Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effects

Autores
Ambrosino, Mariela L.; Busso, Carlos; Torres, Yanina Alejandra; Ithurrart, Leticia S.; Martínez, Juan M.; Minoldo, Gabriela; Cardillo, Daniela S.; Palomo, Iris R.
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Plant litter decomposition is critical for terrestrial ecosystem productivity. Poa ligularis Nees ex Steud and Nassella tenuis (Phil.) Barkworth are native, desirable perennial grasses in central Argentina’s rangelands. Amelichloa ambigua (Speg.)Arriaga&Barkworth is only consumed when a better forage is unavailable. Litter traps were used to collect aboveground litter during two years. In March 2012, six bags, each one containing either leaf blade (three bags, one per species) or root litter (three bags, one per species) of the three species were located belowthe canopy of each replicate plant of the studied species (hereafter referred to as ‘location’). Blade litter bags were located on the soil surface, and root litter bags buried at 10 cm soil depth. This allowed evaluation of the effects of defoliation, the different species canopies and the microbial community activity around their roots on decomposition of above- and belowground litter. For each species, twenty plants were either defoliated twice (5 cm stubble height) or remained undefoliated during the growing season. Litter bagswere collected after 2, 7, 13 and 24months incubation. The studywas repeated in 2013, with additional bagswere placed forNcontent determination on leaf blade and root litters. Aboveground litter productionwas highest in P. ligularis; however, no differences were observed among species when the effect of plant size was eliminated. Aboveground litter of desirable species had higher N content and decomposed faster than that of A. ambigua. The opposite was recorded for root litter. Defoliation had no effect on litter decomposition, but location effects were detected after one year of incubation. Desirable perennial grasses promoted organicmatter loss fromlitter, a key factor in increasing soil fertility in this semiarid ecosystem.
Materia
Ciencias de las Plantas, Botánica
Desirable and undesirable grasses
Leaf litter
Nitrogen
Perennial grasses
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
CIC Digital (CICBA)
Institución
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
OAI Identificador
oai:digital.cic.gba.gob.ar:11746/10573

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network_name_str CIC Digital (CICBA)
spelling Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effectsAmbrosino, Mariela L.Busso, CarlosTorres, Yanina AlejandraIthurrart, Leticia S.Martínez, Juan M.Minoldo, GabrielaCardillo, Daniela S.Palomo, Iris R.Ciencias de las Plantas, BotánicaDesirable and undesirable grassesLeaf litterNitrogenPerennial grassesPlant litter decomposition is critical for terrestrial ecosystem productivity. Poa ligularis Nees ex Steud and Nassella tenuis (Phil.) Barkworth are native, desirable perennial grasses in central Argentina’s rangelands. Amelichloa ambigua (Speg.)Arriaga&Barkworth is only consumed when a better forage is unavailable. Litter traps were used to collect aboveground litter during two years. In March 2012, six bags, each one containing either leaf blade (three bags, one per species) or root litter (three bags, one per species) of the three species were located belowthe canopy of each replicate plant of the studied species (hereafter referred to as ‘location’). Blade litter bags were located on the soil surface, and root litter bags buried at 10 cm soil depth. This allowed evaluation of the effects of defoliation, the different species canopies and the microbial community activity around their roots on decomposition of above- and belowground litter. For each species, twenty plants were either defoliated twice (5 cm stubble height) or remained undefoliated during the growing season. Litter bagswere collected after 2, 7, 13 and 24months incubation. The studywas repeated in 2013, with additional bagswere placed forNcontent determination on leaf blade and root litters. Aboveground litter productionwas highest in P. ligularis; however, no differences were observed among species when the effect of plant size was eliminated. Aboveground litter of desirable species had higher N content and decomposed faster than that of A. ambigua. The opposite was recorded for root litter. Defoliation had no effect on litter decomposition, but location effects were detected after one year of incubation. Desirable perennial grasses promoted organicmatter loss fromlitter, a key factor in increasing soil fertility in this semiarid ecosystem.2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/10573enginfo:eu-repo/semantics/altIdentifier/doi/10.1071/RJ18070info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-29T13:40:00Zoai:digital.cic.gba.gob.ar:11746/10573Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-29 13:40:00.762CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse
dc.title.none.fl_str_mv Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effects
title Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effects
spellingShingle Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effects
Ambrosino, Mariela L.
Ciencias de las Plantas, Botánica
Desirable and undesirable grasses
Leaf litter
Nitrogen
Perennial grasses
title_short Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effects
title_full Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effects
title_fullStr Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effects
title_full_unstemmed Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effects
title_sort Plant litter decomposition in a semiarid rangeland of Argentina: species and defoliation effects
dc.creator.none.fl_str_mv Ambrosino, Mariela L.
