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dc.contributor.authorMartínez Ruiz, Francisca
dc.contributor.authorGonzález Muñoz, María Teresa 
dc.date.accessioned2021-02-11T12:01:27Z
dc.date.available2021-02-11T12:01:27Z
dc.date.issued2020
dc.identifier.citationMartinez-Ruiz F, Paytan A, GonzalezMuñoz MT, Jroundi F, Abad MM, Lam PJ, Horner TJ and Kastner M (2020) Barite Precipitation on Suspended Organic Matter in the Mesopelagic Zone. Front. Earth Sci. 8:567714. doi: 10.3389/feart.2020.567714es_ES
dc.identifier.urihttp://hdl.handle.net/10481/66466
dc.description.abstractMechanisms underlying barite precipitation in seawater and the precise depths of barite precipitation in the water column have been debated for decades. Here we present a detailed study of water column barite distribution in the mesopelagic zone at diverse stations in the open ocean by analyzing samples collected using multiple unit large volume in-situ filtration systems in the Pacific, Atlantic and Indian oceans. Our results demonstrate that barite is an organo-mineral particularly abundant at intermediate depths throughout the world’s ocean regardless of saturation state with respect to barite. This is confirming the notion of precipitation at depths of intense organic matter mineralization. Our observations further support the link between barite formation and microbial activity, demonstrated by the association of barite particles with organic matter aggregates and with extracellular polymeric substances. Evidence for microbial mediation is consistent with previous experimental work showing that in bacterial biofilms Ba binds to phosphate groups on cell surfaces and within extracellular polymeric substances. This organoaccumulation promotes high concentrations of Ba leading to saturated microenvironments and nucleation sites favoring precipitation. The distribution of Ba isotopes in the water column and in particulate matter is also consistent with the proposed precipitation mechanism.es_ES
dc.description.sponsorshipEuropean Union (EU)es_ES
dc.description.sponsorshipAgencia Estatal de Investigacion, Ministerio de Ciencia e Innovacion, Spain CGL2017-92600-EXP PID2019-104624RB-I00es_ES
dc.description.sponsorshipJunta de Andalucia RNM-179 BIO 103 P18-RT-3804 P18-RT-4074es_ES
dc.description.sponsorshipUnidad Cientifica de Excelencia (University of Granada) UCE-PP2016-05 OCE-1443577es_ES
dc.language.isoenges_ES
dc.publisherFRONTIERS MEDIA SAes_ES
dc.rightsAtribución 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subjectPelagic baritees_ES
dc.subjectOrgano-mineralizationes_ES
dc.subjectBarite saturation statees_ES
dc.subjectExtracellular polymeric substances (EPS)es_ES
dc.subjectBioaccumulationes_ES
dc.titleBarite Precipitation on Suspended Organic Matter in the Mesopelagic Zonees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doi10.3389/feart.2020.567714


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