ACKNOWLEDGEMENTS 



This research was administered and partially funded by the Illi- 

 nois Department of Energy and Natural Resources (IDENR), with the bal- 

 ance of funding from the Illinois Environmental Protection Trust Fund. 

 The development of the fingernail clam bioassay, one of five bioassays 

 used in this project, was funded separately by grant F-94-R from the 

 Federal Aid in Fish Restoration Program (Wallop-Breaux Act), adminis- 

 tered by the Illinois Department of Conservation. 



Many people contributed to this project. Dr. Anthony A. Paparo, 

 Department of Zoology and School of Medicine, Southern Illinois Univer- 

 sity at Carbondale, did much of the early development of a variety of 

 methods for assessing responses of clams and mussels to contaminants. 

 Ms. Diane Dillon and Mr. Jeffrey Arnold provided valuable technical 

 assistance at Western Illinois University, as did Ms. Louann Burnett at 

 the Natural History Survey in Champaign, and Mr. K. Douglas Blodgett at 

 the Natural History Survey's Long Term Resource Monitoring Station in 

 Havana. Ms. Camilla Smith provided secretarial assistance at the River 

 Research Laboratory of the Stephen A. Forbes Biological Station in 

 Havana. The research could not have been done without the laboratory 

 facilities, office space, and equipment provided by Dr. Richard V. 

 Anderson and the Department of Biological Sciences at Western Illinois 

 University--to both we express our great appreciation. This project 

 would not have come into being without the sustained interest of Dr. 

 John Marl in, Director of the Illinois Pollution Control Board, in the 

 mysterious die-off of fingernail clams in the Illinois River and the 

 widespread ecological repercussions of their failure to recolonize. 

 Finally, we thank our project officers at DENR, Ms. Linda Vogt and Mr. 

 Will iam Denham. 



