Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species

Autores
Bucci, Sandra Janet; Scholz, Fabian Gustavo; Goldstein, Guillermo Hernan; Meinzer, Frederick C.; Arce, Maria Elena
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Adaptations of species to capture limiting resources is central for understanding structure and function of ecosystems. We studied the water economy of nine woody species differing in rooting depth in a Patagonian shrub steppe from southern Argentina to understand how soil water availability and rooting depth determine their hydraulic architecture. Soil water content and potentials, leaf water potentials (ΨLeaf), hydraulic conductivity, wood density (ρw), rooting depth, and specific leaf area (SLA) were measured during two summers. Water potentials in the upper soil layers during a summer drought ranged from -2.3 to -3.6 MPa, increasing to -0.05 MPa below 150 cm. Predawn ΨLeaf was used as a surrogate of weighted mean soil water potential because no statistical differences in ΨLeaf were observed between exposed and covered leaves. Species-specific differences in predawn ΨLeaf were consistent with rooting depths. Predawn ΨLeaf ranged from -4.0 MPa for shallow rooted shrubs to -1.0 MPa for deep-rooted shrubs, suggesting that the roots of the latter have access to abundant moisture, whereas shallow-rooted shrubs are adapted to use water deposited mainly by small rainfall events. Wood density was a good predictor of hydraulic conductivity and SLA. Overall, we found that shallow rooted species had efficient water transport in terms of high specific and leaf specific hydraulic conductivity, low ρw, high SLA and a low minimum ΨLeaf that exhibited strong seasonal changes, whereas deeply rooted shrubs maintained similar minimum ΨLeaf throughout the year, had stems with high ρw and low hydraulic conductivity and leaves with low SLA. These two hydraulic syndromes were the extremes of a continuum with several species occupying different portions of a gradient in hydraulic characteristics. It appears that the marginal cost of having an extensive root system (e.g., high ρw and root hydraulic resistance) contributes to low growth rates of the deeply rooted species.
Fil: Bucci, Sandra Janet. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Scholz, Fabian Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Goldstein, Guillermo Hernan. Universidad de Buenos Aires; Argentina. University of Miami; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Meinzer, Frederick C.. United States Department of Agriculture; Estados Unidos
Fil: Arce, Maria Elena. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Materia
ARID VEGETATION
HYDRAULIC CONDUCTIVITY
LEAF WATER POTENTIAL
ROOT DEPTH
WOOD DENSITY
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:11336/94244
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/94244
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody speciesBucci, Sandra JanetScholz, Fabian GustavoGoldstein, Guillermo HernanMeinzer, Frederick C.Arce, Maria ElenaARID VEGETATIONHYDRAULIC CONDUCTIVITYLEAF WATER POTENTIALROOT DEPTHWOOD DENSITYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Adaptations of species to capture limiting resources is central for understanding structure and function of ecosystems. We studied the water economy of nine woody species differing in rooting depth in a Patagonian shrub steppe from southern Argentina to understand how soil water availability and rooting depth determine their hydraulic architecture. Soil water content and potentials, leaf water potentials (ΨLeaf), hydraulic conductivity, wood density (ρw), rooting depth, and specific leaf area (SLA) were measured during two summers. Water potentials in the upper soil layers during a summer drought ranged from -2.3 to -3.6 MPa, increasing to -0.05 MPa below 150 cm. Predawn ΨLeaf was used as a surrogate of weighted mean soil water potential because no statistical differences in ΨLeaf were observed between exposed and covered leaves. Species-specific differences in predawn ΨLeaf were consistent with rooting depths. Predawn ΨLeaf ranged from -4.0 MPa for shallow rooted shrubs to -1.0 MPa for deep-rooted shrubs, suggesting that the roots of the latter have access to abundant moisture, whereas shallow-rooted shrubs are adapted to use water deposited mainly by small rainfall events. Wood density was a good predictor of hydraulic conductivity and SLA. Overall, we found that shallow rooted species had efficient water transport in terms of high specific and leaf specific hydraulic conductivity, low ρw, high SLA and a low minimum ΨLeaf that exhibited strong seasonal changes, whereas deeply rooted shrubs maintained similar minimum ΨLeaf throughout the year, had stems with high ρw and low hydraulic conductivity and leaves with low SLA. These two hydraulic syndromes were the extremes of a continuum with several species occupying different portions of a gradient in hydraulic characteristics. It appears that the marginal cost of having an extensive root system (e.g., high ρw and root hydraulic resistance) contributes to low growth rates of the deeply rooted species.Fil: Bucci, Sandra Janet. