-, 10m r- 



50": 

 H 



Figure 1.— Vertical distribution of Arlhupyrenia halodytes. 



Figure 4. — \ertical di*>tribution of Verrucaria erichsenii. 



<- 



ahrs 

 enrs 



12hrs 



20hr5 

 24hrs 



Figure 2. — Vertical divlribulion of \'erriuaria degelii. 



Figure 5. — Vertical distribution of Verrucaria maura. 



-I 10m ,- 



Figure 3. — \ertital distribution of Verrucaria ditmarsica. 



Figure 6. — Vertical distribution of Verrucaria micrmpora. 



