UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS PAGE (Whan Data Enterad) 



REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



MR 76-1 



2. GOVT ACCESSION NO. 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE fand StibHfJeJ 



EFFECTS OF SUSPENDED SOLIDS ON SELECTED 

 ESTUARINE PLANKTON 



S. TYPE OF REPORT ft PERIOD COVERED 



Miscellaneous Report 



6^ PERFORMING ORG. REPORT NUMBER 



7. AUTHORfo; 



J. A. Sherk, Jr. 

 J.M. O'Connor 

 D.A. Neumann 



8. CONTRACT OR GRANT NUMBERC*) 



DACW72-71-C-0003 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Natural Resources Institute 

 University of Maryland''''^ 

 College Park, Maryland 20742 



G31266 



II. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-EC) 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



January 1976 



13. NUMBER OF PAGES 



5jy Ht f 



14. MONITORING AGENCY NAME ft ADORESS(ll ditlerent from Controlling OHice) 



15. SECURITY CLASS, (ol this report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT (ol this Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (o( the abstract entered In Block 20, II ditlerent from Report) 



IB. SUPPLEMENTARY NOTES 



19. KEY WORDS (Co 



aery and Identity by block i 



Biological components 

 Estuarine plankton 

 Natural sediments 



Patuxent River, Maryland 

 Suspended solids 

 Dredging effects 



0. ABSTRACT (Continue on reverse aide If neceaaary and Identify by block nianber) 



A 3-year laboratory study identified biological components of selected 

 populations of estuarine organisms which were most sensitive to the effects 

 of particle size and concentration of (a) suspended mineral solids similar in 

 size to sediments likely to be found in, or added to, estuarine systems in 

 concentrations typically found during flooding, dredging, and disposal of 

 dredged material, and (b) natural sediments in identical experiments. 



DD rA 



EDrTION OF 1 NOV 65 IS OBSOLETE 



UNCLASSIFIED 



SECURITY CLASSIFICATrOM OF THtS PAGE (Vhen Data Entered 



