sampled algae from the Millstone effluent quarry over an 18 month period (including several shutdowns) 

 and found 42 species in the 3 major algal divisions, with proportions similar to those found in NUEL 

 quarry studies (Table 5). All species noted by Schneider except Spongomorpha arcta were present in our 

 quarry collections (this species was found in the quany cut). Schneider also reported the range of 

 temperatures over which each species occurred in his study area; relative algal proportions change with 

 elevations in water temperature, a fact also evident in NUEL quarry data. In Schneider's study and our 

 own, when temperatures exceeded 25 "C and 30 °C, a difference in species proportions became evident. 

 With elevated temperatures, the number of brown algal species decreased rapidly in the quarry, thereby 

 decreasing the proportion of browns relative to other groups. The relative proportions of species in each 

 algal division are similar in both Schneider's study and the NUEL quarry study (Table 5). Divisional 

 proportions are independent of species number and indicate phytogeographic afTmity (Druehl 1981). 



Table 5. Relative proportion of each major algal division (reds, browns, greens) from New 

 England collections and MNPS quarry collections. 



32:23 

 31:26 

 28:25 



45:26:29 

 46:25:29 

 46:21:33 

 58:10:32 

 57: 3:40 

 45:24:31 

 50:12:38 

 57: 5:38 



Maine open coast 



New Hampshire open coast 



Great Bay estuary and 



NH-Maine open coast 



CT intertidal and subtidal 



reference sites 



MNPS quany 



>25°C 



>30X 

 MNPS quany 



>25°C 



>30°C 



Vadas (1972) 



Mafhieson and Hehrc (1986) 



Mathieson et a/. (1981) 



Schneider et al. (1979) 

 NUEL (1979-1986) 

 NUEL (1979-1986) 



Schneider (1981) 



21 



