Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches

Autores
Rodriguez, Maria Victoria; Bertiller, Monica Beatriz
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We described seasonal changes in fine-root biomass of a grass and a shrub dominant species in a plant community characteristic of the arid Patagonian Monte and then we inferred to want extent the observed differences could contribute to the species coexistence. We selected representative plant patches of the natural vegetation arrangement consisting of one isolated plant of the dominant shrub Larrea divaricata (Ld), grass patches formed by one or more bunches of the dominant grass Nassella tenuis (Nt), and mixed patches consisting of one individual of L. divaricata with bunches of N. tenuis under its canopy (LdNt). We assessed the biomass and temporal changes in fine roots of each species in the upper soil (50 cm depth) of each patch type at three-month intervals during 2 years. The temporal series of fine-root biomass were compared among patch types and in relation to above-ground phenology, as well as climate variables (precipitation, arid index and air temperature). Seasonal changes in fine-root biomass showed similar cycles in the three plant patches with a maximum in spring. The maximum increase in root biomass in Ld and Nt patches occurred during the onset of reproductive growth in winter and spring, respectively. Fine-root changes in LdNt patches mimicked that in Ld patches. Precipitation inputs were significantly positively and temperature negatively related to fine-root changes in Nt patches. Fine-root changes in Ld and LdNt patches were related to the aridity index (positively) and temperature (negatively). We concluded that the observed asynchronies in the date of the largest increases in root biomass and its climate control between the studied grass and shrub species could contribute to the coexistence of plants of both life forms when they overlap their root systems growing in mixed patches. Mechanisms underlying the root patterns observed should be further explored.
Fil: Rodriguez, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Bertiller, Monica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Materia
Coexistence
Evergreen Shrub
Mixed Patch
Perennial Grass
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:11336/3526

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network_name_str CONICET Digital (CONICET)
spelling Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patchesRodriguez, Maria VictoriaBertiller, Monica BeatrizCoexistenceEvergreen ShrubMixed PatchPerennial Grasshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1We described seasonal changes in fine-root biomass of a grass and a shrub dominant species in a plant community characteristic of the arid Patagonian Monte and then we inferred to want extent the observed differences could contribute to the species coexistence. We selected representative plant patches of the natural vegetation arrangement consisting of one isolated plant of the dominant shrub Larrea divaricata (Ld), grass patches formed by one or more bunches of the dominant grass Nassella tenuis (Nt), and mixed patches consisting of one individual of L. divaricata with bunches of N. tenuis under its canopy (LdNt). We assessed the biomass and temporal changes in fine roots of each species in the upper soil (50 cm depth) of each patch type at three-month intervals during 2 years. The temporal series of fine-root biomass were compared among patch types and in relation to above-ground phenology, as well as climate variables (precipitation, arid index and air temperature). Seasonal changes in fine-root biomass showed similar cycles in the three plant patches with a maximum in spring. The maximum increase in root biomass in Ld and Nt patches occurred during the onset of reproductive growth in winter and spring, respectively. Fine-root changes in LdNt patches mimicked that in Ld patches. Precipitation inputs were significantly positively and temperature negatively related to fine-root changes in Nt patches. Fine-root changes in Ld and LdNt patches were related to the aridity index (positively) and temperature (negatively). We concluded that the observed asynchronies in the date of the largest increases in root biomass and its climate control between the studied grass and shrub species could contribute to the coexistence of plants of both life forms when they overlap their root systems growing in mixed patches. Mechanisms underlying the root patterns observed should be further explored.Fil: Rodriguez, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Bertiller, Monica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaWiley2014-01-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/3526Rodriguez, Maria Victoria; Bertiller, Monica Beatriz; Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches; Wiley; Austral Ecology; 39; 5; 15-1-2014; 501-5101442-9985enginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/aec.12110/abstractinfo:eu-repo/semantics/altIdentifier/doi/DOI:10.1111/aec.12110info:eu-repo/semantics/altIdentifier/issn/1442-9985info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:52:44Zoai:ri.conicet.gov.ar:11336/3526instacron: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:34982025-10-15 14:52:44.709CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches
title Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches
spellingShingle Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches
Rodriguez, Maria Victoria
Coexistence
Evergreen Shrub
Mixed Patch
Perennial Grass
title_short Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches
