Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen

Autores
Harris, Wylie N.; Moretto, Alicia Susana; Distel, Roberto Alejandro; Boutton, Thomas W.; Bóo, Roberto M.
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fire and grazing can modulate feedbacks between pools of carbon and nitrogen of plant and soil, altering cycles of these elements in grassland ecosystems. The magnitude of these effects may be limited by climate and by limited plasticity in tissue chemistry within a given photosynthetic pathway. We tested the hypotheses that (1) fire reduces rates of C and N cycling, while grazing increases them, and (2) these changes are due to intraspecific changes in plant tissue chemistry rather than competitive replacements by species with differing tissue chemistry. Plant and soil C and N content and isotopic ratios, soil microbial biomass C, and potential C mineralization were measured in areas of the southern Caldenal region of central Argentina with known histories of fire and grazing. Results support the hypothesis that fire reduces rates of N cycling via intraspecific increases in plant tissue C/N. Contrary to our first hypothesis, grazing also reduced plant tissue N. Fire and grazing effects on plant tissue chemistry resulted primarily from changes in dynamics of soil inorganic N. These changes were due to intraspecific changes in plant tissue chemistry, which was in agreement with our second hypothesis. Potential C mineralization experiments revealed little difference between treatments in pool sizes and mean residence times of labile soil organic carbon. Livestock grazing and fire have significant influences on soil N dynamics, particularly as mediated by soil microbes, in managed grasslands of the southern Caldenal in Argentina
Fil: Harris, Wylie N.. Texas A&M University; Estados Unidos
Fil: Moretto, Alicia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Distel, Roberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiarida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; Argentina
Fil: Boutton, Thomas W.. Texas A&M University; Estados Unidos
Fil: Bóo, Roberto M.. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
Materia
Fire
Grazing
Carbon
Nitrogen
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:11336/20641
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogenHarris, Wylie N.Moretto, Alicia SusanaDistel, Roberto AlejandroBoutton, Thomas W.Bóo, Roberto M.FireGrazingCarbonNitrogenhttps://purl.org/becyt/ford/4.5https://purl.org/becyt/ford/4https://purl.org/becyt/ford/4.5https://purl.org/becyt/ford/4Fire and grazing can modulate feedbacks between pools of carbon and nitrogen of plant and soil, altering cycles of these elements in grassland ecosystems. The magnitude of these effects may be limited by climate and by limited plasticity in tissue chemistry within a given photosynthetic pathway. We tested the hypotheses that (1) fire reduces rates of C and N cycling, while grazing increases them, and (2) these changes are due to intraspecific changes in plant tissue chemistry rather than competitive replacements by species with differing tissue chemistry. Plant and soil C and N content and isotopic ratios, soil microbial biomass C, and potential C mineralization were measured in areas of the southern Caldenal region of central Argentina with known histories of fire and grazing. Results support the hypothesis that fire reduces rates of N cycling via intraspecific increases in plant tissue C/N. Contrary to our first hypothesis, grazing also reduced plant tissue N. Fire and grazing effects on plant tissue chemistry resulted primarily from changes in dynamics of soil inorganic N. These changes were due to intraspecific changes in plant tissue chemistry, which was in agreement with our second hypothesis. Potential C mineralization experiments revealed little difference between treatments in pool sizes and mean residence times of labile soil organic carbon. Livestock grazing and fire have significant influences on soil N dynamics, particularly as mediated by soil microbes, in managed grasslands of the southern Caldenal in ArgentinaFil: Harris, Wylie N.. Texas A&M University; Estados UnidosFil: Moretto, Alicia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Distel, Roberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiarida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; ArgentinaFil: Boutton, Thomas W.. Texas A&M University; Estados UnidosFil: Bóo, Roberto M.. Universidad Nacional del Sur. Departamento de Agronomía; ArgentinaElsevier Masson2007-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20641Harris, Wylie N.; Moretto, Alicia Susana; Distel, Roberto Alejandro; Boutton, Thomas W.; Bóo, Roberto M.; Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen; Elsevier Masson; Acta Oecologica; 32; 2; 9-2007; 207-2141146-609XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.actao.2007.05.001info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1146609X07000665info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:37:23Zoai:ri.conicet.gov.ar:11336/20641instacron: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:34982025-09-29 09:37:23.723CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen
title Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen
spellingShingle Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen
Harris, Wylie N.
Fire
Grazing
Carbon
Nitrogen
title_short Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen
title_full Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen
title_fullStr Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen
title_full_unstemmed Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen
title_sort Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen
dc.creator.none.fl_str_mv Harris, Wylie N.
