Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/119240
Campo DC Valoridioma
dc.contributor.authorGómez Letona, Markelen_US
dc.contributor.authorSebastián, Men_US
dc.contributor.authorBaños Cerón, María Isabelen_US
dc.contributor.authorGonzalez Perez, Acoraydaen_US
dc.contributor.authorHernández Hernández, Nauzeten_US
dc.contributor.authorMontero del Pino, María F.en_US
dc.contributor.authorBaumann, M.en_US
dc.contributor.authorRiebesell, U.en_US
dc.contributor.authorArístegui Ruiz, Javieren_US
dc.date.accessioned2022-11-10T12:09:47Z-
dc.date.available2022-11-10T12:09:47Z-
dc.date.issued2023en_US
dc.identifier.isbn978-84-9042-477-3en_US
dc.identifier.urihttp://hdl.handle.net/10553/119240-
dc.description.abstractIn the face of climate change there is a need to reduce atmospheric CO2 concentrations. Artificial upwelling of nutrient-rich deep waters has been proposed as a method to enhance the biological carbon pump in oligotrophic oceanic regions in order to fuel carbon sequestration. However, the fate of the newly produced organic matter, and specifically of its resulting dissolved fraction, is not clearly understood. In the present work, nutrient-rich deep water was introduced to large scale (~44 m3) mesocosms in the oligotrophic subtropical North Atlantic with the aim of studying how the intensity and mode of artificial upwelling (large single pulses vs recurring smaller pulses) affects the dissolved organic matter (DOM) pool. Artificial upwelling yielded marked increases in the concentration and shifts in the characteristics of DOM. The magnitude of the observed changes was mostly related to the upwelling intensity: more intense treatments led to higher accumulation of dissolved organic carbon (>70 μM of excess DOC over ambient waters for extreme treatments), as well as increases in the concentration and average molecular weight of chromophoric DOM (CDOM) and the intensification of humic-like fluorescent DOM, suggesting transformation of the DOM pool. The artificial upwelling mode also affected DOM, with singular treatments overall resulting in higher CDOM quantities and molecular weight than recurring treatments. Our results indicate that under artificial upwelling, large DOM pools may accumulate in the surface ocean without being remineralised in the shortterm. This persistence could be associated with a combination of the molecular diversification of DOM due to microbial reworking, nutrient limitation and reduced metabolic capabilities of the prokaryotic communities inside the mesocosms. The present study highlights the importance of considering DOC when assessing the carbon sequestration potential of artificial upwelling.en_US
dc.languageengen_US
dc.publisherServicio de Publicaciones y Difusión Científica de la Universidad de Las Palmas de Gran Canaria (ULPGC)en_US
dc.sourceAbstracts Volume VIII International Symposium on Marine Sciences, July 2022 / coordinación, María Esther Torres Padrón, p. 83en_US
dc.subject251001 Oceanografía biológicaen_US
dc.subject251002 Oceanografía químicaen_US
dc.subject.otherDissolved organic matteren_US
dc.subject.otherCarbon sequestrationen_US
dc.subject.otherNegative emission technologiesen_US
dc.subject.otherArtificial upwellingen_US
dc.subject.otherMesocosmen_US
dc.titleArtificial upwelling intensity and mode have a major imprint in dissolved organic matter dynamicsen_US
dc.typeinfo:eu-repo/semantics/lectureen_US
dc.typeLectureen_US
dc.relation.conferenceVIII International Symposium on Marine Sciences (ISMS 2022)en_US
dc.description.firstpage83en_US
dc.investigacionCienciasen_US
dc.type2Ponenciaen_US
dc.description.numberofpages1en_US
dc.utils.revisionen_US
dc.identifier.ulpgcen_US
dc.contributor.buulpgcBU-BASen_US
dc.contributor.buulpgcBU-BASen_US
dc.contributor.buulpgcBU-BASen_US
dc.contributor.buulpgcBU-BASen_US
item.grantfulltextopen-
item.fulltextCon texto completo-
crisitem.author.deptGIR IOCAG: Oceanografía Biológica y Algología Aplicada-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptGIR IOCAG: Oceanografía Biológica y Algología Aplicada-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptGIR IOCAG: Oceanografía Biológica y Algología Aplicada-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptGIR IOCAG: Oceanografía Biológica y Algología Aplicada-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Biología-
crisitem.author.deptGIR IOCAG: Oceanografía Biológica y Algología Aplicada-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Biología-
crisitem.author.orcid0000-0003-1503-4214-
crisitem.author.orcid0000-0001-8124-8136-
crisitem.author.orcid0000-0002-7526-7741-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.fullNameGómez Letona,Markel-
crisitem.author.fullNameBaños Cerón, María Isabel-
crisitem.author.fullNameGonzalez Perez,Acorayda-
crisitem.author.fullNameHernandez Hernandez,Nauzet-
crisitem.author.fullNameMontero Del Pino, María Fernanda-
crisitem.author.fullNameArístegui Ruiz, Javier-
crisitem.event.eventsstartdate06-07-2022-
crisitem.event.eventsenddate08-07-2022-
Colección:Ponencias
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