Main Content

The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 1682

Wolfgang Hofmann and Manfred G. Hofle; Rotifer population dynamics in response to increased bacterial biomass and nutrients: a mesocosm experiment. Hydrobiologia 255/256:171-175, 1993

Reprint

In File

Notes

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.