Impact of a flood event on the planktonic food web of the Schelde estuary (Belgium) in spring 1998
Muylaert, K.; Vyverman, W. (2006). Impact of a flood event on the planktonic food web of the Schelde estuary (Belgium) in spring 1998. Hydrobiologia 559(1): 385-394. dx.doi.org/10.1007/s10750-005-1081-9
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, more
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| Keywords |
Aquatic communities > Plankton > Phytoplankton
Aquatic communities > Plankton > Zooplankton
Environments > Aquatic environment > Marine environment > Intertidal environment
Flooding
Food webs
Belgium, Zeeschelde [Marine Regions]
Brackish water; Fresh water |
| Author keywords |
freshet; phytoplankton; zooplankton; microbial food web; river; freshwater tidal estuary |
| Abstract |
To evaluate the effect of short-term changes in discharge on plankton dynamics, a station in the upper reaches of the Schelde estuary was monitored during 1 month in spring 1998 with a sampling frequency of 1-2 days. During this monitoring period, a flood event occurred during which discharge increased about 5-fold. This flood event had a strong effect on the composition of the planktonic community. Rotifers were strongly negatively affected by the flood event while densities of heterotrophic nanoflagellates and scuticociliates increased. Chlorophyll a concentration and abundance of bacteria, oligotrich ciliates and crustacean zooplankton did not respond clearly to the flood event. Although the flood event lasted only a few days it took more than 2 weeks for the planktonic community to return to its original composition. |
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