bioaccumulation

In the present study, the authors demonstrate the accumulation of heavy metals in water and soft tissues of bivalve mollusks (Dreissena polymorpha, Dreissena bugensis) in the Kakhovka Main Canal within the Kherson and Zaporizhzhia regions (Ukraine) in the summer season (July–August 2018). The average metal concentrations in water decrease in the following order: Ni>Zn>Cr>Co>Cu>Cd.

The system of quality categories, integrated and single indicators was created for the marine ecosystem under the impact of oil production. On the basis of the integral differential approach, a significant and moderate degree of influence has been substantiated for the stages of drilling the well and extracting oil, as well as an insignificant impact for seismic exploration and decommissioning.