Mesoscale and submesoscale variability of organic matter in island-induced eddies across their life cycle: implications for the biological carbon pump

22 pages, 6 figures, 2 tables.-- The raw data supporting the conclusions of this article will be made available by the authors, without undue reservation

Detalhes bibliográficos
Autores: García García, José Luis, Arístegui, Javier, Pazo Fernández, María José, Vieitez Dos Santos, Vanesa, Hernández, Nauzet, Nieto-Cid, Mar, Gelado-Caballero, María Dolores, Martínez-Marrero, Antonio, Álvarez-Salgado, Xosé Antón
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2026
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::8b5087904bca1251ab669b574d2d73cf
Acesso em linha:http://hdl.handle.net/10261/428583
Access Level:acceso abierto
Palavra-chave:Canary Eddy Corridor
Chromophoric dissolved organic matter (CDOM)
Dissolved organic carbon (DOC)
Fluorescent dissolved organic matter (FDOM)
Subtropical northeast Atlantic Ocean
Suspended particulate organic carbon (POCsus)
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network_name_str España
repository_id_str
dc.title.none.fl_str_mv Mesoscale and submesoscale variability of organic matter in island-induced eddies across their life cycle: implications for the biological carbon pump
title Mesoscale and submesoscale variability of organic matter in island-induced eddies across their life cycle: implications for the biological carbon pump
spellingShingle Mesoscale and submesoscale variability of organic matter in island-induced eddies across their life cycle: implications for the biological carbon pump
García García, José Luis
Canary Eddy Corridor
Chromophoric dissolved organic matter (CDOM)
Dissolved organic carbon (DOC)
Fluorescent dissolved organic matter (FDOM)
Subtropical northeast Atlantic Ocean
Suspended particulate organic carbon (POCsus)
title_short Mesoscale and submesoscale variability of organic matter in island-induced eddies across their life cycle: implications for the biological carbon pump
title_full Mesoscale and submesoscale variability of organic matter in island-induced eddies across their life cycle: implications for the biological carbon pump
title_fullStr Mesoscale and submesoscale variability of organic matter in island-induced eddies across their life cycle: implications for the biological carbon pump
title_full_unstemmed Mesoscale and submesoscale variability of organic matter in island-induced eddies across their life cycle: implications for the biological carbon pump
title_sort Mesoscale and submesoscale variability of organic matter in island-induced eddies across their life cycle: implications for the biological carbon pump
dc.creator.none.fl_str_mv García García, José Luis
Arístegui, Javier
Pazo Fernández, María José
Vieitez Dos Santos, Vanesa
Hernández, Nauzet
Nieto-Cid, Mar
Gelado-Caballero, María Dolores
Martínez-Marrero, Antonio
Álvarez-Salgado, Xosé Antón
author García García, José Luis
author_facet García García, José Luis
Arístegui, Javier
Pazo Fernández, María José
Vieitez Dos Santos, Vanesa
Hernández, Nauzet
Nieto-Cid, Mar
Gelado-Caballero, María Dolores
Martínez-Marrero, Antonio
Álvarez-Salgado, Xosé Antón
author_role author
author2 Arístegui, Javier
Pazo Fernández, María José
Vieitez Dos Santos, Vanesa
Hernández, Nauzet
Nieto-Cid, Mar
Gelado-Caballero, María Dolores
Martínez-Marrero, Antonio
Álvarez-Salgado, Xosé Antón
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
European Commission
Ministerio de Ciencia, Innovación y Universidades (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Canary Eddy Corridor
Chromophoric dissolved organic matter (CDOM)
Dissolved organic carbon (DOC)
Fluorescent dissolved organic matter (FDOM)
Subtropical northeast Atlantic Ocean
Suspended particulate organic carbon (POCsus)
topic Canary Eddy Corridor
Chromophoric dissolved organic matter (CDOM)
Dissolved organic carbon (DOC)
Fluorescent dissolved organic matter (FDOM)
Subtropical northeast Atlantic Ocean
Suspended particulate organic carbon (POCsus)
description 22 pages, 6 figures, 2 tables.-- The raw data supporting the conclusions of this article will be made available by the authors, without undue reservation
publishDate 2026
dc.date.none.fl_str_mv 2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/428583
url http://hdl.handle.net/10261/428583
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-109084RB-C21
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-109084RB-C22
info:eu-repo/grantAgreement/EC/HE/101083922
https://doi.org/10.3389/fmars.2026.1711689
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dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
