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Filtering by: Creator Bain%2C Scott A. Remove constraint Creator: Bain%2C Scott A. Location Willamette Valley, Oregon, United States, (Hypsographic) Remove constraint Location: Willamette Valley, Oregon, United States, (Hypsographic)

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  • Decomposition of Brassicaceae Residue in the Willamette Valley

    Creator:
    Berry, Pete A.
    Abstract:
    An important inoculum source of Leptosphaeria maculans and L. biglobosa (syn Plenodomus spp.), the pathogens that cause black leg in Brassicaceae crops, is infected plant residues. The general acceptance of conservation tillage in the Willamette Valley, Oregon, USA, has enabled a build-up in the amount of residue on or near...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Pete A

  • 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:
    . Abstract approved: __________________________________________________________________ Richard A

  • 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:
    Willamette Valley is dominated by a single plastid lineage which is subdivided into geographically

  • 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:
    inundation is a restoration goal, understanding the conditions under which those forests are submerged is

  • Choices for the future: The Willamette Valley

    Creator:
    The Willamette Valley Livability Forum
    Abstract:
    Prepared for by the Willamette Valley Livability Forum. May 1999.
    Resource Type:
    Technical Report
    Full Text:
    . This project is partially funded by a grant from the Transportation and Growth Management (TGM) Program

  • 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:
    in the Willamette Valley by Francine M. Havercroft A THESIS submitted to Oregon State University