Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia

Autores
Bertiller, Monica Beatriz; Sain, Claudia Leticia; Carrera, Analía Lorena
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In patchy environments of arid Patagonia, males of the dioecious grass Poa ligularis dominate in N-poor microsites, while females are more common in N-rich microsites. In order to explore functional differences related to spatial segregation of the sexes, we analyzed biomass allocation and tissue N concentration in males and females of P. ligularis growing in a range of soil N concentrations (sN). Based on the general patterns of responses described for plants from N-rich and N-poor habitats, we hypothesized that (1) females, which dominate in N-rich microsites, would increase biomass allocation with increasing sN, while males, frequent in N-poor microsites, would show a limited response and (2) tissue N concentration would display a wider variation in males than females in response to changes in sN. At three sites in northern Patagonia, we randomly selected 15 plants of each sex of P. ligularis growing inside shrub patches and 15 in the interpatch areas and evaluated the biomass and N concentration of aboveground (vegetative and reproductive) and belowground structures. Biomass allocation to belowground structures and N concentration in roots increased with increasing sN for both males and females. Aboveground biomass increased with increasing sN only in females. In the N-poorest sites, we found higher N allocation to tiller crowns with increasing sN in males relative to females. In both sexes, biomass allocation to sexual reproductive structures (panicles) did not change significantly with variations in sN. These results provide partial evidence on morphological and functional dimorphism in a dioecious species with spatial segregation of the sexes.
Fil: Bertiller, Monica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Sain, Claudia Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Carrera, Analía Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Materia
BIOMASS ALLOCATION
DIOECY
NITROGEN CONCENTRATION IN PLANT TISSUES
NITROGEN CONCENTRATION IN ROOTS
NITROGEN GRADIENTS IN SOIL
SPATIAL SEGREGATION OF THE SEXES
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:11336/97782
Acceder
id CONICETDig_a98982eb17e21506b1182e90d26756db
oai_identifier_str oai:ri.conicet.gov.ar:11336/97782
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern PatagoniaBertiller, Monica BeatrizSain, Claudia LeticiaCarrera, Analía LorenaBIOMASS ALLOCATIONDIOECYNITROGEN CONCENTRATION IN PLANT TISSUESNITROGEN CONCENTRATION IN ROOTSNITROGEN GRADIENTS IN SOILSPATIAL SEGREGATION OF THE SEXEShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1In patchy environments of arid Patagonia, males of the dioecious grass Poa ligularis dominate in N-poor microsites, while females are more common in N-rich microsites. In order to explore functional differences related to spatial segregation of the sexes, we analyzed biomass allocation and tissue N concentration in males and females of P. ligularis growing in a range of soil N concentrations (sN). Based on the general patterns of responses described for plants from N-rich and N-poor habitats, we hypothesized that (1) females, which dominate in N-rich microsites, would increase biomass allocation with increasing sN, while males, frequent in N-poor microsites, would show a limited response and (2) tissue N concentration would display a wider variation in males than females in response to changes in sN. At three sites in northern Patagonia, we randomly selected 15 plants of each sex of P. ligularis growing inside shrub patches and 15 in the interpatch areas and evaluated the biomass and N concentration of aboveground (vegetative and reproductive) and belowground structures. Biomass allocation to belowground structures and N concentration in roots increased with increasing sN for both males and females. Aboveground biomass increased with increasing sN only in females. In the N-poorest sites, we found higher N allocation to tiller crowns with increasing sN in males relative to females. In both sexes, biomass allocation to sexual reproductive structures (panicles) did not change significantly with variations in sN. These results provide partial evidence on morphological and functional dimorphism in a dioecious species with spatial segregation of the sexes.Fil: Bertiller, Monica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Sain, Claudia Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Carrera, Analía Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaUniversity of Chicago Press2002-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/97782Bertiller, Monica Beatriz; Sain, Claudia Leticia; Carrera, Analía Lorena; Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia; University of Chicago Press; International Journal of Plant Sciences; 163; 3; 6-2002; 419-4251058-5893CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.journals.uchicago.edu/doi/abs/10.1086/339515info:eu-repo/semantics/altIdentifier/doi/10.1086/339515info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:10:26Zoai:ri.conicet.gov.ar:11336/97782instacron: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:34982025-09-10 13:10:26.493CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia
title Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia
spellingShingle Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia
Bertiller, Monica Beatriz
BIOMASS ALLOCATION
DIOECY
NITROGEN CONCENTRATION IN PLANT TISSUES
NITROGEN CONCENTRATION IN ROOTS
NITROGEN GRADIENTS IN SOIL
SPATIAL SEGREGATION OF THE SEXES
title_short Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia
