Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century

Autores
Viglizzo, Ernesto Francisco; Frank, Federico Carlos
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Western Pampas consists of a large and complex sand dune system that originated during the last Pleistocene glaciations and was reworked during later semi-desertic episodes. Humans only colonized the region during the last century, but their action was powerful enough to produce two catastrophic events: one during the first half of the century, and the other one during the second half. Deforestation, over grazing, over cropping plus a non-suitable tillage technology in interaction with extremely dry and windy conditions of the 1930s and 1940s, caused a large dust-bowl episode that triggered severe dust storms, cattle mortality, crop failure, farmer bankruptcy and rural migration. During the second half of the century, improved rainfall conditions favored the conversion of abandoned lands into grazing lands and croplands. At the same time, recurrent episodes of flooding affected the area between 1970 and 2002, more drastically in the highly productive lowlands of the Río Quinto Watershed. The configuration of dunes with respect to the slope, and the lack of a suitable infrastructure, impeded water removal and favored its accumulation. High cultivation rates dramatically increased the severity of floods during such humid periods. The ecological catastrophes of the Western Pampas during the 20th century were the result of a complex interaction involving the geological configuration, climate variability and human intervention. Over cropping has probably surpassed critical ecological thresholds and this, in turn, triggered both the dust-bowl and the flooding events. On the other hand, natural feed-back mechanisms were probably activated allowing a later stabilization and recovery of the affected lands.
Fil: Viglizzo, Ernesto Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Frank, Federico Carlos. Instituto Nacional de Tecnología Agropecuaria; Argentina
Materia
Land Use Change
Non-Linear Behavior
Soil Erosion
Floods
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:11336/81805

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network_name_str CONICET Digital (CONICET)
spelling Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last centuryViglizzo, Ernesto FranciscoFrank, Federico CarlosLand Use ChangeNon-Linear BehaviorSoil ErosionFloodshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The Western Pampas consists of a large and complex sand dune system that originated during the last Pleistocene glaciations and was reworked during later semi-desertic episodes. Humans only colonized the region during the last century, but their action was powerful enough to produce two catastrophic events: one during the first half of the century, and the other one during the second half. Deforestation, over grazing, over cropping plus a non-suitable tillage technology in interaction with extremely dry and windy conditions of the 1930s and 1940s, caused a large dust-bowl episode that triggered severe dust storms, cattle mortality, crop failure, farmer bankruptcy and rural migration. During the second half of the century, improved rainfall conditions favored the conversion of abandoned lands into grazing lands and croplands. At the same time, recurrent episodes of flooding affected the area between 1970 and 2002, more drastically in the highly productive lowlands of the Río Quinto Watershed. The configuration of dunes with respect to the slope, and the lack of a suitable infrastructure, impeded water removal and favored its accumulation. High cultivation rates dramatically increased the severity of floods during such humid periods. The ecological catastrophes of the Western Pampas during the 20th century were the result of a complex interaction involving the geological configuration, climate variability and human intervention. Over cropping has probably surpassed critical ecological thresholds and this, in turn, triggered both the dust-bowl and the flooding events. On the other hand, natural feed-back mechanisms were probably activated allowing a later stabilization and recovery of the affected lands.Fil: Viglizzo, Ernesto Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Frank, Federico Carlos. Instituto Nacional de Tecnología Agropecuaria; ArgentinaPergamon-Elsevier Science Ltd2006-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/81805Viglizzo, Ernesto Francisco; Frank, Federico Carlos; Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century; Pergamon-Elsevier Science Ltd; Quaternary International; 158; 1; 12-2006; 122-1261040-6182CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1040618206001595info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2006.05.022info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:28:56Zoai:ri.conicet.gov.ar:11336/81805instacron: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 10:28:56.969CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century
title Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century
spellingShingle Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century
Viglizzo, Ernesto Francisco
Land Use Change
Non-Linear Behavior
Soil Erosion
Floods
title_short Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century
