^1 IP III IV V VI VII Vlil IX X XI XII 



Fig. 195 Distribution in time of the algal communities on the 

 salt marshes at Canvey and Dovey. I. General Chlorophyceae. II. 

 Marginal diatoms (two components, (A) those with a winter 

 maximum; (B) those with a stimmer maximum). III. Marginal 

 Cyanophyceae. IV. Ulothrix community. V. Enteromorpha minima. 

 VI. Anabaena torulosa. VII. Filamentous diatoms. VIII. Autumn 

 Cyanophyceae. IX. Phormidium autumnale. X. Rivularia- 

 Phaeococcus. XI. Pelvetia canaliculata. XII. Catenella-Bostrychia. 



(After Carter.) 



DOVEY 



CANVEY 



M. Ch. 



VI Vll VIII IX 



Fig. 196 Distribution of the algal commimities in space on the Can- 

 vey and Dovey marshes. Symbols as in Fig. I94- Ar = Armerietum; 

 As = Aster; Esc = Greek bank (escarpment); Fe = U (upper) and 

 L (lower) Festucetum; Hal = Halimionetum ; Ju = Jimcetum; Pu = 

 Puccinellietum; Sal= Salicomietum; M.Ch. = Muddy Channel. 



(After Carter.) 



350 



