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Concentrations of Fe, Cu, Pb, Zn, Cd and Ni were determined in the red alga Corallina officinalis (Linnaeus, 1758), the green alga Ulva lactuca (Linnaeus, 1753) and sediment sampled in four stations of the coastline of Honaïne (extreme Western Algeria). The abundance of metal concentrations in algae and sediment samples, is in the following order: Fe > Zn > Pb > Ni > Cu > Cd. The schematic representation by PCA reflects a strong correlation of the corallina with Cd and Pb, the ulva with Zn and Ni and sediment with Cu and Fe, in addition, to homogeneity of rehearsals in each matrix. The results of this study validate the use of these species as reliable tools for biomonitoring of metal pollution of coastal ecosystems, even if the levels of heavy metals in sediment and algae from the coastline of Honaïne are in general, very low compared with those from other geographic areas and by guidelines.

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