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Hydromorphological characterization of benthic habitats and species distributions in the Scheldt Estuary

Research output: Contribution to conferencePaper/Powerpoint/Abstract

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Hydromorphological characterization of benthic habitats and species distributions in the Scheldt Estuary. / Van Braeckel, Alexander; Speybroeck, Jeroen; Vanoverbeke, Joost; Plancke, Yves; Van den Bergh, Erika.

2015. Paper presented at ECSA 55 Unbounded boundaries and shifting baselines, Londen, United Kingdom.

Research output: Contribution to conferencePaper/Powerpoint/Abstract

Harvard

Van Braeckel, A, Speybroeck, J, Vanoverbeke, J, Plancke, Y & Van den Bergh, E 2015, 'Hydromorphological characterization of benthic habitats and species distributions in the Scheldt Estuary', Paper presented at ECSA 55 Unbounded boundaries and shifting baselines, Londen, United Kingdom, 6/09/15 - 9/09/15.

APA

Van Braeckel, A., Speybroeck, J., Vanoverbeke, J., Plancke, Y., & Van den Bergh, E. (2015). Hydromorphological characterization of benthic habitats and species distributions in the Scheldt Estuary. Paper presented at ECSA 55 Unbounded boundaries and shifting baselines, Londen, United Kingdom.

Author

Bibtex

@conference{01037f493f354faf86f68bb103c35e67,
title = "Hydromorphological characterization of benthic habitats and species distributions in the Scheldt Estuary",
abstract = "within Session : Biology and ecology of coastal and estuarine systems: Evolution, adaptation and shifting baselinesHydromorphological characterization of benthic habitats and species distributions in the Scheldt EstuaryOver the last decades the Scheldt Estuary has been altered by anthropogenic measures such as channel widening and enhanced wastewater treatment. At the same time, macrobenthic invertebrate abundance decreased whereas hyperbenthic (including mysid, shrimps, and decapod shrimps) and fish species reappeared in the upstream freshwater part. To assess effects of future modifications (maintain accessibility, dumping,...) on benthic species and their communities, a better understanding of the relation with hydro- and morphodynamics is necessary.Combining hydrodynamic and ecological modelling we have investigated the relation of benthic species and communities with morphological and hydrodynamic variables in subtidal habitats of the fresh and brackish water part of the Scheldt. Flow velocities, derived from a 2D hydrodynamic modelling, water depth, sediment characteristics and organic matter are used. Firstly, a multivariate analysis allowed for a distinction of a brackish and freshwater subtidal macrobenthic community. Secondly, within these salinity zones, maximum flood velocity explains the response of the benthic species and communities. This reflected in a typical high and low dynamic subtidal benthic community. Additionally hyperbenthic species preferred flood dominant areas within high dynamic areas. Based on a threshold analysis taking into account the most relevant variables, benthic and hyperbenthic community composition, a new habitat typology has been constructed. This typology provides an improved, ecologically validated instrument for monitoring and the assessment of future measures.",
author = "{Van Braeckel}, Alexander and Jeroen Speybroeck and Joost Vanoverbeke and Yves Plancke and {Van den Bergh}, Erika",
year = "2015",
month = "9",
day = "9",
language = "English",
note = "null ; Conference date: 06-09-2015 Through 09-09-2015",
url = "https://ecsa.international/event/2015/ecsa-55-unbounded-boundaries-and-shifting-baselines-estuaries-and-coastal-seas-rapidly",

}

RIS

TY - CONF

T1 - Hydromorphological characterization of benthic habitats and species distributions in the Scheldt Estuary

AU - Van Braeckel, Alexander

AU - Speybroeck, Jeroen

AU - Vanoverbeke, Joost

AU - Plancke, Yves

AU - Van den Bergh, Erika

PY - 2015/9/9

Y1 - 2015/9/9

N2 - within Session : Biology and ecology of coastal and estuarine systems: Evolution, adaptation and shifting baselinesHydromorphological characterization of benthic habitats and species distributions in the Scheldt EstuaryOver the last decades the Scheldt Estuary has been altered by anthropogenic measures such as channel widening and enhanced wastewater treatment. At the same time, macrobenthic invertebrate abundance decreased whereas hyperbenthic (including mysid, shrimps, and decapod shrimps) and fish species reappeared in the upstream freshwater part. To assess effects of future modifications (maintain accessibility, dumping,...) on benthic species and their communities, a better understanding of the relation with hydro- and morphodynamics is necessary.Combining hydrodynamic and ecological modelling we have investigated the relation of benthic species and communities with morphological and hydrodynamic variables in subtidal habitats of the fresh and brackish water part of the Scheldt. Flow velocities, derived from a 2D hydrodynamic modelling, water depth, sediment characteristics and organic matter are used. Firstly, a multivariate analysis allowed for a distinction of a brackish and freshwater subtidal macrobenthic community. Secondly, within these salinity zones, maximum flood velocity explains the response of the benthic species and communities. This reflected in a typical high and low dynamic subtidal benthic community. Additionally hyperbenthic species preferred flood dominant areas within high dynamic areas. Based on a threshold analysis taking into account the most relevant variables, benthic and hyperbenthic community composition, a new habitat typology has been constructed. This typology provides an improved, ecologically validated instrument for monitoring and the assessment of future measures.

AB - within Session : Biology and ecology of coastal and estuarine systems: Evolution, adaptation and shifting baselinesHydromorphological characterization of benthic habitats and species distributions in the Scheldt EstuaryOver the last decades the Scheldt Estuary has been altered by anthropogenic measures such as channel widening and enhanced wastewater treatment. At the same time, macrobenthic invertebrate abundance decreased whereas hyperbenthic (including mysid, shrimps, and decapod shrimps) and fish species reappeared in the upstream freshwater part. To assess effects of future modifications (maintain accessibility, dumping,...) on benthic species and their communities, a better understanding of the relation with hydro- and morphodynamics is necessary.Combining hydrodynamic and ecological modelling we have investigated the relation of benthic species and communities with morphological and hydrodynamic variables in subtidal habitats of the fresh and brackish water part of the Scheldt. Flow velocities, derived from a 2D hydrodynamic modelling, water depth, sediment characteristics and organic matter are used. Firstly, a multivariate analysis allowed for a distinction of a brackish and freshwater subtidal macrobenthic community. Secondly, within these salinity zones, maximum flood velocity explains the response of the benthic species and communities. This reflected in a typical high and low dynamic subtidal benthic community. Additionally hyperbenthic species preferred flood dominant areas within high dynamic areas. Based on a threshold analysis taking into account the most relevant variables, benthic and hyperbenthic community composition, a new habitat typology has been constructed. This typology provides an improved, ecologically validated instrument for monitoring and the assessment of future measures.

M3 - Paper/Powerpoint/Abstract

ER -

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