Aragonite saturation state in a continental shelf (Gulf of Cádiz, SW IberianPeninsula): Evidences of acidification in the coastal area
The spatiotemporal variability of aragonite saturation state (ΩAr) has been studied in the eastern shelf of the Gulf of Cádiz (GoC) (SW Iberian Peninsula). The study was carried out during the years 2014 and 2016 aboard twelve oceanographic cruises, along three or five transects, located between Cap...
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ftunivcadiz:oai:rodin.uca.es:10498/24928 2023-05-15T17:32:37+02:00 Aragonite saturation state in a continental shelf (Gulf of Cádiz, SW IberianPeninsula): Evidences of acidification in the coastal area Jiménez López, María Dolores Ortega Díaz, Teodora Sierra Padilla, Ana Ponce Alonso, María del Rocío Gómez Parra, Abelardo Forja Pajares, Jesús Química Física 2021-06-09T07:22:17Z application/pdf http://hdl.handle.net/10498/24928 https://doi.org/10.1016/j.scitotenv.2021.147858 eng eng ELSEVIER info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-100865-B-C21/ES/MODELIZACION DE LOS APORTES CONTINENTALES AL GOLFO DE CADIZ: DINAMICA DE LOS ESTUARIOS EN UN ESCENARIO DE CAMBIO CLIMATICO/ info:eu-repo/grantAgreement/MECD//FPU2014-04048/ES/FPU2014-04048/ 0048-9697 http://hdl.handle.net/10498/24928 doi:10.1016/j.scitotenv.2021.147858 Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess CC-BY Science of the Total Environment 787 (2021) 147858 Aragonite saturation state Calcium Gulf of Cádiz Ocean acidification Total alkalinity info:eu-repo/semantics/article 2021 ftunivcadiz https://doi.org/10.1016/j.scitotenv.2021.147858 2023-02-24T08:02:03Z The spatiotemporal variability of aragonite saturation state (ΩAr) has been studied in the eastern shelf of the Gulf of Cádiz (GoC) (SW Iberian Peninsula). The study was carried out during the years 2014 and 2016 aboard twelve oceanographic cruises, along three or five transects, located between Cape Trafalgar and the Guadiana River. The GoC exhibited oversaturated of calcium carbonate with ΩAr mean values of 2.68 ± 0.30 in surface and 2.05 ± 0.15 in deep waters. pH, total alkalinity (TA), calcium concentration (Ca2+) and ΩAr showed a high variability within the surface mixed layer (SML, z < 100 m). Biological activity seemed to be the main process to determine the ΩAr variability in the SML, revealing a greater importance than temperature, mixing or air-sea processes. The buffer factors of the CO2 system in the GoC have been estimated in the SML waters, and they are related with the biological activity and the temperature changes. A decrease of pH and ΩAr in this SML with depth was observed, due to the increase of the respiratory processes. In deep waters (z > 100 m), TA and Ca2+ concentration presented a conservative behaviour related to the distribution of the different water masses located in the GoC. The vertical variation of ΩAr also depends on the degree of mineralization of these water masses, obtaining the maximum values in the Subtropical North Atlantic Central Water (100–200 m), minimum values in the Subpolar North Atlantic Central Water (about 400 m), and intermediate values associated to the presence of the Mediterranean Water (>500 m). Results showed a significative acidification of the coastal areas, for those depths lower than 100 m from 2006 to 2016, with a mean decrease of pH and ΩAr of −0.0089 and −0.0552 yr−1, respectively. © 2021 The Authors This work was funded by the Spanish CICYT (Spanish Program for Science and Technology) under the contract RTI2018-100865-B-C21 . Dolores Jiménez-López was financed by the University of Cádiz with a FPI fellowship (FPI-UCA) and Ana Sierra was ... Article in Journal/Newspaper North Atlantic Ocean acidification RODIN - Repositorio de Objetos de Docencia e Investigación de la Universidad de Cádiz Dolores ENVELOPE(-58.433,-58.433,-62.233,-62.233) Jiménez ENVELOPE(-68.083,-68.083,-67.567,-67.567) Science of The Total Environment 787 147858 |
institution |
Open Polar |
collection |
RODIN - Repositorio de Objetos de Docencia e Investigación de la Universidad de Cádiz |
op_collection_id |
ftunivcadiz |
language |
English |
topic |
Aragonite saturation state Calcium Gulf of Cádiz Ocean acidification Total alkalinity |
spellingShingle |
Aragonite saturation state Calcium Gulf of Cádiz Ocean acidification Total alkalinity Jiménez López, María Dolores Ortega Díaz, Teodora Sierra Padilla, Ana Ponce Alonso, María del Rocío Gómez Parra, Abelardo Forja Pajares, Jesús Aragonite saturation state in a continental shelf (Gulf of Cádiz, SW IberianPeninsula): Evidences of acidification in the coastal area |
