Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-off

Autores
Garcia Martinez, Guillermo Carlos; Golluscio, Rodolfo Angel
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We explored the effect of N addition and adult canopy competition on the recruitment of lost preferred species in the Patagonian steppe, where a decelerated N cycling scenario (sensu Ritchie et al., 1998) had been previously detected. In the first experiment we demonstrated that the preferred scarce grass Bromus pictus has typical traits of Competitive species, while the dominant less preferred Pappostipa speciosa has typical traits of Stress tolerant species (sensu Grime, 1997): B. pictus showed higher maximum Relative Growth Rate, water consumption and competitive ability than P. speciosa. In the second experiment, we proved that without N addition, seedlings of the preferred species showed its maximum survival rate under moderate grazing, where adult competition is lower than under ungrazed conditions and N-limitation is lower than under intense grazing. Instead, with N addition, the survival rate of B. pictus was maximum under intense grazing, where N limitation is maximum and adult competition is minimum. These results suggest that in degraded systems subjected to a decelerating N cycling scenario, the revegetation with preferred species would require recovering soil N levels, and would be more successful in the most degraded sites, where the remnant canopy has low cover.
EEA Esquel
Fil: García Martínez, Guillermo Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; Argentina
Fil: Golluscio, Rodolfo. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentina
Fil: Golluscio, Rodolfo. Universidad de Buenos Aires. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Fuente
Journal of Arid Environments 189 : 104480 (2021)
Materia
Desertificación
Restauración
Nitrógeno
Plantas para Recuperación del Suelo
Pastoreo
Desertification
Restoration
Nitrogen
Soil Reclamation Plants
Grazing
Región Patagónica
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/8903
Acceder
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oai_identifier_str oai:localhost:20.500.12123/8903
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spelling Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-offGarcia Martinez, Guillermo CarlosGolluscio, Rodolfo AngelDesertificaciónRestauraciónNitrógenoPlantas para Recuperación del SueloPastoreoDesertificationRestorationNitrogenSoil Reclamation PlantsGrazingRegión PatagónicaWe explored the effect of N addition and adult canopy competition on the recruitment of lost preferred species in the Patagonian steppe, where a decelerated N cycling scenario (sensu Ritchie et al., 1998) had been previously detected. In the first experiment we demonstrated that the preferred scarce grass Bromus pictus has typical traits of Competitive species, while the dominant less preferred Pappostipa speciosa has typical traits of Stress tolerant species (sensu Grime, 1997): B. pictus showed higher maximum Relative Growth Rate, water consumption and competitive ability than P. speciosa. In the second experiment, we proved that without N addition, seedlings of the preferred species showed its maximum survival rate under moderate grazing, where adult competition is lower than under ungrazed conditions and N-limitation is lower than under intense grazing. Instead, with N addition, the survival rate of B. pictus was maximum under intense grazing, where N limitation is maximum and adult competition is minimum. These results suggest that in degraded systems subjected to a decelerating N cycling scenario, the revegetation with preferred species would require recovering soil N levels, and would be more successful in the most degraded sites, where the remnant canopy has low cover.EEA EsquelFil: García Martínez, Guillermo Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; ArgentinaFil: Golluscio, Rodolfo. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; ArgentinaFil: Golluscio, Rodolfo. Universidad de Buenos Aires. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaElsevier2021-03-16T14:36:35Z2021-03-16T14:36:35Z2021-03-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/8903https://www.sciencedirect.com/science/article/pii/S014019632100046X0140-1963https://doi.org/10.1016/j.jaridenv.2021.104480Journal of Arid Environments 189 : 104480 (2021)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-10-23T11:17:31Zoai:localhost:20.500.12123/8903instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-23 11:17:32.305INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-off
title Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-off
spellingShingle Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-off
Garcia Martinez, Guillermo Carlos
Desertificación
Restauración
