An integrated palaeoenvironmental investigation of a 6200 year old peat sequence from Ile de la Possession, Iles Crozet, sub-Antarctica
International audience A 6200 year old peat sequence, cored in a volcanic crater on the sub-Antarctic Ile de la Possession (Iles Crozet), has been investigated, based on a multi-proxy approach. The methods applied are macrobotanical (mosses, seeds and fruits) and diatom analyses, complemented by geo...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Main Authors: | , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2008
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Subjects: | |
Online Access: | https://insu.hal.science/insu-00342423 https://insu.hal.science/insu-00342423/document https://insu.hal.science/insu-00342423/file/VanDerPutten-PPP-2008.pdf https://doi.org/10.1016/j.palaeo.2008.09.014 |
id |
ftunivavignon:oai:HAL:insu-00342423v1 |
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openpolar |
institution |
Open Polar |
collection |
Université d'Avignon et des Pays de Vaucluse: HAL |
op_collection_id |
ftunivavignon |
language |
English |
topic |
Palaeoecology Palaeoclimate Macrofossil record Rock magnetism Geochemical analysis Diatoms Iles Crozet Sub-Antarctic Holocene [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
Palaeoecology Palaeoclimate Macrofossil record Rock magnetism Geochemical analysis Diatoms Iles Crozet Sub-Antarctic Holocene [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment van Der Putten, N. Hébrard, J.P. Verbruggen, C. van de Vijver, B. Disnar, Jean-Robert Spassov, S. de Beaulieu, Jacques-Louis de Dapper, M. Kéravis, Didier Hus, Jozef Thouveny, Nicolas Frenot, Yves An integrated palaeoenvironmental investigation of a 6200 year old peat sequence from Ile de la Possession, Iles Crozet, sub-Antarctica |
topic_facet |
Palaeoecology Palaeoclimate Macrofossil record Rock magnetism Geochemical analysis Diatoms Iles Crozet Sub-Antarctic Holocene [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience A 6200 year old peat sequence, cored in a volcanic crater on the sub-Antarctic Ile de la Possession (Iles Crozet), has been investigated, based on a multi-proxy approach. The methods applied are macrobotanical (mosses, seeds and fruits) and diatom analyses, complemented by geochemical (Rock-Eval6) and rock magnetic measurements. The chronology of the core is based on 5 radiocarbon dates. When combining all the proxy data the following changes could be inferred. From the onset of the peat formation (6200 cal yr BP) until ca. 5550 cal yr BP, biological production was high and climatic conditions must have been relatively warm. At ca. 5550 cal yr BP a shift to low biological production occurred, lasting until ca. 4600 cal yr BP. During this period the organic matter is well preserved, pointing to a cold and/or wet environment. At ca. 4600 cal yr BP, biological production increased again. From ca. 4600 cal yr BP until ca. 4100 cal yr BP a “hollow and hummock” micro topography developed at the peat surface, resulting in the presence of a mixture of wetter and drier species in the macrobotanical record. After ca. 4100 cal yr BP, the wet species disappear and a generally drier, acidic bog came into existence. A major shift in all the proxy data is observed at ca. 2800 cal yr BP, pointing to wetter and especially windier climatic conditions on the island probably caused by an intensification and/or latitudinal shift of the southern westerly belt. Caused by a stronger wind regime, erosion of the peat surface occurred at that time and a lake was formed in the peat deposits of the crater, which is still present today. |
author2 |
Geography Department Universiteit Gent = Ghent University (UGENT) Institut Méditerranéen d'Ecologie et de Paléoécologie (IMEP) Université Paul Cézanne - Aix-Marseille 3-Université de Provence - Aix-Marseille 1-Avignon Université (AU)-Centre National de la Recherche Scientifique (CNRS) National Botanic Garden of Belgium Department of Cryptogamy Institut des Sciences de la Terre d'Orléans (ISTO) Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) Section du Magnétisme Environnemental Centre de Physique du Globe de l?Institut Royal Météorologique de Belgique Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) French Polar Institute (Programme IPEV 136) and the CNRS (Zone atelier de recherches sur l'environnement antarctique et subantarctique) |
format |
Article in Journal/Newspaper |
author |
van Der Putten, N. Hébrard, J.P. Verbruggen, C. van de Vijver, B. Disnar, Jean-Robert Spassov, S. de Beaulieu, Jacques-Louis de Dapper, M. Kéravis, Didier Hus, Jozef Thouveny, Nicolas Frenot, Yves |
author_facet |
van Der Putten, N. Hébrard, J.P. Verbruggen, C. van de Vijver, B. Disnar, Jean-Robert Spassov, S. de Beaulieu, Jacques-Louis de Dapper, M. Kéravis, Didier Hus, Jozef Thouveny, Nicolas Frenot, Yves |
author_sort |
van Der Putten, N. |
title |
An integrated palaeoenvironmental investigation of a 6200 year old peat sequence from Ile de la Possession, Iles Crozet, sub-Antarctica |
title_short |
An integrated palaeoenvironmental investigation of a 6200 year old peat sequence from Ile de la Possession, Iles Crozet, sub-Antarctica |
title_full |
An integrated palaeoenvironmental investigation of a 6200 year old peat sequence from Ile de la Possession, Iles Crozet, sub-Antarctica |
title_fullStr |
An integrated palaeoenvironmental investigation of a 6200 year old peat sequence from Ile de la Possession, Iles Crozet, sub-Antarctica |
