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Carbon and nitrogen elemental and isotopic ratios of filter-feeding bivalves along the French coasts: An assessment of specific, geographic, seasonal and multi-decadal variations

dc.rights.licenseopenen_US
dc.contributor.authorBRIANT, Nicolas
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSAVOYE, Nicolas
ORCID: 0000-0001-6433-8519
IDREF: 067128637
dc.contributor.authorCHOUVELON, Tiphaine
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorDAVID, Valerie
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorRODRIGUEZ, Samuel
IDREF: 185733875
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCHARLIER, Karine
dc.contributor.authorSONKE, Jeroen E.
hal.structure.identifierUnité Biogéochimie et Ecotoxicologie [BE]
dc.contributor.authorCHIFFOLEAU, Jean-Francois
hal.structure.identifierLaboratoire Environnement Ressources Provence Azur Corse [LERPAC]
dc.contributor.authorBRACH-PAPA, Christophe
dc.contributor.authorKNOERY, Joel
dc.date.accessioned2024-03-18T09:27:49Z
dc.date.available2024-03-18T09:27:49Z
dc.date.issued2018-02
dc.identifier.issn0048-9697en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188828
dc.description.abstractEnPrimary consumers play a key role in coastal ecosystems by transferring organic matter from primary producers to predators. Among them, suspension-feeders, like bivalve molluscs are widely used in trophic web studies. The main goal of this study was to investigate variations of C and N elemental and isotopic ratios in common bivalves (M. edulis, M. galloprovincialis, and C. gigas) at large spatial (i.e. among three coastal regions) and different temporal (i.e. from seasonal to multi-decadal) scales in France, in order to identify potential general or specific patterns and speculate on their drivers.The observed spatial variability was related to the trophic status of the coastal regions (oligotrophic Mediterranean Sea versus meso- to eutrophic English Channel and Atlantic ocean), but not to ecosystem typology (estuaries, versus lagoons versus bays versus littoral systems). Furthermore, it highlighted local specificities in terms of the origin of the POM assimilated by bivalves (e.g., mainly continental POM vs. marine phytoplankton vs. microphytobenthic algae). Likewise, seasonal variability was related both to the reproduction cycle for C/N ratios of Mytilus spp. and to changes in trophic resources for δ13C of species located close to river mouth. Multi-decadal evolution exhibited shifts and trends for part of the 30-year series with decreases in δ13C and δ15N. Specifically, shifts appeared in the early 2000's, likely linking bivalve isotopic ratios to a cascade of processes affected by local drivers.
dc.language.isoENen_US
dc.title.enCarbon and nitrogen elemental and isotopic ratios of filter-feeding bivalves along the French coasts: An assessment of specific, geographic, seasonal and multi-decadal variations
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.scitotenv.2017.08.281en_US
dc.subject.halSciences du Vivant [q-bio]en_US
bordeaux.journalScience of the Total Environmenten_US
bordeaux.page196-207en_US
bordeaux.volume613-614en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamECOBIOCen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-04201943
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
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