FWS/06S-7Z/6? 



Biological Services Program 



FWS/OBS 78/69 



SEPTEMBER 1978 



A CONCEPTUAL ECOLOGICAL 

 MODEL FOR CHESAPEAKE BAY 



f% H G / ^ 



I DOCUMENT 



COLLECTiON 



EPIPHYTIC 

 AIGAE 



BFNTHIC 

 ALGAE 



-*. EPIFAUNA 



*f ORGANIC ^ 

 V NUTRIENTS J 



K) 



WATER CCUU 



" DETRITUS 



BENTHIC 

 EPIFAUNA 

 1 INFAUNA 



» FISHES 



COWNOSE RAVS 



CRABS 



SHRIMPS 



Seagrass Community 



Sponsored by the Chesapeake Bay Program 

 U.S. Environmental Protection Agency 



Fish and Wildlife Service 



U.S. Department of the Interior 



