Quantitative analysis of Cenozoic palynofloras from Patagonia (southern South America).
The statistical analysis of published Paleocene-Late Miocene palynological data from Patagonia supports several major stages of vegetation. These stages represent distinctive floral assemblages, both in composition and structure. Detrended correspondence analysis shows that during the Paleocene, sou...
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ftconicet:oai:ri.conicet.gov.ar:11336/6489 2023-10-09T21:46:13+02:00 Quantitative analysis of Cenozoic palynofloras from Patagonia (southern South America). Quattrocchio, Mirta Elena Martinez, Marcelo Adrian Hinojosa, Luis Felipe Jaramillo, Carlos application/pdf http://hdl.handle.net/11336/6489 eng eng Taylor & Francis info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/01916122.2013.787126 info:eu-repo/semantics/altIdentifier/doi/10.1080/01916122.2013.787126 info:eu-repo/semantics/altIdentifier/url/http://palynology.geoscienceworld.org/content/37/2/246.full http://hdl.handle.net/11336/6489 Quattrocchio, Mirta Elena; Martinez, Marcelo Adrian; Hinojosa, Luis Felipe; Jaramillo, Carlos; Quantitative analysis of Cenozoic palynofloras from Patagonia (southern South America).; Taylor & Francis; Palynology; 37; 2; 1-2013; 246-258 0191-6122 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Cenozoic Southern South America Patagonia Palynofloras Statistics 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/10.1080/01916122.2013.787126 2023-09-24T20:19:18Z The statistical analysis of published Paleocene-Late Miocene palynological data from Patagonia supports several major stages of vegetation. These stages represent distinctive floral assemblages, both in composition and structure. Detrended correspondence analysis shows that during the Paleocene, southern South America was dominated by Australasian, Neotropical and Pantropical phytogeographical elements (Gondwanic paleoflora). The climate was warm and very humid. The Early Eocene was dominated by Neotropical and Pantropical taxa (Subtropical Gondwanic Paleoflora) and a reduced proportion of Australasian and a low proportion of Antarctic elements. The Middle Eocene and Oligocene were characterized by the -Mixed Paleoflora-with the exception of the Sloggett Formation. The climate was less humid due to the onset of the Antarctic glaciation. The presence of Antarctic palynomorphs (Nothofagaceae, Podocarpaceae, Proteaceae) in Patagonia is consistent with the global cooling trend during the Late Eocene and Early Oligocene. By the Late Oligocene-Early Miocene, warm climates allowed the southward dispersal of Neotropical elements (palms, Cupania, Alchornea, Rubiaceae, Combretaceae), adding megathermal elements to the local Gondwanic floras. The appearance of some Neotropical families (Symplocaceae, Euphorbiaceae Alchornea) may indicate the Late Oligocene global warming event. The rise of xerophytic and halophytic shrubby-herbaceous elements (Convolvulaceae, Asteraceae, Poaceae, Chenopodiaceae and Ephedraceae) during the Late Oligocene, becoming more abundant during the Early Miocene began to give a modern appearance to plant communities. The Early-Middle Miocene corresponds to the Transitional Paleophytogeoprovince of central and southeastern Argentina, defined by a mix of Neotropical and Austral components. The Middle-Late Miocene was characterized by the final demise of megathermal elements in Patagonia, coupled with an increasing diversity and abundance of xerophytic adapted taxa, including Asteraceae, Chenopodiaceae ... Article in Journal/Newspaper Antarc* Antarctic CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic The Antarctic Austral Patagonia Argentina Palynology 37 2 246 258 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Cenozoic Southern South America Patagonia Palynofloras Statistics https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
Cenozoic Southern South America Patagonia Palynofloras Statistics https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Quattrocchio, Mirta Elena Martinez, Marcelo Adrian Hinojosa, Luis Felipe Jaramillo, Carlos Quantitative analysis of Cenozoic palynofloras from Patagonia (southern South America). |
