Sources and fate of sedimentary organic matter in the Western Mediterranean Sea

18 pages, 8 figures, supporting information https://doi.org/10.1029/2023GB007695.-- Data Availability Statement: All the underlying data needed to understand, evaluate, and build upon the reported research is in the supporting information and accessible online in the Mendeley public repository under...

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Autores: Ausín, Blanca, Bossert, Gina, Krake, Nicola, Paradis Vilar, Sarah, Haghipour, Negar, Alonso, Belén, Eglinton, Timothy
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/335489
Acceso en línea:http://hdl.handle.net/10261/335489
Access Level:acceso abierto
Palabra clave:Organic carbon
Radiocarbon
Stable isotopes
Organo-mineral association
Carbon cycle
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spelling Sources and fate of sedimentary organic matter in the Western Mediterranean SeaAusín, BlancaBossert, GinaKrake, NicolaParadis Vilar, SarahHaghipour, NegarAlonso, BelénEglinton, TimothyOrganic carbonRadiocarbonStable isotopesOrgano-mineral associationCarbon cycle18 pages, 8 figures, supporting information https://doi.org/10.1029/2023GB007695.-- Data Availability Statement: All the underlying data needed to understand, evaluate, and build upon the reported research is in the supporting information and accessible online in the Mendeley public repository under Ausin et al. (2023) https://doi.org/10.17632/5rvgcz5ynh.1Marine sediments comprise the primary long-term sink of organic matter (OM) in marine systems. Disentangling the diverse origins of OM and the influence of the main processes that determine organic carbon (OC) fate at a global scale has proven difficult due to limited spatial data coverage. Thus, comprehensive studies of the spatial distribution of the content and geochemical characteristics of sedimentary OM at basin scales provide fundamental knowledge on the role of marine sediments in the global carbon cycle. Here, we shed light on the origin of OM and the underlying mechanisms that determine its fate in a semi-enclosed basin by examining the spatial patterns in the isotopic and elemental composition of OM in 149 core-top samples from the Western Mediterranean Sea and the adjacent Atlantic Ocean sector. Our results reveal an apparent SW-NE gradient that reverses in the Gulf of Lions in most geochemical and sedimentological features. Changes in the OC content and ẟ13C and Δ14C signatures are ascribed to spatial variations in marine primary productivity and the influence of varying discharge of rivers and well-developed canyons that favour the cross-shelf transport of terrestrial (and petrogenic) OC. Our results also suggest the potential influence of two other mechanisms on the geochemical signatures of OM: i) lateral transport of allochthonous OC and selective degradation of labile OM, which potentially occurs across the studied area having a greater impact towards the north-eastern region, and ii) OM protection via association with mineral surfaces, potentially having a greater influence towards the south-western basinsSamples off W Portugal were collected during Cruise 089 aboard the RSS James Cook, that wasmade possible with support from the UK Natural Environmental Research Council (NERC Grant NE/J00653X/1). This study was supported by the project TRAMPOLINE (200021_175823) funded by Swiss National Science Foundation and the project PASSAGE (Grant agreement No 101039348) from the ERC under the European Union’s Horizon 2020 research and innovation programWith the institutional support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S)Peer reviewedAmerican Geophysical UnionNatural Environment Research Council (UK)Swiss National Science FoundationEuropean CommissionAgencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202320232023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/335489reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/HE/101039348info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2019-000928-Shttps://doi.org/10.1029/2023GB007695Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3354892026-05-22T06:33:51Z
dc.title.none.fl_str_mv Sources and fate of sedimentary organic matter in the Western Mediterranean Sea
title Sources and fate of sedimentary organic matter in the Western Mediterranean Sea
spellingShingle Sources and fate of sedimentary organic matter in the Western Mediterranean Sea
Ausín, Blanca
Organic carbon
Radiocarbon
Stable isotopes
Organo-mineral association
Carbon cycle
title_short Sources and fate of sedimentary organic matter in the Western Mediterranean Sea
title_full Sources and fate of sedimentary organic matter in the Western Mediterranean Sea
title_fullStr Sources and fate of sedimentary organic matter in the Western Mediterranean Sea
title_full_unstemmed Sources and fate of sedimentary organic matter in the Western Mediterranean Sea
title_sort Sources and fate of sedimentary organic matter in the Western Mediterranean Sea
dc.creator.none.fl_str_mv Ausín, Blanca
Bossert, Gina
Krake, Nicola
Paradis Vilar, Sarah
Haghipour, Negar
Alonso, Belén
Eglinton, Timothy
author Ausín, Blanca
author_facet Ausín, Blanca
Bossert, Gina
Krake, Nicola
Paradis Vilar, Sarah
Haghipour, Negar
Alonso, Belén
Eglinton, Timothy
author_role author
author2 Bossert, Gina
Krake, Nicola
Paradis Vilar, Sarah
Haghipour, Negar
Alonso, Belén
Eglinton, Timothy
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Natural Environment Research Council (UK)
Swiss National Science Foundation
European Commission
Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Organic carbon
Radiocarbon
Stable isotopes
Organo-mineral association
Carbon cycle
topic Organic carbon
Radiocarbon
Stable isotopes
Organo-mineral association
Carbon cycle
description 18 pages, 8 figures, supporting information https://doi.org/10.1029/2023GB007695.-- Data Availability Statement: All the underlying data needed to understand, evaluate, and build upon the reported research is in the supporting information and accessible online in the Mendeley public repository under Ausin et al. (2023) https://doi.org/10.17632/5rvgcz5ynh.1
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/335489
url http://hdl.handle.net/10261/335489
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/HE/101039348
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2019-000928-S
https://doi.org/10.1029/2023GB007695
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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