title_full Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia
title_fullStr Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia
title_full_unstemmed Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia
title_sort Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia
dc.creator.none.fl_str_mv Bertiller, Monica Beatriz
Sain, Claudia Leticia
Carrera, Analía Lorena
author Bertiller, Monica Beatriz
author_facet Bertiller, Monica Beatriz
Sain, Claudia Leticia
Carrera, Analía Lorena
author_role author
author2 Sain, Claudia Leticia
Carrera, Analía Lorena
author2_role author
author
dc.subject.none.fl_str_mv BIOMASS ALLOCATION
DIOECY
NITROGEN CONCENTRATION IN PLANT TISSUES
NITROGEN CONCENTRATION IN ROOTS
NITROGEN GRADIENTS IN SOIL
SPATIAL SEGREGATION OF THE SEXES
topic BIOMASS ALLOCATION
DIOECY
NITROGEN CONCENTRATION IN PLANT TISSUES
NITROGEN CONCENTRATION IN ROOTS
NITROGEN GRADIENTS IN SOIL
SPATIAL SEGREGATION OF THE SEXES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In patchy environments of arid Patagonia, males of the dioecious grass Poa ligularis dominate in N-poor microsites, while females are more common in N-rich microsites. In order to explore functional differences related to spatial segregation of the sexes, we analyzed biomass allocation and tissue N concentration in males and females of P. ligularis growing in a range of soil N concentrations (sN). Based on the general patterns of responses described for plants from N-rich and N-poor habitats, we hypothesized that (1) females, which dominate in N-rich microsites, would increase biomass allocation with increasing sN, while males, frequent in N-poor microsites, would show a limited response and (2) tissue N concentration would display a wider variation in males than females in response to changes in sN. At three sites in northern Patagonia, we randomly selected 15 plants of each sex of P. ligularis growing inside shrub patches and 15 in the interpatch areas and evaluated the biomass and N concentration of aboveground (vegetative and reproductive) and belowground structures. Biomass allocation to belowground structures and N concentration in roots increased with increasing sN for both males and females. Aboveground biomass increased with increasing sN only in females. In the N-poorest sites, we found higher N allocation to tiller crowns with increasing sN in males relative to females. In both sexes, biomass allocation to sexual reproductive structures (panicles) did not change significantly with variations in sN. These results provide partial evidence on morphological and functional dimorphism in a dioecious species with spatial segregation of the sexes.
Fil: Bertiller, Monica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Sain, Claudia Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Carrera, Analía Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
description In patchy environments of arid Patagonia, males of the dioecious grass Poa ligularis dominate in N-poor microsites, while females are more common in N-rich microsites. In order to explore functional differences related to spatial segregation of the sexes, we analyzed biomass allocation and tissue N concentration in males and females of P. ligularis growing in a range of soil N concentrations (sN). Based on the general patterns of responses described for plants from N-rich and N-poor habitats, we hypothesized that (1) females, which dominate in N-rich microsites, would increase biomass allocation with increasing sN, while males, frequent in N-poor microsites, would show a limited response and (2) tissue N concentration would display a wider variation in males than females in response to changes in sN. At three sites in northern Patagonia, we randomly selected 15 plants of each sex of P. ligularis growing inside shrub patches and 15 in the interpatch areas and evaluated the biomass and N concentration of aboveground (vegetative and reproductive) and belowground structures. Biomass allocation to belowground structures and N concentration in roots increased with increasing sN for both males and females. Aboveground biomass increased with increasing sN only in females. In the N-poorest sites, we found higher N allocation to tiller crowns with increasing sN in males relative to females. In both sexes, biomass allocation to sexual reproductive structures (panicles) did not change significantly with variations in sN. These results provide partial evidence on morphological and functional dimorphism in a dioecious species with spatial segregation of the sexes.
publishDate 2002
dc.date.none.fl_str_mv 2002-06
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/11336/97782
Bertiller, Monica Beatriz; Sain, Claudia Leticia; Carrera, Analía Lorena; Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia; University of Chicago Press; International Journal of Plant Sciences; 163; 3; 6-2002; 419-425
1058-5893
CONICET Digital
CONICET
url http://hdl.handle.net/11336/97782
identifier_str_mv Bertiller, Monica Beatriz; Sain, Claudia Leticia; Carrera, Analía Lorena; Effect of fine-scale spatial variation of soil nitrogen on the performance of the sexes of Poa ligularis in patchy ecosystems of northern Patagonia; University of Chicago Press; International Journal of Plant Sciences; 163; 3; 6-2002; 419-425
1058-5893
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.journals.uchicago.edu/doi/abs/10.1086/339515
info:eu-repo/semantics/altIdentifier/doi/10.1086/339515
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
application/pdf
dc.publisher.none.fl_str_mv University of Chicago Press
publisher.none.fl_str_mv University of Chicago Press
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 12.993085

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