Modern conditions and recent environmental evolution of the industrialized inner Ría of Ferrol (Galicia, NW Spain)

Galician rías provide several ecosystem services of great ecological and economic significance in the northwestern Iberian margin, requiring a good environmental quality for sustainable harnessing. More paleoenvironmental reconstructions extending to their preindustrial state are needed to predict t...

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Autores: Gardoki Díaz, Jon, Cearreta Bilbao, Alejandro, Irabien Gulias, María Jesús, Gómez Arozamena, José, Villasante Marcos, Víctor, García Artola, Ane, Galaz Samaniego, Carlos A., Peñalba, María Cristina, Bessa, Filipa
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/72858
Acceso en línea:http://hdl.handle.net/10810/72858
Access Level:acceso abierto
Palabra clave:benthic foraminifera
trace metals
pollen
microplastics
magnetic susceptibility
Ría of Ferrol
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dc.title.none.fl_str_mv Modern conditions and recent environmental evolution of the industrialized inner Ría of Ferrol (Galicia, NW Spain)
title Modern conditions and recent environmental evolution of the industrialized inner Ría of Ferrol (Galicia, NW Spain)
spellingShingle Modern conditions and recent environmental evolution of the industrialized inner Ría of Ferrol (Galicia, NW Spain)
Gardoki Díaz, Jon
benthic foraminifera
trace metals
pollen
microplastics
magnetic susceptibility
Ría of Ferrol
title_short Modern conditions and recent environmental evolution of the industrialized inner Ría of Ferrol (Galicia, NW Spain)
title_full Modern conditions and recent environmental evolution of the industrialized inner Ría of Ferrol (Galicia, NW Spain)
title_fullStr Modern conditions and recent environmental evolution of the industrialized inner Ría of Ferrol (Galicia, NW Spain)
title_full_unstemmed Modern conditions and recent environmental evolution of the industrialized inner Ría of Ferrol (Galicia, NW Spain)
title_sort Modern conditions and recent environmental evolution of the industrialized inner Ría of Ferrol (Galicia, NW Spain)
dc.creator.none.fl_str_mv Gardoki Díaz, Jon
Cearreta Bilbao, Alejandro
Irabien Gulias, María Jesús
Gómez Arozamena, José
Villasante Marcos, Víctor
García Artola, Ane
Galaz Samaniego, Carlos A.
Peñalba, María Cristina
Bessa, Filipa
author Gardoki Díaz, Jon
author_facet Gardoki Díaz, Jon
Cearreta Bilbao, Alejandro
Irabien Gulias, María Jesús
Gómez Arozamena, José
Villasante Marcos, Víctor
García Artola, Ane
Galaz Samaniego, Carlos A.
Peñalba, María Cristina
Bessa, Filipa
author_role author
author2 Cearreta Bilbao, Alejandro
Irabien Gulias, María Jesús
Gómez Arozamena, José
Villasante Marcos, Víctor
García Artola, Ane
Galaz Samaniego, Carlos A.
Peñalba, María Cristina
Bessa, Filipa
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv benthic foraminifera
trace metals
pollen
microplastics
magnetic susceptibility
Ría of Ferrol
topic benthic foraminifera
trace metals
pollen
microplastics
magnetic susceptibility
Ría of Ferrol
description Galician rías provide several ecosystem services of great ecological and economic significance in the northwestern Iberian margin, requiring a good environmental quality for sustainable harnessing. More paleoenvironmental reconstructions extending to their preindustrial state are needed to predict their evolution under natural and human-induced perturbations, such as ongoing anthropogenic global warming. This study’s aim is twofold: first, characterize the current environmental conditions governing the inner Ría of Ferrol (Galicia, NW Spain) and address its recent natural and anthropogenic evolution. Therefore, a multiproxy approach (benthic foraminifera, grain size, pollen content, trace metals, Al, total organic and inorganic carbon contents, total nitrogen content, δ13C, magnetic susceptibility, 210Pb and 137Cs radiotracers, and microplastics) has been applied to intertidal surface and sediment core samples. The benthic foraminiferal results exhibit typical inner ría assemblages, primarily driven by natural ría-estuarine dynamics, with a higher dominance of brackish species (H. germanica, A. morphogroup tepida), fewer living individuals and marine allochthonous taxa toward the continental end-member. The foraminiferal standing crops and surface trace metal concentrations do not reflect strong anthropogenic impacts, although areas with elevated magnetic susceptibility have been detected, probably associated with nearby industrial activities. The recent sedimentary deposits reveal anthropogenic impacts at local and regional scales, with different environmental shifts. Local impacts were triggered by physical interventions in the inner ría, with the construction of the As Pías Bridge in 1968 and the great urban-industrial development of Ferrol city and surrounding localities experienced since the late 19th century. Land-use changes have driven regional scale changes, corresponding to reforestation plans with the introduction of anthropogenic plant species for industrial purposes initiated in the 1940s. The stratigraphic analysis of sediment cores has unveiled high levels of contaminants (Zn and microplastics) in the innermost sector as the primary environmental concerns. In this sediment-infilling and restricted area, potential dredging activities could release them leading to their possible bioavailability. Although past adverse environmental conditions cannot be discarded, sedimentary intervals with negligible presence of microfauna in the innermost area have mostly been attributed to taphonomic processes involving calcareous dissolution and disaggregation of agglutinated tests, likely caused by carbonate-undersaturated conditions and organic matter metabolization by microbial activity respectively.
