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Spatiotemporal changes in surface sediment characteristics and benthic macrofauna composition off the Rhône River in relation with its hydrological regime

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBONIFACIO, Paulo
dc.contributor.authorBOURGEOIS, Solveig
dc.contributor.authorLABRUNE, Celine
dc.contributor.authorAMOUROUX, Jean Michel
dc.contributor.authorESCOUBEYROU, Karine
dc.contributor.authorBUSCAIL, Roselyne
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorROMERO RAMIREZ, Alicia
dc.contributor.authorLANTOINE, François
dc.contributor.authorVETION, Gilles
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBICHON, Sabrina
dc.contributor.authorDESMALADES, Martin
dc.contributor.authorRIVIERE, Beatrice
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorDEFLANDRE, Bruno
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorGREMARE, Antoine
dc.date.accessioned2025-02-21T13:13:46Z
dc.date.available2025-02-21T13:13:46Z
dc.date.issued2014-12
dc.identifier.issn0272-7714en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/205106
dc.description.abstractEnThe consequences of changes in the water flow of the Rhône River on surface sediment characteristics and benthic macrofauna composition were assessed within 3 distinct areas: (1) the delta front, (2) the prodelta, and (3) the distal zone. Five stations were sampled during or closely after: (1) an oceanic flood (April 2007), (2) a generalized flood (May 2008), (3) a Cevenol flood (December 2008), and (4) a dry period (July 2011). Measurements of sediment characteristics included granulometry (D0.5), bulk descriptors of sedimentary organics (OC, TN and THAA), descriptors of labile components of sedimentary organics (chloropigments, EHAA), and both descriptors of origin (Chl-b/Chl-a, C/N) and lability (Chl-a/(Chl-a+Phaeo-a), EHAA/THAA) of sedimentary organics. Sediment Profile Images were collected during April 2007, May 2008 and July 2011. Temporal changes in both sedimentary organics and benthic macrofauna were more important in the delta front and the prodelta than in the distal zone. Bulk characteristics of sedimentary organics presented decreasing inshore/offshore gradients during both April 2007 and July 2011 but not during May and December 2008. There were significant temporal changes in EHAA/THAA at all stations. Changes in benthic macrofauna composition differed between: (1) the delta front and the prodelta, and (2) the distal zone. In the former area, the dry period was associated with the establishment of a mature community characterized by high abundances and species richness. The best description of spatiotemporal changes in benthic macrofauna composition by surface sediment characteristics was obtained using D0.5, Chl-b/Chl-a, Chl-a/(Chl-a+Phaeo-a) and EHAA, which supports the role of the quality of sedimentary organics in controlling benthic macrofauna composition.
dc.description.sponsorshipClimate and human - induced alterations in carbon cycling at the river-sea connection - ANR-06-VULN-0001en_US
dc.language.isoENen_US
dc.subject.enMediterranean Sea
dc.subject.enRhône River
dc.subject.enFloods
dc.subject.enTemporal variations
dc.subject.enParticulate organic matter
dc.subject.enZoobenthos
dc.title.enSpatiotemporal changes in surface sediment characteristics and benthic macrofauna composition off the Rhône River in relation with its hydrological regime
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.ecss.2014.10.011en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalEstuarine, Coastal and Shelf Scienceen_US
bordeaux.page196-209en_US
bordeaux.volume151en_US
bordeaux.hal.laboratoriesEPOCen_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamECOBIOCen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcecrossref
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcecrossref
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Estuarine,%20Coastal%20and%20Shelf%20Science&rft.date=2014-12&rft.volume=151&rft.spage=196-209&rft.epage=196-209&rft.eissn=0272-7714&rft.issn=0272-7714&rft.au=BONIFACIO,%20Paulo&BOURGEOIS,%20Solveig&LABRUNE,%20Celine&AMOUROUX,%20Jean%20Michel&ESCOUBEYROU,%20Karine&rft.genre=article


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