English Abstract Since 1987 a fortnightly sampling programme has been
carried out at Lobith and Maassluis to record seasonal development of
plankton communities in the lower river Rhine. Furthermore, the development
of phyto- and zooplankton was recorded in a water parcel during its
transport from Bad Honnef, Germany, to the sedimentation areas Ketelmeer,
Nieuwe Waterweg and Hollands Diep in the Netherlands. This "Fliessende
Welle" - inventory was carried out five times in 1988 (April-August) to
discriminate phases of development of plankton communities along the
longitudinal axis of the river Rhine. This report composes the results
obtained with both sampling strategies and evaluates the representativeness
of the stations Lobith and Maassluis for long-term monitoring of
planktoncommunities in the lower river Rhine. A summary (Stations, sampling
methods, parameters and results) of the "Fliessende Welle" - inventory is
included under cover.
