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Trends in pollutants in blue mussel Mytilus edulis and flounder Platichys flesus from two Dutch estuaries, 1985-1990
Stronkhorst, J. (1992). Trends in pollutants in blue mussel Mytilus edulis and flounder Platichys flesus from two Dutch estuaries, 1985-1990. Mar. Pollut. Bull. 24(5): 250-258
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X, more
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    Marine

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  • Stronkhorst, J., more

Abstract
    Temporal trends and length-concetration relationships are presented for data from the Joint Monitoring Programme for microcontaminants in the blue mussel Mytilus edulis and flounder Platichthys flesus from the Ems Dollard and Western Scheldt estuaries in the Netherlands over the period 1985 to 1990. Statistical analyses were carried out in conformity with ICES procedures.The analyses show only a decrease in levels of dieldrin in mussels from the Western Scheldt. Cadmium concentrations in flounders from the Ems Dollard have increased. No linear trend has been detected in either estuary for the other contaminants (PCB, PAH, pp'DDE, lindane, Hg, As, Cu, Cr, Zn, Pb, Ni). The importance of taking the fat weight into account in analysing PCB trend and length relationship is illustrated.Concentrations of PCB, PAH, chromium and nickel in mussels and PCB in livers of flounders decrease with increasing size. Mercury concentrations in flounders increase with length.

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