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Processes Affecting the Distribution of Trace Metals in Kalloni Bay, Island of Lesvos, Greece
A.M. Gavriil, M.O. Angelidis, and A. Aloupi

The concentrations of Fe, Mn, Ni and Pb in dissolved and particulate form were determined seasonally – from October 1999 to September 2000 – in four different sites of Kalloni Bay, island of Lesvos. The seasonal and spatial variations in metal concentrations show that the fluvial transport is the major pathway in to the bay for Fe and Ni while the wet deposition during winter probably determines the distribution of Pb. Manganese distribution appears to be regulated by diagenetic processes in the sediment, leading thus to Mn release in the overlying water column. Dissolved phase is the major metal carrier for Ni and Pb, while Fe and Mn are mainly transported in the particulate phase. Significant spatial variations in metal partitioning were observed only for Ni.

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