93 



sought, an independent review of this latter document by the cxpcrl panel could have highlighted some 

 of the problems it contains. Because the expen panel lepresenls the broadest range of knowledge on 

 DCS and OBT in fish, its role should be cireng(hene<l and (his resource of knowledge used for the 

 design of biological monitoring programs and peer review of analyses which form the basis for 

 managing river DCS levels 



1 hope that the information I have provided wil) bo of some assistance in understanding many of the 

 problems which have been encountered in the development of a scientific basis for managing Columbia 

 and Snake River anadrumous salmonid stocks Please Iccl floe to contact me if you have any 

 questions about the information I have provided 



Sincerely, 



Larry E Fidler, Ph.D., R.P, Bio. 

 President 



Re'"erences 



j 

 r.bel, W.J. 1971 . Dissolved Nitrogen Concenlraiions in the Columbia and Snako Rivers in 1970 and 



Their Effect on Chinook Salmon and Steelhcad Trout NOAA Tech. Rept. NMFS SSRF-646. 



7 p. 



Fidler, L E 1988. Gas Bubble Trauma in Fish Ph.D. Thesis, Department of Zoology, University of 

 British Columbia, Vancouver, British Columbia. 



Fidler, L.E , and SB. Miller. 1994. British Columbia water quality guidelines for dissolved gas 



supersaturaiion. Contract report to B C Ministry of linvircnmont by Aspen Applied Sciences 

 Ltd., Valemount, B.C. 



Jensen, J O T., Schnute, J., and D F. Alderdice 1986, Assessing juvenile salmonid response to gas 

 supersaturatlon using a general multivariate dose-response model, Can. J. Fish. Aquat. Sci. 

 43(9): 1694-1709. 



Montgomery Watson .1994 Allowable gas supersaturation for fish passing hydroelectric dams. Task 

 5, Review of monitoring plans and gas bubble disoasc signs and gas supersaturation levels on 

 the Columbia and Snake Rivers. Contiacl report to the U.S. Department of Energy, 

 Bonneville Power Administration. | 



92-531 0-96-4 



