six species comprised more than half (52.0 percent) of all 

 individuals collected (App. A). These included four species of bivalve 

 mollusks ( Ervilia nitens , E. ooncentviaa^ Tvansennella stimpsoni^ and 

 'PleuTomevi-s tridentata) , one polychaete i Lumbrinereis tenuis), and one 

 tanaidacean {Apseudes sp.). More than half (54.0 percent) of the 

 species collected were represented by five or fewer individuals. 



The numbers of species and individuals collected at each station 

 during the four sampling periods are shown in Table 2. Borrow station 

 3 yielded the largest number of species and individuals in all sampling 

 periods except June, when borrow station 4 had more individuals. 

 However, 60.4 percent of the fauna at borrow station 4 in June were 

 represented by only one species, the bivalve E. nitens. Although this 

 species attains adult size at 7 to 10 millimeters (Abbott, 1974), only 

 juveniles (2 to 3 millimeters) were collected in the present study. E. 

 nitens accounted for 23.6 percent of all individuals collected in the 

 study (App. A) . 



Table 2. Total number of species, individuals, and 

 extrapolated faunal densities. 



No. of species 



No. of individuals 



Extraoolated 

 faunal 

 densities^ 



44 216 



38 187 



80 539 



65 1,514 



Total number of different species: 

 Total number of individuals: 



1,831 

 1,585 

 4,568 

 12,831 



133 

 2,456 



September 

 1977 



404 

 126 

 631 

 236 



3,424 

 1,068 

 5,347 

 2,000 



Total number of different species: 

 Total number of individuals: 



133 

 ,397 



December 



1 





30 





322 



1977 



2 





26 





305 





3 





98 





517 





4 





58 





204 







Total 



numbei 



r of 



different species: 







Total 



numbe] 



r of 



individuals: 



March 1978 



1 





39 





103 





2 





41 





151 





3 





67 





283 





4 





66 





195 



2,729 

 2,585 

 4,381 

 1,729 



873 

 1,280 

 2,398 

 1,653 



Total number of different species: 

 Total number of individuals: 



125 

 1,348 



108 

 732 



'Measured by individuals per square meter. 



17 



