UNCI,. A.SST FIFO 



SECURITY CLASSIFICATION OF THIS PAGE C^Thon Data Entered) 



REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



MR 78-3 



2. GOVT ACCESSION NO. 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE fond Subf/i;^; , 



ECOLOGICAL 'EFFECTS OF AN ARTIFICIAL ISLAND, 

 RINCON ISLAND, PUNTA GORDA, CALIFORNIA 



5. TYPE OF REPORT a PERIOD COVERED 



Miscellaneous Report 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORC*; 



G.F. Johnson 

 L.A. deWit 



8. CONTRACT OR GRANT NUMBERfoJ 



DACW 72-76-C-OOll 



9. PERFORMlNG-ORGANiZATION NAME AND ADDRESS 



, - Dai 



C__ll( 



Dames § Moore ^^'^ 

 QD Greendon Avenue 

 Los Angeles, California 90024 



G31532 



t1. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



September 1978 



13. NUMBER OF PAGES 



10^ ^ ^ c - 



U. MONITORING AGENCY NAME ft ADDRESSC// di«i>ron( Irom Controlling Otilce) 



IS. SECURITY CLASS, (ol thin report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT (of Ihia Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (ol the abstract anterad In Block 20, II dJtlerent Irom Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue 



aary and Identify by block number) 



Artificial island 

 Bottom sediment 

 Ecological effects 



Microecosystem 



Punta Gorda, California 



Rincon Island 



I. ABSTRACT fCanffeue aa reverM* a£ita ff n m j^eaaa ry mxd- Identify by block number) 



This study documents marine ecological conditions at Rincon Island, 

 located approximately 0.8 kilometer offshore between Ventura and Santa 

 Barbara, California, in a depth of 14 meters. The island, which was con- 

 structed between 1957 and 1958 to serve as a permanent platform for oil and 

 gas production, is particularly suitable for ecological study. Habitat fea- 

 tures associated with the armor rock and concrete tetrapods surrounding the 

 island support a "microecosystem" which differs in biotic composition from 

 surrounding natural bottom areas. (continued) 





M73 



EDITION OF t NOV 65 IS OBSOLETE 



UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS PAGE (When Date Entered)^ 



