Alternate Atlantic forest and climate phases during the early Pleistocene 41 kyr cycles in southeastern Brazil
International audience The early Pleistocene was driven by 41 kyr glacial cycles that have been rarely characterized in continental records, especially in South America. Most of long-term records derive from marine records (e.g. sea surface temperatures (SST)) and have been widely used to infer past...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2022
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Subjects: | |
Online Access: | https://hal-insu.archives-ouvertes.fr/insu-03690968 https://doi.org/10.1016/j.quascirev.2022.107560 |
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ftunivnantes:oai:HAL:insu-03690968v1 |
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openpolar |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Subtropical front Araucaria Southern Hemisphere Antarctic ice volume Tropical forest [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
Subtropical front Araucaria Southern Hemisphere Antarctic ice volume Tropical forest [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Rodríguez-Zorro, Paula A. Ledru, Marie-Pierre Favier, Charly Bard, Edouard Bicudo, Denise C. Garcia Molina, Marta Marquardt, Gisele Rostek, Frauke Sawakuchi, André O. Simon, Quentin Kazuyo, Tachikawa Alternate Atlantic forest and climate phases during the early Pleistocene 41 kyr cycles in southeastern Brazil |
topic_facet |
Subtropical front Araucaria Southern Hemisphere Antarctic ice volume Tropical forest [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The early Pleistocene was driven by 41 kyr glacial cycles that have been rarely characterized in continental records, especially in South America. Most of long-term records derive from marine records (e.g. sea surface temperatures (SST)) and have been widely used to infer past climate dynamics but implications for the continent have rarely been evaluated. We present an early Pleistocene record (COL17c) from the Colônia basin in the Atlantic forest domain in southeastern Brazil. Our aim was to integrate past environmental dynamics and the drivers of change between ca. 1.5 to 1.3 Myr at the latitude of Colônia (23°S; ca. 700 m a.s.l.). We applied a multi-proxy approach including pollen, charcoal, X-Ray fluorescence scanning (XRF), biomarkers and diatoms. We identified three glacial periods and four interglacials containing a continuous cool forest, mainly dominated by Araucaria. The glacial periods were characterized by increases in organic matter input on the lake, semi-deciduous forest, and shore and herbaceous vegetation. In contrast, the interglacials were marked by increases in evergreen forest and reduced organic matter input. We attribute these alternating phases of vegetation and lake productivity to meridional temperature differences that regulated the input of moisture at the latitude of Colônia. After 1.430 Myr, glacial and interglacial periods showed a different dynamism with an increase in Araucaria forests and drops in relative temperature, concomitant with regional long-trend cooling observed in marine records. The observed forest responses inferred from the COL17c record are in phase with regional climate features such as the development of the cold Pacific tongue and the equatorward migration of subpolar fronts, highlighting the strong influence of the Southern Hemisphere at Colônia during the early Pleistocene. |
author2 |
Institut des Sciences de l'Evolution de Montpellier (UMR ISEM) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Department of Biodiversity Conservation Environmental Research Institute University of Guarulhos Universidade de São Paulo = University of São Paulo (USP) |
format |
Article in Journal/Newspaper |
author |
Rodríguez-Zorro, Paula A. Ledru, Marie-Pierre Favier, Charly Bard, Edouard Bicudo, Denise C. Garcia Molina, Marta Marquardt, Gisele Rostek, Frauke Sawakuchi, André O. Simon, Quentin Kazuyo, Tachikawa |
author_facet |
Rodríguez-Zorro, Paula A. Ledru, Marie-Pierre Favier, Charly Bard, Edouard Bicudo, Denise C. Garcia Molina, Marta Marquardt, Gisele Rostek, Frauke Sawakuchi, André O. Simon, Quentin Kazuyo, Tachikawa |
author_sort |
Rodríguez-Zorro, Paula A. |
title |
Alternate Atlantic forest and climate phases during the early Pleistocene 41 kyr cycles in southeastern Brazil |
title_short |
Alternate Atlantic forest and climate phases during the early Pleistocene 41 kyr cycles in southeastern Brazil |
title_full |
