Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Relatório |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100019 |
Resumo: | Many temperate agricultural soils have prolonged periods in the winter when plant carbon inputs to the soil are low. Soil maintained at low temperature in the absence of plants was used to simulate the conditions in a vineyard soil during winter. In a four month simulated overwintering period we showed that the concentration of dissolved organic carbon and nitrogen in soil solution slowly declined alongside heterotrophic soil respiration. Measurements of free amino acid concentrations and turnover indicated that the amino acid pool in soil was rapidly depleted but readily replenished throughout the four-month period. This indicates that the soil contained intrinsic reserves of labile C that was capable of supporting the soil microbial community in times of reduced plant C inputs. |
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Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winterDOCDONmicrobial activitymineralizationnitratestorageMany temperate agricultural soils have prolonged periods in the winter when plant carbon inputs to the soil are low. Soil maintained at low temperature in the absence of plants was used to simulate the conditions in a vineyard soil during winter. In a four month simulated overwintering period we showed that the concentration of dissolved organic carbon and nitrogen in soil solution slowly declined alongside heterotrophic soil respiration. Measurements of free amino acid concentrations and turnover indicated that the amino acid pool in soil was rapidly depleted but readily replenished throughout the four-month period. This indicates that the soil contained intrinsic reserves of labile C that was capable of supporting the soil microbial community in times of reduced plant C inputs.Escola Superior de Agricultura "Luiz de Queiroz"2009-02-01info:eu-repo/semantics/reportinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100019Scientia Agricola v.66 n.1 2009reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162009000100019info:eu-repo/semantics/openAccessAvramides,Elizabeth J.Christou,MatinaJones,David L.eng2009-02-13T00:00:00Zoai:scielo:S0103-90162009000100019Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2009-02-13T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter |
title |
Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter |
spellingShingle |
Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter Avramides,Elizabeth J. DOC DON microbial activity mineralization nitrate storage |
title_short |
Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter |
title_full |
Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter |
title_fullStr |
Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter |
title_full_unstemmed |
Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter |
title_sort |
Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter |
author |
Avramides,Elizabeth J. |
author_facet |
Avramides,Elizabeth J. Christou,Matina Jones,David L. |
author_role |
author |
author2 |
Christou,Matina Jones,David L. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Avramides,Elizabeth J. Christou,Matina Jones,David L. |
dc.subject.por.fl_str_mv |
DOC DON microbial activity mineralization nitrate storage |
topic |
DOC DON microbial activity mineralization nitrate storage |
description |
Many temperate agricultural soils have prolonged periods in the winter when plant carbon inputs to the soil are low. Soil maintained at low temperature in the absence of plants was used to simulate the conditions in a vineyard soil during winter. In a four month simulated overwintering period we showed that the concentration of dissolved organic carbon and nitrogen in soil solution slowly declined alongside heterotrophic soil respiration. Measurements of free amino acid concentrations and turnover indicated that the amino acid pool in soil was rapidly depleted but readily replenished throughout the four-month period. This indicates that the soil contained intrinsic reserves of labile C that was capable of supporting the soil microbial community in times of reduced plant C inputs. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-02-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/report |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
report |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100019 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100019 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-90162009000100019 |
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.66 n.1 2009 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_ |
1748936461411942400 |