CHEMOMETRICAL APPROACHES TO EVALUATE ANALYTICAL DATA FROM AQUATIC MACROPHYTES AND MARINE-ALGAE

The possibility of using aquatic macrophytes and algae as bioindicator s of water pollution is investigated. The use of cluster analysis enab les the treatment of the analytical data in a global way, revealing hi dden clusters of similar behaviour between various biological species or sampling sites. A great number of species was collected from four r ivers and fourteen coastal sites in Greece and were analysed for zinc, copper, cadmium, lead and manganese. The analytical data obtained wer e treated by hierarchical clustering, for marine algae and aquatic mac rophytes separately.