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First record of the targetfish, Terapon jarbua (Forsskål, 1775) in the Zeeschelde, Belgium Research Institute for Nature and Forest
Fish assemblages as ecological indicator in estuaries: the Zeeschelde (Belgium) = Visgemeenschappen als ecologische indicator voor estuaria: de Zeeschelde (België) Research Institute for Nature and Forest
The Schelde is a lowland river originating in the northern part of France (St. Quentin), and entering the North Sea near Vlissingen, The Netherlands. The estuary covers about half of its length (355 km) as the tidal influence is stopped by sluices near Gent 160 km upstream. We focused on the Zeeschelde, the estuarine part in Flanders comprising a mesohaline, an oligohaline and a freshwater tidal zone. The Zeeschelde is subject to severe ...
Fish assemblages across a salinity gradient in the Zeeschelde estuary (Belgium) KU Leuven
Between 1991 and 2008 a total of 71 fish species was recorded in the brackish and fresh water zone of the Schelde estuary (Zeeschelde). The results were obtained from fish surveys from the cooling water filter screens of the power plant at Doel (between 1991 and 2008) and fyke net surveys along the length of the estuary between 1995 and 2008. Species abundance in the different salinity zones was analysed using the fyke net data only. The ten ...
A zone-specific fish-based biotic index as a management tool for the Zeeschelde estuary (Belgium) Research Institute for Agriculture, Fisheries and Food Research Institute for Nature and Forest KU Leuven
Fish-based indices monitor changes in surface waters and are a valuable aid in communication by summarising complex information about the environment (Harrison and Whitfield, 2004). A zone-specific fish-based multimetric estuarine index of biotic integrity (Z-EBI) was developed based on a 13 year time series of fish surveys from the Zeeschelde estuary (Belgium). Sites were pre-classified using indicators of anthropogenic impact. Metrics ...
Long-term phytoplankton dynamics in the Zeeschelde estuary (Belgium) are driven by the interactive effects of de-eutrophication, altered hydrodynam- ics and extreme weather events University of Antwerp
We studied how changing human impacts affected phytoplankton dynamics in the freshwater and brackish tidal reaches of the Zeeschelde estuary (Belgium) between 2002 and 2018. Until the early 2000s, the Zeeschelde was heavily polluted due to high wastewater discharges. By 2008, water quality had improved, resulting in lower nutrient concentrations and higher oxygen levels. Since 2009, however, increased dredging activities resulted in altered ...
Fish assemblages across a salinity gradient in the Zeeschelde estuary (Belgium) test Research Institute for Nature and Forest
Morfologie mesoschaal - metingen IGG Zeeschelde: deelrapport 4. Eerstelijnsanalyse van de uitgevoerde stromingsmetingen op de intergetijdengebieden in de Zeeschelde Flanders Hydraulics
Intergetijdegebieden hebben een belangrijke functie in het estuarium bv. als habitat van talrijke levensgemeenschappen. De beschikbare datasets van goede stroomsnelheidsmetingen beperkt zich echter voornamelijk tot de geulen. Daarom werden er door het Waterbouwkundig Laboratorium stromingsmetingen uitgevoerd op verschillende slikken langsheen de Zeeschelde, telkens over 2 volledige springtij-doodtij-cycli. In dit rapport worden de resultaten van ...
Unimodal head-width distribution of the European eel (Anguilla anguilla L.) from the Zeeschelde does not support disruptive selection Flanders Marine Institute
Since the early 20th century, European eels (Anguilla anguilla L.) have been dichotomously classified into `narrow' and `broad' heads. These morphs are mainly considered the result of a differential food choice, with narrow heads feeding primarily on small/soft prey and broad heads on large/hard prey. Yet, such a classification implies that head-width variation follows a bimodal distribution, leading to the assumption of disruptive selection. We ...
Vissen in de Zeeschelde 2012-2021 Research Institute for Nature and Forest
Sinds 2012 worden de visgemeenschappen in de Zeeschelde op twee manieren bemonsterd. Op 4 plaatsen wordt in voorjaar, zomer en najaar telkens gevist met ankerkuil in de waterkolom en met dubbele schietfuik, dichter tegen de bodem nabij de laagwaterlijn. Met een aantal metrieken, die telkens een bepaald ecosysteemkenmerk evalueren gaan we na of beide methoden de functie van de Zeeschelde voor visgemeenschappen op dezelfde wijze beoordeelt.
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