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Article . 2017
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Article . 2017
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Helechos arborescentes en la Antártida

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 2017 Argentina Spanish; Castilian Publisher:Asociación Civil Ciencia Hoy
Authors: Vera, Ezequiel Ignacio; Cesari, Silvia Nelida;

handle: 11336/56509

Helechos arborescentes en la Antártida

Abstract

En este artículo se discute la presencia de los representantes del orden Cyatheales en la flora aptiana de la Formación Cerro Negro (Isla Livingston, Antártida), entre los que se incluyen cuatro taxones basados en petrificaciones de tallos, tres especies de frondes, y esporas aisladas. La presencia de esta considerable diversidad (representada además por numerosos especímenes) sugiere que el estrato arborescente no estaba restringido a las coníferas, sino que además era ocupado por los helechos. Además, considerando los requisitos ecológicos actuales de este grupo de helechos arborescentes, se sugieren condiciones climáticas relativamente benignas en la región hace 120 millones de años.

Fil: Vera, Ezequiel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina

Fil: Cesari, Silvia Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina

Country
Argentina
Related Organizations
Keywords

https://purl.org/becyt/ford/1.5, Cretácico, Antártida, Fosil, Helechos, https://purl.org/becyt/ford/1

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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