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dc.contributor.authorChen, Xindi
dc.contributor.authorZhang, Changkuan
dc.contributor.authorTownend, Ian
dc.contributor.authorPaterson, David M.
dc.contributor.authorGong, Zheng
dc.contributor.authorJiang, Qin
dc.contributor.authorFeng, Qian
dc.contributor.authorYu, Xiping
dc.identifier.citationChen , X , Zhang , C , Townend , I , Paterson , D M , Gong , Z , Jiang , Q , Feng , Q & Yu , X 2021 , ' Biological cohesion as the architect of bed movement under wave action ' , Geophysical Research Letters , vol. 48 , no. 5 , e2020GL092137 .
dc.identifier.otherPURE: 272523819
dc.identifier.otherPURE UUID: a051f082-6567-4fb6-b137-595e3d1d7c1a
dc.identifier.otherJisc: 209ad900d39d4d2189f179eb78d5e10d
dc.identifier.otherORCID: /0000-0003-1174-6476/work/87845525
dc.identifier.otherScopus: 85102367022
dc.identifier.otherWOS: 000627892100076
dc.descriptionFunding for this project was provided by the National Key Research and Development Project, MOST, China (2018YFC0407506), the National Natural Science Foundation of China (51620105005), and the China Postdoctoral Science Foundation (2020M680580). D. M. Paterson acknowledges NERC funding (NE/N016009/1).en
dc.description.abstractCohesive extracellular polymeric substances (EPS) generated by microorganisms abundant on Earth are regarded as bed “stabilizers” increasing the erosion threshold in sedimentary systems. However, most observations of this phenomenon have been taken under steady flow conditions. In contrast, we present how EPS affect the bed movement under wave action, showing a destabilization of the system. We demonstrate a complex behavior of the bio‐sedimentary deposits, which encompasses liquefaction, mass motion, varying bed formations and erosion, depending on the amount of EPS present. Small quantities of EPS induce higher mobility of the sediments, liquefying an otherwise stable bed. Bed with larger quantities of EPS undergoes a synchronized mechanical oscillation. Our analysis clarifies how biological cohesion can potentially put coastal wetlands at risk by increasing their vulnerability to waves. These findings lead to a revised understanding of the different roles played by microbial life, and their importance as mediators of seabed mobility.
dc.relation.ispartofGeophysical Research Lettersen
dc.rightsCopyright © 2021. American Geophysical Union. All Rights Reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at
dc.subjectBed stabilityen
dc.subjectBiological cohesionen
dc.subjectCoastal safetyen
dc.subjectSediment erosionen
dc.subjectWave actionen
dc.subjectQE Geologyen
dc.subjectQH301 Biologyen
dc.titleBiological cohesion as the architect of bed movement under wave actionen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. St Andrews Sustainability Instituteen
dc.contributor.institutionUniversity of St Andrews. Coastal Resources Management Groupen
dc.contributor.institutionUniversity of St Andrews. Sediment Ecology Research Groupen
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.description.statusPeer revieweden

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