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Trace Metals in Selected Benthic Invertebrates from Belgian Coastal Waters (1981–1996) |
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| Authors: | M Guns P Van Hoeyweghen W Vyncke H Hillewaert |
| Affiliation: | a Ministry of Traders and Agriculture, Veterinary and Agrochemical Research Centre, Leuvensesteenweg 17, B-3080, Tervuren, Belgium b Agricultural Research Centre, Ghent – Sea Fisheries Department, Ankerstraat 1, B-8400, Oostende, Belgium |
| Abstract: | Mercury, cadmium, lead, copper, zinc and chromium were assessed in brown shrimp (Crangon crangon), swimming crab (Liocarcinus holsatus), hermit crab (Pagurus bernhardus), starfish (Asterias rubens) and cut trough shell (Spisula subtruncata) from ten sampling stations off the Belgian coast, including three dredge spoils disposal sites. Calculations of time trends indicated that on the whole concentrations of trace metals had significantly decreased since 1981, also on dredged material dumping sites. Starfish and hermit crab were found to be the most promising benthic indicator species for metal contamination. Globally, the location of the sites, including the dredge spoils disposal zones, showed to be of little influence on the concentrations of trace metals. |
| Keywords: | heavy metals benthos indicator species pollution monitoring dredging |
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