718 



Marine Microbiology 



No of boot, cells 

 in thousand / m 



iSiw tAn 9A/II I2A/II 



30/vil SA/II 6A/II 9/vil 



TIME IN HOURS 



3A/I1 e,^i9A/ii r4/vii 



Fig. i. Role of bacteria in regeneration of biogens from sediments. 



Thus, the gas conditions of a basin and the number of bio- 

 gens in water were experimentally demonstrated to be governed 

 by microflora activities on the silt-water interface. 



The above stated reasons prove convincingly that microor- 

 ganisms participate most actively in the processes of decomposi- 

 tion and regeneration of organic substance in marine shallow 

 water basins. Microbiological investigations conducted by means 

 of a direct count method help to gain more profound and detailed 

 knowledge of the processes of transformation of organic sub- 

 stance in water basins and to assess their quantitative value. 



REFERENCES 



1. BuTKEViCH, V. S.: On the bacterial population of the Azov and Cas- 



pian Seas (Russian). Microbiology, 7:1005-1022, 1938. 



2. Fedosov, M. v.: Biochemical oxygen consumption by the North Cas- 



pian sediments and their relative regenerative capacity. Papers of the 

 State Hydrological Institute, No. 10 '20, 136-147, 1948. 



3. Fedosov, M. V.: Chemical basis of the Azov Sea nutriment and a fore- 



cast of its changes in connection with hydropower projects on the 

 rivers (Russian). Papers of the Cent. Inst. Marine Fish, ir Ocean- 

 ography (VNIRO), 3i: 35-62, 1955. 



