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Trace metal concentrations in mussels: comparison between estuarine, coastal and offshore regions in the southeastern North Sea from 1983 to 1986
Borchardt, T.; Burchert, S.; Hablizel, H.; Karbe, L.; Zeitner, R. (1988). Trace metal concentrations in mussels: comparison between estuarine, coastal and offshore regions in the southeastern North Sea from 1983 to 1986. Mar. Ecol. Prog. Ser. 42(1): 17-31
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Trefwoorden
    Biological phenomena > Accumulation > Bioaccumulation
    Chemical elements > Metals > Heavy metals > Cadmium
    Chemical elements > Metals > Heavy metals > Zinc
    Chemical elements > Metals > Transition elements > Heavy metals > Copper
    Chemical elements > Metals > Transition elements > Heavy metals > Silver
    Coastal zone
    Mercury
    Pollution effects
    Trace elements > Trace metals
    Mytilus edulis Linnaeus, 1758 [WoRMS]; Pagurus bernhardus (Linnaeus, 1758) [WoRMS]
    Marien; Brak water

Auteurs  Top 
  • Borchardt, T.
  • Burchert, S.
  • Hablizel, H.
  • Karbe, L.
  • Zeitner, R.

Abstract
    The blue mussel Mytilus edulis was used for monitoring trace metal contamination in the southeastern North Sea. Metal concentrations in mussels from the estuaries of Ems, Jade and Elbe were compared with those from the inner German Bight, from a region off southern Jylland, and the open sea. In some cases, M. edulis from offshore areas contained metal concentrations as high as specimens from the estuaries. It is suggested that the unexpected high cadmium and lead levels in mussels from the central North Sea are due to (1) changes in trace metal speciation--an increasing bioavailability counteracts declining concentrations in seawater towards the open sea; (2) the pattern of residual currents--a great part of the pollutants brought into the sea around the British Isles settles and accumulates in the central North Sea; (3) oxygen deficiencies--in certain regions this leads to pronounced changes in redox conditions in sediments, thus allowing remobilisation.

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