Pollution of the coastal waters in the Possyet Bay (Peter the Great Bay, Japan Sea) in conditions of current economic activity

Impact of economic activity on environment quality is assessed for the coastal waters of the Possyet Bay (Peter the Great Bay, Japan Sea). Total volume of the sewage water discharged from coastal sources to the bay and total amount of principal pollutants wasting this water body are calculated. Specific index of sewage for the Possyet Bay is estimated as 0.081 g/m3 that is rather high value. Distribution of petroleum hydrocarbons in the coastal waters is considered: their concentration ranges from 0.025 to 0.065 mg/L. Following to biotesting results, the worst water quality is in the Reid Pallada Bay where the highest inhibitory effect on the byssus thread formation of mussel Crenomytilus grayanus is observed.