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Tree drought–mortality risk depends more on intrinsic species resistance than on stand species diversity

hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
dc.contributor.authorDECARSIN, Renaud
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
hal.structure.identifierEscola Superior de Agricultura "Luiz de Queiroz" [ESALQ]
dc.contributor.authorGUILLEMOT, Joannès
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
hal.structure.identifierCentre de Coopération Internationale en Recherche Agronomique pour le Développement [Cirad]
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
dc.contributor.authorLE MAIRE, Guerric
hal.structure.identifierUniversiteit Gent = Ghent University = Université de Gand [UGENT]
dc.contributor.authorBLONDEEL, Haben
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorMEREDIEU, Céline
hal.structure.identifierPlant Health Institute of Montpellier [UMR PHIM]
dc.contributor.authorACHARD, Emma
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorBONAL, Damien
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.authorCORSO, Déborah
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorDOUCET, Zoé
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorDRUEL, Arsène
hal.structure.identifierSwiss Federal Institute for Forest, Snow and Landscape Research WSL
dc.contributor.authorGROSSIORD, Charlotte
hal.structure.identifierInstituto de Recursos Naturales y Agrobiología de Sevilla [IRNAS]
dc.contributor.authorTORRES-RUIZ, José Manuel
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorBAUHUS, Jürgen
hal.structure.identifierBrno University of Technology [Brno] [BUT]
dc.contributor.authorGODBOLD, Douglas
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorHAJEK, Peter
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorJACTEL, Hervé
hal.structure.identifierSwedish University of Agricultural Sciences = Sveriges lantbruksuniversitet [SLU]
dc.contributor.authorJENSEN, Joel
hal.structure.identifierNational Research Council of Italy | Consiglio Nazionale delle Ricerche [CNR]
dc.contributor.authorMEREU, Simone
hal.structure.identifierEarth and Life Institute [Louvain-La-Neuve] [ELI]
hal.structure.identifierUniversité Catholique de Louvain = Catholic University of Louvain [UCL]
dc.contributor.authorPONETTE, Quentin
hal.structure.identifierMendel University in Brno [MENDELU]
hal.structure.identifierVienna Scientific Instruments [VSI]
hal.structure.identifierUniversität für Bodenkultur Wien = University of Natural Resources and Life Sciences [Vienne, Autriche] [BOKU]
dc.contributor.authorREWALD, Boris
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorRUFFAULT, Julien
dc.contributor.authorSANDÉN, Hans
dc.contributor.authorSCHERER-LORENZEN, Michael
dc.contributor.authorSERRANO-LEÓN, Hernán
dc.contributor.authorSIMIONI, Guillaume
dc.contributor.authorVERHEYEN, Kris
dc.contributor.authorWERNER, Ramona
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMARTIN-STPAUL, Nicolas
dc.date.issued2024-09-24
dc.identifier.issn1354-1013
dc.description.abstractEnAbstract Increasing tree diversity is considered a key management option to adapt forests to climate change. However, the effect of species diversity on a forest's ability to cope with extreme drought remains elusive. In this study, we assessed drought tolerance (xylem vulnerability to cavitation) and water stress (water potential), and combined them into a metric of drought–mortality risk (hydraulic safety margin) during extreme 2021 or 2022 summer droughts in five European tree diversity experiments encompassing different biomes. Overall, we found that drought–mortality risk was primarily driven by species identity (56.7% of the total variability), while tree diversity had a much lower effect (8% of the total variability). This result remained valid at the local scale (i.e within experiment) and across the studied European biomes. Tree diversity effect on drought–mortality risk was mediated by changes in water stress intensity, not by changes in xylem vulnerability to cavitation. Significant diversity effects were observed in all experiments, but those effects often varied from positive to negative across mixtures for a given species. Indeed, we found that the composition of the mixtures (i.e., the identities of the species mixed), but not the species richness of the mixture per se, is a driver of tree drought–mortality risk. This calls for a better understanding of the underlying mechanisms before tree diversity can be considered an operational adaption tool to extreme drought. Forest diversification should be considered jointly with management strategies focussed on favouring drought‐tolerant species.
dc.language.isoen
dc.publisherWiley
dc.title.enTree drought–mortality risk depends more on intrinsic species resistance than on stand species diversity
dc.typeArticle de revue
dc.identifier.doi10.1111/gcb.17503
dc.subject.halSciences de l'environnement
bordeaux.journalGlobal Change Biology
bordeaux.volume30
bordeaux.issue9
bordeaux.peerReviewedoui
hal.identifierhal-04872800
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04872800v1
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