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The diet and consumption of dominant fish species in the upper Scheldt estuary, Belgium Maes, J.; De Brabandere, L.; Ollevier, F.; Mees, J. (2003). The diet and consumption of dominant fish species in the upper Scheldt estuary, Belgium. J. Mar. Biol. Ass. U.K. 83(3): 603-612. https://dx.doi.org/10.1017/S0025315403007537h 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 98726 [ download pdf ]

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Trefwoorden

Abundance Aquatic communities > Benthos Construction Developmental stages > Juveniles Diets Fauna > Aquatic organisms > Aquatic animals > Fish Interspecific relationships > Predation Niches Nutritive value Properties > Chemical properties > Salinity Properties > Physical properties > Turbidity Resources > Natural resources > Food resources Taxa > Species > Dominant species Temporal variations > Periodic variations > Seasonal variations België, Schelde R. [Marine Regions] Marien/Kust

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Auteurs		Top
Maes, J. De Brabandere, L. Ollevier, F. Mees, J.

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Abstract

Seasonal changes in the diet composition and trophic niche overlap were examined for the dominant members of the fish assemblage of the turbid low-salinity zone of the Scheldt estuary (Belgium). Samples of fish were taken in the cooling water of a power plant. Juveniles of eight species dominated the fish assemblage: two goby species, herring, sprat, bass, flounder, eel and pikeperch. Together, they had preyed upon 31 different prey taxa. Calanoid copepods and hyperbenthic mysids were the most important prey items with macrobenthic invertebrates being largely ignored. Pair-wise comparisons of trophic niche overlap showed that, in general, niche overlap between individuals of the same species was significantly higher than overlap between individuals from different species, suggesting that the available food resources were partitioned. The total annual prey consumption by the dominant fish species was estimated at 610 mg ash-free dry weight m-3.

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