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Some factors influencing the trends of salmon populations in Oregon

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. ...
Salmon fisheries of the coastal rivers of Oregon south of the Columbia

In spite of the progressive restrictions of the commercial river fishery during the past fifty years, the trend of the salmon populations of the coastal rivers has been downward. It is almost impossible to...

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