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Filtering by: Creator Waltzek, Thomas B. Remove constraint Creator: Waltzek, Thomas B. Location Willamette Valley, Oregon, United States, (Hypsographic) Remove constraint Location: Willamette Valley, Oregon, United States, (Hypsographic)

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  • 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:
    derived; and Thomas Connolly, from the University of Oregon, for providing copies of his research papers

  • 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:
    . 2001, Thomas et al. 2002). Distance sampling is a method of estimating densities of objects of

  • 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:
    ..................................................................................................... 125 Appendix B. Residue Size Determinations by Image Analysis .................... 127

  • 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:
    ; b.) cpDNA with indels removed; and c) coded indels plus cpDNA

  • The Willamette Valley choices for the future

    Creator:
    Lawrence Halprin & Associates
    Abstract:
    This book is an environmental primer for the people of the Willamette Valley. It sets forth basic principles showing how men's actions cause future consequences in the environment.
    Resource Type:
    Book
    Full Text:
    Thomas-Guilbert, Local Government Relations Divi.sion, Executive .l).)pa·r tmcnt, State -of Oreg.on