Holocene paleoagrostological impressions from the eastern Chaco region (Argentina)
- Autores
- Contreras, Silvina Andrea; Lutz, Alicia Isabel; Zucol, Alejandro Fabián
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Although no data are available on the paleoflora of the Chaco plain, plant fossil impressions are found in the banks of the low Bermejo River, which flows along the Eastern Chaco phytogeographic region. Here, we analyze paleoagrostological impressions recovered from two fossiliferous localities in order to provide insights into the environmental history of the Chaco region. Sixty complete Poaceae spikelet impressions were studied morphologically and compared with extant Chaco grass species. For each fossil spikelet, 11 morphological characters were described and statistically analyzed. All spikelets were found to belong to the Panicoideae subfamily, and some have consistent morphological features with this subfamily; hence, we assign them to the extant genera Cenchrus, Echinochloa, Hymenachne, and Paspalum. These impressions are the first floral remains found in the Eastern Chaco and collectively suggest that environmental and climatic conditions from these sediments corresponded to a subtropical humid climate and that vegetation was similar to the extant Eastern Chaco flora.
Fil: Contreras, Silvina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
Fil: Lutz, Alicia Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
Fil: Zucol, Alejandro Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Entre Rios. Universidad Nacional de Entre Rios. Centro de Investigaciones y Transferencia de Entre Rios; Argentina - Materia
-
Chaco
Quaternary
Poaceae
Spikelet Impress - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/26781
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Holocene paleoagrostological impressions from the eastern Chaco region (Argentina)Contreras, Silvina AndreaLutz, Alicia IsabelZucol, Alejandro FabiánChacoQuaternaryPoaceaeSpikelet Impresshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Although no data are available on the paleoflora of the Chaco plain, plant fossil impressions are found in the banks of the low Bermejo River, which flows along the Eastern Chaco phytogeographic region. Here, we analyze paleoagrostological impressions recovered from two fossiliferous localities in order to provide insights into the environmental history of the Chaco region. Sixty complete Poaceae spikelet impressions were studied morphologically and compared with extant Chaco grass species. For each fossil spikelet, 11 morphological characters were described and statistically analyzed. All spikelets were found to belong to the Panicoideae subfamily, and some have consistent morphological features with this subfamily; hence, we assign them to the extant genera Cenchrus, Echinochloa, Hymenachne, and Paspalum. These impressions are the first floral remains found in the Eastern Chaco and collectively suggest that environmental and climatic conditions from these sediments corresponded to a subtropical humid climate and that vegetation was similar to the extant Eastern Chaco flora.Fil: Contreras, Silvina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; ArgentinaFil: Lutz, Alicia Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; ArgentinaFil: Zucol, Alejandro Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Entre Rios. Universidad Nacional de Entre Rios. Centro de Investigaciones y Transferencia de Entre Rios; ArgentinaElsevier Science2015-09-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/26781Contreras, Silvina Andrea; Lutz, Alicia Isabel; Zucol, Alejandro Fabián; Holocene paleoagrostological impressions from the eastern Chaco region (Argentina); Elsevier Science; Review of Palaeobotany and Palynology; 223; 18-9-2015; 37-490034-66670034-6667CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.revpalbo.2015.08.008info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S003466671500161Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:57:22Zoai:ri.conicet.gov.ar:11336/26781instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:57:22.618CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Holocene paleoagrostological impressions from the eastern Chaco region (Argentina) |
title |
Holocene paleoagrostological impressions from the eastern Chaco region (Argentina) |
spellingShingle |
Holocene paleoagrostological impressions from the eastern Chaco region (Argentina) Contreras, Silvina Andrea Chaco Quaternary Poaceae Spikelet Impress |
title_short |
Holocene paleoagrostological impressions from the eastern Chaco region (Argentina) |
title_full |
Holocene paleoagrostological impressions from the eastern Chaco region (Argentina) |
title_fullStr |
Holocene paleoagrostological impressions from the eastern Chaco region (Argentina) |
title_full_unstemmed |
Holocene paleoagrostological impressions from the eastern Chaco region (Argentina) |
title_sort |
Holocene paleoagrostological impressions from the eastern Chaco region (Argentina) |
dc.creator.none.fl_str_mv |
Contreras, Silvina Andrea Lutz, Alicia Isabel Zucol, Alejandro Fabián |
author |
Contreras, Silvina Andrea |
author_facet |
Contreras, Silvina Andrea Lutz, Alicia Isabel Zucol, Alejandro Fabián |
author_role |
author |
author2 |
Lutz, Alicia Isabel Zucol, Alejandro Fabián |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Chaco Quaternary Poaceae Spikelet Impress |
topic |
Chaco Quaternary Poaceae Spikelet Impress |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Although no data are available on the paleoflora of the Chaco plain, plant fossil impressions are found in the banks of the low Bermejo River, which flows along the Eastern Chaco phytogeographic region. Here, we analyze paleoagrostological impressions recovered from two fossiliferous localities in order to provide insights into the environmental history of the Chaco region. Sixty complete Poaceae spikelet impressions were studied morphologically and compared with extant Chaco grass species. For each fossil spikelet, 11 morphological characters were described and statistically analyzed. All spikelets were found to belong to the Panicoideae subfamily, and some have consistent morphological features with this subfamily; hence, we assign them to the extant genera Cenchrus, Echinochloa, Hymenachne, and Paspalum. These impressions are the first floral remains found in the Eastern Chaco and collectively suggest that environmental and climatic conditions from these sediments corresponded to a subtropical humid climate and that vegetation was similar to the extant Eastern Chaco flora. Fil: Contreras, Silvina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina Fil: Lutz, Alicia Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina Fil: Zucol, Alejandro Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Entre Rios. Universidad Nacional de Entre Rios. Centro de Investigaciones y Transferencia de Entre Rios; Argentina |
description |
Although no data are available on the paleoflora of the Chaco plain, plant fossil impressions are found in the banks of the low Bermejo River, which flows along the Eastern Chaco phytogeographic region. Here, we analyze paleoagrostological impressions recovered from two fossiliferous localities in order to provide insights into the environmental history of the Chaco region. Sixty complete Poaceae spikelet impressions were studied morphologically and compared with extant Chaco grass species. For each fossil spikelet, 11 morphological characters were described and statistically analyzed. All spikelets were found to belong to the Panicoideae subfamily, and some have consistent morphological features with this subfamily; hence, we assign them to the extant genera Cenchrus, Echinochloa, Hymenachne, and Paspalum. These impressions are the first floral remains found in the Eastern Chaco and collectively suggest that environmental and climatic conditions from these sediments corresponded to a subtropical humid climate and that vegetation was similar to the extant Eastern Chaco flora. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09-18 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/26781 Contreras, Silvina Andrea; Lutz, Alicia Isabel; Zucol, Alejandro Fabián; Holocene paleoagrostological impressions from the eastern Chaco region (Argentina); Elsevier Science; Review of Palaeobotany and Palynology; 223; 18-9-2015; 37-49 0034-6667 0034-6667 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/26781 |
identifier_str_mv |
Contreras, Silvina Andrea; Lutz, Alicia Isabel; Zucol, Alejandro Fabián; Holocene paleoagrostological impressions from the eastern Chaco region (Argentina); Elsevier Science; Review of Palaeobotany and Palynology; 223; 18-9-2015; 37-49 0034-6667 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.revpalbo.2015.08.008 info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S003466671500161X |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613716768718848 |
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13.070432 |