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
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spelling Mesoscale and submesoscale variability of organic matter in island-induced eddies across their life cycle: implications for the biological carbon pumpGarcía García, José LuisArístegui, JavierPazo Fernández, María JoséVieitez Dos Santos, VanesaHernández, NauzetNieto-Cid, MarGelado-Caballero, María DoloresMartínez-Marrero, AntonioÁlvarez-Salgado, Xosé AntónCanary Eddy CorridorChromophoric dissolved organic matter (CDOM)Dissolved organic carbon (DOC)Fluorescent dissolved organic matter (FDOM)Subtropical northeast Atlantic OceanSuspended particulate organic carbon (POCsus)22 pages, 6 figures, 2 tables.-- The raw data supporting the conclusions of this article will be made available by the authors, without undue reservationThe Canary Islands region exhibits intense mesoscale activity, with eddies generated south the islands by perturbations of the Canary Current. After detachment, these eddies drift southwestward along the Canary Eddy Corridor (CEC), exporting their properties into the open ocean. While mesoscale dynamics in the region are well documented, associated submesoscale structures and their role in the production, transport and remineralization of organic matter remain poorly understood. We investigated meso- and submesoscale variability of dissolved organic carbon (DOC), suspended particulate organic carbon (POCsus), and the chromophoric (CDOM) and fluorescent (FDOM) fractions of dissolved organic matter (DOM), at high spatial resolution across four eddies sampled in 2022. In summer, we studied three newly formed or developing eddies: the cyclonic Garajonay eddy, trapped between La Gomera and El Hierro Islands and sustaining an intense phytoplankton bloom and a developing eddy pair south of Gran Canaria (cyclonic Nublo) and Tenerife (anticyclonic Anaga). In autumn, we sampled Bentayga, a five- month-old anticyclonic intrathermocline eddy drifting along the CEC. Cyclonic eddies showed decreasing DOC, CDOM and protein-like FDOM with age, whereas anticyclonic eddies accumulated humic-like FDOM. At the submesoscale, DOC decreased above the pycnocline and humic-like FDOM below it across the Nublo-Anaga front, while Bentayga exhibited pronounced intra-eddy submesoscale variability in DOC, CDOM, and humic-like FDOM. The residuals of the multiple regression with the thermohaline variables of apparent oxygen utilization (ΔAOU), ΔDOC, ΔPOC, ΔCDOM and ΔFDOM, are independent of water mass mixing and physical motions, and therefore retain the biogeochemical variability associated with local processes. Significant correlations among the residuals of DOC/AOU, CDOM/AOU and FDOM/AOU highlight the central role of DOM in local remineralization, which accounts for up to 68 ± 15% of mesopelagic oxygen demand, resulting in the accumulation of humic-like substances and substantial consumption of chromophoric and protein-like materials. Furthermore, the combined residual relationships of DOC/AOU and POCsus/AOU indicate that up to 88% of mesopelagic oxygen demand in the CEC is driven by local remineralization of DOC and POCsus, suggesting only a minor contribution from sinking POM. Our results demonstrate that meso- and submesoscale processes strongly regulate organic matter transport, remineralization and oxygen consumption in the CECThe author(s) declared that financial support was received for this work and/or its publication. This research was funded by the e-IMPACT project (PID2019-109084RB-C21 and -C22) from JA and XA-S, supported by MCIN/AEI/10.13039/501100011033. XA-S and JA were also supported by the OceanICU project (HORIZON-CL6-2022-CLIMATE-01-02). This work was funded by the European Union under grant agreement no. 101083922 (OceanICU) and UK Research. JG was supported by a predoctoral fellowships from the Spanish Ministry of Science, Innovation and Universities (PRE2020-095806)Peer reviewedFrontiers MediaMinisterio de Ciencia e Innovación (España)European CommissionMinisterio de Ciencia, Innovación y Universidades (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262026info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/428583reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-109084RB-C21info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-109084RB-C22info:eu-repo/grantAgreement/EC/HE/101083922https://doi.org/10.3389/fmars.2026.1711689Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::8b5087904bca1251ab669b574d2d73cf2026-05-22T06:33:51Z
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