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Zooplankton biomass in the Oosterschelde (SW Netherlands) before, during and after the construction of a storm-surge barrier Bakker, C.; Van Rijswijk, P. (1994). Zooplankton biomass in the Oosterschelde (SW Netherlands) before, during and after the construction of a storm-surge barrier, in: Nienhuis, P.H. et al. The Oosterschelde Estuary (The Netherlands): A case-study of a changing ecosystem. Developments in Hydrobiology, 97: pp. 127-143. https://dx.doi.org/10.1007/978-94-011-1174-4_11 In: Nienhuis, P.H.; Smaal, A.C. (Ed.) (1994). The Oosterschelde Estuary (The Netherlands): A case-study of a changing ecosystem. Developments in Hydrobiology, 97. Springer Science+Business Media: Dordrecht. ISBN 978-94-010-4512-4; e-ISBN 978-94-011-1174-4. XXIV, 597 pp. https://dx.doi.org/10.1007/978-94-011-1174-4, meer In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, meer Is gerelateerd aan: Bakker, C.; Van Rijswijk, P. (1994). Zooplankton biomass in the Oosterschelde (SW Netherlands) before, during and after the construction of a storm-surge barrier. Hydrobiologia 282: 127-143. https://dx.doi.org/10.1007/BF00024626, meer

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Trefwoorden

Abundance Aquatic communities > Plankton > Phytoplankton Arthropods > Crustacea > Copepoda > Calanoida > Temoridae > Temora Retention time Copepoda [WoRMS]; Pleurobrachia Fleming, 1822 [WoRMS]; Pleurobrachia pileus (O. F. Müller, 1776) [WoRMS]; Temora longicornis (Müller O.F., 1785) [WoRMS] ANE, Nederland, Oosterschelde [Marine Regions] Marien/Kust; Brak water

Author keywords

Copepods; Zooplankton biomass; Bayes; Eastern scheldt; Pleurobrachia; Benthic larvae; Southern north-sea; Seston food quality; Nova-scotia; Ctenophore pleurobrachia-pileus; Continuous plankton records; Temora-longicornis; Bed sediments; Estuary; Estuarium

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Auteurs		Top
Bakker, C. Van Rijswijk, P., meer

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Abstract

The hydrodynamic consequences of large coastal engineering (barrier-construction) works in the Oosterschelde were: prolonged residence times of the water, increased sinking of particulate material, and higher water transparencies. This strongly influenced the phytoplankton (Bakker et al., 1990; 1994) and phytoplankton biomass increased in the shallow Eastern compartment of the Oosterschelde (Bakker & Vink, 1994) while phytoplankton concentration of the seston rose. Zooplankton biomass, especially of copepods (Temora) and meroplankton (barnacle larvae) increased during the post-barrier period in the Eastern compartment. It is hypothesized that this is caused by the improved feeding conditions and the increased retention times in this area. The barrier years 1985 and 1986 were characterized by low current velocities. In the Eastern compartment, this may have favoured the development of the rotifer Synchaeta (Bakker, 1994) and of the important copepod predator Pleurobrachia (Ctenophora). In the Western compartment, zooplankton developments in the post-barrier years were rather similar to those in the pre-barrier period. This led to the disappearance of the previously existing biomass gradients West-East (maxima in West). At present a trend in the opposite direction (maxima in East) is observed.

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