USE AND LIMITS OF ECOSYSTEM MODELS: A GREAT LAKES PERSPECTIVE 



Donald Scavia 



Great Lakes Environmental Research Laboratory 



National Oceanic and Atmospheric Administration 



2300 Washtenaw Avenue 



Ann Arbor, Michigan 48104 



and 



Division of Biological Sciences 

 The University of Michigan 

 Ann Arbor, Michigan 48109 



GLERL Contribution No. 296 



57 



