Environmental Evolution of the Basque Coast Geopark Estuaries (Southern Bay of Biscay) During the Last 10.000 Years
In order to reconstruct the environmental evolution of the Deba and Urola estuaries located in the Basque Coast Geopark at millennial, centennial and decadal timescales, four long boreholes, three short cores and twelve surface samples were studied. Multiproxy analysis (foraminifera, trace metals an...
Published in: | Journal of Marine Systems |
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ftunivpaisvasco:oai:addi.ehu.es:10810/52527 2023-05-15T14:31:15+02:00 Environmental Evolution of the Basque Coast Geopark Estuaries (Southern Bay of Biscay) During the Last 10.000 Years Cearreta Bilbao, Alejandro Irabien Gulias, María Jesús Gómez Arozamena, José El bani Altuna, Naima Goffard Sevillano, Aintzane García Artola, Ane 2021-07 http://hdl.handle.net/10810/52527 https://doi.org/10.1016/j.jmarsys.2021.103557 eng eng Elsevier info:eu-repo/grantAgreement/MICINN/CGL2013-41083-P info:eu-repo/grantAgreement/MICINN/RTI2018-095678-B-C21 https://www-sciencedirect-com.ehu.idm.oclc.org/science/article/pii/S0924796321000555?via%3Dihub#! Journal Of Marine Systems 219 : (2021) // Article ID 103557 0924-7963 1879-1573 http://hdl.handle.net/10810/52527 doi:10.1016/j.jmarsys.2021.103557 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY-NC-ND 4.0) Atribución-NoComercial-SinDerivadas 3.0 España CC-BY-NC-ND CC-BY sedimentary record foraminifera trace metals radioisotopes Holocene Anthropocene heavy-metals Bilbao estuary sediment transport water contamination recovery proxies PB-210 impact info:eu-repo/semantics/article 2021 ftunivpaisvasco https://doi.org/10.1016/j.jmarsys.2021.103557 2022-03-10T16:40:55Z In order to reconstruct the environmental evolution of the Deba and Urola estuaries located in the Basque Coast Geopark at millennial, centennial and decadal timescales, four long boreholes, three short cores and twelve surface samples were studied. Multiproxy analysis (foraminifera, trace metals and radioisotopes) shows the temporal transformation of these estuaries in response to regional driving forces such as fresh-water discharge, relative sea-level (RSL) variation and the more recent impact of industrial development. At millennial and centennial timescales, the Deba estuary transformed from a tide-dominated to a river-dominated estuary at about 8000 yr cal BP following the decrease in RSL rise rate. This decrease also led to a reduction in both salinity and marine influence in the nearby tide-dominated Urola estuary. At decadal timescale, human disturbance on foraminiferal populations was found to be lower in the Deba estuary despite its higher level of contaminants in sediments. This was due to the greater impact of fresh-water discharge. In the Urola estuary, dredging operations altered severely the foraminiferal biota. This research was supported financially by Geoparkea-UPV/EHU (US13/02), Spanish MINECO (CGL2013-41083-P and RTI2018-095678-B-C21, MCIU/AEI/FEDER, UE), UPV/EHU (UFI11/09) and EJ/GV (IT365-10, IT767-13 and IT976-16) projects. NEA is supported by the Centre for Arctic Gas Hydrate, Environment and Climate (CAGE), the Research Council of Norway through its Centres of Excellence scheme (grant 223259) Article in Journal/Newspaper Arctic Gas Hydrate, Environment and Climate Arctic Foraminifera* ADDI: Repositorio Institucional de la Universidad del País Vasco (UPV) Arctic Norway Journal of Marine Systems 219 103557 |
institution |
Open Polar |
collection |
ADDI: Repositorio Institucional de la Universidad del País Vasco (UPV) |
op_collection_id |
ftunivpaisvasco |
language |
English |
topic |
sedimentary record foraminifera trace metals radioisotopes Holocene Anthropocene heavy-metals Bilbao estuary sediment transport water contamination recovery proxies PB-210 impact |
spellingShingle |
sedimentary record foraminifera trace metals radioisotopes Holocene Anthropocene heavy-metals Bilbao estuary sediment transport water contamination recovery proxies PB-210 impact Cearreta Bilbao, Alejandro Irabien Gulias, María Jesús Gómez Arozamena, José El bani Altuna, Naima Goffard Sevillano, Aintzane García Artola, Ane Environmental Evolution of the Basque Coast Geopark Estuaries (Southern Bay of Biscay) During the Last 10.000 Years |
