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Creator:: Rich, Willis H. (Willis Horton), 1885-1972 and Oregon. Fish Commission
Abstract:: In a paper now in press as a Bulletin of the U. S. Fish and Wildlife Services the writer has discussed the downward trend of the catch of Columbia River Chinook salmon since 1920 and has stated that the decline is doubtless an indication that the runs of this species...
Resource Type:: Technical Report

Creator:: American Society of Ichthyologists and Herpetologists, Rich, Willis H. (Willis Horton), 1885-1972, Holmes, Harlan B., 1898-1975, Chapman, Wilbert McLeod, 1910-1970, Hanson, Harry A., Taft, Alan C., and Sumner, Francis Bertody, 1874-1945
Abstract:: A symposium presented before a joint meeting of the American Society of Ichthyologists and Herpetologists and the Western Society of Naturalists at Stanford University on June 29, 1939, and published as a special issue of the Stanford Ichthyological Bulletin through the cooperation of the Fish Commission of the State of...
Resource Type:: Technical Report

Creator:: Rich, Willis H. (Willis Horton), 1885-1972
Abstract:: 1. A rational conservation program for such migratory fishes as the salmon must be based on a knowledge of (a) whether or not the species consists of local, self-perpetuating populations and (b) the nature and extent of the oceanic migrations. 2. The conservation of a species that is broken up...
Resource Type:: Technical Report

Creator:: Rich, Willis H. (Willis Horton), 1885-1972 and Oregon. Fish Commission
Abstract:: A study of the fishery problems raised by the construction of the Grand Coulee Dam on the upper Columbia River was done. Part of the study was to estimate the number of salmon taken in commercial fishery for the purpose of comparing this with the number counted as they passed...
Resource Type:: Technical Report

Creator:: Rich, Willis H. (Willis Horton), 1885-1972 and Oregon. Fish Commission
Abstract:: The salmon runs of the Columbia River constitute one of the most important natural resources of the states of Oregon and Washington. Thousands of people are dependent, wholly or in part, upon these resources for their livelihood; and their welfare is dependent upon the maintenance of the salmon runs. It...
Resource Type:: Technical Report

Creator:: Rich, Willis H. (Willis Horton), 1885-1972 and Oregon. Fish Commission. Research Department
Abstract:: The salmon of the Columbia River have supported an intensive fishery for over seventy years but are now showing unmistakable signs of depletion, and various factors are contributing to the rapid progress of this condition. Five species of fish enter into the commercial fishery on the Columbia River itself. These...
Resource Type:: Technical Report

Creator:: Rich, Willis H. (Willis Horton), 1885-1972 and Oregon. Fish Commission
Abstract:: Exceptional data are available for the study of the salmon runs of the Columbia River in 1938. Detailed figures on catch were supplied by Oregon and Washington in such form that they could readily be combined with the counts at Bonneville Dam to provide a basis for estimating the escapement....
Resource Type:: Technical Report

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