Desert systems, climate change, and trace fossils

Autores
Krapovickas, Verónica; Mangano, Maria Gabriela; Buatois, Luis Alberto; Marsicano, Claudia Alicia
Año de publicación
2016
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Desert settings consist of complex mosaics of habitats or physical units associated with organism activity. Trace-fossil distribution can be understood as reflecting the partitioning of desert settings in a mosaic of landscape units, characterized by water content and its temporal fluctuations, nutrient availability, nature of the substrate, and the dominant organisms present. In turn, desert systems are dynamic entities that change as a response to regional climate. Landscape units, such as eolian sand seas, salt flat and playa lake systems, ephemeral rivers and alluvial fans, interact in response to regional-scale climate variations in hyper-arid, arid, and semiarid climatic settings. Ancient deserts completely developed under hyper-arid climatic conditions rarely preserve ichnofossils due to the absence of moisture near the surface. The alternation of wet periods may represent windows for life development and thus, preservation of biogenic structures. Arid deserts display complex patterns of dunes combined with dry, wet, and flooded interdunes. Dry desert elements (e.g. dunes, interdunes, sand sheets) typically record the Entradichnus-Octopodichnus and Chelichnus Ichnofacies. Slight rises in regional precipitation produce elevation of the water table and increase of fluvial discharges that provide water and sediment to the system. These processes may result in the local concentration of ichnofossils in wet interdunes and ephemeral fluvial systems, illustrating the Scoyenia and Chelichnus Ichnofacies. In semiarid systems playa lakes expand by the addition of freshwater, evolving into freshwater lakes, and fluvial systems may become more common; lake margins and fluvial overbanks typically contain trace-fossil assemblages that may be ascribed to the Scoyenia Ichnofacies.
Fil: Krapovickas, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Mangano, Maria Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Saskatchewan; Canadá
Fil: Buatois, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Saskatchewan; Canadá
Fil: Marsicano, Claudia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
4th International Congress on Ichnology
Idanha-a-Nova
Portugal
International Ichnological Association
Geopark Naturtejo da Meseta Meridional
UNESCO Global Geopark
University of Lisbon. National Museum of Natural History and Science
Materia
Desert system
Ichnology
Ichnofacies
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/235904
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Desert systems, climate change, and trace fossilsKrapovickas, VerónicaMangano, Maria GabrielaBuatois, Luis AlbertoMarsicano, Claudia AliciaDesert systemIchnologyIchnofacieshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Desert settings consist of complex mosaics of habitats or physical units associated with organism activity. Trace-fossil distribution can be understood as reflecting the partitioning of desert settings in a mosaic of landscape units, characterized by water content and its temporal fluctuations, nutrient availability, nature of the substrate, and the dominant organisms present. In turn, desert systems are dynamic entities that change as a response to regional climate. Landscape units, such as eolian sand seas, salt flat and playa lake systems, ephemeral rivers and alluvial fans, interact in response to regional-scale climate variations in hyper-arid, arid, and semiarid climatic settings. Ancient deserts completely developed under hyper-arid climatic conditions rarely preserve ichnofossils due to the absence of moisture near the surface. The alternation of wet periods may represent windows for life development and thus, preservation of biogenic structures. Arid deserts display complex patterns of dunes combined with dry, wet, and flooded interdunes. Dry desert elements (e.g. dunes, interdunes, sand sheets) typically record the Entradichnus-Octopodichnus and Chelichnus Ichnofacies. Slight rises in regional precipitation produce elevation of the water table and increase of fluvial discharges that provide water and sediment to the system. These processes may result in the local concentration of ichnofossils in wet interdunes and ephemeral fluvial systems, illustrating the Scoyenia and Chelichnus Ichnofacies. In semiarid systems playa lakes expand by the addition of freshwater, evolving into freshwater lakes, and fluvial systems may become more common; lake margins and fluvial overbanks typically contain trace-fossil assemblages that may be ascribed to the Scoyenia Ichnofacies.Fil: Krapovickas, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Mangano, Maria Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Saskatchewan; CanadáFil: Buatois, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Saskatchewan; CanadáFil: Marsicano, Claudia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina4th International Congress on IchnologyIdanha-a-NovaPortugalInternational Ichnological AssociationGeopark Naturtejo da Meseta MeridionalUNESCO Global GeoparkUniversity of Lisbon. National Museum of Natural History and ScienceInternational Ichnological Association2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/mswordapplication/pdfhttp://hdl.handle.net/11336/235904Desert systems, climate change, and trace fossils; 4th International Congress on Ichnology; Idanha-a-Nova; Portugal; 2016; 40-40978-989-97888-1-7CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.palass.org/meetings-events/future-meetings/4th-international-congress-ichnology-ichnia-2016info:eu-repo/semantics/altIdentifier/url/https://www.naturtejo.com/ficheiros/conteudos/files/ichnia16livro.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:56:42Zoai:ri.conicet.gov.ar:11336/235904instacron: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:34982025-09-03 09:56:42.357CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Desert systems, climate change, and trace fossils
