Processes driving nocturnal transpiration and implications for estimating land evapotranspiration

Evapotranspiration is a major component of the water cycle, yet only daytime transpiration is currently considered in Earth system and agricultural sciences. This contrasts with physiological studies where 25% or more of water losses have been reported to occur occurring overnight at leaf and plant...

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Autores: Resco de Dios, Víctor, Roy, Jacques, Ferrio Díaz, Juan Pedro, Alday, Josu G., Landais, Damien, Mileu, Alexandru, Gessler, Arthur
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/48672
Acceso en línea:https://doi.org/10.1038/srep10975
http://hdl.handle.net/10459.1/48672
Access Level:acceso abierto
Palabra clave:Stomatal conductance
Water-use
Sap flow
Photosynthesis
Plants
Aigua -- Utilització
Fotosíntesi
Plantes -- Absorció de l'aigua
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spelling Processes driving nocturnal transpiration and implications for estimating land evapotranspirationResco de Dios, VíctorRoy, JacquesFerrio Díaz, Juan PedroAlday, Josu G.Landais, DamienMileu, AlexandruGessler, ArthurStomatal conductanceWater-useSap flowPhotosynthesisPlantsAigua -- UtilitzacióFotosíntesiPlantes -- Absorció de l'aiguaEvapotranspiration is a major component of the water cycle, yet only daytime transpiration is currently considered in Earth system and agricultural sciences. This contrasts with physiological studies where 25% or more of water losses have been reported to occur occurring overnight at leaf and plant scales. This gap probably arose from limitations in techniques to measure nocturnal water fluxes at ecosystem scales, a gap we bridge here by using lysimeters under controlled environmental conditions. The magnitude of the nocturnal water losses (12-23% of daytime water losses) in rowcrop monocultures of bean (annual herb) and cotton (woody shrub) would be globally an order of magnitude higher than documented responses of global evapotranspiration to climate change (51-98 vs. 7-8 mm yr(-1)). Contrary to daytime responses and to conventional wisdom, nocturnal transpiration was not affected by previous radiation loads or carbon uptake, and showed a temporal pattern independent of vapour pressure deficit or temperature, because of endogenous controls on stomatal conductance via circadian regulation. Our results have important implications from largescale ecosystem modelling to crop production: homeostatic water losses justify simple empirical predictive functions, and circadian controls show a fine-tune control that minimizes water loss while potentially increasing posterior carbon uptake.This study benefited from the CNRS human and technical resources allocated to the ECOTRONS Research Infrastructures as well as from the state allocation ‘Investissement d’Avenir’ ANR-11-INBS-0001, ExpeER FP7 Transnational Access program, Ramón y Cajal fellowships (RYC-2012-10970 to VRD and RYC-2008-02050 to JPF), the Erasmus Mundus Master Course Mediterranean Forestry and Natural Resources Management (MEDfOR) and internal grants from UWS-HIE to VRD and ZALF to AG.Nature publishing group2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.1038/srep10975http://hdl.handle.net/10459.1/48672reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésReproducció del document publicat a https://doi.org/10.1038/srep10975Scientific reports, 2015, vol. 5, p. 1-8info:eu-repo/grantAgreement/EC/FP7/262060cc-by, (c) Resco de Dios, Víctor et al., 2015info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/oai:repositori.udl.cat:10459.1/486722026-06-24T12:42:17Z
dc.title.none.fl_str_mv Processes driving nocturnal transpiration and implications for estimating land evapotranspiration
title Processes driving nocturnal transpiration and implications for estimating land evapotranspiration
spellingShingle Processes driving nocturnal transpiration and implications for estimating land evapotranspiration
Resco de Dios, Víctor
Stomatal conductance
Water-use
Sap flow
Photosynthesis
Plants
Aigua -- Utilització
Fotosíntesi
Plantes -- Absorció de l'aigua
title_short Processes driving nocturnal transpiration and implications for estimating land evapotranspiration
title_full Processes driving nocturnal transpiration and implications for estimating land evapotranspiration
title_fullStr Processes driving nocturnal transpiration and implications for estimating land evapotranspiration
title_full_unstemmed Processes driving nocturnal transpiration and implications for estimating land evapotranspiration
title_sort Processes driving nocturnal transpiration and implications for estimating land evapotranspiration
dc.creator.none.fl_str_mv Resco de Dios, Víctor
Roy, Jacques
Ferrio Díaz, Juan Pedro
Alday, Josu G.
Landais, Damien
Mileu, Alexandru
Gessler, Arthur
author Resco de Dios, Víctor
author_facet Resco de Dios, Víctor
Roy, Jacques
Ferrio Díaz, Juan Pedro
Alday, Josu G.
Landais, Damien
Mileu, Alexandru
Gessler, Arthur
author_role author
author2 Roy, Jacques
Ferrio Díaz, Juan Pedro
Alday, Josu G.
Landais, Damien
Mileu, Alexandru
Gessler, Arthur
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Stomatal conductance
Water-use
Sap flow
Photosynthesis
Plants
Aigua -- Utilització
Fotosíntesi
Plantes -- Absorció de l'aigua
topic Stomatal conductance
Water-use
Sap flow
Photosynthesis
Plants
Aigua -- Utilització
Fotosíntesi
Plantes -- Absorció de l'aigua
description Evapotranspiration is a major component of the water cycle, yet only daytime transpiration is currently considered in Earth system and agricultural sciences. This contrasts with physiological studies where 25% or more of water losses have been reported to occur occurring overnight at leaf and plant scales. This gap probably arose from limitations in techniques to measure nocturnal water fluxes at ecosystem scales, a gap we bridge here by using lysimeters under controlled environmental conditions. The magnitude of the nocturnal water losses (12-23% of daytime water losses) in rowcrop monocultures of bean (annual herb) and cotton (woody shrub) would be globally an order of magnitude higher than documented responses of global evapotranspiration to climate change (51-98 vs. 7-8 mm yr(-1)). Contrary to daytime responses and to conventional wisdom, nocturnal transpiration was not affected by previous radiation loads or carbon uptake, and showed a temporal pattern independent of vapour pressure deficit or temperature, because of endogenous controls on stomatal conductance via circadian regulation. Our results have important implications from largescale ecosystem modelling to crop production: homeostatic water losses justify simple empirical predictive functions, and circadian controls show a fine-tune control that minimizes water loss while potentially increasing posterior carbon uptake.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1038/srep10975
http://hdl.handle.net/10459.1/48672
url https://doi.org/10.1038/srep10975
http://hdl.handle.net/10459.1/48672
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a https://doi.org/10.1038/srep10975
Scientific reports, 2015, vol. 5, p. 1-8
info:eu-repo/grantAgreement/EC/FP7/262060
dc.rights.none.fl_str_mv cc-by, (c) Resco de Dios, Víctor et al., 2015
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
rights_invalid_str_mv cc-by, (c) Resco de Dios, Víctor et al., 2015
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Nature publishing group
publisher.none.fl_str_mv Nature publishing group
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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