EPA-600/ 8-82-022 

 July 1982 



Research on Fish and 

 Wildlife Habitat 



Technical Editor 



William T. Mason, Jr. 



U.S. Fish and Wildlife Service 



Leetown, West Virginia 



Cousulting Editor 



Sam Iker 

 Chevy Chase, Maryland 



Office of Research and Development 



U.S. Environmental Protection Agency 



Washington, D.C. 20460 