title Desert systems, climate change, and trace fossils
spellingShingle Desert systems, climate change, and trace fossils
Krapovickas, Verónica
Desert system
Ichnology
Ichnofacies
title_short Desert systems, climate change, and trace fossils
title_full Desert systems, climate change, and trace fossils
title_fullStr Desert systems, climate change, and trace fossils
title_full_unstemmed Desert systems, climate change, and trace fossils
title_sort Desert systems, climate change, and trace fossils
dc.creator.none.fl_str_mv Krapovickas, Verónica
Mangano, Maria Gabriela
Buatois, Luis Alberto
Marsicano, Claudia Alicia
author Krapovickas, Verónica
author_facet Krapovickas, Verónica
Mangano, Maria Gabriela
Buatois, Luis Alberto
Marsicano, Claudia Alicia
author_role author
author2 Mangano, Maria Gabriela
Buatois, Luis Alberto
Marsicano, Claudia Alicia
author2_role author
author
author
dc.subject.none.fl_str_mv Desert system
Ichnology
Ichnofacies
topic Desert system
Ichnology
Ichnofacies
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Desert settings consist of complex mosaics of habitats or physical units associated with organism activity. Trace-fossil distribution can be understood as reflecting the partitioning of desert settings in a mosaic of landscape units, characterized by water content and its temporal fluctuations, nutrient availability, nature of the substrate, and the dominant organisms present. In turn, desert systems are dynamic entities that change as a response to regional climate. Landscape units, such as eolian sand seas, salt flat and playa lake systems, ephemeral rivers and alluvial fans, interact in response to regional-scale climate variations in hyper-arid, arid, and semiarid climatic settings. Ancient deserts completely developed under hyper-arid climatic conditions rarely preserve ichnofossils due to the absence of moisture near the surface. The alternation of wet periods may represent windows for life development and thus, preservation of biogenic structures. Arid deserts display complex patterns of dunes combined with dry, wet, and flooded interdunes. Dry desert elements (e.g. dunes, interdunes, sand sheets) typically record the Entradichnus-Octopodichnus and Chelichnus Ichnofacies. Slight rises in regional precipitation produce elevation of the water table and increase of fluvial discharges that provide water and sediment to the system. These processes may result in the local concentration of ichnofossils in wet interdunes and ephemeral fluvial systems, illustrating the Scoyenia and Chelichnus Ichnofacies. In semiarid systems playa lakes expand by the addition of freshwater, evolving into freshwater lakes, and fluvial systems may become more common; lake margins and fluvial overbanks typically contain trace-fossil assemblages that may be ascribed to the Scoyenia Ichnofacies.
Fil: Krapovickas, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Mangano, Maria Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Saskatchewan; Canadá
Fil: Buatois, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Saskatchewan; Canadá
Fil: Marsicano, Claudia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
4th International Congress on Ichnology
Idanha-a-Nova
Portugal
International Ichnological Association
Geopark Naturtejo da Meseta Meridional
UNESCO Global Geopark
University of Lisbon. National Museum of Natural History and Science
description Desert settings consist of complex mosaics of habitats or physical units associated with organism activity. Trace-fossil distribution can be understood as reflecting the partitioning of desert settings in a mosaic of landscape units, characterized by water content and its temporal fluctuations, nutrient availability, nature of the substrate, and the dominant organisms present. In turn, desert systems are dynamic entities that change as a response to regional climate. Landscape units, such as eolian sand seas, salt flat and playa lake systems, ephemeral rivers and alluvial fans, interact in response to regional-scale climate variations in hyper-arid, arid, and semiarid climatic settings. Ancient deserts completely developed under hyper-arid climatic conditions rarely preserve ichnofossils due to the absence of moisture near the surface. The alternation of wet periods may represent windows for life development and thus, preservation of biogenic structures. Arid deserts display complex patterns of dunes combined with dry, wet, and flooded interdunes. Dry desert elements (e.g. dunes, interdunes, sand sheets) typically record the Entradichnus-Octopodichnus and Chelichnus Ichnofacies. Slight rises in regional precipitation produce elevation of the water table and increase of fluvial discharges that provide water and sediment to the system. These processes may result in the local concentration of ichnofossils in wet interdunes and ephemeral fluvial systems, illustrating the Scoyenia and Chelichnus Ichnofacies. In semiarid systems playa lakes expand by the addition of freshwater, evolving into freshwater lakes, and fluvial systems may become more common; lake margins and fluvial overbanks typically contain trace-fossil assemblages that may be ascribed to the Scoyenia Ichnofacies.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/235904
Desert systems, climate change, and trace fossils; 4th International Congress on Ichnology; Idanha-a-Nova; Portugal; 2016; 40-40
978-989-97888-1-7
CONICET Digital
CONICET
url http://hdl.handle.net/11336/235904
identifier_str_mv Desert systems, climate change, and trace fossils; 4th International Congress on Ichnology; Idanha-a-Nova; Portugal; 2016; 40-40
978-989-97888-1-7
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/url/https://www.naturtejo.com/ficheiros/conteudos/files/ichnia16livro.pdf
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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/msword
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dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv International Ichnological Association
publisher.none.fl_str_mv International Ichnological Association
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