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Filtering by: Creator Clark, Katie A. Remove constraint Creator: Clark, Katie A. Committee Member Jones, Julia Remove constraint Committee Member: Jones, Julia

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  • Life History Trade-offs: The Effects of Habitat Selection on Columbian Black-tailed Deer Survival in Oregon

    Creator:
    Clark, Jessica S.
    Abstract:
    The assessment of habitat quality for wild populations requires evaluation of vital rates associated with the use of that habitat. Factors associated with bottom-up (forage) or top-down (predation) regulation and the relative contribution of these processes on ungulate populations are difficult to quantify, especially for a cryptic, but widely distributed...
    Resource Type:
    Masters Thesis
    Full Text:
    Deer Survival in Oregon by Jessica Clark A THESIS submitted to Oregon State University in

  • Carnivore Competition: Spatial and Dietary Implications of Gray Wolf Recolonization for Cougars in Northeast Oregon

    Creator:
    Orning, Elizabeth Kari
    Abstract:
    After a 40-year absence from Oregon’s landscape, expanding gray wolf (Canis lupus) populations are reestablishing elements of interspecific competition with sympatric large carnivores, like cougars (Puma concolor). This presents new challenges for management of large carnivores and their ungulate prey populations (e.g., elk, Cervus canadensis nelsoni; mule deer, Odocoileus hemionus)...
    Resource Type:
    Dissertation
    Full Text:
    will be forever grateful. CONTRIBUTION OF AUTHORS Dr. Katie M. Dugger and Dr. Darren A. Clark

  • Post-fire vegetation response to snow in the western United States

    Creator:
    Blauvelt, Katie
    Abstract:
    The western United States is experiencing significant changes in wildfire and snow regimes as a result of warming temperatures. An amplification of wildfire activity and reduction in snow water equivalent, snow covered area, and earlier spring snowmelt are documented trends that are projected to continue into the future. With an...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Katie Blauvelt for the degree of Master of Science in Geography

  • A method for remotely monitoring glaciers with regional application to the Pacific Northwest

    Creator:
    Medley, Brooke
    Abstract:
    An integrative method for monitoring glacier geometry change and mass balance is presented and applied to the Pacific Northwest, USA. Acting as a baseline for interpretation of future changes in glacier size and shape, we first derive a new inventory of regional glacier cover using remotely sensed data. To investigate...
    Resource Type:
    Masters Thesis
    Full Text:
    March 18, 2008. Title: A Method for Remotely Monitoring Glaciers with Regional Application to the

  • Forest Succession and Climate Change Effects on Long-Term Runoff Coefficients at Varying Timescales

    Creator:
    Crampe, Emily A.
    Abstract:
    Forest harvesting and climate change induced shifts in precipitation characteristics (i.e., intensity, type) may affect how water is partitioned on the landscape, with more water potentially being lost to evaporation or groundwater, and less water being partitioned into the stream. Long-term, paired watershed data allows us to assess these possible...
    Resource Type:
    Masters Thesis
    Full Text:
    THESIS OF Emily A. Crampe for the degree of Master of Science in Water Resources Science presented

  • Modeling Fine-scale Avian Distributions and Densities with Multi-scale Models: Predicting the Past and Present

    Creator:
    Hallman, Tyler A.
    Abstract:
    Models of a species’ distribution and models of a species’ spatially explicit density are valuable tools for conservation. They allow researchers to estimate changes in distributions, densities, and populations, based on changing environmental conditions. To trust such estimates, however, the quality of models is exceedingly important. Model performance can be...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ W. Douglas Robinson Models of a species’ distribution and models of a species

  • Fabrication of a flexible glucose sensing catheter for human implantation

    Creator:
    Matthews, David J.
    Abstract:
    Flexible electronics processing techniques were applied to integrate a glucose sensor with a hormone-delivery catheter in order to create a cheap and minimally invasive method for patients with type 1 diabetes to continually monitor and control their blood sugar levels. Ultimately, this work intends to move toward the development of...
    Resource Type:
    Masters Thesis
    Full Text:
    Fabrication of a Flexible Glucose Sensing Catheter for Human

  • Seeing the snow through the trees : towards a validated canopy adjustment for satellite fractional snow-covered area

    Creator:
    Coons, Lexi
    Abstract:
    Forest canopy cover presents a major challenge for remote sensing of fractional snow-covered area (ƒSCA). Snow cover is systematically underestimated where satellites sensors cannot penetrate the forest canopy. Current canopy adjustments scale observable ƒSCA with the vegetation fraction, assuming that snow cover distributions are similar between sub-canopy and open locations....
    Resource Type:
    Masters Thesis
    Full Text:
    Seeing the Snow through the Trees: Towards a Validated

  • Spatial Prediction for Finite Populations with Ecological Applications

    Creator:
    Higham, Matthew
    Abstract:
    Standard geostatistical models used in abundance prediction assume that observed counts on each site are made without error. However, in some wildlife populations, assuming perfect detection of animal or plant counts is unrealistic. We first construct an adjustment to a finite population block kriging (FPBK) estimator that allows the possibility...
    Resource Type:
    Dissertation
    Full Text:
    such a positive experience in graduate school. Thank you to Katie McLaughlin, Debashis Mondal, and

  • Population genetics of ranid frogs : investigating effective population size and gene flow

    Creator:
    Phillipsen, Ivan C.
    Abstract:
    This dissertation focuses on the evolutionary forces of genetic drift and gene flow in frog populations. The balance of these two forces and the force of mutation largely determine the amount of neutral genetic variation within populations as well as the degree of genetic similarity among populations. The stochastic evolutionary...
    Resource Type:
    Dissertation
    Full Text:
    ) parameter. The effective size of a population is the number of breeding individuals in a conceptual, ideal