HEAVY-METAL CONCENTRATIONS IN SEDIMENTS OF LAKE IOANNINA AND KALAMAS RIVER IN NORTH-WESTERN GREECE

The heavy metal distribution in surface sediments and cores from Pamvo tis Lake (Ioannina) and Kalamas River of North-western Greece over a p eriod of two years was studied. The lake admits mainly municipal and l ight agricultural and industrial wastes. It merges with the river via a narrow channel where the lake water is discharged. The deposited met als and the organic carbon content were determined in sediment samples taken from nineteen stations in the lake and five stations of the riv er. The results suggest ''anthropogenic'' influence at the coasts near the town of Ioannina and at the first station of the Kalamas river.