Busso, Carlos
Torres, Yanina Alejandra
Ithurrart, Leticia S.
Martínez, Juan M.
Minoldo, Gabriela
Cardillo, Daniela S.
Palomo, Iris R.
author Ambrosino, Mariela L.
author_facet Ambrosino, Mariela L.
Busso, Carlos
Torres, Yanina Alejandra
Ithurrart, Leticia S.
Martínez, Juan M.
Minoldo, Gabriela
Cardillo, Daniela S.
Palomo, Iris R.
author_role author
author2 Busso, Carlos
Torres, Yanina Alejandra
Ithurrart, Leticia S.
Martínez, Juan M.
Minoldo, Gabriela
Cardillo, Daniela S.
Palomo, Iris R.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias de las Plantas, Botánica
Desirable and undesirable grasses
Leaf litter
Nitrogen
Perennial grasses
topic Ciencias de las Plantas, Botánica
Desirable and undesirable grasses
Leaf litter
Nitrogen
Perennial grasses
dc.description.none.fl_txt_mv Plant litter decomposition is critical for terrestrial ecosystem productivity. Poa ligularis Nees ex Steud and Nassella tenuis (Phil.) Barkworth are native, desirable perennial grasses in central Argentina’s rangelands. Amelichloa ambigua (Speg.)Arriaga&Barkworth is only consumed when a better forage is unavailable. Litter traps were used to collect aboveground litter during two years. In March 2012, six bags, each one containing either leaf blade (three bags, one per species) or root litter (three bags, one per species) of the three species were located belowthe canopy of each replicate plant of the studied species (hereafter referred to as ‘location’). Blade litter bags were located on the soil surface, and root litter bags buried at 10 cm soil depth. This allowed evaluation of the effects of defoliation, the different species canopies and the microbial community activity around their roots on decomposition of above- and belowground litter. For each species, twenty plants were either defoliated twice (5 cm stubble height) or remained undefoliated during the growing season. Litter bagswere collected after 2, 7, 13 and 24months incubation. The studywas repeated in 2013, with additional bagswere placed forNcontent determination on leaf blade and root litters. Aboveground litter productionwas highest in P. ligularis; however, no differences were observed among species when the effect of plant size was eliminated. Aboveground litter of desirable species had higher N content and decomposed faster than that of A. ambigua. The opposite was recorded for root litter. Defoliation had no effect on litter decomposition, but location effects were detected after one year of incubation. Desirable perennial grasses promoted organicmatter loss fromlitter, a key factor in increasing soil fertility in this semiarid ecosystem.
description Plant litter decomposition is critical for terrestrial ecosystem productivity. Poa ligularis Nees ex Steud and Nassella tenuis (Phil.) Barkworth are native, desirable perennial grasses in central Argentina’s rangelands. Amelichloa ambigua (Speg.)Arriaga&Barkworth is only consumed when a better forage is unavailable. Litter traps were used to collect aboveground litter during two years. In March 2012, six bags, each one containing either leaf blade (three bags, one per species) or root litter (three bags, one per species) of the three species were located belowthe canopy of each replicate plant of the studied species (hereafter referred to as ‘location’). Blade litter bags were located on the soil surface, and root litter bags buried at 10 cm soil depth. This allowed evaluation of the effects of defoliation, the different species canopies and the microbial community activity around their roots on decomposition of above- and belowground litter. For each species, twenty plants were either defoliated twice (5 cm stubble height) or remained undefoliated during the growing season. Litter bagswere collected after 2, 7, 13 and 24months incubation. The studywas repeated in 2013, with additional bagswere placed forNcontent determination on leaf blade and root litters. Aboveground litter productionwas highest in P. ligularis; however, no differences were observed among species when the effect of plant size was eliminated. Aboveground litter of desirable species had higher N content and decomposed faster than that of A. ambigua. The opposite was recorded for root litter. Defoliation had no effect on litter decomposition, but location effects were detected after one year of incubation. Desirable perennial grasses promoted organicmatter loss fromlitter, a key factor in increasing soil fertility in this semiarid ecosystem.
publishDate 2019
dc.date.none.fl_str_mv 2019
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 https://digital.cic.gba.gob.ar/handle/11746/10573
url https://digital.cic.gba.gob.ar/handle/11746/10573
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1071/RJ18070
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
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instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
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collection CIC Digital (CICBA)
instname_str Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron_str CICBA
institution CICBA
repository.name.fl_str_mv CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
repository.mail.fl_str_mv marisa.degiusti@sedici.unlp.edu.ar
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