Grazing history effects on above-and below-ground litter decomposition and nutrient cycling in two co-occurring grasses

Autores
Semmartin, María; Garibaldi, Lucas Alejandro; Chaneton, Enrique J.
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Semmartin, María. Universidad de Buenos Aires (UBA). Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA); Argentina.
Fil: Garibaldi, Lucas Alejandro. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio Ecotono; Argentina.
Fil: Chaneton, Enrique J. Universidad de Buenos Aires (UBA). Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA); Argentina.
Fil: Chaneton, Enrique J. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.
Fil: Garibaldi, Lucas Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Semmartin, María. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.
Large herbivores may alter carbon and nutrient cycling in soil by changing above- and below-ground litter decomposition dynamics. Grazing effects may reflect changes in plant allocation patterns, and thus litter quality, or the site conditions for decomposition, but the relative roles of these broad mechanisms have rarely been tested. We examined plant and soil mediated effects of grazing history on litter mass loss and nutrient release in two grazing-tolerant grasses, Lolium multiflorum and Paspalum dilatatum, in a humid pampa grassland, Argentina. Shoot and root litters produced in a common garden by conspecific plants collected from grazed and ungrazed sites were incubated under both grazing conditions. We found that grazing history effects on litter decomposition were stronger for shoot than for root material. Root mass loss was neither affected by litter origin nor incubation site, although roots from the grazed origin immobilised more nutrients. Plants from the grazed site produced shoots with higher cell soluble contents and lower lignin:N ratios. Grazing effects mediated by shoot litter origin depended on the species, and were less apparent than incubation site effects. Lolium shoots from the grazed site decomposed and released nutrients faster, whereas Paspalum shoots from the grazed site retained more nutrient than their respective counterparts from the ungrazed site. Such divergent, species-specific dynamics did not translate into consistent differences in soil mineral N beneath decomposing litters. Indeed, shoot mass loss and nutrient release were generally faster in the grazed grassland, where soil N availability was higher. Our results show that grazing influenced nutrient cycling by modifying litter breakdown within species as well as the soil environment for decomposition. They also indicate that grazing effects on decomposition are likely to involve aerial litter pools rather than the more recalcitrant root compartment.
Materia
Flooding Pampa
Grassland
Herbivory
Nitrogen
Phosphorus
Roots
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
RID-UNRN (UNRN)
Institución
Universidad Nacional de Río Negro
OAI Identificador
oai:rid.unrn.edu.ar:20.500.12049/3285

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network_name_str RID-UNRN (UNRN)
spelling Grazing history effects on above-and below-ground litter decomposition and nutrient cycling in two co-occurring grassesSemmartin, MaríaGaribaldi, Lucas AlejandroChaneton, Enrique J.Flooding PampaGrasslandHerbivoryNitrogenPhosphorusRootsFil: Semmartin, María. Universidad de Buenos Aires (UBA). Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA); Argentina.Fil: Garibaldi, Lucas Alejandro. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio Ecotono; Argentina.Fil: Chaneton, Enrique J. Universidad de Buenos Aires (UBA). Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA); Argentina.Fil: Chaneton, Enrique J. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.Fil: Garibaldi, Lucas Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Semmartin, María. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.Large herbivores may alter carbon and nutrient cycling in soil by changing above- and below-ground litter decomposition dynamics. Grazing effects may reflect changes in plant allocation patterns, and thus litter quality, or the site conditions for decomposition, but the relative roles of these broad mechanisms have rarely been tested. We examined plant and soil mediated effects of grazing history on litter mass loss and nutrient release in two grazing-tolerant grasses, Lolium multiflorum and Paspalum dilatatum, in a humid pampa grassland, Argentina. Shoot and root litters produced in a common garden by conspecific plants collected from grazed and ungrazed sites were incubated under both grazing conditions. We found that grazing history effects on litter decomposition were stronger for shoot than for root material. Root mass loss was neither affected by litter origin nor incubation site, although roots from the grazed origin immobilised more nutrients. Plants from the grazed site produced shoots with higher cell soluble contents and lower lignin:N ratios. Grazing effects mediated by shoot litter origin depended on the species, and were less apparent than incubation site effects. Lolium shoots from the grazed site decomposed and released nutrients faster, whereas Paspalum shoots from the grazed site retained more nutrient than their respective counterparts from the ungrazed site. Such divergent, species-specific dynamics did not translate into consistent differences in soil mineral N beneath decomposing litters. Indeed, shoot mass loss and nutrient release were generally faster in the grazed grassland, where soil N availability was higher. Our results show that grazing influenced nutrient cycling by modifying litter breakdown within species as well as the soil environment for decomposition. They also indicate that grazing effects on decomposition are likely to involve aerial litter pools rather than the more recalcitrant root compartment.Springer2007-12-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfSemmartin, María., Garibaldi, Lucas A. & Chaneton, Enrique J. (2007). Grazing history effects on above- and below-groundlitter decomposition and nutrient cycling in twoco-occurring grasses. Springer; Plant and Soil; 303; 177-1890032-079X1573-5036https://link.springer.com/article/10.1007/s11104-007-9497-9https://rid.unrn.edu.ar/jspui/handle/20.500.12049/328510.1007/s11104-007-9497-9eng303Plant and Soilinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-10-16T10:06:22Zoai:rid.unrn.edu.ar:20.500.12049/3285instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-10-16 10:06:22.479RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv Grazing history effects on above-and below-ground litter decomposition and nutrient cycling in two co-occurring grasses
title Grazing history effects on above-and below-ground litter decomposition and nutrient cycling in two co-occurring grasses
spellingShingle Grazing history effects on above-and below-ground litter decomposition and nutrient cycling in two co-occurring grasses
Semmartin, María
Flooding Pampa
Grassland
Herbivory
Nitrogen
Phosphorus
Roots
title_short Grazing history effects on above-and below-ground litter decomposition and nutrient cycling in two co-occurring grasses
title_full Grazing history effects on above-and below-ground litter decomposition and nutrient cycling in two co-occurring grasses
title_fullStr Grazing history effects on above-and below-ground litter decomposition and nutrient cycling in two co-occurring grasses
title_full_unstemmed Grazing history effects on above-and below-ground litter decomposition and nutrient cycling in two co-occurring grasses
title_sort Grazing history effects on above-and below-ground litter decomposition and nutrient cycling in two co-occurring grasses
dc.creator.none.fl_str_mv Semmartin, María
Garibaldi, Lucas Alejandro
Chaneton, Enrique J.
