Chemical contamination and sediment toxicity along the coast of Corsica

Type Article
Date 2006-08
Language English
Author(s) Galgani Francois1, 2, Chiffoleau Jean-Francois2, Orsoni Valerie3, Costantini Louis3, Boissery P4, Calendini S5, Andral Bruno6
Affiliation(s) 1 : IFREMER, F-34203 Sete, France.
2 : IFREMER, F-44311 Nantes, France.
3 : IFREMER, F-20600 Bastia, France.
4 : Agence l'Eau RM & C, F-13001 Marseille, France.
5 : Off Environm Corse, F-20250 Corte, France.
6 : IFREMER, F-83507 La Seyne Sur Mer, France.
Source Chemistry and Ecology (0275-7540) (Taylor & Francis), 2006-08 , Vol. 22 , N. 4 , P. 299-312
DOI 10.1080/02757540600812156
WOS© Times Cited 12
Keyword(s) Corsica, Sediment toxicity, Chemical contamination
Abstract Trace metals (Cd, Pb, Cu, Cr, Ni, Co, Zn, Hg, As, Mn, Al, Fe, and Li) and organic compounds (PCBs, PAHs, lindanes, and DDT and its degradation products) were measured in coastal sediment samples from 27 sites in lagoons and along coastal areas of Corsica. An oyster embryo bioassay evaluated the toxicity of sediments from sites in three coastal lagoons (Urbino, Diane, and Biguglia) and the west coast of Cape Corsica. Despite contamination levels generally lower than those in other Mediterranean coastal areas, contamination is found in specific sites in Corsica and includes natural arsenic contamination on the east coast, insecticide pollution (persistent lindane and DDT) in many areas, both cadmium and lead contamination around Sagone, general contamination of both main harbours (Bastia and Ajaccio) and their surrounding areas, and asbestos mining residues in western Cape Corsica. Monitoring development of Crassostrea gigas embryos showed toxic effects at sites near a factory on Cape Corsica, with up to 100% mortality of larvae, and lower levels of toxicity at Sagone (44% mortality) and in the three coastal lagoons (up to 28% mortality). Results of this regional study show the need for further monitoring to understand the environmental issues facing the Corsican coast.
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