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Distribution and abundance of shallow water hyperbenthic mysids (Crustacea, Mysidacea), and euphausiids (Crustacea, Euphausiacea), in the Voordelta and the Westerschelde, southwest Netherlands
Mees, J.; Cattrijsse, A.; Hamerlynck, O. (1993). Distribution and abundance of shallow water hyperbenthic mysids (Crustacea, Mysidacea), and euphausiids (Crustacea, Euphausiacea), in the Voordelta and the Westerschelde, southwest Netherlands. Cah. Biol. Mar. 34(2): 165-186
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094
Peer reviewed article  
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Keyword
    Marine/Coastal
Authors  Top 
  • Mees, J., more
  • Cattrijsse, A.
  • Hamerlynck, O., more
Abstract
    The hyperbenthic mysids and euphausiids of the subtidal shallow coastal waters (the Voordelta) and the Westerschelde estuary in the Delta area (SW Netherlands) were regularly sampled between 1988 and 1991. Two salt marshes in the brackish part of the estuary were studied in the same period. Eight mysid species and one euphausiid species were identified. The spatial and seasonal distribution patterns of all species are described. The most abundant species in the coastal area is Schistomysis spiritus, followed by Mesopodopsis slabberi, Schistomysis kervillei, and Gastrosaccus spinifer. In the marine part of the Westerschelde the same four species are dominant but densities are generally higher in the coastal area. Only Siriella armata and the euphausiid Nyctiphanes couchi never enter the estuary. Higher mysid densities, mainly M. slabberi and the estuarine endemic Neomysis integer, are found in the brackish part of the Westerschelde. Praunus flexuosus is a euryhaline species with a preference for the intertidal areas. The estuarine populations of N. integer, M. slabberi, P. flexuosus, and -to a lesser extent- S. spiritus seem to utilise the salt marshes during periods of reproduction.
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