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Scholz, Fabian Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Goldstein, Guillermo Hernan. Universidad de Buenos Aires; Argentina. University of Miami; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Meinzer, Frederick C.. United States Department of Agriculture; Estados UnidosFil: Arce, Maria Elena. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaSpringer2009-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/94244Bucci, Sandra Janet; Scholz, Fabian Gustavo; Goldstein, Guillermo Hernan; Meinzer, Frederick C.; Arce, Maria Elena; Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species; Springer; Oecologia; 160; 4; 7-2009; 631-6410029-8549CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s00442-009-1331-zinfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00442-009-1331-zinfo:eu-repo/semantics/altIdentifier/url/https://www.fs.usda.gov/pnw/pubs/journals/pnw_2009_bucci001.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:08Zoai:ri.conicet.gov.ar:11336/94244instacron: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:34982025-09-29 09:36:08.693CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species
title Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species
spellingShingle Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species
Bucci, Sandra Janet
ARID VEGETATION
HYDRAULIC CONDUCTIVITY
LEAF WATER POTENTIAL
ROOT DEPTH
WOOD DENSITY
title_short Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species
title_full Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species
title_fullStr Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species
title_full_unstemmed Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species
title_sort Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species
dc.creator.none.fl_str_mv Bucci, Sandra Janet
Scholz, Fabian Gustavo
Goldstein, Guillermo Hernan
Meinzer, Frederick C.
Arce, Maria Elena
author Bucci, Sandra Janet
author_facet Bucci, Sandra Janet
Scholz, Fabian Gustavo
Goldstein, Guillermo Hernan
Meinzer, Frederick C.
Arce, Maria Elena
author_role author
author2 Scholz, Fabian Gustavo
Goldstein, Guillermo Hernan
Meinzer, Frederick C.
Arce, Maria Elena
author2_role author
author
author
author
dc.subject.none.fl_str_mv ARID VEGETATION
HYDRAULIC CONDUCTIVITY
LEAF WATER POTENTIAL
ROOT DEPTH
WOOD DENSITY
topic ARID VEGETATION
HYDRAULIC CONDUCTIVITY
LEAF WATER POTENTIAL
ROOT DEPTH
WOOD DENSITY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Adaptations of species to capture limiting resources is central for understanding structure and function of ecosystems. We studied the water economy of nine woody species differing in rooting depth in a Patagonian shrub steppe from southern Argentina to understand how soil water availability and rooting depth determine their hydraulic architecture. Soil water content and potentials, leaf water potentials (ΨLeaf), hydraulic conductivity, wood density (ρw), rooting depth, and specific leaf area (SLA) were measured during two summers. Water potentials in the upper soil layers during a summer drought ranged from -2.3 to -3.6 MPa, increasing to -0.05 MPa below 150 cm. Predawn ΨLeaf was used as a surrogate of weighted mean soil water potential because no statistical differences in ΨLeaf were observed between exposed and covered leaves. Species-specific differences in predawn ΨLeaf were consistent with rooting depths. Predawn ΨLeaf ranged from -4.0 MPa for shallow rooted shrubs to -1.0 MPa for deep-rooted shrubs, suggesting that the roots of the latter have access to abundant moisture, whereas shallow-rooted shrubs are adapted to use water deposited mainly by small rainfall events. Wood density was a good predictor of hydraulic conductivity and SLA. Overall, we found that shallow rooted species had efficient water transport in terms of high specific and leaf specific hydraulic conductivity, low ρw, high SLA and a low minimum ΨLeaf that exhibited strong seasonal changes, whereas deeply rooted shrubs maintained similar minimum ΨLeaf throughout the year, had stems with high ρw and low hydraulic conductivity and leaves with low SLA. These two hydraulic syndromes were the extremes of a continuum with several species occupying different portions of a gradient in hydraulic characteristics. It appears that the marginal cost of having an extensive root system (e.g., high ρw and root hydraulic resistance) contributes to low growth rates of the deeply rooted species.