topic_facet |
sedimentary record foraminifera trace metals radioisotopes Holocene Anthropocene heavy-metals Bilbao estuary sediment transport water contamination recovery proxies PB-210 impact |
description |
In order to reconstruct the environmental evolution of the Deba and Urola estuaries located in the Basque Coast Geopark at millennial, centennial and decadal timescales, four long boreholes, three short cores and twelve surface samples were studied. Multiproxy analysis (foraminifera, trace metals and radioisotopes) shows the temporal transformation of these estuaries in response to regional driving forces such as fresh-water discharge, relative sea-level (RSL) variation and the more recent impact of industrial development. At millennial and centennial timescales, the Deba estuary transformed from a tide-dominated to a river-dominated estuary at about 8000 yr cal BP following the decrease in RSL rise rate. This decrease also led to a reduction in both salinity and marine influence in the nearby tide-dominated Urola estuary. At decadal timescale, human disturbance on foraminiferal populations was found to be lower in the Deba estuary despite its higher level of contaminants in sediments. This was due to the greater impact of fresh-water discharge. In the Urola estuary, dredging operations altered severely the foraminiferal biota. This research was supported financially by Geoparkea-UPV/EHU (US13/02), Spanish MINECO (CGL2013-41083-P and RTI2018-095678-B-C21, MCIU/AEI/FEDER, UE), UPV/EHU (UFI11/09) and EJ/GV (IT365-10, IT767-13 and IT976-16) projects. NEA is supported by the Centre for Arctic Gas Hydrate, Environment and Climate (CAGE), the Research Council of Norway through its Centres of Excellence scheme (grant 223259) |
format |
Article in Journal/Newspaper |
author |
Cearreta Bilbao, Alejandro Irabien Gulias, María Jesús Gómez Arozamena, José El bani Altuna, Naima Goffard Sevillano, Aintzane García Artola, Ane |
author_facet |
Cearreta Bilbao, Alejandro Irabien Gulias, María Jesús Gómez Arozamena, José El bani Altuna, Naima Goffard Sevillano, Aintzane García Artola, Ane |
author_sort |
Cearreta Bilbao, Alejandro |
title |
Environmental Evolution of the Basque Coast Geopark Estuaries (Southern Bay of Biscay) During the Last 10.000 Years |
title_short |
Environmental Evolution of the Basque Coast Geopark Estuaries (Southern Bay of Biscay) During the Last 10.000 Years |
title_full |
Environmental Evolution of the Basque Coast Geopark Estuaries (Southern Bay of Biscay) During the Last 10.000 Years |
title_fullStr |
Environmental Evolution of the Basque Coast Geopark Estuaries (Southern Bay of Biscay) During the Last 10.000 Years |
title_full_unstemmed |
Environmental Evolution of the Basque Coast Geopark Estuaries (Southern Bay of Biscay) During the Last 10.000 Years |
title_sort |
environmental evolution of the basque coast geopark estuaries (southern bay of biscay) during the last 10.000 years |
publisher |
Elsevier |
publishDate |
2021 |
url |
http://hdl.handle.net/10810/52527 https://doi.org/10.1016/j.jmarsys.2021.103557 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic Gas Hydrate, Environment and Climate Arctic Foraminifera* |
genre_facet |
Arctic Gas Hydrate, Environment and Climate Arctic Foraminifera* |
op_relation |
info:eu-repo/grantAgreement/MICINN/CGL2013-41083-P info:eu-repo/grantAgreement/MICINN/RTI2018-095678-B-C21 https://www-sciencedirect-com.ehu.idm.oclc.org/science/article/pii/S0924796321000555?via%3Dihub#! Journal Of Marine Systems 219 : (2021) // Article ID 103557 0924-7963 1879-1573 http://hdl.handle.net/10810/52527 doi:10.1016/j.jmarsys.2021.103557 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY-NC-ND 4.0) Atribución-NoComercial-SinDerivadas 3.0 España |
op_rightsnorm |
CC-BY-NC-ND CC-BY |
op_doi |
https://doi.org/10.1016/j.jmarsys.2021.103557 |
container_title |
Journal of Marine Systems |
container_volume |
219 |
container_start_page |
103557 |
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1766304929509539840 |