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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Zooplankton distribution across the brackish and freshwater zone of the Scheldt estuary Azémar, F.; Fiers, F.; Tackx, M. (2002). Zooplankton distribution across the brackish and freshwater zone of the Scheldt estuary, in: ECSA Local Meeting: ecological structures and functions in the Scheldt Estuary: from past to future, Antwerp, Belgium October 7-10, 2002: abstract book. pp. 70 In: (2002). ECSA Local Meeting: Ecological structures and functions in the Scheldt Estuary: from past to future, Antwerp, Belgium October 7-10, 2002: abstract book. University of Antwerp: Antwerp. 73 + 1 cd-rom pp., meer Is gerelateerd aan: Azémar, F.; Fiers, F.; Tackx, M. (2004). Zooplankton distribution across the brackish and freshwater zone of the Scheldt estuary, in: Mees, J. et al. (Ed.) VLIZ Young Scientists' Day, Brugge, Belgium 5 March 2004: book of abstracts. VLIZ Special Publication, 17: pp. 33, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 280681 [ download pdf ]
Documenttype: Samenvatting

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Trefwoorden

Abundance Aquatic communities > Plankton > Zooplankton Distribution Species diversity Water > Brackish water Water > Fresh water Acanthocyclops robustus (Sars G.O., 1863) [WoRMS]; Acartia tonsa Dana, 1849-1852 [WoRMS]; Brachionus calyciflorus Pallas, 1766 [WoRMS]; Calanoida [WoRMS]; Cyclopidae Rafinesque, 1815 [WoRMS]; Eurytemora affinis (Poppe, 1880) [WoRMS]; Rotifera [WoRMS] België, Schelde R. [Marine Regions]

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Auteurs		Top
Azémar, F., meer Fiers, F., meer Tackx, M., meer

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Abstract

Zooplankton diversity and distribution in the brackish and freshwater zone of the Scheldt is studied, as a continuation of preceeding studies carried out in the periods 1967-1669 and 1995-1997. We report on species diversity and abundancy of the zooplankters, collected on a monthly basis, in 20 sampling sites along the salinity gradient. Calanoids occur mainly in the brackish part, with Eurytemora affinis, Acartia tonsa and Eudiaptomus gracilis as the dominant species. In the freshwater region, rotifers (i.e. Brachionus calyciflorus, Keratella quadrata, among others), cyclopids (i.e. Acanthocyclops robustus, Cyclops vicinus) and cladocerans (Daphnia longispina, Bosmina longirostris...) are the dominant zooplankters. In addition, we report the presence of several species which were not detected in the former studies, such as the rotifers Brachionus leydigi var. quadratus, Notholca labis, Platyias quadricornis, Euchlanis dilatata, Gastropus hyptopus, Testudinella patina, Polyarthra dolichoptera and Trichotria sp. ; the cladocerans Acroperus harpae and Biapertura affinis, and the harparticoid Bryocamptus (Bryocamptus) minutus.

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