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How do leaf and ecosystem measures of water-use efficiency compare?

hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorMEDLYN, Belinda E.
hal.structure.identifierDepartment of Biological Science
dc.contributor.authorDE KAUWE, Martin G.
hal.structure.identifierEcologie et Ecophysiologie Forestières [devient SILVA en 2018] [EEF]
hal.structure.identifierDepartment of Biological Science
dc.contributor.authorLIN, Yan-Shih
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
hal.structure.identifierDepartment of Biogeochemical Integration [Jena]
dc.contributor.authorKNAUER, Jürgen
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorDUURSMA, Remko A.
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
hal.structure.identifierGraduate School of Geography
dc.contributor.authorWILLIAMS, Christopher A.
hal.structure.identifierInstitut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung [IMK-IFU]
dc.contributor.authorARNETH, Almut
hal.structure.identifierSchool of Geosciences
dc.contributor.authorCLEMENT, Rob
hal.structure.identifierOzFlux
dc.contributor.authorISAAC, Peter
hal.structure.identifierCentre d’Ecologie Fonctionnelle et Evolutive [CEFE]
hal.structure.identifierUniversité de Montpellier [UM]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
dc.contributor.authorLIMOUSIN, Jean-Marc
hal.structure.identifierDepartment of Physical Geography and Ecosystem Science [Lund]
dc.contributor.authorLINDERSON, Maj-Lena
hal.structure.identifierResearch School of Biology
hal.structure.identifierSchool of Geosciences
dc.contributor.authorMEIR, Patrick
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMARTIN-STPAUL, Nicolas
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWINGATE, Lisa
dc.date.accessioned2024-04-08T12:09:34Z
dc.date.available2024-04-08T12:09:34Z
dc.date.issued2017
dc.identifier.issn0028-646X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196584
dc.description.abstractEnThe terrestrial carbon and water cycles are intimately linked: the carbon cycle is driven by photosynthesis, while the water balance is dominated by transpiration, and both fluxes are controlled by plant stomatal conductance. The ratio between these fluxes, the plant water-use efficiency (WUE), is a useful indicator of vegetation function. WUE can be estimated using several techniques, including leaf gas exchange, stable isotope discrimination, and eddy covariance. Here we compare global compilations of data for each of these three techniques. We show that patterns of variation in WUE across plant functional types (PFTs) are not consistent among the three datasets. Key discrepancies include the following: leaf-scale data indicate differences between needleleaf and broadleaf forests, but ecosystem-scale data do not; leaf-scale data indicate differences between C3 and C4 species, whereas at ecosystem scale there is a difference between C3 and C4 crops but not grasslands; and isotope-based estimates of WUE are higher than estimates based on gas exchange for most PFTs. Our study quantifies the uncertainty associated with different methods of measuring WUE, indicates potential for bias when using WUE measures to parameterize or validate models, and indicates key research directions needed to reconcile alternative measures of WUE.
dc.language.isoen
dc.publisherWiley
dc.subjectdynamique des écosystèmes
dc.subjectEfficience d'utilisation de l'eau
dc.subjectcycle du carbone
dc.subjectphotosynthèse
dc.subjectconductance stomatique
dc.subjectutilisation de l'eau
dc.subjectréserve en eau de la plante
dc.subjectcovariance
dc.subjectbilan hydrique
dc.subjectisotope stable
dc.subject.eneddy covariance
dc.subject.enleaf gas exchange
dc.subject.enplant functional type (PFT)
dc.subject.enstable isotopes
dc.subject.enstomatal conductance
dc.subject.enwater-use efficiency
dc.subject.encarbon cycle
dc.subject.enphotosynthesis
dc.title.enHow do leaf and ecosystem measures of water-use efficiency compare?
dc.typeArticle de revue
dc.identifier.doi10.1111/nph.14626
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
dc.description.sponsorshipEuropeAgreenSkills+
bordeaux.journalNew Phytologist
bordeaux.pagenp
bordeaux.volumeEpub ahead of print
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue3
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-01606915
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01606915v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=New%20Phytologist&rft.date=2017&rft.volume=Epub%20ahead%20of%20print&rft.issue=3&rft.spage=np&rft.epage=np&rft.eissn=0028-646X&rft.issn=0028-646X&rft.au=MEDLYN,%20Belinda%20E.&DE%20KAUWE,%20Martin%20G.&LIN,%20Yan-Shih&KNAUER,%20J%C3%BCrgen&DUURSMA,%20Remko%20A.&rft.genre=article


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