Aug— Feb 



SITE 



100 

 90 

 80 

 70- 

 60 

 50 

 40 

 30 i 

 20 

 101 



Nov— May 



i 



SITE 



Feb— Aug 



May— Nov 



i 



SITE 



DEAD SARNACLfS 



SITE 



n-^vv^M DEAD BARNACU 



Figure 4. Mean primary covers of attached fouling organisms on wood panels during each of the four six-month 

 exposure periods from 1979-1986 in the vicinity of the Millstone Nuclear Power Station. 



