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Zooplankton in the Schelde estuary, Belgium and The Netherlands. Spatial and temporal patterns

Tackx, Micky and De Pauw, Nathalie and Van Mieghem, Riet and Azémar, Frédéric and Hannouti, Abdelhacq and Van Damme, Stefan and Fiers, Franck and Daro, Nanette and Meire, Patrick Zooplankton in the Schelde estuary, Belgium and The Netherlands. Spatial and temporal patterns. (2004) Journal of Plankton Research, 26 (2). 133-141. ISSN 0142-7873

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Official URL: http://dx.doi.org/10.1093/plankt/fbh016

Abstract

The zooplankton fauna of the Zeeschelde estuary (Belgium) was investigated over 10 months by means of monthly sampling. Canonical Correspondence Analysis (CCA) was used to relate the species distribution to environmental factors. The variation in the species data was significantly (P < 0.05) related to a set of 10 environmental variables (chlorinity, NH4 +, temperature, PO4-P-, DW, Chl a and Chl b, NO2-N, NO3-N and pH). The main spatial and seasonal gradients were associated with chlorinity and temperature respectively. The brackish water zone was dominated by the calanoid Eurytemora affinis in spring, succeeded by Acartia tonsa 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 of maximal temperature. The cyclopoids Acanthocyclops robustus, Paracyclops poppei and Cyclops vicinus, the cladocerans Daphnia longispina, Chydorus sphaericus and Bosmina longirostris together with the numerically dominant rotifers, oligochaetes, nematodes and juvenile copepods seemed little affected by environmental gradients.

Item Type:Article
Additional Information:Thanks to Oxford University Press editor. The original PDF of the article can be found at Journal of Plankton Research website : http://plankt.oxfordjournals.org/
HAL Id:hal-00994330
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Institut royal des Sciences naturelles de Belgique - IRSNB (BELGIUM)
Other partners > Universiteit Antwerpen - UA (BELGIUM)
Other partners > Vrije Universiteit Brussel - VUB (BELGIUM)
Laboratory name:
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Deposited By: Frédéric Azémar
Deposited On:21 May 2014 10:56

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