Moretto, Alicia Susana
Distel, Roberto Alejandro
Boutton, Thomas W.
Bóo, Roberto M.
author Harris, Wylie N.
author_facet Harris, Wylie N.
Moretto, Alicia Susana
Distel, Roberto Alejandro
Boutton, Thomas W.
Bóo, Roberto M.
author_role author
author2 Moretto, Alicia Susana
Distel, Roberto Alejandro
Boutton, Thomas W.
Bóo, Roberto M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Fire
Grazing
Carbon
Nitrogen
topic Fire
Grazing
Carbon
Nitrogen
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.5
https://purl.org/becyt/ford/4
https://purl.org/becyt/ford/4.5
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Fire and grazing can modulate feedbacks between pools of carbon and nitrogen of plant and soil, altering cycles of these elements in grassland ecosystems. The magnitude of these effects may be limited by climate and by limited plasticity in tissue chemistry within a given photosynthetic pathway. We tested the hypotheses that (1) fire reduces rates of C and N cycling, while grazing increases them, and (2) these changes are due to intraspecific changes in plant tissue chemistry rather than competitive replacements by species with differing tissue chemistry. Plant and soil C and N content and isotopic ratios, soil microbial biomass C, and potential C mineralization were measured in areas of the southern Caldenal region of central Argentina with known histories of fire and grazing. Results support the hypothesis that fire reduces rates of N cycling via intraspecific increases in plant tissue C/N. Contrary to our first hypothesis, grazing also reduced plant tissue N. Fire and grazing effects on plant tissue chemistry resulted primarily from changes in dynamics of soil inorganic N. These changes were due to intraspecific changes in plant tissue chemistry, which was in agreement with our second hypothesis. Potential C mineralization experiments revealed little difference between treatments in pool sizes and mean residence times of labile soil organic carbon. Livestock grazing and fire have significant influences on soil N dynamics, particularly as mediated by soil microbes, in managed grasslands of the southern Caldenal in Argentina
Fil: Harris, Wylie N.. Texas A&M University; Estados Unidos
Fil: Moretto, Alicia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Distel, Roberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiarida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; Argentina
Fil: Boutton, Thomas W.. Texas A&M University; Estados Unidos
Fil: Bóo, Roberto M.. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
description Fire and grazing can modulate feedbacks between pools of carbon and nitrogen of plant and soil, altering cycles of these elements in grassland ecosystems. The magnitude of these effects may be limited by climate and by limited plasticity in tissue chemistry within a given photosynthetic pathway. We tested the hypotheses that (1) fire reduces rates of C and N cycling, while grazing increases them, and (2) these changes are due to intraspecific changes in plant tissue chemistry rather than competitive replacements by species with differing tissue chemistry. Plant and soil C and N content and isotopic ratios, soil microbial biomass C, and potential C mineralization were measured in areas of the southern Caldenal region of central Argentina with known histories of fire and grazing. Results support the hypothesis that fire reduces rates of N cycling via intraspecific increases in plant tissue C/N. Contrary to our first hypothesis, grazing also reduced plant tissue N. Fire and grazing effects on plant tissue chemistry resulted primarily from changes in dynamics of soil inorganic N. These changes were due to intraspecific changes in plant tissue chemistry, which was in agreement with our second hypothesis. Potential C mineralization experiments revealed little difference between treatments in pool sizes and mean residence times of labile soil organic carbon. Livestock grazing and fire have significant influences on soil N dynamics, particularly as mediated by soil microbes, in managed grasslands of the southern Caldenal in Argentina
publishDate 2007
dc.date.none.fl_str_mv 2007-09
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/11336/20641
Harris, Wylie N.; Moretto, Alicia Susana; Distel, Roberto Alejandro; Boutton, Thomas W.; Bóo, Roberto M.; Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen; Elsevier Masson; Acta Oecologica; 32; 2; 9-2007; 207-214
1146-609X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/20641
identifier_str_mv Harris, Wylie N.; Moretto, Alicia Susana; Distel, Roberto Alejandro; Boutton, Thomas W.; Bóo, Roberto M.; Fire and grazing in the Caldenal of Argentina: Effects on plant and soil carbon and nitrogen; Elsevier Masson; Acta Oecologica; 32; 2; 9-2007; 207-214
1146-609X
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.actao.2007.05.001
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1146609X07000665
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 Masson
publisher.none.fl_str_mv Elsevier Masson
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 13.070432

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