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The influence of artificial stream bottom siltation on Ephemeroptera in emergence traps

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons56984

Wagner,  Rüdiger
Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Zitation

Wagner, R. (1989). The influence of artificial stream bottom siltation on Ephemeroptera in emergence traps. Archiv für Hydrobiologie, 115(1), 71-80.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-CA65-D
Zusammenfassung
The influence of artificial stream bottom siltation on the may fly biocenosis in the Breitenbach stream, near Schlitz, West Germany, was studied in an in situ experiment. In an artificially-silted emergence trap, numbers of Baetis vernus and Baetis rhodani fell to 16 % and 1 %, respectively of numbers in non-silted conditions. There were marked increases of specimen numbers, however, in the case of Paraleptophlebia submarginata, Centroptilum luteolum, and Habrophlebia lauta in silted conditions. There were interspecific differences in behaviour on individual sediment fractions. Overall, biomass in the silted area was only 8-50% of that in the control area.