Record Display for the EPA National Library Catalog


Main Title Effect of gas supersaturated Columbia River water on the survival of juvenile chinook and coho salmon /
Author Blahm, Theodore H.,
Other Authors
Author Title of a Work
McConnell, Robert J.
Snyder, George R.
CORP Author United States. National Marine Fisheries Service.
Publisher United States Government Printing Office,
Year Published 1975
OCLC Number 01515151
Subjects Chinook salmon--Effect of water pollution on--Research--Columbia River ; Coho salmon--Effect of water pollution on--Research--Columbia River ; Trout--Effect of water pollution on--Research--Columbia River ; Fishes--Effect of water pollution on
Additional Subjects Fishes, Effect of water pollution on ; Chinook salmon ; Silver salmon
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ESAD  10A000530 Region 10 Library/Seattle,WA 04/05/1991
Collation 22 pages : illustrations ; 26 cm.
"April 1975." Includes bibliographical references (pages 8-9).
Contents Notes
The deleterious effect of high concentrations of dissolved gas on valuable stocks of Columbia River salmon and trout has led pollution control agencies in the Pacific Northwest to consider establishing standards for the amount of dissolved gas in the water. Research has been done with salmonids to define the criteria upon which such standards should be based, but the majority of these studies were carried out in shallow tanks (less than 1 m deep) where super-saturated concentrations of gas had been artificially induced. This report discusses tests that were performed at a field laboratory on the Columbia River. Juvenile chinook, Oncorhynchus tshawytscha, and coho, O. kisutch, salmon were tested in deep and shallow tanks with river water reflecting the prevailing (and fluctuating) concentrations of dissolved gases. Results indicated that the water depth in a deep (3 m) test tank enhanced the survival of test fish compared to shallow tanks (< 1 m). These tests support the hypothesis that test conditions in tanks 1 m deep are not representative of all river conditions that directly relate to mortality of juvenile salmon and trout in the Columbia River.