Index Catalog // ScholarsArchive@OSU

Redd site selection and spawning habitat use by fall chinook salmon

Creator:: Geist, David R.
Abstract:: The spawning habitat associated with fall chinook salmon (Oncorhynchus tshawytscha) redd clusters was investigated in the Hanford Reach of the Columbia River. A conceptual spawning habitat model is proposed that describes how geomorphic features of river channels create hydraulic processes, including hyporheic flows, that influence where salmon spawn in unconstrained...
Resource Type:: Dissertation
Full Text:: salmon AN ABSTRACT OF THE THESIS OF David R. Geist for the degree ofDoctor of Philosophy in Fisheries

Effects of Current Hatchery Practices on Salmon Odor Recognition and Responses

Creator:: Lemanski, Joseph R.
Abstract:: Salmon hatcheries have been utilized throughout the Pacific Northwest for many decades to mitigate losses, supplement natural spawning populations, and to provide tribal, sport and commercial fishing opportunities. Currently, there is substantial debate on their efficacy and the potential threats hatchery-reared salmonids pose to natural populations. These concerns have lead...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Joseph R. Lemanski for the degree of Master of Science in Fisheries Science

Evaluating the data-poor fishery stock assessment method, DB-SRA

Creator:: Owashi, Brandon R.
Abstract:: Depletion-Based Stock Reduction Analysis (DB-SRA; Dick and MacCall, 2011) is a catch-only fisheries stock assessment model that has been developed to estimate an overfishing limit (OFL) in data-poor situations. DB-SRA projects the biomass trajectories of a stock by means of a catch time series and five parameters: the instantaneous, per...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Brandon R. Owashi for

Time and energy budgets of a population of dippers (Cinclus mexicanus) during winter in the Cascade Range of Oregon

Creator:: Parsons, David R.
Abstract:: A time and energy budget was constructed for a population of dippers (Cinclus Mexicanus) in the Cascade Range of Oregon during winter. A total of 12,202 point observations of activity were made from nine observation blinds from 19 November 1973 to 10 February 1974. Approximately 50 percent of all observations...
Resource Type:: Masters Thesis

Effects of sampling design, estimators, and variability on groundfish management in Oregon

Creator:: Crone, Paul R. Jr
Abstract:: Sampling error associated with estimates of species composition and age composition of commercial groundfish landings in Oregon from 1989 to 1991 is documented to evaluate the impact of variable landing data on fisheries management and monitoring programs. The statistical reliability and bias associated with two multistage sampling designs are investigated...
Resource Type:: Dissertation
Full Text:: groundfish management in Oregon AN ABSTRACT OF THE THESIS OF Paul R. Crone Jr. for the degree of Doctor of

Sandy beach surf zones : what is their role in the early life history of Chinook salmon (Oncorhynchus tshawytscha)?

Creator:: Marin Jarrin, Jose R.
Abstract:: Early life stages of many marine and diadromous fish species use sandy beach surf zones, which occur along >50% of the world's marine coastlines. This extensive habitat can provide juvenile fishes with an abundant supply of potential prey and the ability to hide from predators in its shallow turbid waters....
Resource Type:: Dissertation
Full Text:: history of Chinook salmon? AN ABSTRACT OF THE DISSERTATION OF Jose R. Marin Jarrin for the

Beyond the Benthos: The effects of stream restoration on habitat complexity and aquatic and riparian macroinvertebrate assemblages

Creator:: Lotz, Kelsey L.
Abstract:: Aquatic and riparian systems in the western United States have been highly modified by anthropogenic impacts since Euro-American settlement. Ecological restoration is a practice that has been widely conducted around the world to mitigate the degradation of these systems. The majority of stream restoration efforts have focused on improving in-stream...
Resource Type:: Masters Thesis
Full Text:: Assemblages. Abstract approved: _____________________________________________________ David E. Wooster

The Impacts of Multiple Stressors on Aquatic Invertebrate Communities in the Umatilla River

Creator:: Clark, Hannah
Abstract:: Rivers impacted by human activities often have multiple stressors present. The effects of multiple stressors on biological communities can often be difficult to predict, due to the potential for complex interactions between stressors and communities. This thesis explores the impacts of two stressors often associated with agricultural land use, increased...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ David E. Wooster

Fisherman versus management : perceptions and conflicts in the salmon fishery

Creator:: Mrakovcich, Karina Lorenz
Abstract:: Fishermen's and managers' perceptions of fishery issues are an important factor to consider when studying conflicts between the two groups. According to theories of conflict management, differences in perceptions may cause situations to be characterized by misunderstanding and mistrust, and may add to the difficulties in managing the conflict. A...
Resource Type:: Masters Thesis
Full Text:: : Perceptions and Conflicts in the Salmon Fishery. Abstract approve David Sampson Fishermen's and managers

Spatial and temporal characteristics of bottom-trawl fish assemblages of the continental shelf and upper slope of the Pacific Coast of the United States, 1977-1992

Creator:: Jay, Chadwick V.
Abstract:: Twenty-three bottom-trawl fish assemblages were identified from the relative biomass of 33 dominant species that occurred in the National Marine Fisheries Services' triennial trawl surveys over the continental shelf and upper slope off California, Oregon, and Washington from 1977 to 1992. The assemblages accounted for about 70% of the total...
Resource Type:: Dissertation
Full Text:: . Abstract approved: David Sampson Twenty-three bottom-trawl fish assemblages were identified from the

ScholarsArchive@OSU

Redd site selection and spawning habitat use by fall chinook salmon

Effects of Current Hatchery Practices on Salmon Odor Recognition and Responses

Evaluating the data-poor fishery stock assessment method, DB-SRA

Time and energy budgets of a population of dippers (Cinclus mexicanus) during winter in the Cascade Range of Oregon

Effects of sampling design, estimators, and variability on groundfish management in Oregon

Sandy beach surf zones : what is their role in the early life history of Chinook salmon (Oncorhynchus tshawytscha)?

Beyond the Benthos: The effects of stream restoration on habitat complexity and aquatic and riparian macroinvertebrate assemblages

The Impacts of Multiple Stressors on Aquatic Invertebrate Communities in the Umatilla River

Fisherman versus management : perceptions and conflicts in the salmon fishery

Spatial and temporal characteristics of bottom-trawl fish assemblages of the continental shelf and upper slope of the Pacific Coast of the United States, 1977-1992

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