Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees
- Autores
- Scholz, Fabian Gustavo; Bucci, Sandra Janet; Goldstein, Guillermo Hernan; Meinzer, Frederick C.; Franco, Augusto C.; Miralles Wilhelm, Fernando
- Año de publicación
- 2007
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Under certain environmental conditions, nocturnal transpiration can be relatively high in temperate and tropical woody species. We have previously shown that nocturnal sap flow accounts for up to 28% of total daily transpiration in woody species growing in a nutrient-poor Brazilian Cerrado ecosystem. In the present study, we assessed the effect of increased nutrient supply on nocturnal transpiration in three dominant Cerrado tree species to explore the hypothesis that, in nutrient-poor systems, continued transpiration at night may enhance delivery of nutrients to root-absorbing surfaces. We compared nocturnal transpiration of trees growing in unfertilized plots and plots to which nitrogen (N) and phosphorus (P) had been added twice yearly from 1998 to 2005. Three independent indicators of nocturnal transpiration were evaluated: sap flow in terminal branches, stomatal conductance (gs), and disequilibrium in water potential between covered and exposed leaves (ΔΨL). In the unfertilized trees, about 25% of the total daily sap flow occurred at night. Nocturnal sap flow was consistently lower in the N- and P-fertilized trees, significantly so in trees in the N treatment. Similarly, nocturnal gs was consistently lower in fertilized trees than in unfertilized trees where it sometimes reached values of 150 mmol m−2 s−1 by the end of the dark period. Predawn gs and the percentage of nocturnal sap flow were linearly related. Nocturnal ΔΨL was significantly greater in the unfertilized trees than in N- and P-fertilized trees. The absolute magnitude of ΔΨL increased linearly with the percentage of nocturnal sap flow. These results are consistent with the idea that enhancing nutrient uptake by allowing additional transpiration to occur at night when evaporative demand is lower may avoid excessive dehydration associated with increased stomatal opening during the day when evaporative demand is high.
Fil: Scholz, Fabian Gustavo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bucci, Sandra Janet. University of Miami; Estados Unidos. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Goldstein, Guillermo Hernan. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina. University of Miami; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Meinzer, Frederick C.. USDA Forest Service. Forestry Sciences Laboratory; Estados Unidos
Fil: Franco, Augusto C.. Universidade do Brasília; Brasil
Fil: Miralles Wilhelm, Fernando. Florida International University; Estados Unidos - Materia
-
CERRADO
LEAF WATER POTENTIAL
STOMATAL CONDUCTANCE
TRANSPIRATION - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/101274
Ver los metadatos del registro completo
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Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna treesScholz, Fabian GustavoBucci, Sandra JanetGoldstein, Guillermo HernanMeinzer, Frederick C.Franco, Augusto C.Miralles Wilhelm, FernandoCERRADOLEAF WATER POTENTIALSTOMATAL CONDUCTANCETRANSPIRATIONhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Under certain environmental conditions, nocturnal transpiration can be relatively high in temperate and tropical woody species. We have previously shown that nocturnal sap flow accounts for up to 28% of total daily transpiration in woody species growing in a nutrient-poor Brazilian Cerrado ecosystem. In the present study, we assessed the effect of increased nutrient supply on nocturnal transpiration in three dominant Cerrado tree species to explore the hypothesis that, in nutrient-poor systems, continued transpiration at night may enhance delivery of nutrients to root-absorbing surfaces. We compared nocturnal transpiration of trees growing in unfertilized plots and plots to which nitrogen (N) and phosphorus (P) had been added twice yearly from 1998 to 2005. Three independent indicators of nocturnal transpiration were evaluated: sap flow in terminal branches, stomatal conductance (gs), and disequilibrium in water potential between covered and exposed leaves (ΔΨL). In the unfertilized trees, about 25% of the total daily sap flow occurred at night. Nocturnal sap flow was consistently lower in the N- and P-fertilized trees, significantly so in trees in the N treatment. Similarly, nocturnal gs was consistently lower in fertilized trees than in unfertilized trees where it sometimes reached values of 150 mmol m−2 s−1 by the end of the dark period. Predawn gs and the percentage of nocturnal sap flow were linearly related. Nocturnal ΔΨL was significantly greater in the unfertilized trees than in N- and P-fertilized trees. The absolute magnitude of ΔΨL increased linearly with the percentage of nocturnal sap flow. These results are consistent with the idea that enhancing nutrient uptake by allowing additional transpiration to occur at night when evaporative demand is lower may avoid excessive dehydration associated with increased stomatal opening during the day when evaporative demand is high.Fil: Scholz, Fabian Gustavo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bucci, Sandra Janet. University of Miami; Estados Unidos. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Goldstein, Guillermo Hernan. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina. University of Miami; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Meinzer, Frederick C.. USDA Forest Service. Forestry Sciences Laboratory; Estados UnidosFil: Franco, Augusto C.. Universidade do Brasília; BrasilFil: Miralles Wilhelm, Fernando. Florida International University; Estados UnidosOxford University Press2007-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/101274Scholz, Fabian Gustavo; Bucci, Sandra Janet; Goldstein, Guillermo Hernan; Meinzer, Frederick C.; Franco, Augusto C.; et al.; Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees; Oxford University Press; Tree Physiology; 27; 4; 1-2007; 551-5590829-318XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/treephys/27.4.551info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/treephys/article/27/4/551/1666108info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:04:13Zoai:ri.conicet.gov.ar:11336/101274instacron: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 10:04:14.073CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees |
title |
Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees |
spellingShingle |
Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees Scholz, Fabian Gustavo CERRADO LEAF WATER POTENTIAL STOMATAL CONDUCTANCE TRANSPIRATION |
title_short |
Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees |
