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Mar Pollut Bull. 2008 Nov;56(11):1862-70. doi: 10.1016/j.marpolbul.2008.07.018. Epub 2008 Sep 17.

In situ heavy metals (copper, lead and cadmium) in different plankton compartments and suspended particulate matter in two coupled Mediterranean coastal ecosystems (Toulon Bay, France).

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Université du Sud Toulon-Var, Equipe d'Ecologie et de Biologie des Milieux Aquatiques (EBMA), Laboratoire Processus de Transferts et d'Echanges dans l'Environnement (PROTEE), EA 3819, BP 20132-83957 La Garde Cedex, France.


We monitored the concentrations of copper, lead and cadmium in seawater, in suspended particulate matter (SPM) and in bacteria, phyto- and zooplankton communities separated from abiogenic particles, over a one year cycle in two coupled Mediterranean coastal ecosystems (Little Bay (LiB) and Large Bay (LaB)). Metals were present in seawater in the order Cu>Pb>Cd in both bays and showed important variations within the same month than among months. In LiB, their concentrations were between 0.62 and 2.82 microg Cu l(-1), 0.16 and 19 microg Pb l(-1) and 0.007 and 0.14 microg Cd l(-1), respectively, whereas in LaB, they were between 0.23 and 2.11 microg Cu l(-1), 0.09 and 0.76 microg Pb l(-1) and not detected and 0.65 microg Cd l(-1). SPM play an important role on metal adsorption, especially for copper. Bioaccumulation factors showed that bacteria and phytoplankton accumulate metals whereas zooplankton tends to biodiminish them in the plankton food web.

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