Journal
MARINE POLLUTION BULLETIN
Volume 177, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2022.113488
Keywords
Polychlorinated biphenyls; Hexachlorobenzene; Polycyclic aromatic hydrocarbons; Arctic fjords; Zooplankton; Bioaccumulation
Funding
- Leading National Research Center (KNOW)
- Institute of Oceanology of the Polish Academy of Sciences [II.2]
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This study examined the concentrations of seven PCBs, HCB, and twelve PAHs in plankton collected from different Arctic fjords. The study found that the concentrations of most contaminants were highest in the zooplankton species Themisto abyssorum, which could be attributed to its predatory feeding strategy. The study also observed significant biomagnification of PCBs and PAHs in zooplankton predator-prey pairs.
Concentrations of seven polychlorinated biphenyls (PCBs), hexachlorobenzene (HCB), and twelve polycyclic aromatic hydrocarbons (PAHs) were examined in plankton collected in summer from different Arctic fjords (Hornsund, Kongsfjorden, Adventfjorden). The levels of all target contaminants in arctic protists have been analyzed for the first time. This is also the first report on PAH levels in arctic fjords zooplankton. Sigma 7 PCB, HCB and Sigma 12 PAH concentrations were up to 3.58 ng/g w.w., 0.28 ng/g w.w. and 249 ng/g w.w., respectively. Among the zooplankton species, the highest concentrations of the most analyzed contaminants were detected in Themisto abyssorum. This could be explained by the predatory feeding strategy of this species. The importance of diet was confirmed by the low concentrations of contaminants detected in the herbivorous copepod Calanus spp. Depending on contaminant, bioaccumulation occurred in 50 to 100% studied cases. Studies have shown significant biomagnification of PCBs and PAHs in zooplankton predator-prey pairs.
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