Fig. 1. Map of the Millstone Point area st^iovving Ihc location of intertidal (GNI = Giants Neck, JCI = Jordan Cove 

 and WPI = White Point) and siibtidal (GNS = Giants Neck, INS = Intake, FFS = Emiicnt, JCS = Jordan Cove) inlauiial 

 monitoring stations. 



comparing data obtained during the pre- 

 operational and operational periods. Power-plant 

 related impacts should be evidenced as changes 

 in infaunal abundance, species number, and 

 changes in dominance structure (Boesch 1973; 

 Oden 1979; .Jordan and Sutton 1985). In addition, 

 impacts might result in high densities of species 

 considered "opportunists". (McCall 1977; Sanders 

 et al. 1980). However, in LIS, many of these 

 species are considered typical of soft-bo'tom com- 

 munities (Rhoads and Young 1970; McCall 1977), 

 thus, their appearance may not necessarily reflect 

 power plant-induced impacts. The data analysis 

 techniques used in this report were selected to 



allow for identification of power plant impacts 

 within the naturally variable framework charac- 

 teristic of temperate intertidal and shallow-water 

 macrobenthic communities (Eagle 1975; 

 Livingston 1982; Tlint and Younk 1983; Holland 

 and Mountford 1977). 



Regression Analyses 



Multiple regression techniques were used to 

 identify and remove significant temporal variation 

 in community abundance, numbers of species and 



Benthic Infauna 



61 



