Afficher la notice abrégée

Upside down sulphate dynamics in a saline inland lake

dc.rights.licenseopenen_US
dc.contributor.authorMARGALEF-MARTI, Rosanna
hal.structure.identifierInstitut d'écologie et des sciences de l'environnement de Paris [iEES Paris ]
dc.contributor.authorSEBILO, Mathieu
hal.structure.identifierInstitut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
dc.contributor.authorDE CHANVALON, Aubin Thibault
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorANSCHUTZ, Pierre
ORCID: 0000-0001-5331-7974
IDREF: 076300331
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCHARBONNIER, Celine
IDREF: 176318933
hal.structure.identifierInstitut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
dc.contributor.authorLAUGA, Béatrice
dc.contributor.authorGONZALEZ-ALVAREZ, Ivan
hal.structure.identifierInstitut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
dc.contributor.authorTESSIER, Emmanuel
hal.structure.identifierInstitut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
dc.contributor.authorAMOUROUX, David
dc.date.accessioned2024-02-14T10:50:38Z
dc.date.available2024-02-14T10:50:38Z
dc.date.issued2023-02-21
dc.identifier.issn2045-2322en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188127
dc.description.abstractEnThe sulphur cycle has a key role on the fate of nutrients through its several interconnected reactions. Although sulphur cycling in aquatic ecosystems has been thoroughly studied since the early 70's, its characterisation in saline endorheic lakes still deserves further exploration. Gallocanta Lake (NE Spain) is an ephemeral saline inland lake whose main sulphate source is found on the lake bed minerals and leads to dissolved sulphate concentrations higher than those of seawater. An integrative study including geochemical and isotopic characterization of surface water, porewater and sediment has been performed to address how sulphur cycling is constrained by the geological background. In freshwater and marine environments, sulphate concentration decreases with depth are commonly associated with bacterial sulphate reduction (BSR). However, in Gallocanta Lake sulphate concentrations in porewater increase from 60 mM at the water-sediment interface to 230 mM at 25 cm depth. This extreme increase could be caused by dissolution of the sulphate rich mineral epsomite (MgSO 4 •7H 2 O). Sulphur isotopic data was used to validate this hypothesis and demonstrate the occurrence of BSR near the water-sediment interface. This dynamic prevents methane production and release from the anoxic sediment, which is advantageous in the current context of global warming. These results underline that geological context should be considered in future biogeochemical studies of inland lakes with higher potential availability of electron acceptors in the lake bed compared to the water column.
dc.description.sponsorshipE2S - ANR-16-IDEX-0002en_US
dc.language.isoENen_US
dc.subject.enCDOM DOC Optical properties Pearl River Estuary Remote sensing
dc.subject.enCDOM
dc.subject.enDOC
dc.subject.enOptical properties
dc.subject.enPearl River Estuary
dc.subject.enRemote sensing
dc.title.enUpside down sulphate dynamics in a saline inland lake
dc.typeArticle de revueen_US
dc.identifier.doi10.1038/s41598-022-27355-9en_US
dc.subject.halChimieen_US
dc.subject.halChimie/Chimie analytiqueen_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalScientific Reportsen_US
bordeaux.page1845 - 1856en_US
bordeaux.volume13en_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-04000353
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=Scientific%20Reports&rft.date=2023-02-21&rft.volume=13&rft.spage=1845%20-%201856&rft.epage=1845%20-%201856&rft.eissn=2045-2322&rft.issn=2045-2322&rft.au=MARGALEF-MARTI,%20Rosanna&SEBILO,%20Mathieu&DE%20CHANVALON,%20Aubin%20Thibault&ANSCHUTZ,%20Pierre&CHARBONNIER,%20Celine&rft.genre=article


Fichier(s) constituant ce document

Thumbnail
Nom:
s41598-022-27355-9.pdf
Taille:
1.270Mo
Format:
PDF
Voir/Ouvrir

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée