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Changes in the fish fauna of the Oosterschelde estuary: a ten-year time series of fyke catches Hamerlynck, O.; Hostens, K. (2003). Changes in the fish fauna of the Oosterschelde estuary: a ten-year time series of fyke catches, in: Hostens, K. The demersal fish and macro-invertebrate assemblages of the Westerschelde and Oosterschelde estuaries (Southern Bight of the North Sea) = De demersale vis- en macro-invertebraten gemeenschappen van de Westerschelde en Oosterschelde estuaria (Zuidelijke Bocht van de Noordzee). pp. 51-58 In: Hostens, K. (2003). The demersal fish and macro-invertebrate assemblages of the Westerschelde and Oosterschelde estuaries (Southern Bight of the North Sea) = De demersale vis- en macro-invertebraten gemeenschappen van de Westerschelde en Oosterschelde estuaria (Zuidelijke Bocht van de Noordzee). PhD Thesis. Universiteit Gent. Faculteit Wetenschappen: Gent. XVI, 205, 1 cd-rom pp. Is gerelateerd aan: Hamerlynck, O.; Hostens, K. (1994). Changes in the fish fauna of the Oosterschelde estuary: a ten-year time series of fyke catches, in: Nienhuis, P.H. et al. The Oosterschelde Estuary (The Netherlands): A case-study of a changing ecosystem. Developments in Hydrobiology, 97: pp. 497-507. https://dx.doi.org/10.1007/978-94-011-1174-4_36, meer Hamerlynck, O.; Hostens, K. (1994). Changes in the fish fauna of the Oosterschelde estuary: a ten-year time series of fyke catches. Hydrobiologia 282: 497-507. https://dx.doi.org/10.1007/BF00024651, meer

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Beschikbaar in	Auteurs
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Trefwoorden

Fyke nets Structures > Hydraulic structures > Coastal structures > Coast defences > Barriers > Storm surge barriers ANE, Nederland, Oosterschelde [Marine Regions] Brak water

Author keywords

Fish community

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Auteurs		Top
Hamerlynck, O. Hostens, K.

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Abstract

Frequency of occurrence of fish species was monitored on a fortnightly basis in four fykes and a weir in the Oosterschelde estuary from 1979 through 1988. This was done in order to record changes in the fish fauna that may have occurred as a response to the construction of a storm-surge barrier in the mouth of the Oosterschelde (1984-1986) and the concomitant building of compartmentalization dams in the landward part. These compartmentalization dams reduced the freshwater inflow into the system. Principal component analysis using the annual averages in frequency of occurrence suggests a slight shift occurred in the fish community separating a cluster of years 1979-1984 from the cluster 1985-1988. Many of the changes in individual species could be attributed to fluctuations in yearclass strength or were part of changes occurring on a wider geographical scale. The only impact of the construction works seems to be the decrease in a number of anadromous fish. Fish traps seem to be useful as a monitoring tool for a number of species. The value of the data collected could be improved if catch size and length-frequency data are recorded.

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