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Filtering by: Creator Meinke, Amanda M. Remove constraint Creator: Meinke, Amanda M. Degree Field Wildlife Science Remove constraint Degree Field: Wildlife Science

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  • Spatio-temporal Patterns and Ecological Drivers of Harbor Porpoise (Phocoena phocoena) off the Central Oregon Coast, USA

    Creator:
    Holdman, Amanda
    Abstract:
    The marine environment is under increasing pressure from human activities worldwide, particularly in coastal waters, creating a need to better understand fine-scale distributions of highly mobile species that occur in the area, as they are frequently most threatened. Harbor porpoise (Phocoena phocoena) occur frequently in Oregon’s nearshore habitat, but due...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Amanda Holdman for the degree

  • Top-down Influences of bald eagles on common murre populations in Oregon

    Creator:
    Horton, Cheryl A.
    Abstract:
    Populations of organisms are influenced by both top-down (predator driven) and bottom-up (environment or resource driven) effects. Seabird research has largely focused on bottom-up factors influencing reproduction, with little emphasis on top-down. Our goal was to better understand top-down impacts on colonial nesting seabirds over a range of spatio-temporal scales....
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Katie M. Dugger Robert M. Suryan Populations of organisms are influenced by both

  • The Influence of Wildfire and Invasive Vegetation on Mule Deer

    Creator:
    Schuyler, Elizabeth
    Abstract:
    The western United States has experienced large-scale degradation due to land use and land cover changes, invasion of annual grasses, and expansion of woody plants into grass and shrublands and the resultant altered fire regimes. These landscape-scale changes have coincided with declining mule deer (Odocoileus hemionus) populations, making habitat loss...
    Resource Type:
    Dissertation
    Full Text:
    : ____________________________________________________ Dana M. Sanchez Lisa M. Ellsworth The western United States has experienced

  • Using Satellite Imagery to Count Nesting Albatross from Space

    Creator:
    Dolliver, Jane E.
    Abstract:
    One fundamental concern in conservation biology is species abundance. For many taxa, however, these data are costly to obtain via direct observation and thus limited in geographic or temporal scope. Very high-resolution satellite imagery provides a means to address these limitations and provide remotely-sensed counts of large, colonial species. We...
    Resource Type:
    Masters Thesis
    Full Text:
    biologists – Stephanie Loredo, Jess Porquez, and Amanda Gladics – and a set of top-notch undergraduates and

  • 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:
    Oregon. Abstract approved: ______________________________________________________ Katie M. Dugger

  • Long-term Fuel Succession in the Sagebrush-steppe

    Creator:
    Reis, Schyler Ainsworth
    Abstract:
    Historically fire has been the primary disturbance factor in the sagebrush-steppe. The settlement of the West by Euro-Americans, grazing by domestic livestock, and the concomitant spread of invasive species have altered the historical fire regime. Understanding the long-term vegetation structure and fuel succession of the various sagebrush-dominated communities of this...
    Resource Type:
    Masters Thesis
    Full Text:
    advisors J. Boone Kauffman and Lisa M. Ellsworth. Their combined interest in my success has been

  • Greater Sage-Grouse (Centrocercus urophasianus) Demographic Rates and Predator Communities in a Degraded Landscape in Modoc County, California

    Creator:
    Sink, Chelsea E.
    Abstract:
    The greater sage-grouse (Centrocercus urophasianus: hereafter; sage-grouse) population in Modoc County California is geographically isolated and has been subsidized by translocation to prevent inbreeding depression since 2005. Despite significant efforts to increase the population through translocations and habitat improvement by cutting encroaching western juniper (Juniperus occidentalis), only a single lek...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Katie M. Dugger Christian A

  • Relationship between plant and butterfly community composition on upland prairies of the Willamette Valley, Oregon

    Creator:
    York, Melissa M.
    Abstract:
    Small remnants of 'natural' habitats exist today throughout much of the world. Upland prairies in the Willamette Valley, Oregon have been nearly eliminated by conversion to agriculture and other uses. As a result, very few prairies remain and at least four butterfly species that require this habitat appear to be...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Melissa M. York for the degree of

  • Thermal Ecology and Population Dynamics of Female Greater Sage-Grouse Following Wildfire in the Trout Creek Mountains of Oregon and Nevada

    Creator:
    Anthony, Christopher R.
    Abstract:
    The greater sage-grouse (Centrocercus urophasianus; hereafter, sage-grouse) is a ground nesting gallinaceous bird that requires large contiguous patches of sagebrush. Sage-grouse populations have declined, especially in the Great Basin where changes in wildfire regimes and the invasion of annual grasses have contributed to habitat loss and fragmentation. During the last...
    Resource Type:
    Dissertation
    Full Text:
    –1144. Wisdom, M. J., C. W. Meinke, S. T. Knick, and M. A. Schroeder. 2011. Factors associated with

  • Resource Selection, and Demographic Rates of Female Greater Sage-Grouse Following Large-Scale Wildfire

    Creator:
    Foster, Lee
    Abstract:
    Understanding the effects of habitat disturbance on a species' habitat selection patterns, and demographic rates, is essential to projecting the trajectories of populations affected by disturbance, as well as for determining the appropriate conservation actions needed to maintain those populations. Greater sage-grouse (Centrocercus urophasianus) is a species of conservation concern...
    Resource Type:
    Masters Thesis
    Full Text:
    Following Large-Scale Wildfire Abstract Approved: Katie. M. Dugger, Christian A. Hagen