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Journal Article

Rotifer population dynamics in response to increased bacterial biomass and nutrients: a mesocosm experiment

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Hofmann,  Wolfgang
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Höfle,  Manfred G.
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Citation

Hofmann, W., & Höfle, M. G. (1993). Rotifer population dynamics in response to increased bacterial biomass and nutrients: a mesocosm experiment. Rotifer Symposium 6, 171-175.


Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-E401-C
Abstract
The impact of organic nutrients and massive addition of bacteria was followed in lake water mesocosms in a eutrophic lake. Increased DOM initiated a sequence of trophic responses indicated by rapid increases in bacterioplankton, protozoa, and algal biomass. The populations of Keratella cochlearis and Keratella quadrata showed a distinct response by rapid increase in birth rate followed by maxima of production and abundance. This succession clearly reflected the trophic position of these rotifer populations in the food chain. A reverse response was observed in Conochilus unicornis.