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Exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica

dc.rights.licenseopenen_US
hal.structure.identifierSchool of Geography, Earth and Environmental Sciences [Birmingham]
dc.contributor.authorASHLEY, Kate E.
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCROSTA, Xavier
hal.structure.identifierÉcole Pratique des Hautes Études [EPHE]
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorETOURNEAU, Johan
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCAMPAGNE, Philippine
hal.structure.identifierSchool of Geography, Earth and Environmental Sciences [Birmingham]
dc.contributor.authorGILCHRIST, Harry
hal.structure.identifierSchool of Geography, Earth and Environmental Sciences [Birmingham]
dc.contributor.authorIBRAHEEM, Uthmaan
hal.structure.identifierSchool of Geography, Earth and Environmental Sciences [Birmingham]
dc.contributor.authorGREENE, Sarah
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSCHMIDT, Sabine
IDREF: 131836129
hal.structure.identifierSchool of Geography, Earth and Environmental Sciences [Birmingham]
dc.contributor.authorELEY, Yvette
hal.structure.identifierTakuvik International Research Laboratory
hal.structure.identifierVariabilité de l'Océan et de la Glace de mer [LOCEAN-VOG]
dc.contributor.authorMASSÉ, Guillaume
hal.structure.identifierSchool of Geography, Earth and Environmental Sciences [Birmingham]
dc.contributor.authorBENDLE, James
dc.date.accessioned2024-03-04T11:27:14Z
dc.date.available2024-03-04T11:27:14Z
dc.date.issued2021-10-14
dc.identifier.issn1726-4170en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188558
dc.description.abstractEnThe Antarctic coastal zone is an area of high primary productivity, particularly within coastal polynyas, where large phytoplankton blooms and drawdown of CO2 occur. Reconstruction of historical primary productivity changes and the associated driving factors could provide baseline insights on the role of these areas as sinks for atmospheric CO2 , especially in the context of projected changes in coastal Antarctic sea ice. Here we investigate the potential for using carbon isotopes (δ13C) of fatty acids in marine sediments as a proxy for primary productivity. We use a highly resolved sediment core from off the coast of Adélie Land spanning the last ∼ 400 years and monitor changes in the concentrations and δ13C of fatty acids along with other proxy data from the same core. We discuss the different possible drivers of their variability and argue that C24fatty acid δ13C predominantly reflects phytoplankton productivity in openwater environments, while C18 fatty acid δ13C reflects productivity in the marginal ice zone. These new proxies have implications for better understanding carbon cycle dynamics in the Antarctica coastal zone in future palaeoclimate studies.
dc.language.isoENen_US
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.title.enExploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica
dc.typeArticle de revueen_US
dc.identifier.doi10.5194/bg-18-5555-2021en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Climatologieen_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Océanographieen_US
dc.subject.halPlanète et Univers [physics]/Océan, Atmosphèreen_US
dc.description.sponsorshipEuropeNovel Lipid Biomarkers from Polar Ice: Climatic and Ecological Applications.en_US
bordeaux.journalBiogeosciencesen_US
bordeaux.page5555-5571en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamPALEOen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-03378695
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccCC BYen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Biogeosciences&rft.date=2021-10-14&rft.spage=5555-5571&rft.epage=5555-5571&rft.eissn=1726-4170&rft.issn=1726-4170&rft.au=ASHLEY,%20Kate%20E.&CROSTA,%20Xavier&ETOURNEAU,%20Johan&CAMPAGNE,%20Philippine&GILCHRIST,%20Harry&rft.genre=article


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