Onderzoeksoutput

Welkom op het expertplatform!

Dit platform verschaft informatie en kennis omtrent de WL expertisedomeinen 'hydraulica en sediment', 'havens en waterwegen', 'waterbouwkundige constructies', 'waterbeheer' en 'kustbescherming' - gaande van WL medewerkers met hun expertise, het curriculum van deze instelling, tot publicaties, projecten, data (op termijn) en evenementen waarin het WL betrokken is.

Het WL onderschrijft het belang van "open access" voor de ontsluiting van haar onderzoeksresultaten. Lees er meer over in ons openaccessbeleid.

log in

• 
  People
• 
  Curriculum
• 
  Projects
• 
  Data sets
• 
  Publications
• 
  Events

[ meld een fout in dit record ]

mandje (0): toevoegen | toon

---

Fish assemblages across a salinity gradient in the Zeeschelde estuary (Belgium) Breine, J.; Maes, J.; Ollevier, F.; Stevens, M. (2009). Fish assemblages across a salinity gradient in the Zeeschelde estuary (Belgium), in: Breine, J. Fish assemblages as ecological indicator in estuaries: the Zeeschelde (Belgium) = Visgemeenschappen als ecologische indicator voor estuaria: de Zeeschelde (België). Doctoraten van het Instituut voor Natuur- en Bosonderzoek = PhD theses of the Research Institute for Nature and Forest, T.2009.1: pp. 20-46 In: Breine, J. (2009). Fish assemblages as ecological indicator in estuaries: the Zeeschelde (Belgium) = Visgemeenschappen als ecologische indicator voor estuaria: de Zeeschelde (België). Doctoraten van het Instituut voor Natuur- en Bosonderzoek = PhD theses of the Research Institute for Nature and Forest, T.2009.1. PhD Thesis. KU Leuven/INBO: Leuven. ISBN 978-90-403-0299-2. 263 pp. In: Doctoraten van het Instituut voor Natuur- en Bosonderzoek = PhD theses of the Research Institute for Nature and Forest. Instituut voor Natuur- en Bosonderzoek Is gerelateerd aan: Breine, J.; Maes, J.; Ollevier, F.; Stevens, M. (2011). Fish assemblages across a salinity gradient in the Zeeschelde estuary (Belgium). Belg. J. Zool. 141(2): 21-44, meer

---

Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 154908 [ download pdf ]

---

Trefwoorden

Gradients > Salinity gradients Spatial variations België, Zeeschelde [Marine Regions] Marien/Kust; Brak water; Zoet water

Author keywords

fish assemblages; spatial variation; low salinity zone; functional guilds

---

Auteurs		Top
Breine, J. Maes, J. Ollevier, F. Stevens, M.

---

Abstract

Between 1991 and 2008 a total of 71 fish species was recorded within the Zeeschelde estuary.The results were obtained from fish surveys from the cooling water filter screens of the power plant at Doel (between 1991 and 2008) and fish surveys along the length of the estuary (collected with ‘paired-fyke’ nets between 1995 and 2008). Species abundance in the salinity zones was analysed using the fyke net data only. The ten most abundant species represent 90.8% of the total number of individuals caught. In decreasing order of abundance: flounder (Platichthys flesus), roach (Rutilus rutilus), herring (Clupea harengus), eel (Anguilla anguilla), pike-perch (Sander lucioperca), sole (Solea solea), common goby (Pomatoschistus microps), seabass (Dicentrarchus labrax), three-spined stickleback (Gasterosteus aculeatus) and white bream (Blicca bjoerkna). Species richness ranges from 33 species in the tidal freshwater zone, 43 species in the oligohaline zone to 59 species in the mesohaline zone. Each salinity zone is characterised by a typical fish assemblage, although some species are shared between all three salinity zones: e.g. three-spined stickleback (Gasterosteus aculeatus),Prussian carp (Carrasius gibelio), roach (Rutilus rutilus) and eel (Anguilla anguilla). Freshwater species comprise about 70% of the species in the freshwater zone. In the oligohaline zone the contribution of the freshwater species to the species richness is less while marine migrants become more abundant. As expected, the contribution of marine migrants and estuarine species is higher in the mesohaline zone. The recorded differences in fish assemblages between the different zones could be attributed to habitat differences and hence the definition of different estuarine fish guilds. The recent increase in species richness in the freshwater and oligohaline zone coincides with a remarkable increase in dissolved oxygen since 2007. It is argued that the fish community in the Zeeschelde would benefit from the creation of a diversified habitat with connected floodplains, mudflats and tidal marshes.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs

IMIS is ontwikkeld en wordt gehost door het VLIZ.