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Fine sediments in the Oosterschelde tidal basin before and after partial closure
ten Brinke, W.B.M.; Dronkers, J. (1994). Fine sediments in the Oosterschelde tidal basin before and after partial closure, in: Nienhuis, P.H. et al. (Ed.) The Oosterschelde Estuary (The Netherlands): a case-study of a changing ecosystem. Hydrobiologia, 97: pp. 41-56
In: Nienhuis, P.H.; Smaal, A.C. (Ed.) (1994). The Oosterschelde Estuary (The Netherlands): a case-study of a changing ecosystem. Reprinted from Hydrobiologia, vols 282/283. Hydrobiologia, 97. Kluwer Academic: Dordrecht. 597 pp., more
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158, more
Peer reviewed article  

Also published as
  • ten Brinke, W.B.M.; Dronkers, J. (1994). Fine sediments in the Oosterschelde tidal basin before and after partial closure. Hydrobiologia 282-283(1): 41-56. hdl.handle.net/10.1007/BF00024620, more

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Keywords
    Seston; Mytilus edulis Linnaeus, 1758 [WoRMS]; ANE, Netherlands, Oosterschelde [Marine Regions]; Marine; Brackish water
Author keywords
    Bayes; Budget; Eastern scheldt; Mytilus-edulis; Fine sediments; Changes; Estuary; Estuarium

Authors  Top 
  • ten Brinke, W.B.M.
  • Dronkers, J., more

Abstract
    Changes in the budget of fine sediments in the Oosterschelde have been measured. These are related to the partial closure of the tidal basin. Before the engineering works, soil texture of most of the basin was sandy. After the works, unconsolidated fine sediments occurred at several locations throughout the Oosterschelde, mainly in the deeper parts of channels and on musselbeds. Fine sediments accumulate due to the reduction in current velocities. Most of the fine sediment comes from the North Sea; internal sources of fine sediments (primary production and erosion of intertidal flats) are of minor importance. Due to the works, the direction of net transport of fine sediments has changed from an export (before the works) into an import. A qualitative discussion of the underlying processes is presented. The changes in the budget of fine sediments have both positive and negative ecological consequences. Muddy deposits on dike slopes have reduced hard bottom macrozoobenthos. The reduced nutrients input due to reduced fresh water input has not resulted in a reduced primary production because it is counter-balanced by a decrease in turbidity.

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