Index Catalog // ScholarsArchive@OSU

Factors affecting coho salmon production in Oregon

Creator:: Scarnecchia, Dennis Leslie
Abstract:: Eight scale characters of known hatchery and wild coho salmon (Oncorhynchus kisutch) were compared, and a linear discriminant function was used to determine if hatchery and wild adult coho salmon could be correctly identified by their scales. Eighty-two percent of the hatchery and 89% of the wild fish were correctly...
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for Privacy I4 4rry H. Wagner Eight scale characters of known hatchery and wild coho

The parr-smolt metamorphosis in steelhead trout as affected by photoperiod and temperature

Creator:: Wagner, Harry Henry
Abstract:: See pdf.
Resource Type:: Dissertation
Full Text:: Affected by Photoperiod and Temperature by Harry Henry Wagner A THESIS submitted to Oregon State

Bird community responses to cattle stocking rates in a Pacific Northwest bunchgrass prairie

Creator:: Johnson, Tracey N., Kennedy, Patricia L., DelCurto, Tim, and Taylor, Robert V.
Abstract:: In 2006–2010, effects of four different cattle stocking rates (0, 14.4, 28.8, and 43.2 animal unit months) were compared, representing 0%, 20%, 32%, and 46% utilization of vegetation by domestic livestock, on vegetation structure (as indexed by visual obstruction), and songbird population and apparent nest density, community composition, and diversity...
Resource Type:: Article
Full Text:: , Tim DelCurto b , and 6 Robert V. Taylor c 7 8 9 a Department of Fisheries and Wildlife

Trends in Caspian Tern Nesting and Diet in San Francisco Bay: Conservation Implications for Terns and Salmonids

Creator:: Collis, Ken, Roby, Daniel D., Larson, Keith W., Adrean, Lindsay J., Nelson, S. Kim, Evans, Allen F., Hostetter, Nathan, Battaglia, Dan, Lyons, Donald E., Marcella, Tim, and Patterson, Allison
Abstract:: Colony size, nesting ecology and diet of Caspian Terns (Hydroprogne caspia) were investigated in the San Francisco Bay area (SFBA) during 2003-2009 to assess the potential for conservation of the tern breeding population and possible negative effects of predation on survival of juvenile salmonids (Oncorhynchus spp.). Numbers of breeding Caspian...
Resource Type:: Article
Full Text:: , TIM MARCELLA3 AND ALLISON PATTERSON3 1Real Time Research, Inc., 52 S.W. Roosevelt Ave, Bend, OR

Top-down Influences of bald eagles on common murre populations in Oregon

Creator:: Horton, Cheryl A.
Abstract:: Populations of organisms are influenced by both top-down (predator driven) and bottom-up (environment or resource driven) effects. Seabird research has largely focused on bottom-up factors influencing reproduction, with little emphasis on top-down. Our goal was to better understand top-down impacts on colonial nesting seabirds over a range of spatio-temporal scales....
Resource Type:: Masters Thesis
Full Text:: in Oregon AN ABSTRACT OF THE THESIS OF Cheryl A. Horton for the degree of Master

Survival, movements and habitat selection of pygmy rabbits (Brachylagus idahoensis) on the Great Basin of southeastern Oregon and northwestern Nevada

Creator:: Crawford, Justin A.
Abstract:: I investigated survival, movements, home range sizes, and habitat selection of pygmy rabbits (Brachylagus idahoensis) in southeastern Oregon and northwestern Nevada from June 2005 to June 2007. I trapped 298 rabbits on four sites and fitted each with radio transmitters. More than 13,000 locations of telemetered rabbits were recorded. I...
Resource Type:: Masters Thesis
Full Text:: Justin A. Crawford for the degree of Master of Science in Wildlife Science presented on June 4, 2008

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:: AN ABSTRACT OF THE DISSERTATION OF Christina A

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Creator:: Viste-Sparkman, Karen
Abstract:: Habitat loss causes a reduction in available resources for wildlife, alters the configuration of remaining habitat, and may isolate wildlife populations. White-breasted nuthatches (Sitta carolinensis) are experiencing long-term population declines in the Willamette Valley of Oregon, where they are historically associated with oak woodlands. As secondary cavity-nesters, white-breasted nuthatches may...
Resource Type:: Masters Thesis
Full Text:: , and at heights greater than 6 m (Wagner 1981). Nuthatches in Oregon consume a variety of

Riverscape genetics of Oncorhynchus tshawytscha (Chinook salmon) in Siletz River, OR

Creator:: Davis, Chanté D.
Abstract:: Traditional analysis in population genetics evaluates differences among groups of individuals and, in some cases, considers the effects of distance or potential barriers to gene flow. However, many forces may shape genetic variation of organisms in riverine systems. Similarly complex research linking habitat heterogeneity and configuration to genetic structure has...
Resource Type:: Dissertation
Full Text:: ., Cushman, S.A., Waits, L.P., Coulon, A., Arntzen, J.W.H., R., and Wagner, H.H. (2009). Identify future

An investigation into the genetic basis of migration timing in Chinook salmon (Oncorhynchus tshawytscha)

Creator:: O'Malley, Kathleen G.
Abstract:: The genetic basis of adaptation is complex as many fitness-related traits are quantitative and likely influenced by multiple genes with variable effects across different selective environments. One important adaptation for anadromous Chinook salmon (Oncorhynchus tshawytscha) is the time at which individuals return to natal breeding sites within a reproductive season....
Resource Type:: Dissertation
Full Text:: tshawytscha) Abstract approved: Michael A. Banks The genetic basis of adaptation is

ScholarsArchive@OSU

Factors affecting coho salmon production in Oregon

The parr-smolt metamorphosis in steelhead trout as affected by photoperiod and temperature

Bird community responses to cattle stocking rates in a Pacific Northwest bunchgrass prairie

Trends in Caspian Tern Nesting and Diet in San Francisco Bay: Conservation Implications for Terns and Salmonids

Top-down Influences of bald eagles on common murre populations in Oregon

Survival, movements and habitat selection of pygmy rabbits (Brachylagus idahoensis) on the Great Basin of southeastern Oregon and northwestern Nevada

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

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Riverscape genetics of Oncorhynchus tshawytscha (Chinook salmon) in Siletz River, OR

An investigation into the genetic basis of migration timing in Chinook salmon (Oncorhynchus tshawytscha)

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