1,250 

 1,000 



3 750 



3 

 3 



I 500 



250 





 250 



200 



f) 



I 150 



3 



I 100 

 50 







Figure 5, 



I 



Worms 



JA^^zM^ 



■szfZ^Zpszhi 



2 



^ 



pi 



21 



fej 



t^ 



■^^fT^— 



J 



Bivalves 



^1 



m 



%. 



Oct. Nov. Dec. Jan. Feb. Mar. Apr. May 



1972 I 1973 



Settling jar occurrence during study period. Each bar 

 represents the number of individuals o» species per jar 

 per overlapping 16-day exposure interval. 



22 