title_full |
Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees |
title_fullStr |
Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees |
title_full_unstemmed |
Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees |
title_sort |
Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees |
dc.creator.none.fl_str_mv |
Scholz, Fabian Gustavo Bucci, Sandra Janet Goldstein, Guillermo Hernan Meinzer, Frederick C. Franco, Augusto C. Miralles Wilhelm, Fernando |
author |
Scholz, Fabian Gustavo |
author_facet |
Scholz, Fabian Gustavo Bucci, Sandra Janet Goldstein, Guillermo Hernan Meinzer, Frederick C. Franco, Augusto C. Miralles Wilhelm, Fernando |
author_role |
author |
author2 |
Bucci, Sandra Janet Goldstein, Guillermo Hernan Meinzer, Frederick C. Franco, Augusto C. Miralles Wilhelm, Fernando |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
CERRADO LEAF WATER POTENTIAL STOMATAL CONDUCTANCE TRANSPIRATION |
topic |
CERRADO LEAF WATER POTENTIAL STOMATAL CONDUCTANCE TRANSPIRATION |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Under certain environmental conditions, nocturnal transpiration can be relatively high in temperate and tropical woody species. We have previously shown that nocturnal sap flow accounts for up to 28% of total daily transpiration in woody species growing in a nutrient-poor Brazilian Cerrado ecosystem. In the present study, we assessed the effect of increased nutrient supply on nocturnal transpiration in three dominant Cerrado tree species to explore the hypothesis that, in nutrient-poor systems, continued transpiration at night may enhance delivery of nutrients to root-absorbing surfaces. We compared nocturnal transpiration of trees growing in unfertilized plots and plots to which nitrogen (N) and phosphorus (P) had been added twice yearly from 1998 to 2005. Three independent indicators of nocturnal transpiration were evaluated: sap flow in terminal branches, stomatal conductance (gs), and disequilibrium in water potential between covered and exposed leaves (ΔΨL). In the unfertilized trees, about 25% of the total daily sap flow occurred at night. Nocturnal sap flow was consistently lower in the N- and P-fertilized trees, significantly so in trees in the N treatment. Similarly, nocturnal gs was consistently lower in fertilized trees than in unfertilized trees where it sometimes reached values of 150 mmol m−2 s−1 by the end of the dark period. Predawn gs and the percentage of nocturnal sap flow were linearly related. Nocturnal ΔΨL was significantly greater in the unfertilized trees than in N- and P-fertilized trees. The absolute magnitude of ΔΨL increased linearly with the percentage of nocturnal sap flow. These results are consistent with the idea that enhancing nutrient uptake by allowing additional transpiration to occur at night when evaporative demand is lower may avoid excessive dehydration associated with increased stomatal opening during the day when evaporative demand is high. Fil: Scholz, Fabian Gustavo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Bucci, Sandra Janet. University of Miami; Estados Unidos. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Goldstein, Guillermo Hernan. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina. University of Miami; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Meinzer, Frederick C.. USDA Forest Service. Forestry Sciences Laboratory; Estados Unidos Fil: Franco, Augusto C.. Universidade do Brasília; Brasil Fil: Miralles Wilhelm, Fernando. Florida International University; Estados Unidos |
description |
Under certain environmental conditions, nocturnal transpiration can be relatively high in temperate and tropical woody species. We have previously shown that nocturnal sap flow accounts for up to 28% of total daily transpiration in woody species growing in a nutrient-poor Brazilian Cerrado ecosystem. In the present study, we assessed the effect of increased nutrient supply on nocturnal transpiration in three dominant Cerrado tree species to explore the hypothesis that, in nutrient-poor systems, continued transpiration at night may enhance delivery of nutrients to root-absorbing surfaces. We compared nocturnal transpiration of trees growing in unfertilized plots and plots to which nitrogen (N) and phosphorus (P) had been added twice yearly from 1998 to 2005. Three independent indicators of nocturnal transpiration were evaluated: sap flow in terminal branches, stomatal conductance (gs), and disequilibrium in water potential between covered and exposed leaves (ΔΨL). In the unfertilized trees, about 25% of the total daily sap flow occurred at night. Nocturnal sap flow was consistently lower in the N- and P-fertilized trees, significantly so in trees in the N treatment. Similarly, nocturnal gs was consistently lower in fertilized trees than in unfertilized trees where it sometimes reached values of 150 mmol m−2 s−1 by the end of the dark period. Predawn gs and the percentage of nocturnal sap flow were linearly related. Nocturnal ΔΨL was significantly greater in the unfertilized trees than in N- and P-fertilized trees. The absolute magnitude of ΔΨL increased linearly with the percentage of nocturnal sap flow. These results are consistent with the idea that enhancing nutrient uptake by allowing additional transpiration to occur at night when evaporative demand is lower may avoid excessive dehydration associated with increased stomatal opening during the day when evaporative demand is high. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-01 |
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/11336/101274 Scholz, Fabian Gustavo; Bucci, Sandra Janet; Goldstein, Guillermo Hernan; Meinzer, Frederick C.; Franco, Augusto C.; et al.; Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees; Oxford University Press; Tree Physiology; 27; 4; 1-2007; 551-559 0829-318X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/101274 |
identifier_str_mv |
Scholz, Fabian Gustavo; Bucci, Sandra Janet; Goldstein, Guillermo Hernan; Meinzer, Frederick C.; Franco, Augusto C.; et al.; Removal of nutrient limitations by long-term fertilization decreases nocturnal water loss in savanna trees; Oxford University Press; Tree Physiology; 27; 4; 1-2007; 551-559 0829-318X CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1093/treephys/27.4.551 info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/treephys/article/27/4/551/1666108 |
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 |
Oxford University Press |
publisher.none.fl_str_mv |
Oxford University Press |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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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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1844613866589257728 |
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13.070432 |