Are flow-vegetation interactions well represented by mimics? A case study of mangrove pneumatophores

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dc.contributor.authorHorstman, Erik M.en_NZ
dc.contributor.authorBryan, Karin R.en_NZ
dc.contributor.authorMullarney, Julia C.en_NZ
dc.contributor.authorPilditch, Conrad A.en_NZ
dc.contributor.authorEager, Christopher Andrewsen_NZ
dc.date.accessioned2018-11-21T02:46:36Z
dc.date.available2018-01-01en_NZ
dc.date.available2018-11-21T02:46:36Z
dc.date.issued2018en_NZ
dc.description.abstractArrays of real mangrove pneumatophores (i.e. aboveground pencil roots) and artificial dowel mimics were constructed in a laboratory flume to examine differences in canopy flow dynamics. Compared to the uniform-height dowel canopy, the non-uniform height of the pneumatophores significantly reduced the intensity of the canopy shear, and shifted the turbulence maxima observed directly above the dowels upwards by approximately the standard deviation of the pneumatophore heights. Consequently, bed shear stresses were up to two times greater in the uniform-height dowel canopy than in a pneumatophore canopy of similar density. At the same time, ratios of the within-canopy velocity to the free-stream velocity above the canopies were not significantly altered by the heterogeneous height, shape and spatial distribution of the pneumatophores. Our results emphasize that uniform dowels are poor proxies of real pneumatophore canopies and may lead to underestimations of sediment-trapping efficiency.
dc.format.mimetypeapplication/pdf
dc.identifier.citationHorstman, E. M., Bryan, K. R., Mullarney, J. C., Pilditch, C. A., & Eager, C. A. (2018). Are flow-vegetation interactions well represented by mimics? A case study of mangrove pneumatophores. Advances in Water Resources, 111, 360–371. https://doi.org/10.1016/j.advwatres.2017.11.018en
dc.identifier.doi10.1016/j.advwatres.2017.11.018en_NZ
dc.identifier.eissn1872-9657en_NZ
dc.identifier.issn0309-1708en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/12205
dc.language.isoenen_NZ
dc.publisherElsevieren_NZ
dc.relation.isPartOfAdvances in Water Resourcesen_NZ
dc.rightsThis is an author’s accepted version of an article published in the journal: Advances in Water Resources. © 2018 Elsevier.
dc.subjectScience & Technologyen_NZ
dc.subjectPhysical Sciencesen_NZ
dc.subjectWater Resourcesen_NZ
dc.subjectVegetated flowen_NZ
dc.subjectAnalogue experimentsen_NZ
dc.subjectRecirculating flumeen_NZ
dc.subjectAvicennia marinaen_NZ
dc.subjectVectrino profileren_NZ
dc.subjectTurbulence profileen_NZ
dc.subjectReynolds stressen_NZ
dc.subjectOPEN-CHANNEL FLOWen_NZ
dc.subjectEMERGENT VEGETATIONen_NZ
dc.subjectAQUATIC VEGETATIONen_NZ
dc.subjectTURBULENT-FLOWen_NZ
dc.subjectTIDAL MARSHen_NZ
dc.subjectMEAN FLOWen_NZ
dc.subjectFIELDen_NZ
dc.subjectTRANSPORTen_NZ
dc.subjectCANOPIESen_NZ
dc.subjectFORESTSen_NZ
dc.titleAre flow-vegetation interactions well represented by mimics? A case study of mangrove pneumatophoresen_NZ
dc.typeJournal Article
pubs.begin-page360
pubs.elements-id215676
pubs.end-page371
pubs.organisational-group/Waikato
pubs.organisational-group/Waikato/2018 PBRF
pubs.organisational-group/Waikato/FSEN
pubs.organisational-group/Waikato/FSEN/2018 PBRF - FSEN
pubs.organisational-group/Waikato/FSEN/School of Science
pubs.organisational-group/Waikato/FSEN/School of Science/2018 PBRF - School of Science
pubs.organisational-group/Waikato/Staff
pubs.publication-statusPublisheden_NZ
pubs.user.infoPilditch, Conrad (conrad@waikato.ac.nz)
pubs.user.infoBryan, Karin (kbryan@waikato.ac.nz)
pubs.user.infoMullarney, Julia (juliam@waikato.ac.nz)
pubs.volume111en_NZ
uow.verification.statusverified
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