Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system ?

Detalhes bibliográficos
Autor(a) principal: Rodrigues, Ana Raquel
Data de Publicação: 2015
Outros Autores: Silva, Emanuelle, Santos, Gustavo, Coutinho, João, Madeira, Manuel
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/11856
Resumo: Vast montado areas are threatened by degradation, as the result of a long history of land use changes. Since improved pastures have been installed aiming soil quality improvement and system sustainability, it is crucial to evaluate the effects of these management changes on soil organic matter status and soil biological activity, as soil quality indicators. Therefore, a 35-yr old improved pasture and a natural pasture were studied, considering areas beneath tree canopy and in the open. Total organic C, total N, hot water soluble (HWS) and particulate (POM) C, microbial biomass C (MBC) and N (MBN), C mineralization rate (CMR) and net N mineralization rate (NMR) were determined. In addition, for a 1-yr period, soil β-glucosidase, urease, proteases and acid phosphomonoesterase were periodically determined. Improved pasture promoted the increase of soil C and N through POM-C increment, particularly beneath the trees canopies. The two study pastures did not show differences regarding soil microbial biomass, but variations in CMR, HWS-C and N availability (proteases and urease activities) suggest divergent soil microbial communities. Tree regulator role on C, N and P transformation processes in soil was confirmed
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spelling Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system ?As pastagens melhoradas alteram a actividade enzimática e a dinâmica do C e do N nos solos do sistema montado ?C and N mineralization ratesevergreen oak woodland managementorganic matter fractionssoil enzymessoil microbial biomassVast montado areas are threatened by degradation, as the result of a long history of land use changes. Since improved pastures have been installed aiming soil quality improvement and system sustainability, it is crucial to evaluate the effects of these management changes on soil organic matter status and soil biological activity, as soil quality indicators. Therefore, a 35-yr old improved pasture and a natural pasture were studied, considering areas beneath tree canopy and in the open. Total organic C, total N, hot water soluble (HWS) and particulate (POM) C, microbial biomass C (MBC) and N (MBN), C mineralization rate (CMR) and net N mineralization rate (NMR) were determined. In addition, for a 1-yr period, soil β-glucosidase, urease, proteases and acid phosphomonoesterase were periodically determined. Improved pasture promoted the increase of soil C and N through POM-C increment, particularly beneath the trees canopies. The two study pastures did not show differences regarding soil microbial biomass, but variations in CMR, HWS-C and N availability (proteases and urease activities) suggest divergent soil microbial communities. Tree regulator role on C, N and P transformation processes in soil was confirmedSCAPRepositório da Universidade de LisboaRodrigues, Ana RaquelSilva, EmanuelleSantos, GustavoCoutinho, JoãoMadeira, Manuel2016-07-21T13:57:04Z20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/11856eng"Revista de Ciências Agrárias". ISSN 0871-018X. 38 (4) (2015) p. 535-546http://dx.doi.org/10.19084/RCA15138info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:42:05Zoai:www.repository.utl.pt:10400.5/11856Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:58:05.115541Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system ?
As pastagens melhoradas alteram a actividade enzimática e a dinâmica do C e do N nos solos do sistema montado ?
title Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system ?
spellingShingle Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system ?
Rodrigues, Ana Raquel
C and N mineralization rates
evergreen oak woodland management
organic matter fractions
soil enzymes
soil microbial biomass
title_short Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system ?
title_full Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system ?
title_fullStr Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system ?
title_full_unstemmed Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system ?
title_sort Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system ?
author Rodrigues, Ana Raquel
author_facet Rodrigues, Ana Raquel
Silva, Emanuelle
Santos, Gustavo
Coutinho, João
Madeira, Manuel
author_role author
author2 Silva, Emanuelle
Santos, Gustavo
Coutinho, João
Madeira, Manuel
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Rodrigues, Ana Raquel
Silva, Emanuelle
Santos, Gustavo
Coutinho, João
Madeira, Manuel
dc.subject.por.fl_str_mv C and N mineralization rates
evergreen oak woodland management
organic matter fractions
soil enzymes
soil microbial biomass
topic C and N mineralization rates
evergreen oak woodland management
organic matter fractions
soil enzymes
soil microbial biomass
description Vast montado areas are threatened by degradation, as the result of a long history of land use changes. Since improved pastures have been installed aiming soil quality improvement and system sustainability, it is crucial to evaluate the effects of these management changes on soil organic matter status and soil biological activity, as soil quality indicators. Therefore, a 35-yr old improved pasture and a natural pasture were studied, considering areas beneath tree canopy and in the open. Total organic C, total N, hot water soluble (HWS) and particulate (POM) C, microbial biomass C (MBC) and N (MBN), C mineralization rate (CMR) and net N mineralization rate (NMR) were determined. In addition, for a 1-yr period, soil β-glucosidase, urease, proteases and acid phosphomonoesterase were periodically determined. Improved pasture promoted the increase of soil C and N through POM-C increment, particularly beneath the trees canopies. The two study pastures did not show differences regarding soil microbial biomass, but variations in CMR, HWS-C and N availability (proteases and urease activities) suggest divergent soil microbial communities. Tree regulator role on C, N and P transformation processes in soil was confirmed
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01T00:00:00Z
2016-07-21T13:57:04Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/11856
url http://hdl.handle.net/10400.5/11856
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Revista de Ciências Agrárias". ISSN 0871-018X. 38 (4) (2015) p. 535-546
http://dx.doi.org/10.19084/RCA15138
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv SCAP
publisher.none.fl_str_mv SCAP
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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