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Filtering by: Committee Member Li, H. W. Remove constraint Committee Member: Li, H. W. Subject Forest ecology Remove constraint Subject: Forest ecology

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  • Silvicultural impacts of sheep grazing in Oregon's Coast Range

    Creator:
    Leininger, Wayne C.
    Abstract:
    A three-year investigation was conducted during 1980-1982 to evaluate the potential of using herded sheep as a silvicultural tool to suppress brush in Douglas-fir (Pseudotsuga menziesii) plantations of Oregon's Coast Range. Sheep browsing of Douglas-fir was highest in May soon after bud break. Averaged over the 2 years of grazing,...
    Resource Type:
    Dissertation
    Full Text:
    . Beschta, W. H. Emmingham, and H. F. Horton. Dr. W. C. Krueger was also very helpful during my tenure at

  • Forest associations and secondary plant succession in the southern Oregon coastal range

    Creator:
    Bailey, Arthur Wesley, 1938-
    Abstract:
    Forest associations, secondary succession, and relationships of plant communities to Roosevelt elk were investigated. Stratification of vegetation into ecological units and an understanding of secondary succession by habitat-type were a necessary first step in investigations into browsing of conifers by elk. The study was jointly conducted by the Oregon State...
    Resource Type:
    Dissertation
    Full Text:
    , C. T. Youngberg, W. W. Chilcote, and H. J. Rayner. A special word of thanks is due Dr. C. T

  • Snowbrush, Ceanothus velutinus Dougl., its ecology and role in forest regeneration in the Oregon Cascades

    Creator:
    Zavitkovski, J.
    Abstract:
    The ecological and silvicultural importance of snowbrush, Ceanothus velutinus, in the areas west of the summit of the Oregon Cascades was studied. Particular attention has been given its nitrogen- fixing ability under both field and greenhouse conditions. On west slopes of the Oregon Cascades snowbrush occurs above 2, 500 feet...
    Resource Type:
    Dissertation
    Full Text:
    . Thanks are due to the members of my graduate committee Drs. J. R. Dilworth, H. J. Evans, and W. P. Lowry