publishDate 2023
dc.date.none.fl_str_mv 2023
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/72858
url http://hdl.handle.net/10810/72858
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICIU/RTI2018-095678-B-C21/
https://www.sciencedirect.com/science/article/pii/S0278434323001759
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
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spelling Modern conditions and recent environmental evolution of the industrialized inner Ría of Ferrol (Galicia, NW Spain)Gardoki Díaz, JonCearreta Bilbao, AlejandroIrabien Gulias, María JesúsGómez Arozamena, JoséVillasante Marcos, VíctorGarcía Artola, AneGalaz Samaniego, Carlos A.Peñalba, María CristinaBessa, Filipabenthic foraminiferatrace metalspollenmicroplasticsmagnetic susceptibilityRía of FerrolGalician rías provide several ecosystem services of great ecological and economic significance in the northwestern Iberian margin, requiring a good environmental quality for sustainable harnessing. More paleoenvironmental reconstructions extending to their preindustrial state are needed to predict their evolution under natural and human-induced perturbations, such as ongoing anthropogenic global warming. This study’s aim is twofold: first, characterize the current environmental conditions governing the inner Ría of Ferrol (Galicia, NW Spain) and address its recent natural and anthropogenic evolution. Therefore, a multiproxy approach (benthic foraminifera, grain size, pollen content, trace metals, Al, total organic and inorganic carbon contents, total nitrogen content, δ13C, magnetic susceptibility, 210Pb and 137Cs radiotracers, and microplastics) has been applied to intertidal surface and sediment core samples. The benthic foraminiferal results exhibit typical inner ría assemblages, primarily driven by natural ría-estuarine dynamics, with a higher dominance of brackish species (H. germanica, A. morphogroup tepida), fewer living individuals and marine allochthonous taxa toward the continental end-member. The foraminiferal standing crops and surface trace metal concentrations do not reflect strong anthropogenic impacts, although areas with elevated magnetic susceptibility have been detected, probably associated with nearby industrial activities. The recent sedimentary deposits reveal anthropogenic impacts at local and regional scales, with different environmental shifts. Local impacts were triggered by physical interventions in the inner ría, with the construction of the As Pías Bridge in 1968 and the great urban-industrial development of Ferrol city and surrounding localities experienced since the late 19th century. Land-use changes have driven regional scale changes, corresponding to reforestation plans with the introduction of anthropogenic plant species for industrial purposes initiated in the 1940s. The stratigraphic analysis of sediment cores has unveiled high levels of contaminants (Zn and microplastics) in the innermost sector as the primary environmental concerns. In this sediment-infilling and restricted area, potential dredging activities could release them leading to their possible bioavailability. Although past adverse environmental conditions cannot be discarded, sedimentary intervals with negligible presence of microfauna in the innermost area have mostly been attributed to taphonomic processes involving calcareous dissolution and disaggregation of agglutinated tests, likely caused by carbonate-undersaturated conditions and organic matter metabolization by microbial activity respectively.This research was financially supported by RTI2018-095678-B-C21, MCIU/AEI/FEDER, UE (MINECO) and IT1616-22 (EJ/GV) projects. Jon Gardoki and Carlos Galaz are supported by predoctoral fellowships granted by the Basque Government (PRE_2020_1_0035) and Mexican Consejo Nacional de Ciencia y Tecnología (CONAHCYT 771105), respectively. Jordina Belmonte is also thanked for sharing laboratory facilities for pollen extraction at the Autonomous University of Barcelona. Filipa Bessa was supported by the University of Coimbra through the contract IT057-18-7252 and Portuguese Foundation for Science and Technology (FCT), I.P. through the strategic projects UIDB/04292/2020 and UIDP/04292/2020 granted to MARE and LA/P/0069/2020, granted to the Associate Laboratory ARNET.Elsevier202520252023info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/72858reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICIU/RTI2018-095678-B-C21/https://www.sciencedirect.com/science/article/pii/S0278434323001759info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/4.0/© 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY licenseoai:addi.ehu.eus:10810/728582026-06-18T09:23:17Z
score 15.811543

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