Cold-Water Coral Mound Archive Provides Unique Insights Into Intermediate Water Mass Dynamics in the Alboran Sea During the Last Deglaciation
The Alboran Sea is widely recognized to host numerous cold-water coral ecosystems,including the East Melilla Coral Province. Yet, their development through timeand response to climatic variability has still to be fully understood. Based ona combined investigation of benthic foraminiferal assemblages...
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Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2020
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Online Access: | https://univ-angers.hal.science/hal-04278641 https://univ-angers.hal.science/hal-04278641/document https://univ-angers.hal.science/hal-04278641/file/fmars-07-00354.pdf https://doi.org/10.3389/fmars.2020.00354 |
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ftunivangershal:oai:HAL:hal-04278641v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Portail des publications scientifiques de l’Université d’Angers (HAL) |
op_collection_id |
ftunivangershal |
language |
English |
topic |
benthic foraminifera stable isotopes grain size Mediterranean paleoenvironment Bølling-Allerød benthic foraminifera stable isotopes grain size Mediterranean paleoenvironment Bølling-Allerød [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
benthic foraminifera stable isotopes grain size Mediterranean paleoenvironment Bølling-Allerød benthic foraminifera stable isotopes grain size Mediterranean paleoenvironment Bølling-Allerød [SDE.MCG]Environmental Sciences/Global Changes Fentimen, Robin Feenstra, Eline Rüggeberg, Andres Vennemann, Torsten Hajdas, Irka Adatte, Thierry van Rooij, David Foubert, Anneleen Cold-Water Coral Mound Archive Provides Unique Insights Into Intermediate Water Mass Dynamics in the Alboran Sea During the Last Deglaciation |
topic_facet |
benthic foraminifera stable isotopes grain size Mediterranean paleoenvironment Bølling-Allerød benthic foraminifera stable isotopes grain size Mediterranean paleoenvironment Bølling-Allerød [SDE.MCG]Environmental Sciences/Global Changes |
description |
The Alboran Sea is widely recognized to host numerous cold-water coral ecosystems,including the East Melilla Coral Province. Yet, their development through timeand response to climatic variability has still to be fully understood. Based ona combined investigation of benthic foraminiferal assemblages, foraminiferal stableisotope compositions, grain size analysis, sediment geochemistry, and macrofaunalquantification, this study identifies key events and processes having governed coldwatercoral development at the East Melilla Coral Province between Greenland Stadial2.1 and the Early Holocene. The transition from Greenland Stadial 2.1 to GreenlandInterstadial 1 is associated to a decline of bryozoan communities and their replacementby cold-water corals, together with changes in benthic foraminiferal assemblages and adecrease in the sediment mean grain size. These results suggest that a rapid decreasein bottom currents and the establishment of dysoxic and mesotrophic conditions atthe seafloor, possibly associated to enhanced fluvial input, resulted in the declineof bryozoans as the dominant suspension feeding organisms and their replacementby a thriving cold-water coral community. This transition from a bryozoan to a coraldominated environment is concomitant with the beginning of the African Humid Period,confirming that increasing fluvial input could have been a main factor triggering theestablishment of cold-water corals in the East Melilla Coral Province during GreenlandInterstadial 1. A change in benthic foraminiferal communities and an increase in thesediment mean grain size mark the passage from the Early to Late Greenland Interstadial1. The current velocity of intermediate water masses is suggested to have increasedduring the Early to Late Greenland Interstadial 1, whilst simultaneously fluvial input wouldhave reduced. Such changes suggest that the climate became more arid during thesecond phase of Greenland Interstadial 1. |
author2 |
Laboratoire de Planétologie et Géosciences UMR_C 6112 (LPG) Le Mans Université (UM)-Université d'Angers (UA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Nantes université - UFR des Sciences et des Techniques (Nantes univ - UFR ST) Nantes Université - pôle Sciences et technologie Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Sciences et technologie Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ) Department of Geosciences - Earth Sciences Fribourg Université de Fribourg = University of Fribourg (UNIFR) Université de Lausanne = University of Lausanne (UNIL) Departement Physik ETH Zürich (D-PHYS) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) Universiteit Gent = Ghent University (UGENT) Swiss National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Fentimen, Robin Feenstra, Eline Rüggeberg, Andres Vennemann, Torsten Hajdas, Irka Adatte, Thierry van Rooij, David Foubert, Anneleen |
author_facet |
Fentimen, Robin Feenstra, Eline Rüggeberg, Andres Vennemann, Torsten Hajdas, Irka Adatte, Thierry van Rooij, David Foubert, Anneleen |
author_sort |
Fentimen, Robin |
title |
Cold-Water Coral Mound Archive Provides Unique Insights Into Intermediate Water Mass Dynamics in the Alboran Sea During the Last Deglaciation |
title_short |
Cold-Water Coral Mound Archive Provides Unique Insights Into Intermediate Water Mass Dynamics in the Alboran Sea During the Last Deglaciation |
title_full |
Cold-Water Coral Mound Archive Provides Unique Insights Into Intermediate Water Mass Dynamics in the Alboran Sea During the Last Deglaciation |
title_fullStr |
