Table 1. Number of species and relative proportion of each major algal division: 

 a) Rocky shore survey, annual totals, 1979-1981, b) Rocky shore survey, 

 1981 data, by station, c) Results from other studies (i-Millstone 

 exposure panel program (1968-1981), ii - Mathieson et al. (1981), iii- 

 Schneider (1981). Values presented as: # species (relative %) (See text 

 for additional explanation) . 



b) GN BP FE FS WP SE SS 



Rhodophyta 36 (44) 42 (49) 32 (45) 29 (40) 40 (44) 28 (43) 34 (44) 



Phaeophyta 22 (26) 22 (26) 16 (22) 19 (26) 27 (29) 19 (29) 22 (28) 



Chlorophyta 25 (30) 21 (25) 24 (33) 25 (34) 25 (27) 18 (28) 22 (28) 



Total 83 85 72 73 92 65 78 



ii - Mathieson et al. (1981) iii - Schneider (1981) 



o 



all sites total > 25 C > 30 C 



76 (47) 19 (45) 13 (50) 12 (57) 



45 (28) 10 (24) 3 (12) 1 ( 5) 



41 (25) 13 (31) 10 (38) 8 (38) 



162 42 26 21 



11 



