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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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Spatio-temporal patterns in benthic macrofauna on a brackish mudflat (Schelde estuary, NW-Europe): results of ten years monitoring Verbessem, I.; Ysebaert, T.J.; Van den Bergh, E.; Meire, P. (2002). Spatio-temporal patterns in benthic macrofauna on a brackish mudflat (Schelde estuary, NW-Europe): results of ten years monitoring, 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. 67 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

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Beschikbaar in	Auteurs
VLIZ: Open access 283398 [ download pdf ]
Documenttype: Samenvatting

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Trefwoorden

Aquatic communities > Benthos Aquatic communities > Benthos > Zoobenthos Distribution > Geographical distribution Ecosystems Environments Monitoring Population characteristics > Population number Sedimentary structures > Mud flats Sediments Spatial variations Taxa > Species > Dominant species Temporal variations Temporal variations > Periodic variations > Seasonal variations Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries Corophium Latreille, 1806 [WoRMS]; Heteromastus Eisig, 1887 [WoRMS]; Oligochaeta [WoRMS] ANE, Europa, Noordwest [Marine Regions]; België, Schelde R. [Marine Regions]

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Auteurs		Top
Verbessem, I., meer Ysebaert, T.J., meer Van den Bergh, E., meer Meire, P., meer

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Abstract

Estuarine ecosystems are charac­terized by largely varying physicochemi­cal condi­tions, especially in the meso-/oligohaline zones. Knowledge of the environmental variability and related population effects on a range of spatio-temporal scales is fundamental to a better understanding of their functioning, stability, resilience and the way they are influenced by human impacts. This study combines spatial and temporal variations in macrobenthic populations (and their environment) on a brackish mudflat in the Schelde estuary (NW-Europe). From 1990 to 1999, long -term year-to-year variations were monitored on 24 sites, short -term monthly variations on two sites. The variation in macrobenthos and the physicochemical environment due to seasonal dynamics, spatial pattern, and annual as well as long-term trends, was quantified. The macrobenthic community on the mudflat was characterized by a few dominant species (Corophium, Heteromastus, Nereis, Oligochaeta), with spatial distributions related to sediment characteristics. Considerable year-to-year variation was observed and seasonality was evident for all species. It is argued that in the meso-/oligohaline zone, where salinity shows large seasonal fluctuations, benthic communities change frequently during the year, resulting in communities that seldom progress beyond early benthic-community succession. Annual variations are less pronounced. The impact of the construction of a containerterminal (1994), adjacent to the mudflat, on the macrobentic species distributions is discussed.

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