Bare Space 



Unoccluded space 



cc 



LU 



> 



o 

 o 



o> 



03 

 4) 



o 



(0 



CC 

 LU 



> 



o 

 o 



100 



50 65 



DEPTH (M) 



20 40 60 



% COVER I. atlantica 



80 



50 65 



DEPTH (M) 



20 40 60 



% COVER I. atlantica 



80 



Figure 3 



A. Percent cover of bare space on all plates at four depths. 

 Mean at 30 m differ significantly from those at 45, 65 and 

 80 m (ANOVA, p < 0.05, 7, 33 df, F = 29.9). 



B. Percent cover of unoccluded space on all plates at four 

 depths. This is space not covered by encrusting species or 

 by branching canopies. Means at 30 m and 50 m differ 

 significantly from those at 60 and 80 m (ANOVA, p < 0.05, 7, 

 33 df , F = 38.9) . 



C. Regression of T. lilliacea percent cover as a function of 

 Idmidronea cover (y = 22.06 - 0.29x, R = 0.71) 



D. Regression of percent cover of all encrusting species 

 pooled as a function of Idmidronea cover (y = 40.29 - 0.40x, 

 R = 0.48) 



55 



