The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River

Autores
Latrubesse, Edgardo Manuel; Amsler, Mario Luis; de Morais, R.P.; Aquino, S.
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Abstract: The geomorphic response of the Araguaia River to catastrophic deforestation of the Cerrado since 1970s is discussed. With a mean annual discharge of 6,500m3/s and a drainage area of ~380,000km2, the Araguaia River is the main system draining the savannas of Central Brazil. Here, we demonstrate that the river is undergoing a substantive increase in bed load transport and changes in its geomorphology. A multi-approach methodology was used and involved detailed geomorphologic mapping for three decades (60,70,90), a budget of erosional and deposition areas using GIS, volumetric calculations, and estimations of bed load transport. Our results show that the alluvial plain is undergoing active sedimentation and 233 Mt of sediments were stored by channel activity in a reach 570km long of the middle Araguaia.. The bedload transport has increased 31% from 6.6 Mt in the sixties to 8.8 Mt in the 1990s and the channel pattern has been metamorphosed to some extent. This is an outstanding current example of short term geomorphic response to deforestation in a large pristine tropical fluvial system without direct human interventions in the channel.
Fil: Latrubesse, Edgardo Manuel. Univ. Of Texas (austin) - Dept. Of Geogr And The Envir.; Estados Unidos
Fil: Amsler, Mario Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: de Morais, R.P.. Dept. Of Geography And The Environment; Estados Unidos
Fil: Aquino, S.. Univ. Of Texas (austin) - Dept. Of Geogr And The Envir.; Estados Unidos
Materia
ARAGUAIA RIVER
DEFORESTATION
TROPICAL
SOUTH AMERICA
LARGE RIVERS
GEOMORPHOLOGIC RESPONSE
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:11336/102246
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/102246
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia RiverLatrubesse, Edgardo ManuelAmsler, Mario Luisde Morais, R.P.Aquino, S.ARAGUAIA RIVERDEFORESTATIONTROPICALSOUTH AMERICALARGE RIVERSGEOMORPHOLOGIC RESPONSEhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Abstract: The geomorphic response of the Araguaia River to catastrophic deforestation of the Cerrado since 1970s is discussed. With a mean annual discharge of 6,500m3/s and a drainage area of ~380,000km2, the Araguaia River is the main system draining the savannas of Central Brazil. Here, we demonstrate that the river is undergoing a substantive increase in bed load transport and changes in its geomorphology. A multi-approach methodology was used and involved detailed geomorphologic mapping for three decades (60,70,90), a budget of erosional and deposition areas using GIS, volumetric calculations, and estimations of bed load transport. Our results show that the alluvial plain is undergoing active sedimentation and 233 Mt of sediments were stored by channel activity in a reach 570km long of the middle Araguaia.. The bedload transport has increased 31% from 6.6 Mt in the sixties to 8.8 Mt in the 1990s and the channel pattern has been metamorphosed to some extent. This is an outstanding current example of short term geomorphic response to deforestation in a large pristine tropical fluvial system without direct human interventions in the channel.Fil: Latrubesse, Edgardo Manuel. Univ. Of Texas (austin) - Dept. Of Geogr And The Envir.; Estados UnidosFil: Amsler, Mario Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: de Morais, R.P.. Dept. Of Geography And The Environment; Estados UnidosFil: Aquino, S.. Univ. Of Texas (austin) - Dept. Of Geogr And The Envir.; Estados UnidosElsevier Science2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/102246Latrubesse, Edgardo Manuel; Amsler, Mario Luis; de Morais, R.P.; Aquino, S.; The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River; Elsevier Science; Geomorphology; 113; 3-4; 12-2009; 239-2520169-555XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2009.03.014info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:28Zoai:ri.conicet.gov.ar:11336/102246instacron: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 10:04:28.497CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River
title The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River
spellingShingle The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River
Latrubesse, Edgardo Manuel
ARAGUAIA RIVER
DEFORESTATION
TROPICAL
SOUTH AMERICA
LARGE RIVERS
GEOMORPHOLOGIC RESPONSE
title_short The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River
title_full The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River
title_fullStr The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River
title_full_unstemmed The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River
title_sort The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River
dc.creator.none.fl_str_mv Latrubesse, Edgardo Manuel
Amsler, Mario Luis
de Morais, R.P.
