11. Toxic Organic Residues in Fish 



Howard E. Johnson 115 



12. Balance of Organic Matter in the Ecosystem of the Rybinskiy 

 Reservoir 



V.I. Romanenko 121 



13. The Importance of Trophic Bonds in the Bacterial Destruction 

 of Organic Matter 



P.P. Umorin 132 



14. Simulation of Potential Pollutant-Caused Changes in the Eco- 

 system, Resulting from the Sensitivity of Aquatic Organisms 

 to Toxicants 



N.S. Stroganov 152 



15. Fish-Population Studies in the Ohio River 



William C. Klein 161 



16. Registration of Pesticides: Considerations in Conducting 

 Aquatic Toxicity Tests 



Richard A. Schoettger 166 



17. Experimental Research on Phenol Intoxication of Aquatic 

 Organisms and Destruction of Phenol in Model Communities 



M.M. Kamshilov and B.A. Flerov 181 



18. History of Changes in Fish Species of the Great Lakes 



John F. Carr 193 



19. Sea Lamprey ( Petromyzon marinus Linnaeus) in the Saint 

 Lawrence Great Lakes of North America: Effects, Control, 

 Results 



Carlos M. Fetterolf, Jr 219 



xiv 



