divisions, with proportions similar to ours (Table lciii) . However, he 

 also reported the range of temperatures over which each species was 

 found; extracting from his data the number of species present when water 

 temperatures exceeded 25 C (77 F) and 30 C (86 F) shows a greatly different 

 pattern. With elevated temperatures, the number of brown algal species 

 decreases rapidly, concomitantly decreasing the proportion of browns 

 relative to the other groups. This phenomenon has also been noted in 

 the Millstone Exposure Panel Program (NUSCo 1982) . 



Our data show that few local algae are found exclusively in the 

 quarry, or never found there. However, many species that are common 

 elsewhere (e.g. Fucus vesiculosus ) are rare in the quarry, or species 

 characteristic of quarry collections (e.g. Agardhiella subulata ) are 

 seldom found outside of the discharge cut. Additionally, the heated 

 effluent has an effect on seasonal patterns of occurrence and reproduction; 

 the present sampling program will enable us to determine the degree and 

 extent of this effect. 



The qualitative collections will also be particularly important for 

 predicting and assessing the impact of widening the quarry cut and of 

 Unit 3 operation. The sampling sites provide a full range of potential 

 thermal stress; the two Seaside stations and Giants Neck are beyond MNPS 

 effects, and the three sites within the quarry are exposed to undiluted 

 effluent. The two Fox Island stations, White Point, Twotree Island, Millstone 

 Point, and Bay Point are potentially impacted, and bracket the predicted 

 plume; the sampling site in the quarry cut represents a transition zone 

 between the quarry and the other stations. 



In summary, the qualitative algal collections, as one facet of the 

 rocky shore monitoring program, allow us to determine what species are 



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