title_full_unstemmed |
An integrated palaeoenvironmental investigation of a 6200 year old peat sequence from Ile de la Possession, Iles Crozet, sub-Antarctica |
title_sort |
integrated palaeoenvironmental investigation of a 6200 year old peat sequence from ile de la possession, iles crozet, sub-antarctica |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://insu.hal.science/insu-00342423 https://insu.hal.science/insu-00342423/document https://insu.hal.science/insu-00342423/file/VanDerPutten-PPP-2008.pdf https://doi.org/10.1016/j.palaeo.2008.09.014 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
ISSN: 0031-0182 EISSN: 1872-616X Palaeogeography, Palaeoclimatology, Palaeoecology https://insu.hal.science/insu-00342423 Palaeogeography, Palaeoclimatology, Palaeoecology, 2008, 270 (1-2), pp.179-195. ⟨10.1016/j.palaeo.2008.09.014⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2008.09.014 insu-00342423 https://insu.hal.science/insu-00342423 https://insu.hal.science/insu-00342423/document https://insu.hal.science/insu-00342423/file/VanDerPutten-PPP-2008.pdf doi:10.1016/j.palaeo.2008.09.014 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.palaeo.2008.09.014 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
270 |
container_issue |
1-2 |
container_start_page |
179 |
op_container_end_page |
195 |
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1802651425309720576 |
spelling |
ftunivavignon:oai:HAL:insu-00342423v1 2024-06-23T07:47:20+00:00 An integrated palaeoenvironmental investigation of a 6200 year old peat sequence from Ile de la Possession, Iles Crozet, sub-Antarctica van Der Putten, N. Hébrard, J.P. Verbruggen, C. van de Vijver, B. Disnar, Jean-Robert Spassov, S. de Beaulieu, Jacques-Louis de Dapper, M. Kéravis, Didier Hus, Jozef Thouveny, Nicolas Frenot, Yves Geography Department Universiteit Gent = Ghent University (UGENT) Institut Méditerranéen d'Ecologie et de Paléoécologie (IMEP) Université Paul Cézanne - Aix-Marseille 3-Université de Provence - Aix-Marseille 1-Avignon Université (AU)-Centre National de la Recherche Scientifique (CNRS) National Botanic Garden of Belgium Department of Cryptogamy Institut des Sciences de la Terre d'Orléans (ISTO) Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) Section du Magnétisme Environnemental Centre de Physique du Globe de l?Institut Royal Météorologique de Belgique Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) French Polar Institute (Programme IPEV 136) and the CNRS (Zone atelier de recherches sur l'environnement antarctique et subantarctique) 2008 https://insu.hal.science/insu-00342423 https://insu.hal.science/insu-00342423/document https://insu.hal.science/insu-00342423/file/VanDerPutten-PPP-2008.pdf https://doi.org/10.1016/j.palaeo.2008.09.014 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2008.09.014 insu-00342423 https://insu.hal.science/insu-00342423 https://insu.hal.science/insu-00342423/document https://insu.hal.science/insu-00342423/file/VanDerPutten-PPP-2008.pdf doi:10.1016/j.palaeo.2008.09.014 info:eu-repo/semantics/OpenAccess ISSN: 0031-0182 EISSN: 1872-616X Palaeogeography, Palaeoclimatology, Palaeoecology https://insu.hal.science/insu-00342423 Palaeogeography, Palaeoclimatology, Palaeoecology, 2008, 270 (1-2), pp.179-195. ⟨10.1016/j.palaeo.2008.09.014⟩ Palaeoecology Palaeoclimate Macrofossil record Rock magnetism Geochemical analysis Diatoms Iles Crozet Sub-Antarctic Holocene [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2008 ftunivavignon https://doi.org/10.1016/j.palaeo.2008.09.014 2024-06-10T23:49:39Z International audience A 6200 year old peat sequence, cored in a volcanic crater on the sub-Antarctic Ile de la Possession (Iles Crozet), has been investigated, based on a multi-proxy approach. The methods applied are macrobotanical (mosses, seeds and fruits) and diatom analyses, complemented by geochemical (Rock-Eval6) and rock magnetic measurements. The chronology of the core is based on 5 radiocarbon dates. When combining all the proxy data the following changes could be inferred. From the onset of the peat formation (6200 cal yr BP) until ca. 5550 cal yr BP, biological production was high and climatic conditions must have been relatively warm. At ca. 5550 cal yr BP a shift to low biological production occurred, lasting until ca. 4600 cal yr BP. During this period the organic matter is well preserved, pointing to a cold and/or wet environment. At ca. 4600 cal yr BP, biological production increased again. From ca. 4600 cal yr BP until ca. 4100 cal yr BP a “hollow and hummock” micro topography developed at the peat surface, resulting in the presence of a mixture of wetter and drier species in the macrobotanical record. After ca. 4100 cal yr BP, the wet species disappear and a generally drier, acidic bog came into existence. A major shift in all the proxy data is observed at ca. 2800 cal yr BP, pointing to wetter and especially windier climatic conditions on the island probably caused by an intensification and/or latitudinal shift of the southern westerly belt. Caused by a stronger wind regime, erosion of the peat surface occurred at that time and a lake was formed in the peat deposits of the crater, which is still present today. Article in Journal/Newspaper Antarc* Antarctic Antarctica Université d'Avignon et des Pays de Vaucluse: HAL Antarctic Palaeogeography, Palaeoclimatology, Palaeoecology 270 1-2 179 195 |