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Filtering by: Creator Pacific Northwest Cooperative Extension Remove constraint Creator: Pacific Northwest Cooperative Extension Advisor Anthony, Robert G. Remove constraint Advisor: Anthony, Robert G. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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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:
    challenges if climate in the Pacific Northwest follows the current predictions of year-round warming with

  • Ecology of Great Basin Canada goose broods in southcentral Washington

    Creator:
    Eberhardt, Lester E.
    Abstract:
    The ecology of female Great Basin Canada geese (Branta canadensis moffitti) and their broods was studied during the rearing seasons of 1983 and 1984 on the Columbia River in southcentral Washington. The movements and activities of 41 adult female geese, marked with radio-transmitters, and their broods were monitored. Adult female...
    Resource Type:
    Dissertation
    Full Text:
    ), the Pacific Northwest Laboratory (U.S. Department of Energy Contract DE-AC06-76RL0 1830), and the

  • Environmental contaminants and ecology of bald eagles in southcentral Oregon

    Creator:
    Frenzel, Richard Wilmarth
    Abstract:
    Food habits and levels of organochlorine compounds, lead, and mercury in resident and wintering bald eagles were studied in southcentral Oregon and California, 1979-83. Food habits were assessed by examination of castings from winter communal roosts, identification of 2938 prey items found at nest sites and foraging areas, and observations...
    Resource Type:
    Dissertation
    Full Text:
    Wildlife Service and conducted through the Oregon Cooperative Wildlife Research Unit with the U.S. Fish