Heterogeneity in global vegetation and terrestrial climate change during the late Eocene to early Oligocene transition
Rapid global cooling at the Eocene – Oligocene Transition (EOT), ~33.9–33.5 Ma, is widely considered to mark the onset of the modern icehouse world. A large and rapid drop in atmospheric pCO2 has been proposed as the driving force behind extinctions in the marine realm and glaciation on Antarctica....
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ftpubmed:oai:pubmedcentral.nih.gov:5324063 2023-05-15T13:52:44+02:00 Heterogeneity in global vegetation and terrestrial climate change during the late Eocene to early Oligocene transition Pound, Matthew J. Salzmann, Ulrich 2017-02-24 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5324063/ http://www.ncbi.nlm.nih.gov/pubmed/28233862 https://doi.org/10.1038/srep43386 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5324063/ http://www.ncbi.nlm.nih.gov/pubmed/28233862 http://dx.doi.org/10.1038/srep43386 Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2017 ftpubmed https://doi.org/10.1038/srep43386 2017-03-05T01:29:26Z Rapid global cooling at the Eocene – Oligocene Transition (EOT), ~33.9–33.5 Ma, is widely considered to mark the onset of the modern icehouse world. A large and rapid drop in atmospheric pCO2 has been proposed as the driving force behind extinctions in the marine realm and glaciation on Antarctica. However, the global terrestrial response to this cooling is uncertain. Here we present the first global vegetation and terrestrial temperature reconstructions for the EOT. Using an extensive palynological dataset, that has been statistically grouped into palaeo-biomes, we show a more transitional nature of terrestrial climate change by indicating a spatial and temporal heterogeneity of vegetation change at the EOT in both hemispheres. The reconstructed terrestrial temperatures show for many regions a cooling that started well before the EOT and continued into the Early Oligocene. We conclude that the heterogeneous pattern of global vegetation change has been controlled by a combination of multiple forcings, such as tectonics, sea-level fall and long-term decline in greenhouse gas concentrations during the late Eocene to early Oligocene, and does not represent a single response to a rapid decline in atmospheric pCO2 at the EOT. Text Antarc* Antarctica PubMed Central (PMC) Scientific Reports 7 1 |
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Article Pound, Matthew J. Salzmann, Ulrich Heterogeneity in global vegetation and terrestrial climate change during the late Eocene to early Oligocene transition |
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Article |
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Rapid global cooling at the Eocene – Oligocene Transition (EOT), ~33.9–33.5 Ma, is widely considered to mark the onset of the modern icehouse world. A large and rapid drop in atmospheric pCO2 has been proposed as the driving force behind extinctions in the marine realm and glaciation on Antarctica. However, the global terrestrial response to this cooling is uncertain. Here we present the first global vegetation and terrestrial temperature reconstructions for the EOT. Using an extensive palynological dataset, that has been statistically grouped into palaeo-biomes, we show a more transitional nature of terrestrial climate change by indicating a spatial and temporal heterogeneity of vegetation change at the EOT in both hemispheres. The reconstructed terrestrial temperatures show for many regions a cooling that started well before the EOT and continued into the Early Oligocene. We conclude that the heterogeneous pattern of global vegetation change has been controlled by a combination of multiple forcings, such as tectonics, sea-level fall and long-term decline in greenhouse gas concentrations during the late Eocene to early Oligocene, and does not represent a single response to a rapid decline in atmospheric pCO2 at the EOT. |
format |
Text |
author |
Pound, Matthew J. Salzmann, Ulrich |
author_facet |
Pound, Matthew J. Salzmann, Ulrich |
author_sort |
Pound, Matthew J. |
title |
Heterogeneity in global vegetation and terrestrial climate change during the late Eocene to early Oligocene transition |
title_short |
Heterogeneity in global vegetation and terrestrial climate change during the late Eocene to early Oligocene transition |
title_full |
Heterogeneity in global vegetation and terrestrial climate change during the late Eocene to early Oligocene transition |
title_fullStr |
Heterogeneity in global vegetation and terrestrial climate change during the late Eocene to early Oligocene transition |
title_full_unstemmed |
Heterogeneity in global vegetation and terrestrial climate change during the late Eocene to early Oligocene transition |
title_sort |
heterogeneity in global vegetation and terrestrial climate change during the late eocene to early oligocene transition |
publisher |
Nature Publishing Group |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5324063/ http://www.ncbi.nlm.nih.gov/pubmed/28233862 https://doi.org/10.1038/srep43386 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5324063/ http://www.ncbi.nlm.nih.gov/pubmed/28233862 http://dx.doi.org/10.1038/srep43386 |
op_rights |
Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
op_doi |
https://doi.org/10.1038/srep43386 |
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Scientific Reports |
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