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...
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Journal of Marine Systems
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Online Access: | http://hdl.handle.net/10810/62205 https://doi.org/10.1016/j.jmarsys.2021.103557 |
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ftunivpaisvasco:oai:addi.ehu.eus:10810/62205 2023-09-26T15:12:54+02:00 Environmental evolution of the Basque Coast Geopark estuaries (southern Bay of Biscay) during the last 10,000 years Cearreta, A. Irabien, M. J. Gómez Arozamena, J. E. El bani Altuna, N. Goffard, A. García-Artola, A. Centre for Arctic Gas Hydrate, Environment and Climate CAGE AEI MCIU UPV Geoparkea-UPV Research Council of Norway UE MINECO FEDER 2021-07-01 application/pdf http://hdl.handle.net/10810/62205 https://doi.org/10.1016/j.jmarsys.2021.103557 eng eng Journal of Marine Systems https://dx.doi.org/10.1016/j.jmarsys.2021.103557 Journal of Marine Systems: 219: 103557 (2021) http://hdl.handle.net/10810/62205 doi:10.1016/j.jmarsys.2021.103557 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/3.0/es/ ©The Authors Atribución-NoComercial-CompartirIgual 3.0 España Anthropocene Foraminifera Holocene Radioisotopes Sedimentary record Trace metals info:eu-repo/semantics/article 2021 ftunivpaisvasco https://doi.org/10.1016/j.jmarsys.2021.103557 2023-08-29T23:22:54Z 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. © 2021 The Authors 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 ). These funding sources were not involved in the study design, the collection, analysis and interpretation of data, the writing of the report, or the decision to submit the article for publication. 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 |
Anthropocene Foraminifera Holocene Radioisotopes Sedimentary record Trace metals |
spellingShingle |
Anthropocene Foraminifera Holocene Radioisotopes Sedimentary record Trace metals Cearreta, A. Irabien, M. J. Gómez Arozamena, J. E. El bani Altuna, N. Goffard, A. García-Artola, A. Environmental evolution of the Basque Coast Geopark estuaries (southern Bay of Biscay) during the last 10,000 years |
topic_facet |
Anthropocene Foraminifera Holocene Radioisotopes Sedimentary record Trace metals |
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. © 2021 The Authors 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 ). These funding sources were not involved in the study design, the collection, analysis and interpretation of data, the writing of the report, or the decision to submit the article for publication. |
author2 |
Centre for Arctic Gas Hydrate, Environment and Climate CAGE AEI MCIU UPV Geoparkea-UPV Research Council of Norway UE MINECO FEDER |
format |
Article in Journal/Newspaper |
author |
Cearreta, A. Irabien, M. J. Gómez Arozamena, J. E. El bani Altuna, N. Goffard, A. García-Artola, A. |
author_facet |
Cearreta, A. Irabien, M. J. Gómez Arozamena, J. E. El bani Altuna, N. Goffard, A. García-Artola, A. |
author_sort |
Cearreta, A. |
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 |
Journal of Marine Systems |
publishDate |
2021 |
url |
http://hdl.handle.net/10810/62205 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 |
https://dx.doi.org/10.1016/j.jmarsys.2021.103557 Journal of Marine Systems: 219: 103557 (2021) http://hdl.handle.net/10810/62205 doi:10.1016/j.jmarsys.2021.103557 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/3.0/es/ ©The Authors Atribución-NoComercial-CompartirIgual 3.0 España |
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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1778133380951441408 |