Index Catalog // ScholarsArchive@OSU

Planktivorous Auklets (Aethia pusilla and A. cristatella) nesting on St. Lawrence Island, Alaska as indicators of marine conditions in the northern Bering Sea

Creator:: Gall, Adrian
Abstract:: Monitoring reproductive success, prey species composition, and colony size of marine birds has been proposed as a method of assessing changes in marine systems that are otherwise difficult to sample (Cairns 1987). I measured inter-annual and intra-seasonal variability in reproductive parameters, taxonomic composition of the diet, and adult body condition...
Resource Type:: Masters Thesis
Full Text:: cristatella and A. Dusilla) Nesting on St. Lawrence Island. Alaska as Indicators of Marine Conditions in the

Mechanisms affecting the bioaccumulation of dietary quinoline by rainbow trout (Salmo gairdneri)

Creator:: Dauble, Dennis D.
Abstract:: Factors that influenced the uptake, storage, and elimination of dietary quinoline by rainbow trout (Salmo gairdneri) were studied to obtain an understanding of the mechanisms affecting the bioaccumulation of dietary contaminants in teleosts. Rainbow trout readily absorbed ¹⁴C-quinoline from pelleted food (1% ration at 138 ug quinoline/g food) and most...
Resource Type:: Dissertation
Full Text:: Lawrence R. Curtis Factors that influenced the uptake, storage, and elimination of dietary quinoline by

Ecological Effects of Reservoir Water Level Management and Implications for Juvenile Chinook Salmon

Creator:: Murphy, Christina A.
Abstract:: Large dams and their respective reservoirs can provide renewable energy and water security, but also profoundly alter riverine ecosystems. In the Pacific Northwest, dams and reservoirs cause discontinuities in river networks that have been particularly problematic for anadromous fishes. As barriers to the upstream and downstream migration of anadromous fishes,...
Resource Type:: Dissertation
Full Text:: . Johnson Large dams and their respective reservoirs can provide renewable energy and water

Direct and indirect effects of livestock grazing intensity on processes regulating grassland bird populations

Creator:: Johnson, Tracey N.
Abstract:: In grasslands, grazing by large ungulates can influence vegetation structure, composition, primary productivity, and ultimately, ecosystem functioning. While grazing represents a complex disturbance, grazing intensity largely determines the effects of grazing on vegetation. Structural and compositional changes in the plant community caused by grazing could have bottom-up effects on species...
Resource Type:: Dissertation
Full Text:: Tracey N. Johnson for the degree of Doctor of Philosophy in Wildlife Science presented on September 14

Changes in the swimming performance, behavior and physiology of juvenile chinook salmon (Oncorhynchus tshawytcha) after exposure to one, two or three acute handling stresses

Creator:: Sigismondi, Linda A.
Abstract:: The performance of an organism or organismic subsystem is the result of the interaction between the performance capacity of the system and Its environment. Environmental conditions can stress an organism and thus affect it's performance. In this study, three whole organism performances were examined: critical swimming speed, fatigue time and...
Resource Type:: Dissertation
Full Text:: my major professor, Dr. Lavern J. Weber, and my committee members, Dr. Lawrence Curtis, Dr. Austin

Piscivorous colonial waterbirds in the Columbia River estuary : demography, dietary contaminants, and management

Creator:: Suzuki, Yasuko
Abstract:: Caspian terns (Hydroprogne caspia) and double-crested cormorants (Phalacrocorax auritus) nest in large colonies on East Sand Island in the Columbia River estuary, the largest known colonies for the two species in the world. Both species of piscivorous colonial waterbirds have been identified as predators with a significant impact on the...
Resource Type:: Dissertation
Full Text:: wildlife populations in the estuary (Buck et al. 2005, Johnson et al. 2007); however, information on

Interrenal and metabolic responses to stress and their modifying factors in juvenile salmonid fishes

