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  • Range-wide abundance and fluctuating asymmetry patterns of sagebrush-obligate passerine birds

    Creator:
    Krissman, Cortnie M.
    Abstract:
    North American sagebrush (Artemisia spp.) ecosystems are suffering from reductions in habitat extent and quality. Only about 50% of sagebrush remains from pre-settlement conditions, and much of the remaining habitat is fragmented or degraded by invasive species, fire suppression and overgrazing. Sagebrush-obligate species are experiencing population declines as a result...
    Resource Type:
    Masters Thesis
    Full Text:
    -nonsense truths, and was always a delight to be around. Committee member, Laura Nagy, was a voice of

  • Direct and indirect effects of livestock grazing intensity on processes regulating grassland bird populations

    Creator:
    Johnson, Tracey N.
    Abstract:
    In grasslands, grazing by large ungulates can influence vegetation structure, composition, primary productivity, and ultimately, ecosystem functioning. While grazing represents a complex disturbance, grazing intensity largely determines the effects of grazing on vegetation. Structural and compositional changes in the plant community caused by grazing could have bottom-up effects on species...
    Resource Type:
    Dissertation
    Full Text:
    Pyke, and especially, Dr. Laura Nagy, who made significant contributions to the project overall and

  • A G-type Lectin Receptor-like Kinase Associated with Septoria Canker Resistance and Susceptibility Described using Multi-omics and Biotechnology

    Creator:
    Lenz, Ryan R.
    Abstract:
    Managers of forest and plantation ecosystems are encountering growing problems involving plant pathogens and the expanding geographic ranges of these pathogens. Historically unexposed stands are exceptionally vulnerable when a non-native pathogen is introduced because these pathogens can cause devastating disease in a host population that lacks co-evolved resistance mechanisms. One...
    Resource Type:
    Dissertation
    Full Text:
    presented on June 15, 2022. Title: A G-type Lectin Receptor-like Kinase Associated with Septoria Canker

  • Diversity and abundance of birds across a hardwood gradient in early seral Douglas-fir plantations

    Creator:
    Ellis, Tana M.
    Abstract:
    Recent evidence suggests that population declines of some avian species may be driven primarily by reduced quantity and diversity of early-successional habitat on the breeding grounds. Increasing intensity of forest management on private lands and decreased harvest rates on federal lands has resulted in a loss of the diverse early-successional...
    Resource Type:
    Masters Thesis
    Full Text:
    Plantations. Abstract approved: ___________________________________________ Matthew G. Betts Recent

  • Rework Practices in the Dairy Industry and Their Potential Contribution to Microbial Spoilage

    Creator:
    Rush, Casey E.
    Abstract:
    Rework is a common practice in the dairy industry as a way for processors to minimize waste while recovering costs for dairy products that are unsaleable. The regulations available for reworking fluid dairy products only outline product eligibility requirements with a focus on repasteurization of the products containing rework as...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: ______________________________________________________ Joy G. Waite-Cusic Rework

  • Relative abundance and habitat associations of small mammals in two forest types in southern Oregon

    Creator:
    Johnston, Aaron N.
    Abstract:
    I studied small-mammal communities and their response to grazing in mixed-conifer forests and oak woodlands in the Cascade-Siskiyou National Monument in southern Oregon. My objectives were to (1) compare small-mammal communities among forest types and grazing intensities, (2) identify riparian affiliated species, and (3) describe microhabitat associations. Over two years,...
    Resource Type:
    Masters Thesis
    Full Text:
    Robert G. Anthony I studied small-mammal communities and their response to grazing in mixed- conifer

  • Probabilistic models for quality control in environmental sensor networks

    Creator:
    Dereszynski, Ethan W.
    Abstract:
    Networks of distributed, remote sensors are providing ecological scientists with a view of our environment that is unprecedented in detail. However, these networks are subject to harsh conditions, which lead to malfunctions in individual sensors and failures in network communications. This behavior manifests as corrupt or missing measurements in the...
    Resource Type:
    Dissertation
    Full Text:
    : Probabilistic Models for Quality Control in Environmental Sensor Networks Abstract approved: Thomas G

  • Beyond free will: an empirical case for a capacity model of human agency

    Creator:
    Helzer, Erik G.
    Abstract:
    Although the question of free will has persisted throughout the history of philosophy as an important metaphysical consideration, rarely does the inquiry include empirical evidence from other disciplines concerned with human behavior. In this interdisciplinary paper, I combine the wisdom of psychologists, metaphysicians, and philosophers of science to comment on...
    Resource Type:
    Honors College Thesis
    Full Text:
    Erik G. Helzer for the degree of Honors Baccalaureate of Arts in Philosophy and Psychology presented on

  • The broad spectrum antiviral compound ST-669 affects vesicular trafficking in Chlamydia-infected cells

    Creator:
    Valiant, William G.
    Abstract:
    Our laboratory is exploring the mechanism of action of a novel broad spectrum antiviral, ST-669. This compound has activity against a variety of different viruses and the obligate intracellular bacterium, Chlamydia. In this study, we explored the effects of ST-669 when the cell cycle of the host cells was altered....
    Resource Type:
    Honors College Thesis
    Full Text:
    William G. Valiant A PROJECT submitted to Oregon State University University

  • Intravenous regional limb perfusion with tiludronate in horses

    Creator:
    Hunter, Barbara, G.
    Abstract:
    Intravenous regional limb perfusion (IVRLP) with tiludronate is a commonly used treatment for distal limb orthopedic disease in horses, but doses and protocols are anecdotal. IVRLP exposes articular cartilage within the perfused area to tiludronate, raising concerns about safety of this treatment, as high tiludronate concentrations (≥19mg/L) were harmful for...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Barbara G. Hunter for the