaries and to design and test alternative flow releases from the dams that can meet...
Resource Type:: Technical Report
Full Text:: control in the Willamette Basin. Figure 9. Observed flows at the Jasper Gage, Middle Fork Willamette

Life history variation and movement among three populations of redband trout (Oncorhynchus mykiss gairdneri) in the middle Deschutes Basin, Oregon

Creator:: Groves, Kristy L.
Abstract:: Redband trout (Oncorhynchus mykiss gairdneri) are found over a wide range of environmental conditions and are known for their variability in life history traits among watersheds or even within streams. Life history traits and population structure of these trout can be influenced by a variety of anthropogenic changes including habitat...
Resource Type:: Masters Thesis
Full Text:: snorkel surveys in Squaw Creek, 1998 and 1999. 32 2.6. Number of adult redband trout moving up the Opal

ScholarsArchive@OSU

Bull Trout (Salvelinus confluentus) population and habitat surveys in the McKenzie and Middle Fork Willamette Basins, 2000

Bull Trout (Salvelinus confluentus) Population and Habitat Survey in the McKenzie and Middle Fork Willamette Basins, 2001

Relationships between relative abundance of resident bull trout (Salvelinus confluentus) and habitat characteristics in Central Idaho mountain streams

Factors influencing spawning migration of bull trout (Salvelinus confluentus) in the North Fork Skokomish River, Olympic National Park, Washington

Effects of kokanee (Oncorhynchus nerka) redd superimposition on bull trout (Salvelinus confluentus) reproductive success in the Deschutes River Basin, Oregon.

Feeding behavior and diet of native bull trout Salvelinus confluentus and introduced brook trout S. fontinalis in two Eastern Oregon streams

Biological opinion on effects of issuance of license for McKenzie (Bigelow) Hydropower Project on Upper Willamette River chinook salmon, its proposed critical habitat, and bull trout

Distribution and habitat use of bull trout following the removal of nonnative brook trout

Summary report to assist development of ecosystem flow recommendations for the Coast Fork and Middle Fork of the Willamette River, Oregon

Life history variation and movement among three populations of redband trout (Oncorhynchus mykiss gairdneri) in the middle Deschutes Basin, Oregon

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Conference Name

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search