title_full Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches
title_fullStr Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches
title_full_unstemmed Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches
title_sort Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches
dc.creator.none.fl_str_mv Rodriguez, Maria Victoria
Bertiller, Monica Beatriz
author Rodriguez, Maria Victoria
author_facet Rodriguez, Maria Victoria
Bertiller, Monica Beatriz
author_role author
author2 Bertiller, Monica Beatriz
author2_role author
dc.subject.none.fl_str_mv Coexistence
Evergreen Shrub
Mixed Patch
Perennial Grass
topic Coexistence
Evergreen Shrub
Mixed Patch
Perennial Grass
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We described seasonal changes in fine-root biomass of a grass and a shrub dominant species in a plant community characteristic of the arid Patagonian Monte and then we inferred to want extent the observed differences could contribute to the species coexistence. We selected representative plant patches of the natural vegetation arrangement consisting of one isolated plant of the dominant shrub Larrea divaricata (Ld), grass patches formed by one or more bunches of the dominant grass Nassella tenuis (Nt), and mixed patches consisting of one individual of L. divaricata with bunches of N. tenuis under its canopy (LdNt). We assessed the biomass and temporal changes in fine roots of each species in the upper soil (50 cm depth) of each patch type at three-month intervals during 2 years. The temporal series of fine-root biomass were compared among patch types and in relation to above-ground phenology, as well as climate variables (precipitation, arid index and air temperature). Seasonal changes in fine-root biomass showed similar cycles in the three plant patches with a maximum in spring. The maximum increase in root biomass in Ld and Nt patches occurred during the onset of reproductive growth in winter and spring, respectively. Fine-root changes in LdNt patches mimicked that in Ld patches. Precipitation inputs were significantly positively and temperature negatively related to fine-root changes in Nt patches. Fine-root changes in Ld and LdNt patches were related to the aridity index (positively) and temperature (negatively). We concluded that the observed asynchronies in the date of the largest increases in root biomass and its climate control between the studied grass and shrub species could contribute to the coexistence of plants of both life forms when they overlap their root systems growing in mixed patches. Mechanisms underlying the root patterns observed should be further explored.
Fil: Rodriguez, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Bertiller, Monica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
description We described seasonal changes in fine-root biomass of a grass and a shrub dominant species in a plant community characteristic of the arid Patagonian Monte and then we inferred to want extent the observed differences could contribute to the species coexistence. We selected representative plant patches of the natural vegetation arrangement consisting of one isolated plant of the dominant shrub Larrea divaricata (Ld), grass patches formed by one or more bunches of the dominant grass Nassella tenuis (Nt), and mixed patches consisting of one individual of L. divaricata with bunches of N. tenuis under its canopy (LdNt). We assessed the biomass and temporal changes in fine roots of each species in the upper soil (50 cm depth) of each patch type at three-month intervals during 2 years. The temporal series of fine-root biomass were compared among patch types and in relation to above-ground phenology, as well as climate variables (precipitation, arid index and air temperature). Seasonal changes in fine-root biomass showed similar cycles in the three plant patches with a maximum in spring. The maximum increase in root biomass in Ld and Nt patches occurred during the onset of reproductive growth in winter and spring, respectively. Fine-root changes in LdNt patches mimicked that in Ld patches. Precipitation inputs were significantly positively and temperature negatively related to fine-root changes in Nt patches. Fine-root changes in Ld and LdNt patches were related to the aridity index (positively) and temperature (negatively). We concluded that the observed asynchronies in the date of the largest increases in root biomass and its climate control between the studied grass and shrub species could contribute to the coexistence of plants of both life forms when they overlap their root systems growing in mixed patches. Mechanisms underlying the root patterns observed should be further explored.
publishDate 2014
dc.date.none.fl_str_mv 2014-01-15
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/11336/3526
Rodriguez, Maria Victoria; Bertiller, Monica Beatriz; Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches; Wiley; Austral Ecology; 39; 5; 15-1-2014; 501-510
1442-9985
url http://hdl.handle.net/11336/3526
identifier_str_mv Rodriguez, Maria Victoria; Bertiller, Monica Beatriz; Temporal asynchrony in fine-root biomass may contribute to shrub and grass coexistence in mixed patches; Wiley; Austral Ecology; 39; 5; 15-1-2014; 501-510
1442-9985
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/aec.12110/abstract
info:eu-repo/semantics/altIdentifier/doi/DOI:10.1111/aec.12110
info:eu-repo/semantics/altIdentifier/issn/1442-9985
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 Wiley
publisher.none.fl_str_mv Wiley
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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