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Functional guilds of fishes and macrocrustaceans in the Westerschelde and Oosterschelde estuary
Hostens, K.; Mees, J.; Cattrijsse, A.; Hamerlynck, O. (2002). Functional guilds of fishes and macrocrustaceans in the Westerschelde and Oosterschelde 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. 52
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.
Available in  Authors 
    Vlaams Instituut voor de Zee: Open access 280673 [ download pdf ]
Document type: Summary
Keywords
    Cycles > Life cycle
    Fauna > Aquatic organisms > Aquatic animals > Fish > Estuarine organisms > Brackishwater fish
    Fauna > Aquatic organisms > Aquatic animals > Shellfish
    Food webs
    Habitat > Biotopes
    Habitat selection
    Nursery grounds
    Spawning grounds
    Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries
    ANE, Netherlands, Oosterschelde [Marine Regions]; ANE, Netherlands, Westerschelde [Marine Regions]
Authors  Top 
  • Hostens, K.
  • Mees, J.
  • Cattrijsse, A.
  • Hamerlynck, O.
Abstract
    Several subhabitats (e.g. intertidal and subtidal soft substratum or saltmarsh creeks) have been defined within the estuarine reaches of the Westerschelde and the Oosterschelde. This complex system can serve as spawning ground, nursery area, feeding ground and as a pathway in diadromous migrations. This study concentrated on the significance and role of these selected habitats in the life cycle of fishes and macrocrustaceans. Therefore, both habitat availability and habitat use were quantified. The importance of estuarine biotopes as habitats for fish was evaluated through a Habitat Utilisation Index. Next to the ecological guilds, also feeding guilds were developed to assess the relationship with the lower consumers. A generalised food web structure within the Westerschelde was defined, which proved the importance of mysids and other crustaceans in the food of juvenile fish and shrimps. The results were compared with other systems to examine if the Westerschelde and the Oosterschelde comply with what is inspected in European estuaries.
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