5-49 



fall or summer. These long-term panel difjtributions are probably 

 related to larval settlement as they coincide with peak spawning peri- 

 ods. Settlement on short-term panels occurs in early spring and summer 

 for most taxa such as Obelia spp. , Corophium insidiosum, Polydora llgni , 

 and Mytilus edulis . Fall settlement is seen as a smaller peak in some 

 species (e.g., Balanus spp., Polydora ligni) and with Balanus , is 

 generally the result of spawning from barnacles that settled in the 

 spring (Grave, 1933) . 



Analysis of the New Haven Harbor exposure panel data shows no 

 change from preoperational to operational years attributable to power 

 station activities. Fluctuation in seasonal and annual distributions of 

 panel -community members is characteristic of the assemblage. Similar 

 patterns are seen in other fouling panel studies in the greater Long 

 Island Sound area. The harbor in general appears to support a pro- 

 ductive, relatively stable panel community which has not been impacted 

 by the New Haven Harbor Station operation. 



