5-3 



and on a dolphin off Fort Hale Park in New Haven Harbor (Figure 5-1) . 

 The New Haven Harbor Station pier site is closest to the thermal plume, 

 and is in close proximity to Station 9, sampled monthly as ].iart of the 

 hydrographic program (Figure 5-1). A special survey (NAI, 1977b) 

 revealed that the thermal plume from Harbor Station could occasionally 

 intersect Stations 8 and 9 with a temperature increase above ambient of 

 0.5-1.0°C. 



A rack containing a series of horizontal 3-1/2" x 10" x 3/4" 

 asbestos-faced pine panels was installed at each site one meter below 

 the approximate spring low-tide level (Figure 5-2). Each month from 

 July 1971 through October 1977 two panels were removed from each sta- 

 tion: a short-term panel that had been exposed for 1 month and a long- 

 term panel that had normally been submerged for 12 months (Table 5-1) . 

 Two new panels were installed each month to replace those removed. 

 During the first year of the program (1971) , long-term panels were 

 removed after the second month and every month thereafter until the 

 twelfth month. Consequently, until the study was a year old (July 1972), 

 long-term panels showed a monthly progression of colonization and growth, 

 rather than a twelve-month accumulation of species. This was also true 

 on panels replaced after destruction of the panel arrays by storms and 

 ice (September 1976; March 1977) . Sampling occurred each month from 1971 

 through 1977 except where indicated in Table 5-1. 



After collection, each panel was placed in a container with 

 sea water and refrigerated for not more than three days prior to iden- 

 tification. (Prior to 1976, panels were wrapped in wet newsprint and 

 refrigerated before placement in individual running seawater baths) . 

 Enumeration and size observations were made on all macroscopic epifauna 

 attached to the asbestos panel, and from July 1976 through October 1977 

 color photographs were made of each panel. Wooden blocks were scraped 

 clean and examined for boring organisms. 



The experimental regime of 12-month long-term and 1-month 

 short-term panels was selected in New Haven Harbor to provide infor- 



