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Beyond proxies: towards ecophysiological indicators of drought resistance for forest management

hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorCOPIE, Alice
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorSCOTTI-SAINTAGNE, Caroline
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorLEFÈVRE, François
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorCOCHARD, Hervé
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorDRUEL, Arsène
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorDUMAS, Pierre-Jean
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorGOUNELLE, Damien
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorHERBETTE, Stéphane
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorJEAN, Florence
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMARIOTTE, Nicolas
hal.structure.identifierCentre for Ecological Research and Applied Forestries = Centre de Recerca Ecologica i Aplicacions Forestals [CREAF]
hal.structure.identifierInstitució Catalana de Recerca i Estudis Avançats = Catalan Institution for Research and Advanced Studies [ICREA]
dc.contributor.authorMENCUCCINI, Maurizio
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorSCOTTI, Ivan
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMARTIN-STPAUL, Nicolas
dc.date.accessioned2025-09-26T02:01:38Z
dc.date.available2025-09-26T02:01:38Z
dc.date.issued2025-09-30
dc.identifier.issn0829-318X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/207668
dc.description.abstractEnAs drought-induced mortality increases globally in forest biomes, it becomes necessary for foresters to have access to reliable predictors of species vulnerability to drought and mortality risk under different climatic scenarios. On one hand, there exist several ‘operational’ indicators of drought resistance, which are based on technical literature, observations, expert knowledge and species bioclimate. However, they are not available for all species, reduce a species to a single value and have the same limitations as species distribution models. On the other hand, different traits can be measured to estimate mechanistically species’ vulnerability to drought and, in particular, to hydraulic failure, a key process of tree mortality under drought. These traits typically include xylem vulnerability to cavitation, stomatal regulation, minimum leaf conductance and water storage capacity. However, the mechanistic approach, based on functional traits, has never been compared with the operational approach. In this study, we review if indicators commonly used by foresters provide information on Abies species’ vulnerability to hydraulic failure. We measured a set of traits in a common garden experiment of closely related Mediterranean Abies species. These traits were used to configure and parametrize SurEau, a plant hydraulic model dedicated to simulating plant mortality risk due to hydraulic failure under extreme drought conditions. SurEau was then used to compute a single indicator of vulnerability (time to hydraulic failure — THF) and to assess mortality risk in future climate. We found that among circum-Mediterranean firs, a high THF was largely driven by differences in minimum leaf conductance. Some operational indicators are good proxies of THF but fail to distinguish between closely related Mediterranean Abies species. We argue that the mechanistic approach could help foresters in species selection and in estimating the risk faced by forest tree species in a changing climate. While accounting for the variability of traits, hydraulic models can be forced with different climatic scenarios, thereby allowing hydraulic failure risk assessment by the end of the century.
dc.description.sponsorshipLes flux de gènes à la rescousse: Nécessité, efficacité, risques et implications éthiques des manipulations de flux de gènes pour améliorer l'adaptation au changement climatiques de plantes longévives - ANR-22-CE02-0010
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.subject.entrees
dc.subject.enmodel
dc.subject.enintegrated traits
dc.subject.enhydraulic failure
dc.subject.enAbies
dc.title.enBeyond proxies: towards ecophysiological indicators of drought resistance for forest management
dc.typeArticle de revue
dc.identifier.doi10.1093/treephys/tpaf090
dc.subject.halSciences de l'environnement
bordeaux.journalTree Physiology
bordeaux.volume45
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue9
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-05283676
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-05283676v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Tree%20Physiology&rft.date=2025-09-30&rft.volume=45&rft.issue=9&rft.eissn=0829-318X&rft.issn=0829-318X&rft.au=COPIE,%20Alice&SCOTTI-SAINTAGNE,%20Caroline&LEF%C3%88VRE,%20Fran%C3%A7ois&COCHARD,%20Herv%C3%A9&DELZON,%20Sylvain&rft.genre=article


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