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Long-term effects of tillage, nitrogen, and rainfall on winter wheat yields

Creator:: Camara, Kelli Marie
Abstract:: Winter wheat is commonly grown in dryland cropping systems in the Pacific Northwest region of semi-arid eastern Oregon. For agronomic, economic, and environmental reasons, it is important to understand the long-term sustainability of such dryland systems. The objective of this study was to evaluate the long-term effects of tillage, nitrogen...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Kelli Marie Camara for the degree

Some factors involved in the clarification of whey wine

Creator:: Larson, Peter Kebren
Abstract:: The development of whey beverages including whey wine has been an area of whey utilization research. One study to produce a commercially salable wine from sweet whey, particularly cheddar whey, was undertaken. It included developing a process to clarify the naturally cloudy wine, monitoring the physical and chemical changes which...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Peter Kebren Larson for the

The effects of L-ascorbic acid, thiamine HCl, or L-cysteine on ethanol and acetaldehyde blood levels and disposition

Creator:: Acholonu, Wilfred W.
Abstract:: The effects of L-ascorbic acid, thiamine HC1, or L-cysteine on acetaldehyde blood levels and disposition were investigated in acetaldehyde- treated rats. Rats were treated with ascorbic acid (2 mmoles/kg), thiamine (0.24 mmole/kg), or cysteine (2 mmoles/kg) one hour before the administration of acetaldehyde (6 mmoles/kg). The results show that each...
Resource Type:: Masters Thesis
Full Text:: The effects of L-ascorbic acid, thiamine HCl, or L

Influence of the secondary metabolites of Mentha piperita L. on Tetranychus urticae Koch

Creator:: Larson, Katherine Cole
Resource Type:: Masters Thesis
Full Text:: L. on Tetranychus urticae Koch AN ABSTRACT OF THE THESIS OF Katherine Cole Larson for the degree

Effects of chlorinated biologically stabilized kraft mill effluent on the mortality and growth of Coho salmon

Creator:: Steil, Deborah L.
Abstract:: Ninety-six hour acute toxicity bioassays were employed to determine the tolerance of juvenile coho salmon to chlorinated stabilized kraft mill effluent (SKME). In addition the effect of chlorinated SKME on the growth of juvenile coho salmon in six and ten day experiments was studied. Results of the acute toxicity tests...
Resource Type:: Masters Thesis
Full Text:: professor, Dr. Gary L. Larson, for his gñdance, encouragement and patience throughout this research. I

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

Benthic macroinvertebrates and sediment characteristics of a coastal dune margin lake (Carter Lake, Douglas County, Oregon)

Creator:: Wones, Andrew G.
Abstract:: Carter Lake, a freshwater, coastal dune-margin lake, was sampled at the beginning and end of the summer of 1986 to determine the sediment characteristics and benthic macroinvertebrate abundance, biomass, variety, and diversity. The distributions of major benthic habitats were estimated by snorkeling in June and July, 1986. Water temperature and...
Resource Type:: Masters Thesis
Full Text:: , Douglas County, Oregon ) Redacted for Privacy Abstract approved: d v Gary L. Larson Carter Lake, a

Responses to fertilization and fish stocking in the pelagic ecosystem of a naturally fishless lake

Creator:: Cameron, William A.
Abstract:: Ecologists have studied the responses of pelagic ecosystems to varying levels of nutrient loading and fish predation on many different scales ranging from small experimental enclosures to whole lake systems. There are recurring patterns of response to these two variables, which are generally predictable on the basis of biogeographic, behavioral,...
Resource Type:: Masters Thesis
Full Text:: Redacted for Privacy Gary L. Larson Ecologists have studied the responses of pelagic ecosystems to

Habitat segregation of two ambystomatids in mountain ponds, Mount Rainier National Park

Creator:: Brokes, Brendan J.
Abstract:: Ambystoma macrodactylum (long-toed salamander) and A. gracile (northwestern salamander) are two common salamander species occupying key trophic positions in mountain ponds of Mount Rainier National Park. The objective of this research was to document and evaluate the distributions and abundances of the two species, relative to habitat characteristics of ponds...
Resource Type:: Masters Thesis
Full Text:: like to thank Gary Larson for his encouragement and direction throughout the thesis process. He

Structure, abundance, and distribution of pelagic zooplankton in a deep, oligotrophic Caldera Lake

Creator:: Karnaugh, Elena N.
Abstract:: From July 1985 to April 1987 the pelagic zooplankton community of Crater Lake, Oregon was studied to determine taxonomic structure, absolute and relative densities, and spatial and temporal distributional patterns. Samples were collected using vertically-towed zooplankton nets. The community structure consisted of two cladoceran and nine rotifer species, which were...
Resource Type:: Masters Thesis
Full Text:: : Redacted for Privacy Gary L. Larson From July 1985 to April 1987 the pelagic zooplankton community of

ScholarsArchive@OSU

Long-term effects of tillage, nitrogen, and rainfall on winter wheat yields

Some factors involved in the clarification of whey wine

The effects of L-ascorbic acid, thiamine HCl, or L-cysteine on ethanol and acetaldehyde blood levels and disposition

Influence of the secondary metabolites of Mentha piperita L. on Tetranychus urticae Koch

Effects of chlorinated biologically stabilized kraft mill effluent on the mortality and growth of Coho salmon

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

Benthic macroinvertebrates and sediment characteristics of a coastal dune margin lake (Carter Lake, Douglas County, Oregon)

Responses to fertilization and fish stocking in the pelagic ecosystem of a naturally fishless lake

Habitat segregation of two ambystomatids in mountain ponds, Mount Rainier National Park

Structure, abundance, and distribution of pelagic zooplankton in a deep, oligotrophic Caldera Lake

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