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Filtering by: Creator Wilson, Glenn Remove constraint Creator: Wilson, Glenn Degree Field Wildlife Science Remove constraint Degree Field: Wildlife Science

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  • Local weather, regional climate, and population dynamics of northern spotted owls in Washington and Oregon

    Creator:
    Glenn, Elizabeth M.
    Abstract:
    Since the early 1990s, declines in northern spotted owl (Strix occidentalis caurina) populations have been documented through extensive field surveys and range-wide demographic analyses. Although loss of late-successional forest has been credited as the primary cause for spotted owl population declines, environmental variation has also been shown to influence vital...
    Resource Type:
    Dissertation
    Full Text:
    . Glenn for the degree of Doctor of Philosophy in Wildlife Science presented on March 6, 2009. Title

  • Applications of radiotelemetry to studies of California quail in western Oregon

    Creator:
    Kilbride, Kevin M.
    Abstract:
    A partially automated radio-tracking system with semi-continuous azimuth data collection and XYLOG5 and MAP computer programs for azimuth data analysis was used for studies of California quail (Callipepla californica) at the E.E. Wilson Wildlife Area, Oregon, in 1988 and 1989. Movements of 58 hens were monitored daily to determine nest...
    Resource Type:
    Masters Thesis
    Full Text:
    (Callipepla californica) at the E.E. Wilson Wildlife Area, Oregon, in 1988 and 1989. Movements of 58 hens

  • Foraging ecology of barred owls where they are outcompeting the threatened northern spotted owl

    Creator:
    Baumbusch, Ryan C.
    Abstract:
    Following European-American colonization of North America and associated landscape changes, barred owls (Strix varia) underwent a dramatic expansion of their historical range. The barred owl expanded across the previously tree-less Great Plains that had limited their distribution, and into the forests along the west coast. In these western forests they...
    Resource Type:
    Dissertation
    Full Text:
    committee, Drs. Taal Levi, Bob Mason, Todd Wilson, and Klaus Puettmann for thoughtful input and

  • Passive acoustic monitoring of owls: two studies in forested landscapes of the Pacific Northwest

    Creator:
    Duchac, Leila S.
    Abstract:
    Nearly all birds communicate through sound, and there has been much study of avian populations and communities using song and other vocalizations. Owls are no exception as they defend territories, advertise for mates, and defend against threats using various vocalizations. However, due to their generally nocturnal habits, some owl species...
    Resource Type:
    Masters Thesis
    Full Text:
    , M. J. Clement, L. V. Diller, E. M. Glenn, A. Green, S. A. Gremel, D. R. Herter, J. M. Higley, J

  • Songbird Mobbing of Northern Pygmy-Owls: A Function of Risk Across Landscapes and Seasons

    Creator:
    Scott, Madeleine
    Abstract:
    The evolutionary arms race between predators and prey has led to a diverse set of interactions between species. Prey have developed an array of behaviors designed to reduce their risk of predation. Among those strategies, mobbing is a paradoxical behavior where prey actually approach predators, often in large multi-species flocks....
    Resource Type:
    Masters Thesis
    Full Text:
    ; Dutour et al., 2017; Sandoval and Wilson, 2012). Although the species composition and behavioral

  • Demography, home range, and habitat selection of northern spotted owls in the Ashland Watershed

    Creator:
    Schilling, Jason W.
    Abstract:
    Northern Spotted Owls (Strix occidentalis caurina) inhabit productive forests that historically supported frequent, large, variable-severity fires in the Klamath province of southwestern Oregon occur in complex. The potential for high-severity wildfire remains high throughout this region, so remaining spotted owl habitat is at risk. An adaptive management approach to fire...
    Resource Type:
    Masters Thesis
    Full Text:
    this project. I am indebted to my fellow graduate students Betsy Glenn, Darren Clark, Justin

  • Phylogeography and population structure of least terns (Sterna antillarum)

    Creator:
    Draheim, Hope M.
    Abstract:
    Historically, least terns (Sterna antillarum) were one of the most common tern species in North America. However, population declines have resulted from direct and indirect anthropogenic pressures on their breeding and foraging habitat. Three subspecies of least terns have been described within the United States: California least tern (S. a....
    Resource Type:
    Masters Thesis
    Full Text:
    County, Massachusetts; Accomack County, Virginia; Glenn County, Georgia; and San Diego County

  • Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon

    Creator:
    Wiens, J. David
    Abstract:
    The federally threatened northern spotted owl (Strix occidentalis caurina) is the focus of intensive conservation efforts that have led to much forested land being reserved as habitat for the owl and associated wildlife species throughout the Pacific Northwest of the United States. Recently, however, a relatively new threat to spotted...
    Resource Type:
    Dissertation
    Full Text:
    owls and apparent survival of spotted owls (Anthony et al. 2006, Glenn et al. 2011a, Forsman et al

  • 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:
    ., Augustine, A., Wilson, J., Ellsworth, L., 2006. Interactions of burn season and ecological condition on

  • Phylogeography and population genetic structure of double-crested cormorants (Phalacrocorax auritus)

    Creator:
    Mercer, Dacey M.
    Abstract:
    The Double-crested Cormorant (Phalacrocorax auritus) is a widespread, colonial, North American waterbird with bicoastal and inland distributions. Four subspecies have been described within North America corresponding to five geographic breeding regions: Interior and North Atlantic cormorants (P. a. auritus); Southeastern cormorants (P. a. floridanus); Alaskan cormorants (P. a. cincinnatus); and...
    Resource Type:
    Masters Thesis
    Full Text:
    discrete units (Wilson 1953). Further, conservation efforts have often been aimed at the subspecies level