topic_facet |
Aragonite saturation state Calcium Gulf of Cádiz Ocean acidification Total alkalinity |
description |
The spatiotemporal variability of aragonite saturation state (ΩAr) has been studied in the eastern shelf of the Gulf of Cádiz (GoC) (SW Iberian Peninsula). The study was carried out during the years 2014 and 2016 aboard twelve oceanographic cruises, along three or five transects, located between Cape Trafalgar and the Guadiana River. The GoC exhibited oversaturated of calcium carbonate with ΩAr mean values of 2.68 ± 0.30 in surface and 2.05 ± 0.15 in deep waters. pH, total alkalinity (TA), calcium concentration (Ca2+) and ΩAr showed a high variability within the surface mixed layer (SML, z < 100 m). Biological activity seemed to be the main process to determine the ΩAr variability in the SML, revealing a greater importance than temperature, mixing or air-sea processes. The buffer factors of the CO2 system in the GoC have been estimated in the SML waters, and they are related with the biological activity and the temperature changes. A decrease of pH and ΩAr in this SML with depth was observed, due to the increase of the respiratory processes. In deep waters (z > 100 m), TA and Ca2+ concentration presented a conservative behaviour related to the distribution of the different water masses located in the GoC. The vertical variation of ΩAr also depends on the degree of mineralization of these water masses, obtaining the maximum values in the Subtropical North Atlantic Central Water (100–200 m), minimum values in the Subpolar North Atlantic Central Water (about 400 m), and intermediate values associated to the presence of the Mediterranean Water (>500 m). Results showed a significative acidification of the coastal areas, for those depths lower than 100 m from 2006 to 2016, with a mean decrease of pH and ΩAr of −0.0089 and −0.0552 yr−1, respectively. © 2021 The Authors This work was funded by the Spanish CICYT (Spanish Program for Science and Technology) under the contract RTI2018-100865-B-C21 . Dolores Jiménez-López was financed by the University of Cádiz with a FPI fellowship (FPI-UCA) and Ana Sierra was ... |
author2 |
Química Física |
format |
Article in Journal/Newspaper |
author |
Jiménez López, María Dolores Ortega Díaz, Teodora Sierra Padilla, Ana Ponce Alonso, María del Rocío Gómez Parra, Abelardo Forja Pajares, Jesús |
author_facet |
Jiménez López, María Dolores Ortega Díaz, Teodora Sierra Padilla, Ana Ponce Alonso, María del Rocío Gómez Parra, Abelardo Forja Pajares, Jesús |
author_sort |
Jiménez López, María Dolores |
title |
Aragonite saturation state in a continental shelf (Gulf of Cádiz, SW IberianPeninsula): Evidences of acidification in the coastal area |
title_short |
Aragonite saturation state in a continental shelf (Gulf of Cádiz, SW IberianPeninsula): Evidences of acidification in the coastal area |
title_full |
Aragonite saturation state in a continental shelf (Gulf of Cádiz, SW IberianPeninsula): Evidences of acidification in the coastal area |
title_fullStr |
Aragonite saturation state in a continental shelf (Gulf of Cádiz, SW IberianPeninsula): Evidences of acidification in the coastal area |
title_full_unstemmed |
Aragonite saturation state in a continental shelf (Gulf of Cádiz, SW IberianPeninsula): Evidences of acidification in the coastal area |
title_sort |
aragonite saturation state in a continental shelf (gulf of cádiz, sw iberianpeninsula): evidences of acidification in the coastal area |
publisher |
ELSEVIER |
publishDate |
2021 |
url |
http://hdl.handle.net/10498/24928 https://doi.org/10.1016/j.scitotenv.2021.147858 |
long_lat |
ENVELOPE(-58.433,-58.433,-62.233,-62.233) ENVELOPE(-68.083,-68.083,-67.567,-67.567) |
geographic |
Dolores Jiménez |
geographic_facet |
Dolores Jiménez |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_source |
Science of the Total Environment 787 (2021) 147858 |
op_relation |
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-100865-B-C21/ES/MODELIZACION DE LOS APORTES CONTINENTALES AL GOLFO DE CADIZ: DINAMICA DE LOS ESTUARIOS EN UN ESCENARIO DE CAMBIO CLIMATICO/ info:eu-repo/grantAgreement/MECD//FPU2014-04048/ES/FPU2014-04048/ 0048-9697 http://hdl.handle.net/10498/24928 doi:10.1016/j.scitotenv.2021.147858 |
op_rights |
Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.scitotenv.2021.147858 |
container_title |
Science of The Total Environment |
container_volume |
787 |
container_start_page |
147858 |
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1766130818179137536 |