UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS PAGE(TWi«n Dmta Bnland) 



Abiotic parameters, water temperature, dissolved oxygen and salinity were 

 measured. Sediments were analyzed for particle-size distribution, percent 

 organic carbon and percent carbonate. 



Bentbic macroinvertebrates were represented by 162 taxa of 14 major animal 

 phyla. Species composition and faunal densities varied seasonally. Poly- 

 chaetes and amphipods were the most abundant animal groups; a small number of 

 species were dominant at nearly all stations. Species diversity was lowest in 

 the swash zone and sandbar stations and highest offshore. 



Sediment composition was similar to that of Saloman's (1976) study within 

 limits of sampling and processing errors. Faunal composition was found to be 

 different from 1976 but was attributed to normal seasonal and spatial varia- 

 tions. Based on benthic community analyses and sediment parameters, no signif- 

 icant differences were found between nourishment borrow sites and surrounding 

 areas and in the nearshore areas where beach nourishment was conducted. No 

 long-term adverse effects of beach nourishment were detected. 



UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS P KGEfWhan Data Enlered; 



