PREFACE 



The U.S. Army Coastal Engineering Research Center (CERC) conducts 

 and sponsors research to provide definitive information on the ecological 

 impacts of constructing coastal structures such as groins, jetties, 

 breakwaters, and islands. Rincon Island, Punta Gorda, California, was 

 the first major artificial island to be constructed with full ocean 

 exposure. This report describes an 18-month study sponsored by CERC to 

 examine ecological effects of construction of Rincon Island (CERC Con- 

 tract No. DACW 72-76-C-OOll). 



The report was prepared by G.F. Johnson, Project Marine Ecologist, 

 and L.A. deWit, Staff Marine Ecologist, with supervision provided by Dr. 

 B.A. Wales, Principal-in-Charge; all of Dames § Moore, Consultants in 

 the Environmental and Applied Earth Sciences, Los Angeles, California. 

 Professor W.L. Brisby of Moorpark College, Moorpark, California, partici- 

 pated in the fieldwork and provided valuable consultation and review. 



Special recognition is due to the following students of Professor 

 Brisby, who were responsible for a major part of the field data acquisi- 

 tion: G. Wilson, D. Ospenson, D. Rasmussen, and R. Dawson. The authors 

 gratefully acknowledge the interest in the project and valuable assist- 

 ance provided by Dr. J. Siva, J. Hundley, C. Miller, and R. Carlson, all 

 of Atlantic Richfield Corporation. 



Marine Ecological Consultants, Inc. of Solana Beach, California, 

 were subcontractors for taxonomic work. Dr. K.R. Critchlow of Dames § 

 Moore assisted during two of the seasonal surveys of permanent transects. 

 Dr, R.A. Park III, Professor of Geology and Ecosystem Analysis, Renssalaer 

 Polytechnic Institute, directed an analysis of data using an R-mode 

 cluster analysis computer program. 



A.K. Hurme of the CERC Coastal Ecology Branch was the technical 

 monitor for this contract under the general supervision of E.J. Pullen, 

 Chief, Coastal Ecology Branch. 



Comments on this publication are invited. 



Approved for publication in accordance with Public Law 166, 79th 

 Congress, approved 31 July 1945, as supplemented by Public Law 172, 

 88th Congress, approved 7 November 1963. 



JOHN H. COUSINS 



Colonel, Corps of Engineers 



Commander and Director 



