Bioaccumulation of Contaminants in the Main Links of the Pelagic Trophic Chain at the Romanian Black Sea Coast
DOI:
https://doi.org/10.55268/CM.2018.48.118Keywords:
Black Sea, hazardous substances, biota, pelagic trophic chainAbstract
The paper presents contaminants bioaccumulation and discuss their biomagnification in species belonging to five different trophic levels in the pelagic area of the Romanian Black Sea, namely plankton, 11 species of fish and dolphin.The biomagnification of total polynuclear aromatic hydrocarbons was not observed in the studied trophic chain. The biomagnification process of organochlorine pesticides was observed at trophic level 3 and at trophic level 5, while biomagnification of polychlorinated biphenyls was highlighted at trophic levels 2, 3, and especially 5. Heavy metals, except for nickel, showed significantly higher levels in planktonic organisms, compared to other trophic levels. The biomagnification process of copper, lead, nickel and chromium was observed at trophic level 3, copper and chromium, and trophic level 5, while cadmium biomagnification was not observed.
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