Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montado
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/10188 |
Resumo: | Nitrogen (N) content in the soil and in the herbaceous biomass were monitored during spring of 2004-2006 to determine how the herbaceous layer development influences soil N availability in the montado ecosystem of southern Portugal. Highest (246.6 ± 52.7 g m-2) and lowest (123.2 ± 89.5 g m-2) peak biomass occurred in 2006 and 2005 respectively. Total soilNwithin the top 20 cmsoil profile ranged between 0.2 0.1% in February and 0.41 0.2% inMay,while available soil N was lowest (5 ± 2 μg g-1soil) in February but increased three-to-five fold in March and was >17.5 μg g-1 soil at senescence in May. Significant (p < 0.001) increase in total N in the aboveground pool occurred between February and May. There was however, no decay in soil N content. Instead, the herbaceous vegetation enhanced soil N input and N retention in the ecosystem. Most of the herbaceous plants were annuals with large reserves of organic N at senescence, which returned to the soil as detritus. The herbaceous vegetation is a critical component of the montado that contributes to N recharge and cycling within the ecosystem. |
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Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montadoBiomass development of the herbaceous vegetationMediterranean ecosystemsPortuguese montadoPasturePlant and soil nitrogen poolsRoot distribution and nutrient uptakeSoil moistureNitrogen (N) content in the soil and in the herbaceous biomass were monitored during spring of 2004-2006 to determine how the herbaceous layer development influences soil N availability in the montado ecosystem of southern Portugal. Highest (246.6 ± 52.7 g m-2) and lowest (123.2 ± 89.5 g m-2) peak biomass occurred in 2006 and 2005 respectively. Total soilNwithin the top 20 cmsoil profile ranged between 0.2 0.1% in February and 0.41 0.2% inMay,while available soil N was lowest (5 ± 2 μg g-1soil) in February but increased three-to-five fold in March and was >17.5 μg g-1 soil at senescence in May. Significant (p < 0.001) increase in total N in the aboveground pool occurred between February and May. There was however, no decay in soil N content. Instead, the herbaceous vegetation enhanced soil N input and N retention in the ecosystem. Most of the herbaceous plants were annuals with large reserves of organic N at senescence, which returned to the soil as detritus. The herbaceous vegetation is a critical component of the montado that contributes to N recharge and cycling within the ecosystem.Elsevier2014-01-28T15:20:45Z2014-01-282010-11-26T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/10188http://hdl.handle.net/10174/10188porD.O. Otieno, H. Mirzaei, M.Z. Hussain, Y.L. Li, M.W.T. Schmidt, M. Wartinger , E. Jung, N. Ribeiro, J.S. Pereira, J. Tenhunen, (2011). Herbaceous layer development during spring does not deplete soil nitrogen. Journal of Arid Environments 75: 231-238http://www.sciencedirect.com/science/article/pii/S0140196310002922Departamento de Fitotecniandndndndndndndnmcar@uevora.ptjspereira@isa.utl.ptnd578Otieno, D.O.Mirzaei, H.Hussain, M.Z.Li, Y.L.Schmidt, M.W.T.Wartinger, M.Jung, E.Ribeiro, N.Pereira, J.S.Tenhunen, J.info: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:RCAAP2024-01-03T18:52:51Zoai:dspace.uevora.pt:10174/10188Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:04:08.037306Repositório 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 |
Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montado |
title |
Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montado |
spellingShingle |
Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montado Otieno, D.O. Biomass development of the herbaceous vegetation Mediterranean ecosystems Portuguese montado Pasture Plant and soil nitrogen pools Root distribution and nutrient uptake Soil moisture |
title_short |
Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montado |
title_full |
Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montado |
title_fullStr |
Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montado |
title_full_unstemmed |
Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montado |
title_sort |
Herbaceous layer development during spring does not deplete soil nitrogen in the Portuguese montado |
author |
Otieno, D.O. |
author_facet |
Otieno, D.O. Mirzaei, H. Hussain, M.Z. Li, Y.L. Schmidt, M.W.T. Wartinger, M. Jung, E. Ribeiro, N. Pereira, J.S. Tenhunen, J. |
author_role |
author |
author2 |
Mirzaei, H. Hussain, M.Z. Li, Y.L. Schmidt, M.W.T. Wartinger, M. Jung, E. Ribeiro, N. Pereira, J.S. Tenhunen, J. |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Otieno, D.O. Mirzaei, H. Hussain, M.Z. Li, Y.L. Schmidt, M.W.T. Wartinger, M. Jung, E. Ribeiro, N. Pereira, J.S. Tenhunen, J. |
dc.subject.por.fl_str_mv |
Biomass development of the herbaceous vegetation Mediterranean ecosystems Portuguese montado Pasture Plant and soil nitrogen pools Root distribution and nutrient uptake Soil moisture |
topic |
Biomass development of the herbaceous vegetation Mediterranean ecosystems Portuguese montado Pasture Plant and soil nitrogen pools Root distribution and nutrient uptake Soil moisture |
description |
Nitrogen (N) content in the soil and in the herbaceous biomass were monitored during spring of 2004-2006 to determine how the herbaceous layer development influences soil N availability in the montado ecosystem of southern Portugal. Highest (246.6 ± 52.7 g m-2) and lowest (123.2 ± 89.5 g m-2) peak biomass occurred in 2006 and 2005 respectively. Total soilNwithin the top 20 cmsoil profile ranged between 0.2 0.1% in February and 0.41 0.2% inMay,while available soil N was lowest (5 ± 2 μg g-1soil) in February but increased three-to-five fold in March and was >17.5 μg g-1 soil at senescence in May. Significant (p < 0.001) increase in total N in the aboveground pool occurred between February and May. There was however, no decay in soil N content. Instead, the herbaceous vegetation enhanced soil N input and N retention in the ecosystem. Most of the herbaceous plants were annuals with large reserves of organic N at senescence, which returned to the soil as detritus. The herbaceous vegetation is a critical component of the montado that contributes to N recharge and cycling within the ecosystem. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-11-26T00:00:00Z 2014-01-28T15:20:45Z 2014-01-28 |
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/10174/10188 http://hdl.handle.net/10174/10188 |
url |
http://hdl.handle.net/10174/10188 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
D.O. Otieno, H. Mirzaei, M.Z. Hussain, Y.L. Li, M.W.T. Schmidt, M. Wartinger , E. Jung, N. Ribeiro, J.S. Pereira, J. Tenhunen, (2011). Herbaceous layer development during spring does not deplete soil nitrogen. Journal of Arid Environments 75: 231-238 http://www.sciencedirect.com/science/article/pii/S0140196310002922 Departamento de Fitotecnia nd nd nd nd nd nd nd nmcar@uevora.pt jspereira@isa.utl.pt nd 578 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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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1799136525615628288 |