Nitrógeno
Plantas para Recuperación del Suelo
Pastoreo
Desertification
Restoration
Nitrogen
Soil Reclamation Plants
Grazing
Región Patagónica
title_short Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-off
title_full Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-off
title_fullStr Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-off
title_full_unstemmed Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-off
title_sort Grass recruitment constraints along a grazing gradient in Patagonia: N-limitation x adult competition trade-off
dc.creator.none.fl_str_mv Garcia Martinez, Guillermo Carlos
Golluscio, Rodolfo Angel
author Garcia Martinez, Guillermo Carlos
author_facet Garcia Martinez, Guillermo Carlos
Golluscio, Rodolfo Angel
author_role author
author2 Golluscio, Rodolfo Angel
author2_role author
dc.subject.none.fl_str_mv Desertificación
Restauración
Nitrógeno
Plantas para Recuperación del Suelo
Pastoreo
Desertification
Restoration
Nitrogen
Soil Reclamation Plants
Grazing
Región Patagónica
topic Desertificación
Restauración
Nitrógeno
Plantas para Recuperación del Suelo
Pastoreo
Desertification
Restoration
Nitrogen
Soil Reclamation Plants
Grazing
Región Patagónica
dc.description.none.fl_txt_mv We explored the effect of N addition and adult canopy competition on the recruitment of lost preferred species in the Patagonian steppe, where a decelerated N cycling scenario (sensu Ritchie et al., 1998) had been previously detected. In the first experiment we demonstrated that the preferred scarce grass Bromus pictus has typical traits of Competitive species, while the dominant less preferred Pappostipa speciosa has typical traits of Stress tolerant species (sensu Grime, 1997): B. pictus showed higher maximum Relative Growth Rate, water consumption and competitive ability than P. speciosa. In the second experiment, we proved that without N addition, seedlings of the preferred species showed its maximum survival rate under moderate grazing, where adult competition is lower than under ungrazed conditions and N-limitation is lower than under intense grazing. Instead, with N addition, the survival rate of B. pictus was maximum under intense grazing, where N limitation is maximum and adult competition is minimum. These results suggest that in degraded systems subjected to a decelerating N cycling scenario, the revegetation with preferred species would require recovering soil N levels, and would be more successful in the most degraded sites, where the remnant canopy has low cover.
EEA Esquel
Fil: García Martínez, Guillermo Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; Argentina
Fil: Golluscio, Rodolfo. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentina
Fil: Golluscio, Rodolfo. Universidad de Buenos Aires. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
description We explored the effect of N addition and adult canopy competition on the recruitment of lost preferred species in the Patagonian steppe, where a decelerated N cycling scenario (sensu Ritchie et al., 1998) had been previously detected. In the first experiment we demonstrated that the preferred scarce grass Bromus pictus has typical traits of Competitive species, while the dominant less preferred Pappostipa speciosa has typical traits of Stress tolerant species (sensu Grime, 1997): B. pictus showed higher maximum Relative Growth Rate, water consumption and competitive ability than P. speciosa. In the second experiment, we proved that without N addition, seedlings of the preferred species showed its maximum survival rate under moderate grazing, where adult competition is lower than under ungrazed conditions and N-limitation is lower than under intense grazing. Instead, with N addition, the survival rate of B. pictus was maximum under intense grazing, where N limitation is maximum and adult competition is minimum. These results suggest that in degraded systems subjected to a decelerating N cycling scenario, the revegetation with preferred species would require recovering soil N levels, and would be more successful in the most degraded sites, where the remnant canopy has low cover.
publishDate 2021
dc.date.none.fl_str_mv 2021-03-16T14:36:35Z
2021-03-16T14:36:35Z
2021-03-09
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/20.500.12123/8903
https://www.sciencedirect.com/science/article/pii/S014019632100046X
0140-1963
https://doi.org/10.1016/j.jaridenv.2021.104480
url http://hdl.handle.net/20.500.12123/8903
https://www.sciencedirect.com/science/article/pii/S014019632100046X
https://doi.org/10.1016/j.jaridenv.2021.104480
identifier_str_mv 0140-1963
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Journal of Arid Environments 189 : 104480 (2021)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.982451

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