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Ostracoda (Crustacea) and trichoptera (Insecta) from Late-and Postglacial sediments of some European maar lakes

  • Burkhard W. Scharf
Palaeobiology
Part of the Lecture Notes in Earth Sciences book series (LNEARTH, volume 49)

Abstract

The investigation of the living and sub-fossil ostracods from the maar lakes in the Eifel region (Germany) and from the Lac du Bouchet (Auvergne, France) is summarized. During the Late-Glacial the number of ostracod species increased e.g. in Lake Meerfelder Maar from 3 to 9. Among the 3 species Cytherissa lacustris dominated, an indice of an oligotrophic state. The later immigrated species are characteristic for an mesotrophic lake with tendency to eutrophic state. In the post-glacial sediment no shells could be found. From actuogeological studies can be concluded that the ostracod shells are decalcified, a consequence of the eutrophic state of the lakes. The ostracod shells are better preserved in lakes with a high content of calcium than in these lakes with a low calcium concentration.

In the post-glacial sediment of Lake Meerfelder Maar (Eifel) some cases of the Trichoptera Orthotrichia costalis cf. could be found. Examples are presented by figures. The finding confirms the eutrophic state of Lake Meerfelder Maar since the Atlantic.

Keywords

Faunal Remains Mesotrophic Lake Ostracod Species Ostracod Shell Maar Lake 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • Burkhard W. Scharf
    • 1
  1. 1.GKSS-Institut für GewässerforschungMagdeburgGermany

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