Distribution of metals in representative biota of Sundarban mangrove wetland, Northeast India.

摘要

This study was conducted to investigate the status of metal concentrations (Pb, Cu, Cr, Cd, Fe and Zn) in the representative biota (bivalves, gastropods and fishes) inhabiting the Sundarban wetland environment (West Bengal, India), and to assess their potential for the biomonitoring of metal contamination. Results indicate the different selectivity of the different bivalve and gastropod organisms on the bioaccumulation of every different metal, as well as on the different organs of the same specimen. Cu, Cd, Zn and Fe showed a high variation among different species and different organs, whereas Cr and Pb showed a lower variability with typical background values, showing no important net uptake by these metals or no Cr and Pb bioavailability. Differences in metal accumulation was also found between the different species of fishes..