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Early postlarval fish in the hyperbenthos of the Dutch Delta (south-west Netherlands) Beyst, B.; Mees, J.; Cattrijsse, A. (1999). Early postlarval fish in the hyperbenthos of the Dutch Delta (south-west Netherlands). J. Mar. Biol. Ass. U.K. 79(4): 709-724. https://dx.doi.org/10.1017/S0025315498000861 In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 147518 [ download pdf ]

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Trefwoorden

Aquatic communities > Benthos > Zoobenthos Aquatic organisms > Marine organisms > Fish > Marine fish Composition > Community composition Developmental stages > Juveniles Distribution > Ecological distribution Environments > Aquatic environment > Marine environment > Intertidal environment Nursery grounds Population characteristics > Population density Sprattus sprattus Taxa > Species > Dominant species Topographic features > Landforms > Coastal landforms > Deltas Vertebrates > Fishes > Osteichthyes > Pleuronectiformes > Pleuronectidae > Pleuronectes Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries Water bodies > Inland waters > Wetlands Water bodies > Inland waters > Wetlands > Marshes > Salt marshes Clupea harengus Linnaeus, 1758 [WoRMS]; Dicentrarchus labrax (Linnaeus, 1758) [WoRMS]; Solea solea (Linnaeus, 1758) [WoRMS] Marien/Kust

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Auteurs		Top
Beyst, B. Mees, J. Cattrijsse, A.

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Abstract

Early (post)larval fish constitute a significant part of the temporary hyperbenthos, i.e. of the fauna living in the lower reaches of the water column close to the substratum. Information on the densities and spatial and temporal variations of these stages, as well as on their lengths at the moment of occurrence, can be an important contribution to the knowledge of their dispersion, migrations and to the identification of possible bottlenecks in their recruitment. Therefore the hyperbenthos of the Voordelta, a shallow coastal zone in front of the Dutch Delta, as well as that of the subtidal channels and the intertidal brackish marsh creeks of the Westerschelde Estuary, was sampled monthly during one year by means of a sledge and a stow net. A total of 37 taxa were recorded from 410 samples. Densities often exceeded 400ind 1000m-2 in the Voordelta and 300ind 1000m-2 in the Westerschelde, including the tidal marshes of Waarde and Saeftinghe. The dominant taxa were clupeid larvae (predominantly herring Clupea harengus and sprat Sprattus sprattus, Pomatoschistus spp. (a mixture of sand goby P. minutus and Lozano's goby P. lozanoi), common goby Pomatoschistus microps, Syngnathus spp. (probably almost exclusively Nilsson's pipefish S. rostellatus), plaice Pleuronectes platessa, sole Solea solea and flounder Pleuronectes flesus. Most species were found at a larger size in the Westerschelde (and in the tidal marshes) suggesting migration from the shallow coastal area into the estuary. Several species utilize the tidal marshes in the brackish reaches of the Westerschelde. The nursery value of these areas however, is restricted to specific early life history stages of a few species, especially flounder, bass Dicentrarchus labrax and the common goby. The estuary itself seems to function as a nursery for other species like sole and plaice. The hyperbenthic sledge was found to sample specific life history stages of postlarval flatfish (early settlement stages at the onset of asymmetry), which are not easy to sample with other types of sampling gear.

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