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Filtering by: Subject Fishery management -- Oregon Remove constraint Subject: Fishery management -- Oregon Decade 1970-1979 Remove constraint Decade: 1970-1979 Rights Statement In Copyright Remove constraint Rights Statement: In Copyright

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  • Efficiency in Oregon's commercial salmon fisheries : a historical perspective

    Creator:
    Hatley, Thomas Alfred
    Abstract:
    Historic changes that have taken place on Oregon's commercial salmon fisheries are described in terms of their effects on the efficiency of fishermen. This historical analysis provides a background for comparative efficiency studies of Columbia River gillnetters and ocean trollers with the objective of determining which harvester group was more...
    Resource Type:
    Masters Thesis
    Full Text:
    chinook salmon. Evolutionary trends in salmon fishery management have tended to decrease efficiencies

  • Controlling water temperatures with buffer strips

    Creator:
    Brazier, Jon Roger
    Abstract:
    Buffer strips have been proposed as a method for controlling temperature changes in streams adjacent to clear-cuttings. Nine small mountain streams in Oregon's Coast Range and Cascade Mountains were studied to determine the influence of buffer strips on water temperature. Timber volume in the strip, strip width, and canopy density...
    Resource Type:
    Masters Thesis

  • Ecological land units of Bear Creek watershed and their relationship to water quality

    Creator:
    Mattison, Jeffrey L. and Buckhouse, John C.
    Abstract:
    During 1975 and 1976 a sedimentation study was conducted in the Bear Creek watershed, located in the southeastern corner of central Oregon's Crook County. A Rocky Mountain infiltrometer was used to simulate high intensity rainfall over 468 sedimentation plots. Rainfall and runoff were measured and a sample of the runoff...
    Resource Type:
    Technical Report
    Full Text:
    Oregon State University Corvallis, Oregon WRRI -A - 032 September 1977 1 TABLE OF CONTENTS