搜索条件

清除筛选
筛选: Alternative title ssim Bulletin series no. 3 删除限定条件 Alternative title ssim: Bulletin series no. 3 位置 Willamette Valley, Oregon, United States, (Hypsographic) 删除限定条件 位置: Willamette Valley, Oregon, United States, (Hypsographic)

搜索结果

  • Landscape Genomics and Climatic Responses of Willamette Valley Alders

    创造者:
    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:
    white alder populations, is highly constrained except along the Willamette River. In Chapter 3, we

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

    创造者:
    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:
    landscape context. We conducted point transect surveys in 3 strata: woodland interiors, large woodland

  • Subsistence variability in the Willamette Valley

    创造者:
    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:
    . Environmental Setting Geography Geology Soils Climate Flora Fauna Page 1 6 6 7 9 11 12 18 Chapter 3

  • The Willamette Valley choices for the future

    创造者:
    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:
    , and opm space meets r:ecre- 3 tlonu demands of growing Valley commuM ty . EMPLOYMENT AND INCOME

  • Choices for the future: The Willamette Valley

    创造者:
    The Willamette Valley Livability Forum
    Abstract:
    Prepared for by the Willamette Valley Livability Forum. May 1999.
    Resource Type:
    Technical Report
    Full Text:
    Willamette Valley Livability Forum The Willamette Restoration Initiative Page 1 5 15 27 37 51 3 7 10