Feasibilities and Limits of Field Experiments to Study Ecological Implications of Heavy Metal Pollution

  • René Gächter
  • Jacques Urech
Part of the NATO Conference Series book series (NATOCS, volume 6)


Elevated metal concentrations in recent sediments indicate strongly that, during recent decades, heavy metal pollution of aquatic systems has increased practically all over the world. In spite of this, only a few cases of obviously adverse perturbations of aquatic populations have been reported. Nevertheless, it would be incorrect to conclude from this that widespread heavy metal pollution will be without effect on aquatic organisms. It must rather be assumed that changes in these ecosystems have evaded detection because of a lack of comparable unpolluted control systems or because such changes could not be related to increased heavy metal loadings for the reason that contamination with other substances changed simultaneously.


Heavy Metal Metal Concentration Heavy Metal Concentration Chlorophyll Concentration Heavy Metal Pollution 
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Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • René Gächter
    • 1
  • Jacques Urech
    • 1
  1. 1.Control (EAWAG)Federal Institute for Water Resources and Water PollutionDübendorfSwitzerland

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