Index Catalog // ScholarsArchive@OSU

Comparative seedling growth of diffuse knapweed and bluebunch wheatgrass under altered moisture and temperature regimes

Creator:: Grammon, Arnold A.
Abstract:: In many areas of the Western U.S., diffuse knapweed (Centaurea diffusa Lam.) has invaded into plant communities dominated by bluebunch wheatgrass (Pseudomegnaria spicata [Pursh] A. Love). The objectives of this study were to compare growth response of both species when grown under altered moisture and temperature regimes while in the...
Resource Type:: Masters Thesis
Full Text:: Temperature Regimes. Abstract approved: Larry L. Larson In many areas of the Western U.S diffuse

Cardaria draba (L.) Desv. in the sagebrush ecosystem of northeastern Oregon

Creator:: Smergut, Teresa A.
Abstract:: Ranchers and resource managers have become concerned about the role and spread of Cardaria draba (L.) Desv. (whitetop) in the sagebrush steppe of Northeastern Oregon. This area is an important natural resource for livestock production and big game winter range. An area near Keating, Oregon was selected to study the...
Resource Type:: Masters Thesis
Full Text:: understanding during the development of the thesis. Also special thanks is extended to Dr. Larry Larson for his

Life-history, growth and interference of cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea solstitialis L.)

Creator:: Sheley, Roger Leslie
Abstract:: Cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea soistitialis L.) have invaded over 3 million ha of grasslands in the western U.S. Future management will require an understanding of the conditions, mechanisms, and processes which control species dominance, community dynamics, and desirable plant establishment in these alien dominated annual rangelands....
Resource Type:: Dissertation

Cardiac output and respiratory measurements in the rainbow trout and their application to the study of blood and water flow limitations on chemical flux at the gill

Creator:: Schmieder, Patricia K. (Patricia Kathleen)
Abstract:: A method has been developed for the continuous automated monitoring of cardiac output in adult rainbow trout. Average cardiac output measured under control conditions and varied environmental conditions of hypoxia and post-hypoxia was significantly higher (P≤ 0.05) in male than female trout. The cardiac output of trout in spawning condition...
Resource Type:: Dissertation
Full Text:: friendship and support. Thanks also to my committee members, Dr. Robert Larson, Dr. Larry Curtis, and Dr

Consolidation, compression, and shear strength of four western Oregon forest soils

Creator:: McNabb, David H.
Abstract:: Forest soils with low bulk densities are often considered less susceptible to compaction than soils with higher bulk densities. The objective of this study was to determine if soil strength controlled the compression of soils with low bulk density. Four soils were selected for this evaluation. Three of these were...
Resource Type:: Dissertation
Full Text:: of Four Western Oregon Forest Soils Redacted for Privacy Abstract approved: Larry Boersma Forest

Modelling and analysis of geophysical turbulence : use of optimal transforms and basis sets

Creator:: Gamage, Nimal K. K.
Abstract:: The use of efficient basis functions to model and represent flows with internal sharp velocity gradients, such as shocks or eddy microfronts, are investigated. This is achieved by analysing artificial data, observed atmospheric turbulence data and by the use of a Burgers' equation based spectral model. The concept of an...
Resource Type:: Dissertation
Full Text:: Analysis of Geophysical Turbulence: Use of Optimal Transforms and Basis Sets. Abstract approved: Larry

Land use and nonpoint source phosphorus pollution in the Dairy-McKay hydrologic unit area of the Tualatin River Basin, Oregon

Creator:: Wolf, Donald W.
Abstract:: Human activities may contribute to the eutrophication of surface waters by providing nutrients to aquatic ecosystems. Phosphorus is frequently identified as a nutrient that is limiting to most aquatic ecosystems under natural conditions. Sources of phosphorus contributing to eutrophic conditions often include nonpoint sources that are dispersed across the landscape....
Resource Type:: Masters Thesis

Yellow starthistle : ecology and management on Pacific Northwest rangelands

Creator:: Oregon State University. Extension Service, Larson, Larry, Sheley, R., McInnis, M., and Kiemnec, Gary L.
Abstract:: Yellow starthistle (Centaurea solstitialis L.) is a member of the knapweed (Centaurea L.) complex. It is poor forage for all livestock and causes “chewing disease,” a nervous disorder, in horses. Yellow starthistle infests millions of acres in California and the Pacific Northwest. Infestations range from scattered plants to dense stands...
Resource Type:: Technical Report
Full Text:: tion in the fall. Larry Larson, professor of rangeland resources, Oregon State University; Roger

Focus on forestry ; vol. 4, no. 3 (Fall 1991)

Creator:: Oregon State University. College of Forestry
Abstract:: Keywords: Steve Strauss, Rick Strachan, Starker Forests, Wheeler Wood Composites Laboratory, Barbara Middleton, Joan Davies, Lisa Mattes, Larry Chapman, Iwan Ho, Jim WIlson, John Sessions, Brian Kramer, Mike Newton, Faye Stewart, Norma Erickson, Paul Adams, Gordan A. and Priscilla E. Duncan, Jim Trappe, Corey Arentz, Wang Zheng-Qi, Loran L. ("Stub")...
Resource Type:: Other
Full Text:: . Dressler Ray L. DuPuis Douglas G. Dunlap Kent H . Duysen Larry Duysen Dennis P. Dykstra J. Thomas

Northern goshawk habitat analysis in managed forest landscapes

Creator:: McGrath, Michael Thomas
Resource Type:: Masters Thesis
Full Text:: . Doug Johnson and Dr. Larry Irwin for their guidance and useful suggestions on my thesis draft. Dr

ScholarsArchive@OSU

Comparative seedling growth of diffuse knapweed and bluebunch wheatgrass under altered moisture and temperature regimes

Cardaria draba (L.) Desv. in the sagebrush ecosystem of northeastern Oregon

Life-history, growth and interference of cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea solstitialis L.)

Cardiac output and respiratory measurements in the rainbow trout and their application to the study of blood and water flow limitations on chemical flux at the gill

Consolidation, compression, and shear strength of four western Oregon forest soils

Modelling and analysis of geophysical turbulence : use of optimal transforms and basis sets

Land use and nonpoint source phosphorus pollution in the Dairy-McKay hydrologic unit area of the Tualatin River Basin, Oregon

Yellow starthistle : ecology and management on Pacific Northwest rangelands

Focus on forestry ; vol. 4, no. 3 (Fall 1991)

Northern goshawk habitat analysis in managed forest landscapes

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