Creator:: Barton, Bruce Alexander
Abstract:: Genetic, ontogenetic, and environmental factors modified characteristic interrenal and glycemic responses to stress in juvenile salmonid fishes. During continuous confinement stress, plasma cortisol rose more quickly in chinook salmon, Oncorhynchus tshawytscha, acclimated to high rather than medium or low temperatures; hyperglycemia following either acute or chronic stress was also highest...
Resource Type:: Dissertation
Full Text:: academic program. I also thank my graduate committee: Lawrence R. Curtis and Lavern J. Weber, Department

Structural Variations of Headwater Stream Food Webs Along Geophysical Gradients at the HJ Andrews Experimental Forest

Creator:: Zatkos, Lauren E.
Abstract:: The structure of food webs and how they relate to community stability has been an important debate in ecology. Specifically, predictability of web shape and how it influenced by surrounding landscapes is one of the main goals of such discussions. Headwater streams provide a study template that is of interest...
Resource Type:: Masters Thesis
Full Text:: . Committee members at OSU included Sherri Johnson, Rebecca Hutchinson, and Katherine McLaughlin, and their

Final report : environmental stresses and skeletal deformities in fish from the Willamette River, Oregon, USA

Creator:: Villeneuve, Daniel L., Curtis, Lawrence R., Jenkins, Jeffrey J., Warner, Kara E., Tilton, Fred A., Kent, Michael L., Watral, Virginia G., Cunningham, Michael E., Markle, Douglas F., Sethajintanin, Doolalai, Krissanakriangkrai, Oraphin, Johnson, Eugene R., Grove, Robert Allan, Anderson, Kim A., Oregon State University. Department of Microbiology, Oregon State University. Department of Environmental and Molecular Toxicology, Oregon State University. Department of Fisheries and Wildlife, and Institute for Natural Resources
Abstract:: The Willamette River, one of only 14 American Heritage Rivers, flows through the most densely populated and agriculturally productive region of Oregon. Previous biological monitoring of Willamette River fish detected elevated frequencies of skeletal deformities in fish from certain areas of the lower (NP [NP], rivermile [RM] 26-55) and middle...
Resource Type:: Technical Report
Full Text:: , USA By Daniel L. Villeneuve†¥, Lawrence R. Curtis†, Jeffrey J. Jenkins†, Kara E. Warner†, Fred

California condors in the Pacific Northwest : integrating history, molecular ecology, and spatial modeling for reintroduction planning

Creator:: D'Elia, Jesse
Abstract:: Reintroduction programs are increasingly being used to save animals from extinction and aid in their recovery. The California Condor (Gymnogyps californianus), one of the most endangered birds in the world, is a remarkable example of how reintroduction programs can help rapidly increase a species' population numbers and range following a...
Resource Type:: Dissertation
Full Text:: . Thanks also the other members of my committee—Dr. Matthew Betts, Dr. Clint Epps, Dr. Matthew Johnson

ScholarsArchive@OSU

Planktivorous Auklets (Aethia pusilla and A. cristatella) nesting on St. Lawrence Island, Alaska as indicators of marine conditions in the northern Bering Sea

Mechanisms affecting the bioaccumulation of dietary quinoline by rainbow trout (Salmo gairdneri)

Ecological Effects of Reservoir Water Level Management and Implications for Juvenile Chinook Salmon

Direct and indirect effects of livestock grazing intensity on processes regulating grassland bird populations

Changes in the swimming performance, behavior and physiology of juvenile chinook salmon (Oncorhynchus tshawytcha) after exposure to one, two or three acute handling stresses

Piscivorous colonial waterbirds in the Columbia River estuary : demography, dietary contaminants, and management

Interrenal and metabolic responses to stress and their modifying factors in juvenile salmonid fishes

Structural Variations of Headwater Stream Food Webs Along Geophysical Gradients at the HJ Andrews Experimental Forest

Final report : environmental stresses and skeletal deformities in fish from the Willamette River, Oregon, USA

California condors in the Pacific Northwest : integrating history, molecular ecology, and spatial modeling for reintroduction planning

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