Zooplankton in the Schelde estuary, Belgium and The Netherlands. Spatial and temporal patterns |
| |
| Authors: | Tackx, Micky L. M. de Pauw, Nathalie van Mieghem, Riet Azemar, F. Hannouti, Abdelhacq van Damme, Stefan Fiers, Frank Daro, Nanette Meire, Patrick |
| |
| Affiliation: | 1 Laboratoire D’ecologie Des Hydrosytemes (LEH); Universite Toulouse III (Paul Sabatier), BAT 4R3-118, Route De Narbonne, F-31062 Toulouse, Cedex 4, France, 2 Ecology and Systematics Laboratory, Free University of Brussels, Pleinlaan 2, B-1050 Brussels, Belgium, 3 Department of Biology, Ecosystem Management Research Group, University of Antwerp (UIA), Universiteitsplein 1, B-2610 Wilrijk, Belgium and 4 Royal Belgian Institute of Natural History, Vautierstraat 29, B-1000 Brussels, Belgium |
| |
| Abstract: | The zooplankton fauna of the Zeeschelde estuary (Belgium) wasinvestigated over 10 months by means of monthly sampling. CanonicalCorrespondence Analysis (CCA) was used to relate the speciesdistribution to environmental factors. The variation in thespecies data was significantly (P < 0.05) related to a setof 10 environmental variables (chlorinity, NH4+, temperature,PO4-P-, DW, Chl a and Chl b, NO2-N, NO3-N and pH). The mainspatial and seasonal gradients were associated with chlorinityand temperature respectively. The brackish water zone was dominatedby the calanoid Eurytemora affinis in spring, succeeded by Acartiatonsa and mysid species during summer. In the freshwater transect,cyclopoids dominated, together with several cladoceran species.Thermophilic cyclopoid species (Thermocyclops oithonoides, Th.crassus and Mesocyclops leuckarti) occurred during periods ofmaximal temperature. The cyclopoids Acanthocyclops robustus,Paracyclops poppei and Cyclops vicinus, the cladocerans Daphnialongispina, Chydorus sphaericus and Bosmina longirostris togetherwith the numerically dominant rotifers, oligochaetes, nematodesand juvenile copepods seemed little affected by environmentalgradients. |
| |
| Keywords: | |
| 本文献已被 Oxford 等数据库收录！ |
|
