Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11
Significant changes in atmospheric CO(2) over glacial-interglacial cycles have mainly been attributed to the Southern Ocean through physical and biological processes. However, little is known about the contribution of global biosphere productivity, associated with important CO(2) fluxes. Here we pre...
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ftpubmed:oai:pubmedcentral.nih.gov:7192893 2023-05-15T14:02:49+02:00 Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 Brandon, Margaux Landais, Amaelle Duchamp-Alphonse, Stéphanie Favre, Violaine Schmitz, Léa Abrial, Héloïse Prié, Frédéric Extier, Thomas Blunier, Thomas 2020-04-30 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7192893/ http://www.ncbi.nlm.nih.gov/pubmed/32355168 https://doi.org/10.1038/s41467-020-15739-2 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7192893/ http://www.ncbi.nlm.nih.gov/pubmed/32355168 http://dx.doi.org/10.1038/s41467-020-15739-2 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2020 ftpubmed https://doi.org/10.1038/s41467-020-15739-2 2020-05-10T00:27:39Z Significant changes in atmospheric CO(2) over glacial-interglacial cycles have mainly been attributed to the Southern Ocean through physical and biological processes. However, little is known about the contribution of global biosphere productivity, associated with important CO(2) fluxes. Here we present the first high resolution record of Δ(17)O of O(2) in the Antarctic EPICA Dome C ice core over Termination V and Marine Isotopic Stage (MIS) 11 and reconstruct the global oxygen biosphere productivity over the last 445 ka. Our data show that compared to the younger terminations, biosphere productivity at the end of Termination V is 10 to 30 % higher. Comparisons with local palaeo observations suggest that strong terrestrial productivity in a context of low eccentricity might explain this pattern. We propose that higher biosphere productivity could have maintained low atmospheric CO(2) at the beginning of MIS 11, thus highlighting its control on the global climate during Termination V. Text Antarc* Antarctic EPICA ice core Southern Ocean PubMed Central (PMC) Antarctic Southern Ocean The Antarctic Nature Communications 11 1 |
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Article Brandon, Margaux Landais, Amaelle Duchamp-Alphonse, Stéphanie Favre, Violaine Schmitz, Léa Abrial, Héloïse Prié, Frédéric Extier, Thomas Blunier, Thomas Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
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Significant changes in atmospheric CO(2) over glacial-interglacial cycles have mainly been attributed to the Southern Ocean through physical and biological processes. However, little is known about the contribution of global biosphere productivity, associated with important CO(2) fluxes. Here we present the first high resolution record of Δ(17)O of O(2) in the Antarctic EPICA Dome C ice core over Termination V and Marine Isotopic Stage (MIS) 11 and reconstruct the global oxygen biosphere productivity over the last 445 ka. Our data show that compared to the younger terminations, biosphere productivity at the end of Termination V is 10 to 30 % higher. Comparisons with local palaeo observations suggest that strong terrestrial productivity in a context of low eccentricity might explain this pattern. We propose that higher biosphere productivity could have maintained low atmospheric CO(2) at the beginning of MIS 11, thus highlighting its control on the global climate during Termination V. |
format |
Text |
author |
Brandon, Margaux Landais, Amaelle Duchamp-Alphonse, Stéphanie Favre, Violaine Schmitz, Léa Abrial, Héloïse Prié, Frédéric Extier, Thomas Blunier, Thomas |
author_facet |
Brandon, Margaux Landais, Amaelle Duchamp-Alphonse, Stéphanie Favre, Violaine Schmitz, Léa Abrial, Héloïse Prié, Frédéric Extier, Thomas Blunier, Thomas |
author_sort |
Brandon, Margaux |
title |
Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
title_short |
Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
title_full |
Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
title_fullStr |
Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
title_full_unstemmed |
Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
title_sort |
exceptionally high biosphere productivity at the beginning of marine isotopic stage 11 |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7192893/ http://www.ncbi.nlm.nih.gov/pubmed/32355168 https://doi.org/10.1038/s41467-020-15739-2 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic EPICA ice core Southern Ocean |
genre_facet |
Antarc* Antarctic EPICA ice core Southern Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7192893/ http://www.ncbi.nlm.nih.gov/pubmed/32355168 http://dx.doi.org/10.1038/s41467-020-15739-2 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-020-15739-2 |
container_title |
Nature Communications |
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11 |
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1 |
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1766273227029479424 |