TABLE 5 



Variations of primary (Pi. bacterial production (B,,) and P/B,, coefficient in ecotoxicological e.xperiments. 



TABLE 6 



Variation.s of Primary (P) and bacterial production (Bj,) and P/B, coefficient in ecotoxicological experiments. 



Values of primary (P) and bacterial production (B ) in mg C/mVday. 



TABLE 7 



The values of "critical"" concentrations of some pollutants in the 

 Bering Sea ecosystem. 



Pollutant 



Critical concentrations* |ig/l 



Primary Bacterio- Plankton 



Production Infusoria plankton (P/B,) 



TABLE 8 



The values of critical concentrations of some pollutants in the 

 Chukchi Sea ecosystem. 



Pollutant 



Critical concentrations* |ig/l 



Primary Bacterio- Plankton 



Production Infusoria plankton (P/B,) 



BaP 



PCBs 



Cu 



Cd 



10.0 



50.0 



3 - 20 



15 -60 



0.05 



1 -3 



* Above the fraction bar - the range of variation for the critical 

 concentrations of pollutants; below the fraction bar - the average 

 values. 



BaP 



PCBs 



Cu 



Cd 



35 



60 



0.05 



50 



* Above the fraction bar - the range of variation for the critical 

 concentrations of pollutants; below the fraction bar - the average 

 values. 



363 



