Index Catalog // ScholarsArchive@OSU

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

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

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

Factors influencing spawning migration of bull trout (Salvelinus confluentus) in the North Fork Skokomish River, Olympic National Park, Washington

Creator:: Brenkman, Samuel J.
Abstract:: Distribution and life history characteristics of lacustrine-adfluvial bull trout (Salvelinus confluentus) were described in the North Fork Skokomish River Basin (including Lake Cushman, a reservoir) from 1994 to 1996. Day snorkeling was conducted in the river to determine initiation of the bull trout spawning migration, abundance of spawners, and duration...
Resource Type:: Masters Thesis
Full Text:: : Gary L. Larson Distribution and life history characteristics of lacustrine-adfluvial bull trout

The species composition, density, and distribution of the littoral zooplankton assemblage in Crater Lake, Oregon

Creator:: Warncke, William Madara
Abstract:: The species compositions and densities of the littoral and pelagic zooplankton assemblages in Crater Lake were compared. The littoral and pelagic zooplankton assemblages of most lakes are typically different due to different habitat conditions in the two zones. The littoral zone of Crater Lake lacks many of the habitat characteristics,...
Resource Type:: Masters Thesis
Full Text:: Lake, Oregon. Abstract approved: Gary L. Larson The species compositions and densities of the

Age, growth, and diet of fish in the Waldo Lake natural-cultural system

Creator:: Swets, Nicola L.
Abstract:: Waldo Lake, located in the Oregon Cascades, is considered to be one of the most dilute lakes in the world. Even with very low nutrient concentrations and sparse populations of zooplankton, introduced fish in the lake are large in size and in good condition when compared to fish from other...
Resource Type:: Masters Thesis
Full Text:: carbon concentrations to be less than 1 mg/l. In addition, both phytoplankton (Larson et al. 1991

A study of the commonalities and differences of the classroom environment in whole language and judicious discipline classrooms

Creator:: Larson, Colleen M.
Resource Type:: Dissertation
Full Text:: Colleen M. Larson for the degree of Doctor of Education in Education presented on October 15, 1992

Axial organ : its potential role in echnoid immunity

Creator:: Larson, Maureen Kupke
Abstract:: The echinoderm axial organ is located centrally, at the meeting point of the animals' "circulatory" systems. This, and its unusual histology, have prompted the implication of a number of different functions for the organ, including circulation, excretion and host defense. None of these have been definitively proven. Claims that starfish...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Maureen Kupke Larson for the degree of Master of Science in Zooloay

Paracellular/transcellular perturbations in hepatobiliary dysfuntion

Creator:: Gilroy, Duncan J.
Resource Type:: Dissertation
Full Text:: Hepatobiliary Dysfunction Redacted for Privacy Abstract approved: / Robert E. Larson Biliary excretion is an

ScholarsArchive@OSU

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

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

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

Factors influencing spawning migration of bull trout (Salvelinus confluentus) in the North Fork Skokomish River, Olympic National Park, Washington

The species composition, density, and distribution of the littoral zooplankton assemblage in Crater Lake, Oregon

Age, growth, and diet of fish in the Waldo Lake natural-cultural system

A study of the commonalities and differences of the classroom environment in whole language and judicious discipline classrooms

Axial organ : its potential role in echnoid immunity

Paracellular/transcellular perturbations in hepatobiliary dysfuntion

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