Using growth and geochemical composition of Clathromorphum compactum to track multiscale North Atlantic hydro-climate variability
International audience Records of ocean/atmosphere dynamics over the past centuries are essential to understand processes driving climate variability. This is particularly true for the Northwest Atlantic which is a key region with an essential role in global climate regulation. Over the past two dec...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2020
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Subjects: | |
Online Access: | https://doi.org/10.1016/j.palaeo.2020.110097 https://hal.archives-ouvertes.fr/hal-03015217 |
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fttriple:oai:gotriple.eu:10670/1.c1mj3k |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
ACL Climate change Sclerochronology Environmental reconstruction Coralline algae Environmental proxy geo socio |
spellingShingle |
ACL Climate change Sclerochronology Environmental reconstruction Coralline algae Environmental proxy geo socio Siebert, Valentin Poitevin, Pierre Chauvaud, Laurent Schöne, Bernd R. Lazure, Pascal Thébault, Julien Using growth and geochemical composition of Clathromorphum compactum to track multiscale North Atlantic hydro-climate variability |
topic_facet |
ACL Climate change Sclerochronology Environmental reconstruction Coralline algae Environmental proxy geo socio |
description |
International audience Records of ocean/atmosphere dynamics over the past centuries are essential to understand processes driving climate variability. This is particularly true for the Northwest Atlantic which is a key region with an essential role in global climate regulation. Over the past two decades, coralline red algae have been increasingly used as environmental and climatic archives for the marine realm and hold the potential to extend long-term instrumental measurements. Here, we investigate the possibility to extract climate and environmental information from annual growth patterns and geochemical composition of the coralline red algae, Clathromorphum compactum, from Saint-Pierre & Miquelon (SPM), a French archipelago southwest of Newfoundland. However, measurements of C. compactum growth trends is challenging due to difficulties in identifying annual growth lines directly. So far, growth pattern investigations were commonly performed based on geochemical data of coralline calcite matrix. Nonetheless, this method is expensive and therefore prevents from analyzing a large number of specimens that would be representative of the population. For this reason, we enhanced the growth line readability by staining polished sections with Mutvei's solution and performed growth analysis based on direct increment width measurements. Geochemical analyses were also carried out in order to validate the assumption that growth lines observed after staining were formed on an annual basis. Moreover, growth pattern and trace element composition were measured on multiple axes of several individuals in order to assess the intra- and inter-specimen variability and validate their use for paleoenvironmental reconstructions. Finally, relationships between the C. compactum sclerochronological records from SPM and environmental datasets covering different geographical areas allow a better knowledge of flow dynamics in the Northwest Atlantic and confirm the findings related to Arctica islandica from the same location. |
author2 |
Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut für Geowissenschaften Mainz Johannes Gutenberg - Universität Mainz (JGU) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Interdisciplinary Graduate School for the Blue planet ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) |
format |
Article in Journal/Newspaper |
author |
Siebert, Valentin Poitevin, Pierre Chauvaud, Laurent Schöne, Bernd R. Lazure, Pascal Thébault, Julien |
author_facet |
Siebert, Valentin Poitevin, Pierre Chauvaud, Laurent Schöne, Bernd R. Lazure, Pascal Thébault, Julien |
author_sort |
Siebert, Valentin |
title |
Using growth and geochemical composition of Clathromorphum compactum to track multiscale North Atlantic hydro-climate variability |
title_short |
Using growth and geochemical composition of Clathromorphum compactum to track multiscale North Atlantic hydro-climate variability |
title_full |
Using growth and geochemical composition of Clathromorphum compactum to track multiscale North Atlantic hydro-climate variability |
title_fullStr |
Using growth and geochemical composition of Clathromorphum compactum to track multiscale North Atlantic hydro-climate variability |
title_full_unstemmed |
Using growth and geochemical composition of Clathromorphum compactum to track multiscale North Atlantic hydro-climate variability |
title_sort |
using growth and geochemical composition of clathromorphum compactum to track multiscale north atlantic hydro-climate variability |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://doi.org/10.1016/j.palaeo.2020.110097 https://hal.archives-ouvertes.fr/hal-03015217 |
genre |
Arctica islandica Newfoundland North Atlantic Northwest Atlantic |
genre_facet |
Arctica islandica Newfoundland North Atlantic Northwest Atlantic |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0031-0182 Palaeogeography, Palaeoclimatology, Palaeoecology Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2020, Early view, pp.110097. ⟨10.1016/j.palaeo.2020.110097⟩ |
op_relation |
hal-03015217 doi:10.1016/j.palaeo.2020.110097 10670/1.c1mj3k https://hal.archives-ouvertes.fr/hal-03015217 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1016/j.palaeo.2020.110097 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
562 |
container_start_page |
110097 |
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1766353231404859392 |
spelling |
fttriple:oai:gotriple.eu:10670/1.c1mj3k 2023-05-15T15:22:36+02:00 Using growth and geochemical composition of Clathromorphum compactum to track multiscale North Atlantic hydro-climate variability Siebert, Valentin Poitevin, Pierre Chauvaud, Laurent Schöne, Bernd R. Lazure, Pascal Thébault, Julien Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut für Geowissenschaften Mainz Johannes Gutenberg - Universität Mainz (JGU) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Interdisciplinary Graduate School for the Blue planet ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) 2020-01-01 https://doi.org/10.1016/j.palaeo.2020.110097 https://hal.archives-ouvertes.fr/hal-03015217 en eng HAL CCSD Elsevier hal-03015217 doi:10.1016/j.palaeo.2020.110097 10670/1.c1mj3k https://hal.archives-ouvertes.fr/hal-03015217 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0031-0182 Palaeogeography, Palaeoclimatology, Palaeoecology Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2020, Early view, pp.110097. ⟨10.1016/j.palaeo.2020.110097⟩ ACL Climate change Sclerochronology Environmental reconstruction Coralline algae Environmental proxy geo socio Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.1016/j.palaeo.2020.110097 2023-01-22T18:12:12Z International audience Records of ocean/atmosphere dynamics over the past centuries are essential to understand processes driving climate variability. This is particularly true for the Northwest Atlantic which is a key region with an essential role in global climate regulation. Over the past two decades, coralline red algae have been increasingly used as environmental and climatic archives for the marine realm and hold the potential to extend long-term instrumental measurements. Here, we investigate the possibility to extract climate and environmental information from annual growth patterns and geochemical composition of the coralline red algae, Clathromorphum compactum, from Saint-Pierre & Miquelon (SPM), a French archipelago southwest of Newfoundland. However, measurements of C. compactum growth trends is challenging due to difficulties in identifying annual growth lines directly. So far, growth pattern investigations were commonly performed based on geochemical data of coralline calcite matrix. Nonetheless, this method is expensive and therefore prevents from analyzing a large number of specimens that would be representative of the population. For this reason, we enhanced the growth line readability by staining polished sections with Mutvei's solution and performed growth analysis based on direct increment width measurements. Geochemical analyses were also carried out in order to validate the assumption that growth lines observed after staining were formed on an annual basis. Moreover, growth pattern and trace element composition were measured on multiple axes of several individuals in order to assess the intra- and inter-specimen variability and validate their use for paleoenvironmental reconstructions. Finally, relationships between the C. compactum sclerochronological records from SPM and environmental datasets covering different geographical areas allow a better knowledge of flow dynamics in the Northwest Atlantic and confirm the findings related to Arctica islandica from the same location. Article in Journal/Newspaper Arctica islandica Newfoundland North Atlantic Northwest Atlantic Unknown Palaeogeography, Palaeoclimatology, Palaeoecology 562 110097 |