Microbial activity in sandy and muddy estuarine sediments |
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| Authors: | M Elskens M Leermakers S Panutrakul F Monteny W Baeyens |
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| Institution: | (1) Laboratorium voor Analytische Scheikunde en Geochimie, University of Brussels, Pleinlaan 2, B-1050 Bruxelles, Belgium |
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| Abstract: | Striking differences were observed in the use of the electron acceptors involved in the degradation of organic matter by heterotrophic
bacterial activity between a muddy and a sandy sediment on the same tidal flat of the Scheldt estuary. These bio-reduction
reactions could have a quite different effect on the cycling of trace metals in the sediment as suggested by the results of
the mobilization experiments. Trace metal speciation can be described as a function of the redox potential, in view of the
fact that the latter is related to the heterotrophic bacterial activity. |
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