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Creator:: La Bolle, Larry D.
Abstract:: Shallow-water habitats (< 0.5 m depth) of the upper littoral zone of John Day Pool of the Columbia River were heavily used by young fishes in comparison with lower littoral and limnetic waters. Through the season, 96.9% of the 64,700 larvae and juveniles collected (corrected for effort) were from upper...
Resource Type:: Masters Thesis

Creator:: Richards, Jack Arthur
Abstract:: It is important to avoid misallocation of resources for either private or public production. Misallocation in public programs can result from failure to employ resources in h:igh priority uses or to eliminate programs that have become obsolete. This study evaluates the benefits and costs of the continuing public program aimed...
Resource Type:: Dissertation
Full Text:: Estimated Net Potential Benefits 123 Net Value of Commerci1 Fishery 125 Net Economic Value of Columbia River

Creator:: Beaty, Roy E.
Abstract:: The average size and age of chinook salmon (Oncorhynchus tshawytscha) caught in commercial fisheries along the Pacific Coast of North America have decreased substantially in this century. These declines might be caused in part by changes in size and age at maturity within the stocks contributing to those fisheries. Upriver...
Resource Type:: Masters Thesis
Full Text:: maturity of Brights 9 2. Chinook salmon landings, by run, in the Columbia River commercial fishery, 1866

Creator:: Clark, Jerry E., 1949-
Abstract:: Fisheries economics is a recognized body of research which is characterized by the joint study of economics, the biological characteristics of fishery resources, and the policies (regulations) used in the management of fisheries. This thesis is composed of three papers, each of which is primarily associated with one of the...
Resource Type:: Dissertation
Full Text:: around the Columbia River. The primary purpose of this research is to contribute to the understanding

Creator:: Claiborne, Andrew M.
Abstract:: The mechanisms of mortality during critical life stages of fish are not well-understood and, for many species, it is not clear if the mechanisms are similar for naturally and artificially propagated individuals. For Chinook salmon (Oncorhynchus tshawytscha), natural fish potentially face negative interactions, such as competition, and survival disadvantages, such...
Resource Type:: Masters Thesis
Full Text:: Columbia River estuary. Fishery Bulletin 110:426-450. Zabel, R. W., and J. G. Williams. 2002. Selective

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