Aquino, S.
author Latrubesse, Edgardo Manuel
author_facet Latrubesse, Edgardo Manuel
Amsler, Mario Luis
de Morais, R.P.
Aquino, S.
author_role author
author2 Amsler, Mario Luis
de Morais, R.P.
Aquino, S.
author2_role author
author
author
dc.subject.none.fl_str_mv ARAGUAIA RIVER
DEFORESTATION
TROPICAL
SOUTH AMERICA
LARGE RIVERS
GEOMORPHOLOGIC RESPONSE
topic ARAGUAIA RIVER
DEFORESTATION
TROPICAL
SOUTH AMERICA
LARGE RIVERS
GEOMORPHOLOGIC RESPONSE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Abstract: The geomorphic response of the Araguaia River to catastrophic deforestation of the Cerrado since 1970s is discussed. With a mean annual discharge of 6,500m3/s and a drainage area of ~380,000km2, the Araguaia River is the main system draining the savannas of Central Brazil. Here, we demonstrate that the river is undergoing a substantive increase in bed load transport and changes in its geomorphology. A multi-approach methodology was used and involved detailed geomorphologic mapping for three decades (60,70,90), a budget of erosional and deposition areas using GIS, volumetric calculations, and estimations of bed load transport. Our results show that the alluvial plain is undergoing active sedimentation and 233 Mt of sediments were stored by channel activity in a reach 570km long of the middle Araguaia.. The bedload transport has increased 31% from 6.6 Mt in the sixties to 8.8 Mt in the 1990s and the channel pattern has been metamorphosed to some extent. This is an outstanding current example of short term geomorphic response to deforestation in a large pristine tropical fluvial system without direct human interventions in the channel.
Fil: Latrubesse, Edgardo Manuel. Univ. Of Texas (austin) - Dept. Of Geogr And The Envir.; Estados Unidos
Fil: Amsler, Mario Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: de Morais, R.P.. Dept. Of Geography And The Environment; Estados Unidos
Fil: Aquino, S.. Univ. Of Texas (austin) - Dept. Of Geogr And The Envir.; Estados Unidos
description Abstract: The geomorphic response of the Araguaia River to catastrophic deforestation of the Cerrado since 1970s is discussed. With a mean annual discharge of 6,500m3/s and a drainage area of ~380,000km2, the Araguaia River is the main system draining the savannas of Central Brazil. Here, we demonstrate that the river is undergoing a substantive increase in bed load transport and changes in its geomorphology. A multi-approach methodology was used and involved detailed geomorphologic mapping for three decades (60,70,90), a budget of erosional and deposition areas using GIS, volumetric calculations, and estimations of bed load transport. Our results show that the alluvial plain is undergoing active sedimentation and 233 Mt of sediments were stored by channel activity in a reach 570km long of the middle Araguaia.. The bedload transport has increased 31% from 6.6 Mt in the sixties to 8.8 Mt in the 1990s and the channel pattern has been metamorphosed to some extent. This is an outstanding current example of short term geomorphic response to deforestation in a large pristine tropical fluvial system without direct human interventions in the channel.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
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/11336/102246
Latrubesse, Edgardo Manuel; Amsler, Mario Luis; de Morais, R.P.; Aquino, S.; The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River; Elsevier Science; Geomorphology; 113; 3-4; 12-2009; 239-252
0169-555X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/102246
identifier_str_mv Latrubesse, Edgardo Manuel; Amsler, Mario Luis; de Morais, R.P.; Aquino, S.; The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River; Elsevier Science; Geomorphology; 113; 3-4; 12-2009; 239-252
0169-555X
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.geomorph.2009.03.014
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 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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score 13.13397

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