Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams?
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400002 |
Resumo: | Several studies in tropical watersheds have evaluated the impact of urbanization and agricultural practices on water quality. In Brazil, savannas (known regionally as Cerrados) represent 23% of the country's surface, representing an important share to the national primary growth product, especially due to intense agriculture. The purpose of this study is to present a comprehensive evaluation, on a yearly basis, of carbon, nitrogen and major ion fluxes in streams crossing areas under different land use (natural vegetation, sugar cane and eucalyptus) in a savanna region of SE Brazil. Eucalyptus and sugar cane alter the transport of the investigated elements in small watersheds. The highest concentration of all parameters (abiotic parameters, ions, dissolved organic carbon DOC - and dissolved inorganic carbon - DIC) were found in Sugar Cane Watersheds (SCW). The observed concentrations of major cations in Eucalyptus Watersheds (EW) (Mg, Ca, K, Na), as well as DIN and DOC, were found frequently to be intermediate values between those of Savanna Watersheds (SW) and SCW, suggesting a moderate impact of eucalyptus plantations on the streamwater. Same trends were found in relation to ion and nutrient fluxes, where the higher values corresponded to SCW. It is suggested that sugar cane plantations might be playing an important role in altering the chemistry of water bodies. |
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Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams?savannanutrientswatershedsugar caneeucalyptusSeveral studies in tropical watersheds have evaluated the impact of urbanization and agricultural practices on water quality. In Brazil, savannas (known regionally as Cerrados) represent 23% of the country's surface, representing an important share to the national primary growth product, especially due to intense agriculture. The purpose of this study is to present a comprehensive evaluation, on a yearly basis, of carbon, nitrogen and major ion fluxes in streams crossing areas under different land use (natural vegetation, sugar cane and eucalyptus) in a savanna region of SE Brazil. Eucalyptus and sugar cane alter the transport of the investigated elements in small watersheds. The highest concentration of all parameters (abiotic parameters, ions, dissolved organic carbon DOC - and dissolved inorganic carbon - DIC) were found in Sugar Cane Watersheds (SCW). The observed concentrations of major cations in Eucalyptus Watersheds (EW) (Mg, Ca, K, Na), as well as DIN and DOC, were found frequently to be intermediate values between those of Savanna Watersheds (SW) and SCW, suggesting a moderate impact of eucalyptus plantations on the streamwater. Same trends were found in relation to ion and nutrient fluxes, where the higher values corresponded to SCW. It is suggested that sugar cane plantations might be playing an important role in altering the chemistry of water bodies.Escola Superior de Agricultura "Luiz de Queiroz"2007-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400002Scientia Agricola v.64 n.4 2007reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162007000400002info:eu-repo/semantics/openAccessSilva,Daniela Mariano Lopes daOmetto,Jean Pierre Henry BalbaudLobo,Gré de AraújoLima,Walter de PaulaScaranello,Marcos AugustoMazzi,EdmarRocha,Humberto Ribeiro daeng2007-10-11T00:00:00Zoai:scielo:S0103-90162007000400002Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2007-10-11T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams? |
title |
Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams? |
spellingShingle |
Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams? Silva,Daniela Mariano Lopes da savanna nutrients watershed sugar cane eucalyptus |
title_short |
Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams? |
title_full |
Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams? |
title_fullStr |
Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams? |
title_full_unstemmed |
Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams? |
title_sort |
Can land use changes alter carbon, nitrogen and major ion transport in subtropical brazilian streams? |
author |
Silva,Daniela Mariano Lopes da |
author_facet |
Silva,Daniela Mariano Lopes da Ometto,Jean Pierre Henry Balbaud Lobo,Gré de Araújo Lima,Walter de Paula Scaranello,Marcos Augusto Mazzi,Edmar Rocha,Humberto Ribeiro da |
author_role |
author |
author2 |
Ometto,Jean Pierre Henry Balbaud Lobo,Gré de Araújo Lima,Walter de Paula Scaranello,Marcos Augusto Mazzi,Edmar Rocha,Humberto Ribeiro da |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Silva,Daniela Mariano Lopes da Ometto,Jean Pierre Henry Balbaud Lobo,Gré de Araújo Lima,Walter de Paula Scaranello,Marcos Augusto Mazzi,Edmar Rocha,Humberto Ribeiro da |
dc.subject.por.fl_str_mv |
savanna nutrients watershed sugar cane eucalyptus |
topic |
savanna nutrients watershed sugar cane eucalyptus |
description |
Several studies in tropical watersheds have evaluated the impact of urbanization and agricultural practices on water quality. In Brazil, savannas (known regionally as Cerrados) represent 23% of the country's surface, representing an important share to the national primary growth product, especially due to intense agriculture. The purpose of this study is to present a comprehensive evaluation, on a yearly basis, of carbon, nitrogen and major ion fluxes in streams crossing areas under different land use (natural vegetation, sugar cane and eucalyptus) in a savanna region of SE Brazil. Eucalyptus and sugar cane alter the transport of the investigated elements in small watersheds. The highest concentration of all parameters (abiotic parameters, ions, dissolved organic carbon DOC - and dissolved inorganic carbon - DIC) were found in Sugar Cane Watersheds (SCW). The observed concentrations of major cations in Eucalyptus Watersheds (EW) (Mg, Ca, K, Na), as well as DIN and DOC, were found frequently to be intermediate values between those of Savanna Watersheds (SW) and SCW, suggesting a moderate impact of eucalyptus plantations on the streamwater. Same trends were found in relation to ion and nutrient fluxes, where the higher values corresponded to SCW. It is suggested that sugar cane plantations might be playing an important role in altering the chemistry of water bodies. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400002 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-90162007000400002 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola v.64 n.4 2007 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1748936460560498688 |