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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
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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
Full Text:: THE ANALYSIS OF FISHERIES DATA IN a paper now in press as a Bulletin of the U. S. Fish and Wildlife

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
Full Text:: . Calkins of the University of California and Dr. W. F. Durand of Stanford University, made a study of the

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
Full Text:: -quarters of the total catch. In addition to the catch made in the river a large number of Columbia River

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
Full Text:: evident that these resources, taken as. a whole, are decreasing in productivity and it has been frequently

Creator:: Marr, John C. and Oregon. Fish Commission
Abstract:: Samples, consisting of scales, length and weight measurements, and sex determinations of chum, pink, and silver salmons, were taken from the commercial catch in the Columbia River in 1914. Five hundred eighteen chum scales were examined. All fish had gone to sea early in their first year; and 70.5 percent...
Resource Type:: Technical Report
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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
Full Text:: with the counts at Bonneville Dam to provide a basis for estimating the escapement. Tables show the

Creator:: Brock, Vernon E. and Oregon. Fish Commission
Abstract:: The temperate water fisheries for albacore in the North Pacific seem to exploit somewhat similar segments of the respective populations present in the various localities. It is clear that in most of the exploited populations two or at most three year classes are highly dominant. In the California fishery from...
Resource Type:: Technical Report
Full Text:: to yield a constant supply the development is sound. If, on the other hand, the supply is likely to

Creator:: Johnson, Donald R., Chapman, Wilbert McLeod, 1910-1970, Schoning, Robert W., and Oregon. Fish Commission
Abstract:: 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 the Columbia River are chinook, silver, blueback and chum salmon and steelhead...
Resource Type:: Technical Report
Full Text:: O 6,444-4:4.fr a, a. .3■11i11.!illilli•IMM•41■1•11 •■•01

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