Linkages between greenhouse gases (CO2, CH4, and N2O) and dissolved organic matter composition in a shallow estuary

14 pages, 9 figures, 4 tables

Detalles Bibliográficos
Autores: Amaral, Valentina, Ortega, Teodora, Romera-Castillo, Cristina, Forja, Jesús M.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/250228
Acceso en línea:http://hdl.handle.net/10261/250228
Access Level:acceso abierto
Palabra clave:Carbon dioxide
Methane
Nitrous oxide
Fluorescent DOM
Estuaries
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spelling Linkages between greenhouse gases (CO2, CH4, and N2O) and dissolved organic matter composition in a shallow estuaryAmaral, ValentinaOrtega, TeodoraRomera-Castillo, CristinaForja, Jesús M.Carbon dioxideMethaneNitrous oxideFluorescent DOMEstuaries14 pages, 9 figures, 4 tablesEstuarine systems receive large amounts of organic matter that enhance the production of greenhouse gases (GHGs), such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). Despite considerable research on GHGs and dissolved organic matter (DOM) distribution in estuaries, little is known about the linkage between these gases and DOM composition. Here we evaluated the relationship between three GHGs (CO2, CH4, and N2O) and DOM composition, determined through optical properties, in Guadalete estuary (Bay of Cadiz, Spain). The partial pressure of CO2, and CH4 and N2O concentrations ranged between 332.8 and 6807.1 μatm, 19.9–6440.1 nM, and 6.8–283.9 nM, respectively. Thus, the Guadalete estuary was a source of CO2, CH4 and N2O to the atmosphere. We validated three PARAFAC components related to humic-like fluorescence from terrestrial, microbial and effluent sources, and one with protein-like material. Humic-like components accounted for 86% ± 6% of the total FDOM pool, indicating a predominantly allochthonous DOM origin. The three GHGs were significantly linked to DOC concentration and DOM composition, exhibiting different patterns in these linkages. Terrestrial and microbial humic-like substances with increasing aromaticity might enhance pCO2 in Guadalete estuary. Dissolved CH4 concentrations showed the strongest relationship with DOM composition, indicating that humic and protein-like material are linked with their distribution. In contrast, dissolved N2O was only related with the protein-like fraction and with humic-like material derived from anthropogenic activities (sewage and agriculture). Our results further indicate that a possible coupling between benthic fluxes of GHGs and DOM might be occurring in this shallow estuary. We conclude that it is important to account for DOM composition when studying GHGs distribution in estuarine systems to understand their roles and potential responses associated with climate changeValentina Amaral was financed by the National Research and Innovation Agency of Uruguay (ANII) with a Ph.D. fellowship (POS_EXT_2015_1_122780). Cristina Romera-Castillo was funded by the Spanish Ministry of Science and Innovation through a JIN Project with reference PID2019-109889RJ-I00. This study was financed by the Spanish CICYT (Spanish Program for Science and Technology) under contract RTI2018-100865-B-C21With the institutional support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S)Peer reviewedElsevierAgencia Nacional de Investigación e Innovación (Uruguay)Ministerio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202120212021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/250228reponame: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/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-109889RJ-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-100865-B-C21https://doi.org/10.1016/j.scitotenv.2021.147863Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2502282026-05-22T06:33:51Z
dc.title.none.fl_str_mv Linkages between greenhouse gases (CO2, CH4, and N2O) and dissolved organic matter composition in a shallow estuary
title Linkages between greenhouse gases (CO2, CH4, and N2O) and dissolved organic matter composition in a shallow estuary
spellingShingle Linkages between greenhouse gases (CO2, CH4, and N2O) and dissolved organic matter composition in a shallow estuary
Amaral, Valentina
Carbon dioxide
Methane
Nitrous oxide
Fluorescent DOM
Estuaries
title_short Linkages between greenhouse gases (CO2, CH4, and N2O) and dissolved organic matter composition in a shallow estuary
title_full Linkages between greenhouse gases (CO2, CH4, and N2O) and dissolved organic matter composition in a shallow estuary
title_fullStr Linkages between greenhouse gases (CO2, CH4, and N2O) and dissolved organic matter composition in a shallow estuary
title_full_unstemmed Linkages between greenhouse gases (CO2, CH4, and N2O) and dissolved organic matter composition in a shallow estuary
title_sort Linkages between greenhouse gases (CO2, CH4, and N2O) and dissolved organic matter composition in a shallow estuary
dc.creator.none.fl_str_mv Amaral, Valentina
Ortega, Teodora
Romera-Castillo, Cristina
Forja, Jesús M.
author Amaral, Valentina
author_facet Amaral, Valentina
Ortega, Teodora
Romera-Castillo, Cristina
Forja, Jesús M.
author_role author
author2 Ortega, Teodora
Romera-Castillo, Cristina
Forja, Jesús M.
author2_role author
author
author
dc.contributor.none.fl_str_mv Agencia Nacional de Investigación e Innovación (Uruguay)
Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Carbon dioxide
Methane
Nitrous oxide
Fluorescent DOM
Estuaries
topic Carbon dioxide
Methane
Nitrous oxide
Fluorescent DOM
Estuaries
description 14 pages, 9 figures, 4 tables
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
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/10261/250228
url http://hdl.handle.net/10261/250228
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/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-109889RJ-I00
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-100865-B-C21
https://doi.org/10.1016/j.scitotenv.2021.147863
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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