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Tidal, diel and semi-lunar changes in the faunal assemblage of an intertidal salt marsh creek Hampel, H.; Cattrijsse, A.; Vincx, M. (2003). Tidal, diel and semi-lunar changes in the faunal assemblage of an intertidal salt marsh creek. Est., Coast. and Shelf Sci. 56(3-4): 795-805. https://dx.doi.org/10.1016/s0272-7714(02)00296-2 In: Estuarine, Coastal and Shelf Science. Academic Press: London; New York. ISSN 0272-7714; e-ISSN 1096-0015

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 98885 [ download pdf ]

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Trefwoorden

Behaviour > Migrations Environmental effects > Tidal effects Environments > Aquatic environment > Brackishwater environment Motion > Tidal motion > Tides > Diurnal tides Motion > Tidal motion > Tides > Semidiurnal tides Water bodies > Inland waters > Wetlands > Marshes > Salt marshes ANE, Nederland, Westerschelde [Marine Regions] Marien/Kust; Brak water

Author keywords

tidal; diel; semi-lunar cycle; migration; salt marsh

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Auteurs		Top
Hampel, H. Cattrijsse, A. Vincx, M.

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Abstract

The utilisation of a brackish estuarine marsh by nekton was investigated over a semi-lunar cycle in August 1994. Nekton migrating in and out of the intertidal creeks of the marsh `Het Verdronken Land van Saeftinghe' in the Westerschelde estuary, SW Netherlands, was sampled passively during seven complete tidal cycles. Sampling one tidal cycle yielded three consecutive flood samples and four consecutive ebb samples. Sampling occurred every 2-3 days, covering diel, tidal and semi-lunar situations, thus allowing comparison of tidal, diel and semi-lunar influences on the composition of the intertidal fauna. Two different tidal-migration modes were observed. The mysid shrimp, Mesopodopsis slabberi, showed maximum abundance around high tide. For the remaining common species, the mysid (Neomysis integer), the shrimp (Palaemonetes varians), the crab (Carcinus maenas) and the goby (Pomatoschistus microps) and the amphipod (Corophium volutator), highest densities were recorded during lower water heights. The faunal assemblage shifts between the different tidal stages. On two occasions, consecutive day and night samples were taken. Total densities were higher during the night samples. During spring tide, difference in community composition was noticed between the night and the day samples. During neap tide, day-night differences were less clear. Recorded total densities were highest during spring tide and lowest during neap tide. At maximum water levels, a drop in total density was observed. A shift in community composition occurred between spring and neap tides.

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