ll. 



O 



CO 



h- 



Z> 



o 

 o 



200 



150 



100 



50 



150 



/00 



50 



WHITE POINT 

 MYT/LUS EDUL/S 



FEB (98/ 



/ 2 3 4 5 6 



AUG 1980 



~-m 



400 

 300 

 200 

 100 



zoo 



200 

 100 



INTAKE 



MYTILUS 

 EDULIS 

 FEB 1981 



6 5 4 1 2 3 



400- 

 300- 



6/ANTS NECK 

 TEREDO NAVALIS 

 NOV 1980 



(23456 

 GIANTS NECK 



LIMN0RIA SPP. 

 NOV 1980 



2 3 4 5 

 REPLICATE 



400-1 



300- 



200- 



100- 



75- 

 50- 

 25- 



INTAKE 



BALANUS JUVENILES (<5mm) 



MAY /98» 



I 2 3 4 5 6 

 EFFLUENT 



BALANUS JUVENILES (<5mm) 

 AUG »980 



?p?a?gpg*g%g 



6 5 4/ 23 

 REPLICATE 



Figure 5. 



Histograms of the abundance for individual species on exposure panels, 

 showing the bias in abundance between (replicates 1-3) on the upper 

 level and panels (replicates 4-6) on the lower level of a rack. 

 Note: In August 1980 replicates 1-3 w re on the lower level and 

 replicates 4-6 were on the upper level. 



16 



