Evolution of Pb, Zn, Cu, Ni and As in Arcachon Lagoon (France). Influence of vegetal biomass on the geochemistry of lagoonal environment

The concentration of metals as Pb, Cu, Ni and As in suspended matters and sediments during 14 years shows for suspended matters and sediments that: Zn and Cu are increasing, Pb and As decreasing and Ni is stabilised. The evolution of the suspended matter can be explained by the quantitative evolutio...

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Bibliographic Details
Published in:Journal of marine systems 1992-03, Vol.3 (1-2), p.19-30
Main Authors: Lapaquellerie, Y, Latouche, C, Maillet, N, Dumon, J-C, Carruesco, C
Format: Article
Language:fre
Subjects:
Marine
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Summary:The concentration of metals as Pb, Cu, Ni and As in suspended matters and sediments during 14 years shows for suspended matters and sediments that: Zn and Cu are increasing, Pb and As decreasing and Ni is stabilised. The evolution of the suspended matter can be explained by the quantitative evolution of algae and phanerogams during these last 14 years. The biomass evolution, which resulted in environmental nutrient contribution, intensifies the exchange factors of Pb and As in the lagoon. These remarks, beyond their local interests, provide notions of sedimentary environment model opposed to a polluting environment constituted by nautic tourism and a large area of monoculture (corn).
ISSN:0924-7963
DOI:10.1016/0924-7963(92)90028-7