78 7% 



r $7° /o 



Diatomeae 

 Dinoflagellatae 



Silicoflageilatae 

 Zooplankton 



Fig. 198a. Quantitative correlation of main plankton 



groups in Black Sea in Batumi area in September, 



according to the number of specimens (Morozova- 



Wodjanitzkaja, 1948). 



8400 



8100 \ 



7800 



7500 



7200 



6900 



6600 



6300 



6000 



5700 



5400 



5/00 



4800 



4-600 



4200 



3900 



3600 



3300 



3000 



Z700 



2400 



2100 



1800 



/500 



1200 



900 



600 



300 • 



TOTAL 

 PHYTOPLANKTOh 

 BIOMASS 



DIATOM 

 BIOMASS 



Feb. March Apr. May June J u | y Aug 

 EARLY SPRING SUMMER 

 SPRING 



Oct. Nov Dec. Jan. 

 LATE WINTER 

 AUTUMN 

 I938 " I939 



Fig. 198b. Annual alterations in diatom and Dinoflagellata 

 biomass in Sevastopol area(Morozova-Wodjanitzkaja, 1948). 



