Distribution of dissolved organic matter in estuaries of the southern Iberian Atlantic Basin: Sources, behavior and export to the coastal zone

15 pages, 8 figures, 4 tables, supplementary data https://doi.org/10.1016/j.marchem.2020.103857

Detalles Bibliográficos
Autores: Amaral, Valentina, Romera-Castillo, Cristina, García-Delgado, M., Gómez-Parra, Abelardo, Forja, Jesús M.
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/222239
Acceso en línea:http://hdl.handle.net/10261/222239
Access Level:acceso abierto
Palabra clave:Dissolved organic matter
EEMs-PARAFAC
Pyrolisis-GC-MS
Carbon flux and tides
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dc.title.none.fl_str_mv Distribution of dissolved organic matter in estuaries of the southern Iberian Atlantic Basin: Sources, behavior and export to the coastal zone
title Distribution of dissolved organic matter in estuaries of the southern Iberian Atlantic Basin: Sources, behavior and export to the coastal zone
spellingShingle Distribution of dissolved organic matter in estuaries of the southern Iberian Atlantic Basin: Sources, behavior and export to the coastal zone
Amaral, Valentina
Dissolved organic matter
EEMs-PARAFAC
Pyrolisis-GC-MS
Carbon flux and tides
title_short Distribution of dissolved organic matter in estuaries of the southern Iberian Atlantic Basin: Sources, behavior and export to the coastal zone
title_full Distribution of dissolved organic matter in estuaries of the southern Iberian Atlantic Basin: Sources, behavior and export to the coastal zone
title_fullStr Distribution of dissolved organic matter in estuaries of the southern Iberian Atlantic Basin: Sources, behavior and export to the coastal zone
title_full_unstemmed Distribution of dissolved organic matter in estuaries of the southern Iberian Atlantic Basin: Sources, behavior and export to the coastal zone
title_sort Distribution of dissolved organic matter in estuaries of the southern Iberian Atlantic Basin: Sources, behavior and export to the coastal zone
dc.creator.none.fl_str_mv Amaral, Valentina
Romera-Castillo, Cristina
García-Delgado, M.
Gómez-Parra, Abelardo
Forja, Jesús M.
author Amaral, Valentina
author_facet Amaral, Valentina
Romera-Castillo, Cristina
García-Delgado, M.
Gómez-Parra, Abelardo
Forja, Jesús M.
author_role author
author2 Romera-Castillo, Cristina
García-Delgado, M.
Gómez-Parra, Abelardo
Forja, Jesús M.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Agencia Nacional de Investigación e Innovación (Uruguay)
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Dissolved organic matter
EEMs-PARAFAC
Pyrolisis-GC-MS
Carbon flux and tides
topic Dissolved organic matter
EEMs-PARAFAC
Pyrolisis-GC-MS
Carbon flux and tides
description 15 pages, 8 figures, 4 tables, supplementary data https://doi.org/10.1016/j.marchem.2020.103857
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Preprint
info:eu-repo/semantics/submittedVersion
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status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/222239
url http://hdl.handle.net/10261/222239
dc.language.none.fl_str_mv Inglés
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info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RTI2018-100865-B-C21
https://doi.org/10.1016/j.marchem.2020.103857
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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)
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spelling Distribution of dissolved organic matter in estuaries of the southern Iberian Atlantic Basin: Sources, behavior and export to the coastal zoneAmaral, ValentinaRomera-Castillo, CristinaGarcía-Delgado, M.Gómez-Parra, AbelardoForja, Jesús M.Dissolved organic matterEEMs-PARAFACPyrolisis-GC-MSCarbon flux and tides15 pages, 8 figures, 4 tables, supplementary data https://doi.org/10.1016/j.marchem.2020.103857The Gulf of Cádiz, located in the Southern Iberian Atlantic Basin, connects the North Atlantic Ocean and the Mediterranean Sea and receives freshwater input from three main estuaries: Guadalquivir, Guadiana, and Tinto-Odiel. These estuaries differ in their hydrology, basin characteristic, and land use. One of them, Tinto-Odiel, is one of the most polluted estuaries in the world. However, little is known about the export of DOM from these estuaries to the Gulf of Cádiz. In this work, the estuaries were sampled during the dry season. Dissolved organic matter (DOM) was chemically characterized along a longitudinal gradient to better understand the reactivity and fate of carbon exported to the Gulf of Cádiz. We also performed a tidal study at the mouth of each estuary to understand how the tide affects the composition of DOM and its export to the coastal zone. Fluorescent DOM (FDOM) modeling employing multivariate parallel factor analysis and pyrolysis-gas chromatography-mass spectroscopy analysis (Py-GC–MS) were used to characterize DOM. DOM from Guadalquivir and Guadiana estuaries presented a predominant allochthonous origin with humic-like compounds making up to ~80% of the total fluorescent DOM. These estuaries receive lateral inputs from surrounding watersheds and agricultural practices. Instead, in Tinto-Odiel estuary, DOM was predominantly autochthonous with a higher content of protein-like material associated with the prevalence of the marine influence over the low water discharges and anthropogenic pollution from industrial activities. Tidal cycles affected the distribution of DOM and its quality with higher humic-like material during low tide and protein-like substances predominating during high tide. During the dry season, the three estuaries represented a source of DOM to the Gulf of Cádiz. Guadalquivir was the main contributor with 1.25 Kg C s and 0.22 × 10 m s, for DOC and CDOM, respectively. Around 70% of the FDOM exported from the three estuaries was of humic nature. The results obtained in this work highlight the importance of local conditions, such as the basin characteristic and estuarine biogeochemical reactivity in the composition of the DOM exported to the coastal ocean. Moreover, Py-GC–MS analysis was a useful technique, complementary to fluorescence spectroscopy, which improves DOM characterization in estuarine systemsValentina 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 a Juan de la Cierva-Incorporación Postdoctoral Fellowship from the Spanish “Ministerio de Economía y Competitividad”. [...] This study was financed by the Spanish CICYT (Spanish Program for Science and Technology) under contracts CTM2014-59244-C3-1-R and RTI2018-100865-B-C21ElsevierAgencia Nacional de Investigación e Innovación (Uruguay)Ministerio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/222239reponame: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/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2014-59244-C3-1-Rinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RTI2018-100865-B-C21https://doi.org/10.1016/j.marchem.2020.103857Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2222392026-05-22T06:33:51Z
score 15,812429

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