Alternate Atlantic forest and climate phases during the early Pleistocene 41 kyr cycles in southeastern Brazil |
title_fullStr |
Alternate Atlantic forest and climate phases during the early Pleistocene 41 kyr cycles in southeastern Brazil |
title_full_unstemmed |
Alternate Atlantic forest and climate phases during the early Pleistocene 41 kyr cycles in southeastern Brazil |
title_sort |
alternate atlantic forest and climate phases during the early pleistocene 41 kyr cycles in southeastern brazil |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03690968 https://doi.org/10.1016/j.quascirev.2022.107560 |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 0277-3791 Quaternary Science Reviews https://hal-insu.archives-ouvertes.fr/insu-03690968 Quaternary Science Reviews, 2022, 286, ⟨10.1016/j.quascirev.2022.107560⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2022.107560 insu-03690968 https://hal-insu.archives-ouvertes.fr/insu-03690968 BIBCODE: 2022QSRv.28607560R doi:10.1016/j.quascirev.2022.107560 |
op_doi |
https://doi.org/10.1016/j.quascirev.2022.107560 |
container_title |
Quaternary Science Reviews |
container_volume |
286 |
container_start_page |
107560 |
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1766254278690734080 |
spelling |
ftunivnantes:oai:HAL:insu-03690968v1 2023-05-15T13:50:54+02:00 Alternate Atlantic forest and climate phases during the early Pleistocene 41 kyr cycles in southeastern Brazil Rodríguez-Zorro, Paula A. Ledru, Marie-Pierre Favier, Charly Bard, Edouard Bicudo, Denise C. Garcia Molina, Marta Marquardt, Gisele Rostek, Frauke Sawakuchi, André O. Simon, Quentin Kazuyo, Tachikawa Institut des Sciences de l'Evolution de Montpellier (UMR ISEM) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Department of Biodiversity Conservation Environmental Research Institute University of Guarulhos Universidade de São Paulo = University of São Paulo (USP) 2022 https://hal-insu.archives-ouvertes.fr/insu-03690968 https://doi.org/10.1016/j.quascirev.2022.107560 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2022.107560 insu-03690968 https://hal-insu.archives-ouvertes.fr/insu-03690968 BIBCODE: 2022QSRv.28607560R doi:10.1016/j.quascirev.2022.107560 ISSN: 0277-3791 Quaternary Science Reviews https://hal-insu.archives-ouvertes.fr/insu-03690968 Quaternary Science Reviews, 2022, 286, ⟨10.1016/j.quascirev.2022.107560⟩ Subtropical front Araucaria Southern Hemisphere Antarctic ice volume Tropical forest [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2022 ftunivnantes https://doi.org/10.1016/j.quascirev.2022.107560 2023-01-18T00:12:55Z International audience The early Pleistocene was driven by 41 kyr glacial cycles that have been rarely characterized in continental records, especially in South America. Most of long-term records derive from marine records (e.g. sea surface temperatures (SST)) and have been widely used to infer past climate dynamics but implications for the continent have rarely been evaluated. We present an early Pleistocene record (COL17c) from the Colônia basin in the Atlantic forest domain in southeastern Brazil. Our aim was to integrate past environmental dynamics and the drivers of change between ca. 1.5 to 1.3 Myr at the latitude of Colônia (23°S; ca. 700 m a.s.l.). We applied a multi-proxy approach including pollen, charcoal, X-Ray fluorescence scanning (XRF), biomarkers and diatoms. We identified three glacial periods and four interglacials containing a continuous cool forest, mainly dominated by Araucaria. The glacial periods were characterized by increases in organic matter input on the lake, semi-deciduous forest, and shore and herbaceous vegetation. In contrast, the interglacials were marked by increases in evergreen forest and reduced organic matter input. We attribute these alternating phases of vegetation and lake productivity to meridional temperature differences that regulated the input of moisture at the latitude of Colônia. After 1.430 Myr, glacial and interglacial periods showed a different dynamism with an increase in Araucaria forests and drops in relative temperature, concomitant with regional long-trend cooling observed in marine records. The observed forest responses inferred from the COL17c record are in phase with regional climate features such as the development of the cold Pacific tongue and the equatorward migration of subpolar fronts, highlighting the strong influence of the Southern Hemisphere at Colônia during the early Pleistocene. Article in Journal/Newspaper Antarc* Antarctic Université de Nantes: HAL-UNIV-NANTES Antarctic Pacific Quaternary Science Reviews 286 107560 |