Heavy metals in zooplankton and decapod crustaceans from the Barents Sea

摘要: Trace metals (Cd, Cu, Pb and Zn) were analysed in zooplankton samples decapod crustaceans collected on cruises of "RV Walther Herwig III" to the Barents Sea (Summer 1991, 1994 2000). We found a substantial spatial heterogeneity crustacean Pandalus borealis, with increasing Cd concentrations from south (North Cape Bank; 0.7 mg kg super(- 1) DW) north (north Svalbard; 4.7 1)), supporting hypothesis that frequently reported Cd-anomaly polar might be extended Sea. Regarding various collectives (2000) distinct interspecific was obvious, lowest euphausiids chaetognaths highest ones decapods hyperiid amphipods; Cu copepods decapods; Zn some copepods. For many values below or close limit detection, suggesting about 0.4 serve as regional background value. Results for Cd, this study are largely within range, but high summer contrast lower during winter/spring may related either changing accumulation strategies copepod species involved seasonally absorption food.