REPORT DOCUMENTATION PAGE 



form approved 



0MB No. 0704-0188 



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 and to the Office of Management and Support, Paperwork Reduction Project (0704-0188), Washington, D.C. 20503. 



1. AGENCY USE ONLY (LEAVE BLANK) 



2. REPORT DATE 



November, 1999 



3. REPORT TYPE AND DATES COVERED 



FINAL REPORT 



4. TTTLE AND SUBTITLE 



ECOLOGICAL MONITORING OF A CONTRUCTED INTERTIDAL FLAT AT JONESPORT, ME 



6. AUTHOR(S) 



Gary L. Ray, Ph.D. 



5. FUNDING NUMBERS 



7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 



US Engineer Research and Development Center — WES — Coastal Ecology Branch 

 3909 Halls Ferry Road 

 Vicksburg,MS 39180-6199 



8. PERFORMIGORGANIZATION 

 REPORT NUMBER 



9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 



US Army Corps of Engineers-New England District 

 696Virginia Rd 

 Concord, MA 01742-2751 



10. SPONSORING/MONITORING 

 AGENCY REPORT NUMBER 



DAMOS Contribution No. 126 



n. SUPPLEMENTARY NOTES 



Available from DAMOS Program Manager, Regulatory Branch 

 USACE-NAE , 696 Virginia Rd, Concord, MA 01742-2751 



12a. DISTRIBUTION/AVAILABILITY STATEMENT 



Approved for public release; distribution imlimited 



12b. DISTRIBUTION CODE 



13. ABSTRACT 



Intertidal flats are ecologically and commercially important habitats to the New England region of the U.S. They 

 provide forage for commercially important fish species and both migratory and resident shorebirds. They also support 

 shellfish and bait- worm industries. As a demonstration of the potential for beneficial use of dredged material in construction 

 of these habitats, dredged materials from a harbor construction project were placed on a site on the western side of Sheep 

 Island, Jonesport, Maine. After nine years the physical integrity of the site has not been compromised. The site quickly 

 developed a substantial population of the commercially important soft-clam, Mya arenaria , as well as a diverse and 

 abundant infaunal community. A population of the bait-worm Nereis virens was initially established but commercial-sized 

 worms were absent during the last sample period. The absence seems most likely due to normal interaimual fluctuations in 

 abundance. A second, older constructed flat, resulting from intertidal disposal of dredged material, Beals Island, has an 

 extensive bait worm population but few soft-clams. Differences in species' abundances appear most likely to be due to 

 substrate differences. The infaunal community, the principal source of forage for fish and shorebirds, at both sites is 

 comparable in diversity, abundance, biomass, and species composition to other New England intertidal flat assemblages. 



14. SUBJECT TERMS Intertidal flats. Sheep Island, Jonesport, Beals Island 



1 5. NUMBER OF TEXT PAGE S: 62 



16. PRICE CODE 



17. SECURITY CLASSIFICATION OF 

 REPORT Unclassified 



18. SECURITY CLASSIFICATION 

 OF THIS PAGE 



19. SECURITY CLASSIFICATION 

 OF ABSTRACT 



20. LIMITATION OF 

 ABSTRACT 



