Significance and interspecific variability of accumulated trace metal concentrations in Antarctic benthic polychaetes.

Trace metals were analysed in polychaetes collected on Polarstern cruise ANT XXI/2 (2003/04) to the Weddell Sea. Pb concentrations were largely less than 1.3 mg kg(-1)DW in all samples analysed.

Trace metal concentrations in Antarctic sea spiders (Pycnogonida, Pantopoda).

Trace metals were analysed in sea spiders collected on two Polarstern cruises in the Weddell Sea. We found a substantial interspecific heterogeneity of Cd, Cu, Ni, and Zn, indicating varying accumulation strategies and metabolic demands for essential elements. Means and 95%-confidence intervals for all 44 samples analysed are 26+/-7 mg Cd kg(-1), 38+/-22 mg Cu kg(-1), 62+/-13 mg Ni kg(-1) and 990+/-130 mg Zn kg(-1) DW.

Bioaccumulation of trace metals in the brown shrimp Crangon crangon (Linnaeus, 1758) from the German Wadden Sea.

The objective of the present study is to evaluate the suitability of the brown shrimp Crangon crangon (Linnaeus, 1758) from the German Wadden Sea as a biomonitor for the trace metals Cd, Pb, Cu, and Zn and to analyse whether the two-compartment model sensu OECD could be used as a predictive tool to assess environmental quality. The tested decapods accumulated Cd and Pb upon exposure and it was possible to estimate significant model parameters of two-compartment models, while they did not respond to waterborn Cu and Zn. Kinetic BCFs at theoretical equilibrium were 860 for Cd and 750 for Pb.

Heavy metals in zooplankton and decapod crustaceans from the Barents Sea.

Trace metals (Cd, Cu, Pb and Zn) were analysed in zooplankton samples and decapod crustaceans collected on cruises of "RV Walther Herwig III" to the Barents Sea (Summer 1991, 1994 and 2000). We found a substantial spatial heterogeneity in the decapod crustacean Pandalus borealis, with increasing Cd concentrations from the south (North Cape Bank; 0.7 mg kg(-1) DW) to the north (north of Svalbard; 4.

Assessment of two-compartment models as predictive tools for the bioaccumulation of trace metals in the amphipod Gammarus oceanicus Segerstråle, 1947 from Grunnfjord (Northern Norway).

The objective of the present study is to evaluate the suitability of the eulittoral gammaridean amphipod Gammarus oceanicus Segerstråle, 1947 from Grunnfjord (Northern Norway) as a biomonitor for trace metals Cd, Cr, Pb, Cu, Ni and Zn and to analyse whether the two-compartment model could be used as a predictive tool to assess environmental quality. The focus here is on the adjustment of this model to situations where a linear extrapolation of accumulated metals to increasing external metal exposures is not applicable. The amphipods tested accumulated metals upon exposure and it was possible to estimate significant model parameters of two-compartment models, with the sole exception of Zn.