author Semmartin, María
author_facet Semmartin, María
Garibaldi, Lucas Alejandro
Chaneton, Enrique J.
author_role author
author2 Garibaldi, Lucas Alejandro
Chaneton, Enrique J.
author2_role author
author
dc.subject.none.fl_str_mv Flooding Pampa
Grassland
Herbivory
Nitrogen
Phosphorus
Roots
topic Flooding Pampa
Grassland
Herbivory
Nitrogen
Phosphorus
Roots
dc.description.none.fl_txt_mv Fil: Semmartin, María. Universidad de Buenos Aires (UBA). Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA); Argentina.
Fil: Garibaldi, Lucas Alejandro. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio Ecotono; Argentina.
Fil: Chaneton, Enrique J. Universidad de Buenos Aires (UBA). Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA); Argentina.
Fil: Chaneton, Enrique J. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.
Fil: Garibaldi, Lucas Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Semmartin, María. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.
Large herbivores may alter carbon and nutrient cycling in soil by changing above- and below-ground litter decomposition dynamics. Grazing effects may reflect changes in plant allocation patterns, and thus litter quality, or the site conditions for decomposition, but the relative roles of these broad mechanisms have rarely been tested. We examined plant and soil mediated effects of grazing history on litter mass loss and nutrient release in two grazing-tolerant grasses, Lolium multiflorum and Paspalum dilatatum, in a humid pampa grassland, Argentina. Shoot and root litters produced in a common garden by conspecific plants collected from grazed and ungrazed sites were incubated under both grazing conditions. We found that grazing history effects on litter decomposition were stronger for shoot than for root material. Root mass loss was neither affected by litter origin nor incubation site, although roots from the grazed origin immobilised more nutrients. Plants from the grazed site produced shoots with higher cell soluble contents and lower lignin:N ratios. Grazing effects mediated by shoot litter origin depended on the species, and were less apparent than incubation site effects. Lolium shoots from the grazed site decomposed and released nutrients faster, whereas Paspalum shoots from the grazed site retained more nutrient than their respective counterparts from the ungrazed site. Such divergent, species-specific dynamics did not translate into consistent differences in soil mineral N beneath decomposing litters. Indeed, shoot mass loss and nutrient release were generally faster in the grazed grassland, where soil N availability was higher. Our results show that grazing influenced nutrient cycling by modifying litter breakdown within species as well as the soil environment for decomposition. They also indicate that grazing effects on decomposition are likely to involve aerial litter pools rather than the more recalcitrant root compartment.
description Fil: Semmartin, María. Universidad de Buenos Aires (UBA). Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA); Argentina.
publishDate 2007
dc.date.none.fl_str_mv 2007-12-09
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 Semmartin, María., Garibaldi, Lucas A. & Chaneton, Enrique J. (2007). Grazing history effects on above- and below-groundlitter decomposition and nutrient cycling in twoco-occurring grasses. Springer; Plant and Soil; 303; 177-189
0032-079X
1573-5036
https://link.springer.com/article/10.1007/s11104-007-9497-9
https://rid.unrn.edu.ar/jspui/handle/20.500.12049/3285
10.1007/s11104-007-9497-9
identifier_str_mv Semmartin, María., Garibaldi, Lucas A. & Chaneton, Enrique J. (2007). Grazing history effects on above- and below-groundlitter decomposition and nutrient cycling in twoco-occurring grasses. Springer; Plant and Soil; 303; 177-189
0032-079X
1573-5036
10.1007/s11104-007-9497-9
url https://link.springer.com/article/10.1007/s11104-007-9497-9
https://rid.unrn.edu.ar/jspui/handle/20.500.12049/3285
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 303
Plant and Soil
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:RID-UNRN (UNRN)
instname:Universidad Nacional de Río Negro
reponame_str RID-UNRN (UNRN)
collection RID-UNRN (UNRN)
instname_str Universidad Nacional de Río Negro
repository.name.fl_str_mv RID-UNRN (UNRN) - Universidad Nacional de Río Negro
repository.mail.fl_str_mv rid@unrn.edu.ar
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