Index Catalog // ScholarsArchive@OSU

Seasonal influences on food availability and diet of coastal cutthroat trout in relation to riparian vegetation

Creator:: Romero, Nicolas
Abstract:: Current riparian management objectives in the Pacific Northwest promote both retention of existing conifers and conversion of hardwood-dominated areas to conifers. Although understanding of relationships between riparian vegetation and salmonid prey availability is growing, temporal variation in these relationships is poorly understood. Seasonal fluxes in availability of aquatic and terrestrial...
Resource Type:: Masters Thesis
Full Text:: grateful to Sandy DeBano, my committee member, who came aboard near the end of the project and gave

Seasonal dynamics of a riparian food web in the Oregon Coast Range mountains

Creator:: Robillard, Amanda Lynn
Abstract:: Riparian areas are eco-tones where aquatically- and terrestrially-derived insect biomass is exchanged between habitats, presenting consumers with new sources of energy, and resulting in a reciprocal subsidy. The relative contribution of energy exchange and the resulting impacts on vertebrate riparian consumers, such as fish or birds, remains poorly understood. We...
Resource Type:: Masters Thesis
Full Text:: Moyer who helped me get my foot in the door. - Thanks to my committee members, Doug Robinson, Sandy

Silicic acid and oxidizable carbon movement in a Walla Walla silt loam as related to long-term residue and nitrogen applications

Creator:: Douglas, Clyde Lee
Abstract:: Intensive cultivation of Walla Walla silt loams (coarse silty, mixed, mesic, typic Haploxeroll) in eastern Oregon and Washington during the past 50 years, has decreased internal soil drainage in the 15 to 40 cm layer. However, no measurements have been made to determine the causes and corrective management for this...
Resource Type:: Dissertation
Full Text:: given to Dr. D. Moore (deceased), Dr. W. Slaubaugh (deceased), Dr. M. Harward, Dr. T. Moore, Dr. J

Characterizing the response of coralline algae to ocean acidification and nutrient changes in the California Current system

Creator:: Letzing, Sandy
Abstract:: Ocean acidification (OA) has emerged as an important focus of research and policy in this decade. Ocean acidification specifically refers to changes in the inorganic carbon system in the ocean resulting from its absorption of human-released CO₂ from the atmosphere. Anthropogenic atmospheric CO₂ levels are rapidly increasing; much of this...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Sandy

Extraction and plant availability of cadmium and zinc in a Willamette sandy loam soil

Creator:: Halvorson, Gary Alfred
Abstract:: A Willamette sandy shot loam was treated with ZnC1₂, CdC1₂, or sewage sludge to determine the chemical fate of added Cd and Zn in the soil and their influence on the growth of corn and wheat seedlings. Cadmium was added as CdC1₂ at rates of 0, 5, 20, or 80...
Resource Type:: Dissertation
Full Text:: Willamette sandy loam soil AN ABSTRACT OF THE THESIS OF Gary Alfred Halvorson in Soil Science Doctor of

The Impacts of Multiple Stressors on Aquatic Invertebrate Communities in the Umatilla River

Creator:: Clark, Hannah
Abstract:: Rivers impacted by human activities often have multiple stressors present. The effects of multiple stressors on biological communities can often be difficult to predict, due to the potential for complex interactions between stressors and communities. This thesis explores the impacts of two stressors often associated with agricultural land use, increased...
Resource Type:: Masters Thesis
Full Text:: student. I also thank my committee members Dr. Sandy DeBano, Dr. Tiffany Garcia, and Dr. David Lytle

Relationships between forest-floor invertebrate distribution, movement, and microclimate under alternative riparian management practices

Creator:: Rykken, Jessica J.
Abstract:: Headwater streams and their riparian zones are a common, yet poorly understood, component of Pacific Northwest landscapes. I sought to describe the ecological significance of headwater stream riparian zones as habitat for forest-floor invertebrate communities, and to assess how alternative management strategies for riparian zones may impact these communities. I...
Resource Type:: Dissertation
Full Text:: , Sandy DeBano, and Tom Chastain guided me through the process with sound advice, and helpful comments on

Water and solute transport : modeling and application to water conservation in layered soil

Creator:: Mohammed, Fareed H. A. N.
Abstract:: Sandy soils are among the least productive soils because of their inability to store adequate water for plant growth. Their high percolation rate not only allows water to move quickly beyond the root zone, but also washes nutrients below the reach of plant roots. High evaporation occurs from the soil...
Resource Type:: Dissertation
Full Text:: Abstract approved: Benno P. Warkentin Sandy soils are among the least productive soils because of their

Transport and transformations of nitrogen compounds in effluent from sand filter-septic system draintile fields

Creator:: Bushman, Jennifer L.
Abstract:: A total of 44 intermittent sand filter-septic systems, in five counties of Western Oregon, were sampled over a three-month period during the summer of 1995. The sand filter systems varied in age from 36 months up to 167 months (3 to 13.9 years). Liquid samples were taken from the septic...
Resource Type:: Masters Thesis
Full Text:: thank my major professor Dr. Jim Moore for his support and encouragement throughout my graduate

Estimating Lime Requirement for Oregon Soils with Non-Hazardous Soil Test Methods

Creator:: Makepeace, Carl A.
Abstract:: Various soil tests are routinely used in the United States to predict soil lime requirement. New non-hazardous methods have recently been proposed for adoption in Oregon, however the accuracy of these methods for Oregon soils has not been established. The objectives of this investigation were: (a) to document and describe...
Resource Type:: Masters Thesis
Full Text:: : _______________________________________ Amber D. Moore Various soil tests are routinely used in the United States to predict

ScholarsArchive@OSU

Seasonal influences on food availability and diet of coastal cutthroat trout in relation to riparian vegetation

Seasonal dynamics of a riparian food web in the Oregon Coast Range mountains

Silicic acid and oxidizable carbon movement in a Walla Walla silt loam as related to long-term residue and nitrogen applications

Characterizing the response of coralline algae to ocean acidification and nutrient changes in the California Current system

Extraction and plant availability of cadmium and zinc in a Willamette sandy loam soil

The Impacts of Multiple Stressors on Aquatic Invertebrate Communities in the Umatilla River

Relationships between forest-floor invertebrate distribution, movement, and microclimate under alternative riparian management practices

Water and solute transport : modeling and application to water conservation in layered soil

Transport and transformations of nitrogen compounds in effluent from sand filter-septic system draintile fields

Estimating Lime Requirement for Oregon Soils with Non-Hazardous Soil Test Methods

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