Cold-Water Coral Mound Archive Provides Unique Insights Into Intermediate Water Mass Dynamics in the Alboran Sea During the Last Deglaciation |
title_full_unstemmed |
Cold-Water Coral Mound Archive Provides Unique Insights Into Intermediate Water Mass Dynamics in the Alboran Sea During the Last Deglaciation |
title_sort |
cold-water coral mound archive provides unique insights into intermediate water mass dynamics in the alboran sea during the last deglaciation |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://univ-angers.hal.science/hal-04278641 https://univ-angers.hal.science/hal-04278641/document https://univ-angers.hal.science/hal-04278641/file/fmars-07-00354.pdf https://doi.org/10.3389/fmars.2020.00354 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
ISSN: 2296-7745 Frontiers in Marine Science https://univ-angers.hal.science/hal-04278641 Frontiers in Marine Science, 2020, 7, ⟨10.3389/fmars.2020.00354⟩ https://www.frontiersin.org/articles/10.3389/fmars.2020.00354/full |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2020.00354 hal-04278641 https://univ-angers.hal.science/hal-04278641 https://univ-angers.hal.science/hal-04278641/document https://univ-angers.hal.science/hal-04278641/file/fmars-07-00354.pdf doi:10.3389/fmars.2020.00354 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/fmars.2020.0035410.3389/fmars.2020.00354/full |
_version_ |
1790600763463958528 |
spelling |
ftunivangershal:oai:HAL:hal-04278641v1 2024-02-11T10:04:13+01:00 Cold-Water Coral Mound Archive Provides Unique Insights Into Intermediate Water Mass Dynamics in the Alboran Sea During the Last Deglaciation Fentimen, Robin Feenstra, Eline Rüggeberg, Andres Vennemann, Torsten Hajdas, Irka Adatte, Thierry van Rooij, David Foubert, Anneleen Laboratoire de Planétologie et Géosciences UMR_C 6112 (LPG) Le Mans Université (UM)-Université d'Angers (UA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Nantes université - UFR des Sciences et des Techniques (Nantes univ - UFR ST) Nantes Université - pôle Sciences et technologie Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Sciences et technologie Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ) Department of Geosciences - Earth Sciences Fribourg Université de Fribourg = University of Fribourg (UNIFR) Université de Lausanne = University of Lausanne (UNIL) Departement Physik ETH Zürich (D-PHYS) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) Universiteit Gent = Ghent University (UGENT) Swiss National Science Foundation 2020-06-16 https://univ-angers.hal.science/hal-04278641 https://univ-angers.hal.science/hal-04278641/document https://univ-angers.hal.science/hal-04278641/file/fmars-07-00354.pdf https://doi.org/10.3389/fmars.2020.00354 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2020.00354 hal-04278641 https://univ-angers.hal.science/hal-04278641 https://univ-angers.hal.science/hal-04278641/document https://univ-angers.hal.science/hal-04278641/file/fmars-07-00354.pdf doi:10.3389/fmars.2020.00354 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2296-7745 Frontiers in Marine Science https://univ-angers.hal.science/hal-04278641 Frontiers in Marine Science, 2020, 7, ⟨10.3389/fmars.2020.00354⟩ https://www.frontiersin.org/articles/10.3389/fmars.2020.00354/full benthic foraminifera stable isotopes grain size Mediterranean paleoenvironment Bølling-Allerød benthic foraminifera stable isotopes grain size Mediterranean paleoenvironment Bølling-Allerød [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2020 ftunivangershal https://doi.org/10.3389/fmars.2020.0035410.3389/fmars.2020.00354/full 2024-01-24T17:19:12Z The Alboran Sea is widely recognized to host numerous cold-water coral ecosystems,including the East Melilla Coral Province. Yet, their development through timeand response to climatic variability has still to be fully understood. Based ona combined investigation of benthic foraminiferal assemblages, foraminiferal stableisotope compositions, grain size analysis, sediment geochemistry, and macrofaunalquantification, this study identifies key events and processes having governed coldwatercoral development at the East Melilla Coral Province between Greenland Stadial2.1 and the Early Holocene. The transition from Greenland Stadial 2.1 to GreenlandInterstadial 1 is associated to a decline of bryozoan communities and their replacementby cold-water corals, together with changes in benthic foraminiferal assemblages and adecrease in the sediment mean grain size. These results suggest that a rapid decreasein bottom currents and the establishment of dysoxic and mesotrophic conditions atthe seafloor, possibly associated to enhanced fluvial input, resulted in the declineof bryozoans as the dominant suspension feeding organisms and their replacementby a thriving cold-water coral community. This transition from a bryozoan to a coraldominated environment is concomitant with the beginning of the African Humid Period,confirming that increasing fluvial input could have been a main factor triggering theestablishment of cold-water corals in the East Melilla Coral Province during GreenlandInterstadial 1. A change in benthic foraminiferal communities and an increase in thesediment mean grain size mark the passage from the Early to Late Greenland Interstadial1. The current velocity of intermediate water masses is suggested to have increasedduring the Early to Late Greenland Interstadial 1, whilst simultaneously fluvial input wouldhave reduced. Such changes suggest that the climate became more arid during thesecond phase of Greenland Interstadial 1. Article in Journal/Newspaper Greenland Portail des publications scientifiques de l’Université d’Angers (HAL) Greenland |