Fil: Bucci, Sandra Janet. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Scholz, Fabian Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Goldstein, Guillermo Hernan. Universidad de Buenos Aires; Argentina. University of Miami; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Meinzer, Frederick C.. United States Department of Agriculture; Estados Unidos
Fil: Arce, Maria Elena. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
description Adaptations of species to capture limiting resources is central for understanding structure and function of ecosystems. We studied the water economy of nine woody species differing in rooting depth in a Patagonian shrub steppe from southern Argentina to understand how soil water availability and rooting depth determine their hydraulic architecture. Soil water content and potentials, leaf water potentials (ΨLeaf), hydraulic conductivity, wood density (ρw), rooting depth, and specific leaf area (SLA) were measured during two summers. Water potentials in the upper soil layers during a summer drought ranged from -2.3 to -3.6 MPa, increasing to -0.05 MPa below 150 cm. Predawn ΨLeaf was used as a surrogate of weighted mean soil water potential because no statistical differences in ΨLeaf were observed between exposed and covered leaves. Species-specific differences in predawn ΨLeaf were consistent with rooting depths. Predawn ΨLeaf ranged from -4.0 MPa for shallow rooted shrubs to -1.0 MPa for deep-rooted shrubs, suggesting that the roots of the latter have access to abundant moisture, whereas shallow-rooted shrubs are adapted to use water deposited mainly by small rainfall events. Wood density was a good predictor of hydraulic conductivity and SLA. Overall, we found that shallow rooted species had efficient water transport in terms of high specific and leaf specific hydraulic conductivity, low ρw, high SLA and a low minimum ΨLeaf that exhibited strong seasonal changes, whereas deeply rooted shrubs maintained similar minimum ΨLeaf throughout the year, had stems with high ρw and low hydraulic conductivity and leaves with low SLA. These two hydraulic syndromes were the extremes of a continuum with several species occupying different portions of a gradient in hydraulic characteristics. It appears that the marginal cost of having an extensive root system (e.g., high ρw and root hydraulic resistance) contributes to low growth rates of the deeply rooted species.
publishDate 2009
dc.date.none.fl_str_mv 2009-07
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/11336/94244
Bucci, Sandra Janet; Scholz, Fabian Gustavo; Goldstein, Guillermo Hernan; Meinzer, Frederick C.; Arce, Maria Elena; Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species; Springer; Oecologia; 160; 4; 7-2009; 631-641
0029-8549
CONICET Digital
CONICET
url http://hdl.handle.net/11336/94244
identifier_str_mv Bucci, Sandra Janet; Scholz, Fabian Gustavo; Goldstein, Guillermo Hernan; Meinzer, Frederick C.; Arce, Maria Elena; Soil water availability and rooting depth as determinants of hydraulic architecture of Patagonian woody species; Springer; Oecologia; 160; 4; 7-2009; 631-641
0029-8549
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s00442-009-1331-z
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00442-009-1331-z
info:eu-repo/semantics/altIdentifier/url/https://www.fs.usda.gov/pnw/pubs/journals/pnw_2009_bucci001.pdf
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
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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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