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dc.contributor.author
Fernandez, Rocio Luz
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dc.contributor.author
McLelland, Stuart
dc.contributor.author
Parsons, Daniel R.
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dc.contributor.author
Bodewes, Bas
dc.date.available
2023-08-14T12:14:31Z
dc.date.issued
2021-07
dc.identifier.citation
Fernandez, Rocio Luz; McLelland, Stuart; Parsons, Daniel R.; Bodewes, Bas; Riparian vegetation life stages control the impact of flood sequencing in braided river morphodynamics; John Wiley & Sons Ltd; Earth Surface Processes And Landforms; 46; 11; 7-2021; 2315-2329
dc.identifier.issn
0197-9337
dc.identifier.uri
http://hdl.handle.net/11336/208071
dc.description.abstract
With riverine flooding set to be more frequent in many parts of the world as a result of climate change, the interactions between fluvial morphodynamics and riparian vegetation may depend in part on the sequence of flood events. This paper describes a laboratory study of the geomorphic adjustment of a braided river to sequences of floods across five different strengths of braidplain vegetation. By using alfalfa as a proxy for braidplain vegetation, the differing plant life stages were used to represent the varying strengths of biogeomorphic feedbacks across the floods. Boundary conditions were constrained by sets of experimental runs with both equilibrium sediment loads and deficit loads. Changes in bed topography were monitored and assessed using a detailed digital elevation model, digital imagery and continuous monitoring of the transported sediment. Results demonstrate that in absence of plant colonization, vegetation placed the rivers in a non-equilibrium condition, in which riparian vegetation encouraged the development of new channels, increased the system channel width and enhanced topographic irregularity, these effects being more noticeable during the low-flow periods. The morphodynamics was found to be less sensitive to variations in flood discharges as the vegetation influence (strength) increased from minimum to maximum, until vegetation began to die back and the impacts of flood sequences became yet again evident. Although the overall sediment transport rate was reduced under full-grown vegetation conditions, the presence of the mature plants across the braid bars resulted in the greatest channel scour depths. Results are considered in light of expected changes in flood frequency with climate and likely morphodynamic responses of river systems as a result.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
John Wiley & Sons Ltd
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BIOGEOMORPHOLOGY
dc.subject
BRAIDED RIVER
dc.subject
CLIMATE CHANGE
dc.subject
FLOOD SEQUENCE
dc.subject
VEGETATION
dc.subject.classification
Oceanografía, Hidrología, Recursos Hídricos
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Riparian vegetation life stages control the impact of flood sequencing in braided river morphodynamics
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-08-11T14:56:30Z
dc.journal.volume
46
dc.journal.number
11
dc.journal.pagination
2315-2329
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Fernandez, Rocio Luz. University of Hull; Reino Unido. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.description.fil
Fil: McLelland, Stuart. University of Hull; Reino Unido
dc.description.fil
Fil: Parsons, Daniel R.. University of Hull; Reino Unido
dc.description.fil
Fil: Bodewes, Bas. University of Hull; Reino Unido
dc.journal.title
Earth Surface Processes And Landforms
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/esp.5177
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/esp.5177
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