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Zur Frage der Karpfenintensivbewirtschaftung von Seen und Eutrophierung

Zur Frage der Karpfenintensivbewirtschaftung von Seen und Eutrophierung Normally, carp rearing at medium densities is connected with the promotion of daphnia and filtration effects up to “clear‐water states”. Therefore and because of the reduction of submerged plants and of the periphyton this form of carp rearing should be possible in eutrophic shallow lakes also at a slight nutrient introduction without any considerable eutrophication. Due to a deterioration of the light climate by re‐suspension of the sediment even reductions of the primary production are possible. In the case of the Galenbeck lake a drastic reduction of submerged macrophytes occurred in connection with an increased development of plankton, only general estimations being available of the shares of macrophytes and phytoplankton in the overall production. The phytoplankton increase is are perhaps caused by the absence of filtrating zooplankton due to an insufficient reduction of the indigenous fish stocks. In the Galenbeck lake the structural changes of the ecosystem were due both to the high degree of re‐suspension of the very mobile lime sediment and the absence of hard bottom areas, which made the total reduction of the macroflora possible. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta hydrochimica et hydrobiologica Wiley

Zur Frage der Karpfenintensivbewirtschaftung von Seen und Eutrophierung

Barthelmes, D.
Acta hydrochimica et hydrobiologica , Volume 12 (2) – Jan 1, 1984
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References (4)

Publisher
Wiley
Copyright
Copyright © 1984 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0323-4320
eISSN
1521-401X
DOI
10.1002/aheh.19840120209
Publisher site
See Article on Publisher Site

Abstract

Normally, carp rearing at medium densities is connected with the promotion of daphnia and filtration effects up to “clear‐water states”. Therefore and because of the reduction of submerged plants and of the periphyton this form of carp rearing should be possible in eutrophic shallow lakes also at a slight nutrient introduction without any considerable eutrophication. Due to a deterioration of the light climate by re‐suspension of the sediment even reductions of the primary production are possible. In the case of the Galenbeck lake a drastic reduction of submerged macrophytes occurred in connection with an increased development of plankton, only general estimations being available of the shares of macrophytes and phytoplankton in the overall production. The phytoplankton increase is are perhaps caused by the absence of filtrating zooplankton due to an insufficient reduction of the indigenous fish stocks. In the Galenbeck lake the structural changes of the ecosystem were due both to the high degree of re‐suspension of the very mobile lime sediment and the absence of hard bottom areas, which made the total reduction of the macroflora possible.

Journal

Acta hydrochimica et hydrobiologica – Wiley

Published: Jan 1, 1984

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