On the modelling of biological effects on morphology in estuaries and seas

Michiel Knaapen, Harriette Holzhauer, Suzanne J.M.H. Hulscher, M.J. Baptist, Mindert de Vries, M. van Ledden

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Abstract

Morphological modelling aims to explain and predict the changes in rivers, seas and estuaries due to these interaction. In recent history, a lot of progress has been made, especially with stability analysis approaches. However, so far only the physical interactions have been taken into account. It is known however, that biological factors are important to the dynamics of the water systems. In this paper a first step is made in the inclusion of biology into the morphodynamic models. This inclusion is based on the effect that benthic organisms have on the erodibility of the bed. This can easily be included by a change of the critical bed shear stress. These changes in the critical bed shear stress then influence the morphology. This idea has been applied to two cases. The results of the first case indicate that this approach can reproduce the influence of benthic organisms on the mud content of the bed in estuaries. The second case shows that even low numbers of organisms can influence the characteristics of large bed forms.
Original languageUndefined
Title of host publicationRCEM 2003. Proceedings of the Third IAHR Symposium on River, Coastal and Estuarine Morphodynamics
EditorsA. Sánchez-Arcilla, A. Bateman
Place of PublicationMadrid, Spain
PublisherIHAR
Pages773-783
ISBN (Print)90-805649-6-6
Publication statusPublished - 1 Sep 2003
Event3rd IAHR Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2003 - Barcelona, Spain
Duration: 1 Sep 20035 Sep 2003
Conference number: 3

Publication series

Name
PublisherIHAR

Conference

Conference3rd IAHR Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2003
Abbreviated titleRCEM
CountrySpain
CityBarcelona
Period1/09/035/09/03

Keywords

  • IR-44998
  • METIS-211018

Cite this

Knaapen, M., Holzhauer, H., Hulscher, S. J. M. H., Baptist, M. J., de Vries, M., & van Ledden, M. (2003). On the modelling of biological effects on morphology in estuaries and seas. In A. Sánchez-Arcilla, & A. Bateman (Eds.), RCEM 2003. Proceedings of the Third IAHR Symposium on River, Coastal and Estuarine Morphodynamics (pp. 773-783). Madrid, Spain: IHAR.
Knaapen, Michiel ; Holzhauer, Harriette ; Hulscher, Suzanne J.M.H. ; Baptist, M.J. ; de Vries, Mindert ; van Ledden, M. / On the modelling of biological effects on morphology in estuaries and seas. RCEM 2003. Proceedings of the Third IAHR Symposium on River, Coastal and Estuarine Morphodynamics. editor / A. Sánchez-Arcilla ; A. Bateman. Madrid, Spain : IHAR, 2003. pp. 773-783
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title = "On the modelling of biological effects on morphology in estuaries and seas",
abstract = "Morphological modelling aims to explain and predict the changes in rivers, seas and estuaries due to these interaction. In recent history, a lot of progress has been made, especially with stability analysis approaches. However, so far only the physical interactions have been taken into account. It is known however, that biological factors are important to the dynamics of the water systems. In this paper a first step is made in the inclusion of biology into the morphodynamic models. This inclusion is based on the effect that benthic organisms have on the erodibility of the bed. This can easily be included by a change of the critical bed shear stress. These changes in the critical bed shear stress then influence the morphology. This idea has been applied to two cases. The results of the first case indicate that this approach can reproduce the influence of benthic organisms on the mud content of the bed in estuaries. The second case shows that even low numbers of organisms can influence the characteristics of large bed forms.",
keywords = "IR-44998, METIS-211018",
author = "Michiel Knaapen and Harriette Holzhauer and Hulscher, {Suzanne J.M.H.} and M.J. Baptist and {de Vries}, Mindert and {van Ledden}, M.",
year = "2003",
month = "9",
day = "1",
language = "Undefined",
isbn = "90-805649-6-6",
publisher = "IHAR",
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Knaapen, M, Holzhauer, H, Hulscher, SJMH, Baptist, MJ, de Vries, M & van Ledden, M 2003, On the modelling of biological effects on morphology in estuaries and seas. in A Sánchez-Arcilla & A Bateman (eds), RCEM 2003. Proceedings of the Third IAHR Symposium on River, Coastal and Estuarine Morphodynamics. IHAR, Madrid, Spain, pp. 773-783, 3rd IAHR Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2003, Barcelona, Spain, 1/09/03.

On the modelling of biological effects on morphology in estuaries and seas. / Knaapen, Michiel; Holzhauer, Harriette; Hulscher, Suzanne J.M.H.; Baptist, M.J.; de Vries, Mindert; van Ledden, M.

RCEM 2003. Proceedings of the Third IAHR Symposium on River, Coastal and Estuarine Morphodynamics. ed. / A. Sánchez-Arcilla; A. Bateman. Madrid, Spain : IHAR, 2003. p. 773-783.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

TY - GEN

T1 - On the modelling of biological effects on morphology in estuaries and seas

AU - Knaapen, Michiel

AU - Holzhauer, Harriette

AU - Hulscher, Suzanne J.M.H.

AU - Baptist, M.J.

AU - de Vries, Mindert

AU - van Ledden, M.

PY - 2003/9/1

Y1 - 2003/9/1

N2 - Morphological modelling aims to explain and predict the changes in rivers, seas and estuaries due to these interaction. In recent history, a lot of progress has been made, especially with stability analysis approaches. However, so far only the physical interactions have been taken into account. It is known however, that biological factors are important to the dynamics of the water systems. In this paper a first step is made in the inclusion of biology into the morphodynamic models. This inclusion is based on the effect that benthic organisms have on the erodibility of the bed. This can easily be included by a change of the critical bed shear stress. These changes in the critical bed shear stress then influence the morphology. This idea has been applied to two cases. The results of the first case indicate that this approach can reproduce the influence of benthic organisms on the mud content of the bed in estuaries. The second case shows that even low numbers of organisms can influence the characteristics of large bed forms.

AB - Morphological modelling aims to explain and predict the changes in rivers, seas and estuaries due to these interaction. In recent history, a lot of progress has been made, especially with stability analysis approaches. However, so far only the physical interactions have been taken into account. It is known however, that biological factors are important to the dynamics of the water systems. In this paper a first step is made in the inclusion of biology into the morphodynamic models. This inclusion is based on the effect that benthic organisms have on the erodibility of the bed. This can easily be included by a change of the critical bed shear stress. These changes in the critical bed shear stress then influence the morphology. This idea has been applied to two cases. The results of the first case indicate that this approach can reproduce the influence of benthic organisms on the mud content of the bed in estuaries. The second case shows that even low numbers of organisms can influence the characteristics of large bed forms.

KW - IR-44998

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M3 - Conference contribution

SN - 90-805649-6-6

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EP - 783

BT - RCEM 2003. Proceedings of the Third IAHR Symposium on River, Coastal and Estuarine Morphodynamics

A2 - Sánchez-Arcilla, A.

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CY - Madrid, Spain

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Knaapen M, Holzhauer H, Hulscher SJMH, Baptist MJ, de Vries M, van Ledden M. On the modelling of biological effects on morphology in estuaries and seas. In Sánchez-Arcilla A, Bateman A, editors, RCEM 2003. Proceedings of the Third IAHR Symposium on River, Coastal and Estuarine Morphodynamics. Madrid, Spain: IHAR. 2003. p. 773-783