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Filtering by: Creator Smith, Celia M. Remove constraint Creator: Smith, Celia M. Location Willamette Valley, Oregon, United States, (Hypsographic) Remove constraint Location: Willamette Valley, Oregon, United States, (Hypsographic)

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  • White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

    Creator:
    Viste-Sparkman, Karen
    Abstract:
    Habitat loss causes a reduction in available resources for wildlife, alters the configuration of remaining habitat, and may isolate wildlife populations. White-breasted nuthatches (Sitta carolinensis) are experiencing long-term population declines in the Willamette Valley of Oregon, where they are historically associated with oak woodlands. As secondary cavity-nesters, white-breasted nuthatches may...
    Resource Type:
    Masters Thesis
    Full Text:
    measured at a 178-m radius (home range) scale, and landscape context was measured using vegetation cover

  • Subsistence variability in the Willamette Valley

    Creator:
    Havercroft, Francine M.
    Abstract:
    During the summer of 1981, Oregon State University archaeologically tested three prehistoric sites on the William L. Finley National Wildlife Refuge. Among the sites tested were typical Willamette Valley floodplain and adjacent upland sites. Most settlement-subsistence pattern models proposed for the Willamette Valley have been generated with data from the...
    Resource Type:
    Masters Thesis
    Full Text:
    ABSTRACT OF THE THESIS OF Francine M. Havercroft for the degree of Master of Arts in Interdisciplinary

  • Historical Change and the Hydrogeomorphic Context of Present-day Floodplain Forests in the Willamette Valley, Oregon

    Creator:
    Bervid, Heather D.
    Abstract:
    Floodplain forests play many important roles in the fluvial processes and environments of large alluvial rivers, including acting as geomorphological influences and habitat for native fish during high flows. Many large, gravel-bed river systems have undergone substantial change in recent centuries, resulting in loss of forested area to agriculture, reduction...
    Resource Type:
    Masters Thesis
    Full Text:
    indicate partial submergence of restoration forests by at least 1 m depth of restoration forests at both

  • Landscape Genomics and Climatic Responses of Willamette Valley Alders

    Creator:
    Kral, George L.
    Abstract:
    The climate of the Pacific Northwest is in flux, and existing forest ecosystems are stressed and poised to shift in fundamental ways, with or without human intervention. This dissertation probes the nature of forest responses to environmental change through investigations of morphology and genetics of three species of alder co-occurring...
    Resource Type:
    Dissertation
    Full Text:
    sample. Columns are mass-to-charge ratio (m/z