Impact of mid Eocene greenhouse warming on America’s southernmost floras
A major climate shift took place about 40 Myr ago—the Middle Eocene Climatic Optimum or MECO—triggered by a significant rise of atmospheric CO2 concentrations. The biotic response to this MECO is well documented in the marine realm, but poorly explored in adjacent landmasses. Here, we quantify the r...
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ftconicet:oai:ri.conicet.gov.ar:11336/137904 2023-10-09T21:45:12+02:00 Impact of mid Eocene greenhouse warming on America’s southernmost floras Fernández, Damián Andrés Palazzesi, Luis González Estebenet, María Sol Tellería, María Cristina Barreda, Viviana Dora application/pdf http://hdl.handle.net/11336/137904 eng eng Nature info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s42003-021-01701-5 info:eu-repo/semantics/altIdentifier/doi/10.1038/s42003-021-01701-5 http://hdl.handle.net/11336/137904 Fernández, Damián Andrés; Palazzesi, Luis; González Estebenet, María Sol; Tellería, María Cristina; Barreda, Viviana Dora; Impact of mid Eocene greenhouse warming on America’s southernmost floras; Nature; Communications Biology; 4; 176; 9-12-2021; 1-9 2399-3642 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ Eocene Greenhouse Patagonia Floras https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1038/s42003-021-01701-5 2023-09-24T20:32:16Z A major climate shift took place about 40 Myr ago—the Middle Eocene Climatic Optimum or MECO—triggered by a significant rise of atmospheric CO2 concentrations. The biotic response to this MECO is well documented in the marine realm, but poorly explored in adjacent landmasses. Here, we quantify the response of the floras from America’s southernmost latitudes based on the analysis of terrestrially derived spores and pollen grains from the mid-late Eocene (~46–34 Myr) of southern Patagonia. Robust nonparametric estimators indicate that floras in southern Patagonia were in average ~40% more diverse during the MECO than pre-MECO and post-MECO intervals. The high atmospheric CO2 and increasing temperatures may have favored the combination of neotropical migrants with Gondwanan species, explaining in part the high diversity that we observed during the MECO. Our reconstructed biota reflects a greenhouse world and offers a climatic and ecological deep time scenario of an ice-free sub-Antarctic realm. Fil: Fernández, Damián Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego. Instituto de Ciencias Polares, Recursos Naturales y Ambiente; Argentina Fil: Palazzesi, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: González Estebenet, María Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina Fil: Tellería, María Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Sistemática y Biología Evolutiva; ... Article in Journal/Newspaper Antarc* Antarctic Tierra del Fuego CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Austral Patagonia Argentino Argentina Communications Biology 4 1 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Eocene Greenhouse Patagonia Floras https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
Eocene Greenhouse Patagonia Floras https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Fernández, Damián Andrés Palazzesi, Luis González Estebenet, María Sol Tellería, María Cristina Barreda, Viviana Dora Impact of mid Eocene greenhouse warming on America’s southernmost floras |
topic_facet |
Eocene Greenhouse Patagonia Floras https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
A major climate shift took place about 40 Myr ago—the Middle Eocene Climatic Optimum or MECO—triggered by a significant rise of atmospheric CO2 concentrations. The biotic response to this MECO is well documented in the marine realm, but poorly explored in adjacent landmasses. Here, we quantify the response of the floras from America’s southernmost latitudes based on the analysis of terrestrially derived spores and pollen grains from the mid-late Eocene (~46–34 Myr) of southern Patagonia. Robust nonparametric estimators indicate that floras in southern Patagonia were in average ~40% more diverse during the MECO than pre-MECO and post-MECO intervals. The high atmospheric CO2 and increasing temperatures may have favored the combination of neotropical migrants with Gondwanan species, explaining in part the high diversity that we observed during the MECO. Our reconstructed biota reflects a greenhouse world and offers a climatic and ecological deep time scenario of an ice-free sub-Antarctic realm. Fil: Fernández, Damián Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego. Instituto de Ciencias Polares, Recursos Naturales y Ambiente; Argentina Fil: Palazzesi, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: González Estebenet, María Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina Fil: Tellería, María Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Sistemática y Biología Evolutiva; ... |
format |
Article in Journal/Newspaper |
author |
Fernández, Damián Andrés Palazzesi, Luis González Estebenet, María Sol Tellería, María Cristina Barreda, Viviana Dora |
author_facet |
Fernández, Damián Andrés Palazzesi, Luis González Estebenet, María Sol Tellería, María Cristina Barreda, Viviana Dora |
author_sort |
Fernández, Damián Andrés |
title |
Impact of mid Eocene greenhouse warming on America’s southernmost floras |
title_short |
Impact of mid Eocene greenhouse warming on America’s southernmost floras |
title_full |
Impact of mid Eocene greenhouse warming on America’s southernmost floras |
title_fullStr |
Impact of mid Eocene greenhouse warming on America’s southernmost floras |
title_full_unstemmed |
Impact of mid Eocene greenhouse warming on America’s southernmost floras |
title_sort |
impact of mid eocene greenhouse warming on america’s southernmost floras |
publisher |
Nature |
url |
http://hdl.handle.net/11336/137904 |
geographic |
Antarctic Austral Patagonia Argentino Argentina |
geographic_facet |
Antarctic Austral Patagonia Argentino Argentina |
genre |
Antarc* Antarctic Tierra del Fuego |
genre_facet |
Antarc* Antarctic Tierra del Fuego |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s42003-021-01701-5 info:eu-repo/semantics/altIdentifier/doi/10.1038/s42003-021-01701-5 http://hdl.handle.net/11336/137904 Fernández, Damián Andrés; Palazzesi, Luis; González Estebenet, María Sol; Tellería, María Cristina; Barreda, Viviana Dora; Impact of mid Eocene greenhouse warming on America’s southernmost floras; Nature; Communications Biology; 4; 176; 9-12-2021; 1-9 2399-3642 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
op_doi |
https://doi.org/10.1038/s42003-021-01701-5 |
container_title |
Communications Biology |
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4 |
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1 |
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1779316647520108544 |