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  • Soil physical properties and available water capacity of southwest Oregon forest soils

    Creator:
    Flint, Alan L.
    Abstract:
    Measurements for water retention calculations and physical characterization were made on skeletal and non-skeletal soils in southwest Oregon. A new bulk density sampler was designed for the physical characterization of the steep, skeletal soils commonly encountered in this area. The new sampler and the techniques required for the measurement and...
    Resource Type:
    Masters Thesis
    Full Text:
    Lavender and Chet Youngberg for being on my committee, with special thanks to Chet, without his help I

  • Fine organic debris and dissolved oxygen in streamed gravels in the Oregon Coast Range

    Creator:
    Skaugset, Arne E.
    Abstract:
    Intragravel organic loading and intragravel dissolved oxygen were studied to determine the relationship between timber harvesting adjacent to first-, second-, and third-order streams and intragravel water quality. Twenty watersheds in the central Coast Range of western Oregon were studied of which five were undisturbed, nine were partially harvested, and six...
    Resource Type:
    Masters Thesis

  • Clay mineralogy in relation to landscape instability in the coast range of Oregon

    Creator:
    Istok, J. D.
    Abstract:
    The mineralogy of soils involved in mass movement in Oregon's coast range was examined to determine relationships between clay mineralogy and landscape instability. The objectives were: 1) to determine what kind of materials constitute the less than 2μ fraction of soils involved in different categories of mass movement, and 2)...
    Resource Type:
    Masters Thesis
    Full Text:
    thank Chet Youngberg, Hank Froehlich, and Ed Taylor for serving on my committee. The patience and

  • Silvicultural mechanical site preparation

    Creator:
    Moore, William Wardlaw
    Abstract:
    The preparation of suitable sites for planting and growing of tree seedlings following logging is recognized by British Columbia Forest Service as a major silvicultural problem in the Central and Northern Interior regions of the province. Over the past few decades, scarification trials have been made with various types of...
    Resource Type:
    Capstone Project

  • Variation in the foliar nutrient status of several Douglas-fir provenances

    Creator:
    Stevens, Roderick D.
    Abstract:
    From a preliminary 1969 foliar analysis, eight provenances were chosen from the sixteen included in a region-wide, reciprocal Doulgas-fir provenance study for further study of variation in foliar nutrition. In the fall of 1969 separate foliar samples were collected from ten trees per provenance at each of ten plantations ranging...
    Resource Type:
    Dissertation