Original paper

Regulation of the abundance and growth of ciliates in a newly-flooded reservoir

Thouvenot, A. Richardot

Abstract

The specific growth rates of ciliates were measured in diffusion chambers after the first flooding of a reservoir. The abundance of nanoplankton and the high concentrations of dissolved organic matter could explain why the growth rate, whose average value was 0.07 ± 0.06h-1, was higher than that recorded in other lakes of similar trophic status. The abundance of ciliates was strongly controlled by Daphnia longispina and Asplanchna priodonta.

Keywords

growth ratesdiffusion chambersdissolved organic matteraquatic ecosystems.