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Browsing Oregon Fish Commission Contributions by Author "Johnson, Donald R."

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Browsing Oregon Fish Commission Contributions by Author "Johnson, Donald R."

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  • Johnson, Donald R.; Chapman, Wilbert McLeod, 1910-1970; Schoning, Robert W.; Oregon. Fish Commission (Portland, Or. : Oregon Fish Commission, 1948)
    1. Six major types of commercial gear have been used to take salmon and steelhead on the Columbia River; namely, gill nets, set nets, seines, traps, fish wheels and dip nets. 2. The five important commercial species in t ...
  • Schoning, Robert W.; Merrell, Theodore R.; Johnson, Donald R.; Oregon. Fish Commission (Portland, Or. : Oregon Fish Commission, 1951-11)
    1. The Indians at Celilo Falls catch an average of over 2,600,000 pounds of fish each year, in dip nets in a manner very much the same as used by their ancestors. 2. The bulk of the fish caught at Celilo Falls is from t ...
  • Schoning, Robert W.; Johnson, Donald R.; Oregon. Fish Commission (Portland, Or. : Fish Commission of Oregon, 1956)
    A study was undertaken in the fall of 1948 by the Oregon Fish Commission to determine the possible presence and importance of a delay in the migration of adult chinook salmon (Oncorhynchus tshawytscha) at Bonneville Dam ...
  • McKernan, Donald L. (Donald Lynn), 1918-1979; Johnson, Donald R.; Hodges, John I.; Oregon. Fish Commission (Portland, Or. : Oregon Fish Commission, 1950)
    Three factors were found to be significantly correlated with the fluctuations and trends in silver salmon production in Oregon. Logging was found to adversely affect the runs of salmon in later years. Exceptional winte ...

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