topic_facet |
Cenozoic Southern South America Patagonia Palynofloras Statistics https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
The statistical analysis of published Paleocene-Late Miocene palynological data from Patagonia supports several major stages of vegetation. These stages represent distinctive floral assemblages, both in composition and structure. Detrended correspondence analysis shows that during the Paleocene, southern South America was dominated by Australasian, Neotropical and Pantropical phytogeographical elements (Gondwanic paleoflora). The climate was warm and very humid. The Early Eocene was dominated by Neotropical and Pantropical taxa (Subtropical Gondwanic Paleoflora) and a reduced proportion of Australasian and a low proportion of Antarctic elements. The Middle Eocene and Oligocene were characterized by the -Mixed Paleoflora-with the exception of the Sloggett Formation. The climate was less humid due to the onset of the Antarctic glaciation. The presence of Antarctic palynomorphs (Nothofagaceae, Podocarpaceae, Proteaceae) in Patagonia is consistent with the global cooling trend during the Late Eocene and Early Oligocene. By the Late Oligocene-Early Miocene, warm climates allowed the southward dispersal of Neotropical elements (palms, Cupania, Alchornea, Rubiaceae, Combretaceae), adding megathermal elements to the local Gondwanic floras. The appearance of some Neotropical families (Symplocaceae, Euphorbiaceae Alchornea) may indicate the Late Oligocene global warming event. The rise of xerophytic and halophytic shrubby-herbaceous elements (Convolvulaceae, Asteraceae, Poaceae, Chenopodiaceae and Ephedraceae) during the Late Oligocene, becoming more abundant during the Early Miocene began to give a modern appearance to plant communities. The Early-Middle Miocene corresponds to the Transitional Paleophytogeoprovince of central and southeastern Argentina, defined by a mix of Neotropical and Austral components. The Middle-Late Miocene was characterized by the final demise of megathermal elements in Patagonia, coupled with an increasing diversity and abundance of xerophytic adapted taxa, including Asteraceae, Chenopodiaceae ... |
format |
Article in Journal/Newspaper |
author |
Quattrocchio, Mirta Elena Martinez, Marcelo Adrian Hinojosa, Luis Felipe Jaramillo, Carlos |
author_facet |
Quattrocchio, Mirta Elena Martinez, Marcelo Adrian Hinojosa, Luis Felipe Jaramillo, Carlos |
author_sort |
Quattrocchio, Mirta Elena |
title |
Quantitative analysis of Cenozoic palynofloras from Patagonia (southern South America). |
title_short |
Quantitative analysis of Cenozoic palynofloras from Patagonia (southern South America). |
title_full |
Quantitative analysis of Cenozoic palynofloras from Patagonia (southern South America). |
title_fullStr |
Quantitative analysis of Cenozoic palynofloras from Patagonia (southern South America). |
title_full_unstemmed |
Quantitative analysis of Cenozoic palynofloras from Patagonia (southern South America). |
title_sort |
quantitative analysis of cenozoic palynofloras from patagonia (southern south america). |
publisher |
Taylor & Francis |
url |
http://hdl.handle.net/11336/6489 |
geographic |
Antarctic The Antarctic Austral Patagonia Argentina |
geographic_facet |
Antarctic The Antarctic Austral Patagonia Argentina |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/01916122.2013.787126 info:eu-repo/semantics/altIdentifier/doi/10.1080/01916122.2013.787126 info:eu-repo/semantics/altIdentifier/url/http://palynology.geoscienceworld.org/content/37/2/246.full http://hdl.handle.net/11336/6489 Quattrocchio, Mirta Elena; Martinez, Marcelo Adrian; Hinojosa, Luis Felipe; Jaramillo, Carlos; Quantitative analysis of Cenozoic palynofloras from Patagonia (southern South America).; Taylor & Francis; Palynology; 37; 2; 1-2013; 246-258 0191-6122 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1080/01916122.2013.787126 |
container_title |
Palynology |
container_volume |
37 |
container_issue |
2 |
container_start_page |
246 |
op_container_end_page |
258 |
_version_ |
1779321872816537600 |