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dc.contributor.author
Shi, Benwei
dc.contributor.author
Pratolongo, Paula Daniela
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dc.contributor.author
Du, Yongfen
dc.contributor.author
Li, Jiasheng
dc.contributor.author
Yang, S. L.
dc.contributor.author
Wu, Jihua
dc.contributor.author
Xu, Kehui
dc.contributor.author
Wang, Ya Ping
dc.date.available
2021-06-23T12:53:42Z
dc.date.issued
2020-01-10
dc.identifier.citation
Shi, Benwei; Pratolongo, Paula Daniela; Du, Yongfen; Li, Jiasheng; Yang, S. L.; et al.; Influence of Macrobenthos (Meretrix meretrix Linnaeus) on Erosion-Accretion Processes in Intertidal Flats: A Case Study From a Cultivation Zone; Blackwell Publishing; Journal of Geophysical Research: Biogeosciences; 125; 1; 10-1-2020; 1-33
dc.identifier.issn
2169-8961
dc.identifier.uri
http://hdl.handle.net/11336/134724
dc.description.abstract
The activity of benthic organisms can strongly influence sediment dynamics in an intertidal flat. However, few studies have conducted a quantitative assessments of the effect of benthic organisms on erosion-accretion processes under field conditions. The aim of this study was to quantify the effects of the benthic clam Meretrix meretrix Linnaeus (M. meretrix) on bed erodibility and sediment erosion-accretion processes in an intertidal flat. Within the cultivation zone at site A, M. meretrix is present in large numbers (up to 137 individuals per square meter). On the other hand, site B is located outside the cultivation zone. At this site, which is only 500 m away from site A alongshore, M. meretrix forms a sparse population with only 3.7 individuals per square meter. The results showed that the critical shear stress for erosion, denoted by τce, was 0.22 and 0.32 N/m2 at sites A and B, respectively, and the magnitudes of bed-level change were significantly higher at site A than site B. These results reveal the large effect of M. meretrix on decreasing τce, augmenting the erosion rate when the bed shear stress due to combined currents and waves, denoted by τcw, was higher than τce, and conversely enhancing the accretion rate when τcw < τce. The changes induced in these parameters are likely to have a large impact on model predictions of bed erodibility, sedimentary processes, and morphological evolution. Thus, integrated field measurements of hydrodynamic and bed-level changes, accompanied by simultaneous biological sampling, may help to improve the parameterization of hydro-sedimentary and morphodynamic models for shallow-water environments.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Blackwell Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
BED ERODIBILITY
dc.subject
BED SHEAR STRESS
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BED-LEVEL CHANGE
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BENTHIC ORGANISM
dc.subject
SEDIMENTARY PROCESS
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
Influence of Macrobenthos (Meretrix meretrix Linnaeus) on Erosion-Accretion Processes in Intertidal Flats: A Case Study From a Cultivation Zone
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-03-26T13:00:22Z
dc.journal.volume
125
dc.journal.number
1
dc.journal.pagination
1-33
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Washington D. C.
dc.description.fil
Fil: Shi, Benwei. East China Normal University; China. Tongji University; China
dc.description.fil
Fil: Pratolongo, Paula Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentina
dc.description.fil
Fil: Du, Yongfen. Nanjing Normal University; China
dc.description.fil
Fil: Li, Jiasheng. Nanjing University; China
dc.description.fil
Fil: Yang, S. L.. East China Normal University; China
dc.description.fil
Fil: Wu, Jihua. Fudan University; China
dc.description.fil
Fil: Xu, Kehui. State University of Louisiana; Estados Unidos
dc.description.fil
Fil: Wang, Ya Ping. East China Normal University; China
dc.journal.title
Journal of Geophysical Research: Biogeosciences
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1029/2019JG005345
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com
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