title_full Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century
title_fullStr Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century
title_full_unstemmed Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century
title_sort Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century
dc.creator.none.fl_str_mv Viglizzo, Ernesto Francisco
Frank, Federico Carlos
author Viglizzo, Ernesto Francisco
author_facet Viglizzo, Ernesto Francisco
Frank, Federico Carlos
author_role author
author2 Frank, Federico Carlos
author2_role author
dc.subject.none.fl_str_mv Land Use Change
Non-Linear Behavior
Soil Erosion
Floods
topic Land Use Change
Non-Linear Behavior
Soil Erosion
Floods
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Western Pampas consists of a large and complex sand dune system that originated during the last Pleistocene glaciations and was reworked during later semi-desertic episodes. Humans only colonized the region during the last century, but their action was powerful enough to produce two catastrophic events: one during the first half of the century, and the other one during the second half. Deforestation, over grazing, over cropping plus a non-suitable tillage technology in interaction with extremely dry and windy conditions of the 1930s and 1940s, caused a large dust-bowl episode that triggered severe dust storms, cattle mortality, crop failure, farmer bankruptcy and rural migration. During the second half of the century, improved rainfall conditions favored the conversion of abandoned lands into grazing lands and croplands. At the same time, recurrent episodes of flooding affected the area between 1970 and 2002, more drastically in the highly productive lowlands of the Río Quinto Watershed. The configuration of dunes with respect to the slope, and the lack of a suitable infrastructure, impeded water removal and favored its accumulation. High cultivation rates dramatically increased the severity of floods during such humid periods. The ecological catastrophes of the Western Pampas during the 20th century were the result of a complex interaction involving the geological configuration, climate variability and human intervention. Over cropping has probably surpassed critical ecological thresholds and this, in turn, triggered both the dust-bowl and the flooding events. On the other hand, natural feed-back mechanisms were probably activated allowing a later stabilization and recovery of the affected lands.
Fil: Viglizzo, Ernesto Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Frank, Federico Carlos. Instituto Nacional de Tecnología Agropecuaria; Argentina
description The Western Pampas consists of a large and complex sand dune system that originated during the last Pleistocene glaciations and was reworked during later semi-desertic episodes. Humans only colonized the region during the last century, but their action was powerful enough to produce two catastrophic events: one during the first half of the century, and the other one during the second half. Deforestation, over grazing, over cropping plus a non-suitable tillage technology in interaction with extremely dry and windy conditions of the 1930s and 1940s, caused a large dust-bowl episode that triggered severe dust storms, cattle mortality, crop failure, farmer bankruptcy and rural migration. During the second half of the century, improved rainfall conditions favored the conversion of abandoned lands into grazing lands and croplands. At the same time, recurrent episodes of flooding affected the area between 1970 and 2002, more drastically in the highly productive lowlands of the Río Quinto Watershed. The configuration of dunes with respect to the slope, and the lack of a suitable infrastructure, impeded water removal and favored its accumulation. High cultivation rates dramatically increased the severity of floods during such humid periods. The ecological catastrophes of the Western Pampas during the 20th century were the result of a complex interaction involving the geological configuration, climate variability and human intervention. Over cropping has probably surpassed critical ecological thresholds and this, in turn, triggered both the dust-bowl and the flooding events. On the other hand, natural feed-back mechanisms were probably activated allowing a later stabilization and recovery of the affected lands.
publishDate 2006
dc.date.none.fl_str_mv 2006-12
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/11336/81805
Viglizzo, Ernesto Francisco; Frank, Federico Carlos; Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century; Pergamon-Elsevier Science Ltd; Quaternary International; 158; 1; 12-2006; 122-126
1040-6182
CONICET Digital
CONICET
url http://hdl.handle.net/11336/81805
identifier_str_mv Viglizzo, Ernesto Francisco; Frank, Federico Carlos; Ecological interactions, feedbacks, thresholds and collapses in the Argentine Pampas in response to climate and farming during the last century; Pergamon-Elsevier Science Ltd; Quaternary International; 158; 1; 12-2006; 122-126
1040-6182
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1040618206001595
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2006.05.022
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
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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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