Fig. 210. Chart of distribution of bottom biocoenoses in Black Sea, Sebastopol 

 region (Zernov, 1912). 1 Biocoenosis populating cliffs overgrown with Cystoseira, 

 with some patches of sand ; 2 Biocoenosis populating cliff sand and gravel and very fine 

 shell gravel ; 3 Biocoenosis populating Zostera and water- weed beds ; 4 Biocoenosis 

 living on oyster banks ; 5 Mussel mud biocoenosis ; 6 Phaseolin ooze biocoenosis. 



Fig. 211. Distribution of bottom biocoenoses in the northern part of Black Sea. 

 1 Coastal sand and cliff biocoenoses ; 2 Shell gravel biocoenoses ; 3 Biocoenosis of 

 Zostera growths ; 4 Mussel mud biocoenosis ; 5 Phyllophora growth biocoenosis ; 

 6 Biocoenosis of dead Zostera out by the Sea ; 7 Phaseolin ooze biocoenosis ; 8 Bio- 

 coenosis of Terebellide ooze; 9 Limit of life (Zernov, 1912). 



