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Multiyear drought strengthens positive and negative functional diversity effects on tree growth response

hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorSERRANO-LEÓN, Hernán
hal.structure.identifierUniversiteit Gent = Ghent University = Université de Gand [UGENT]
dc.contributor.authorBLONDEEL, Haben
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorGLENZ, Paula
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorSTEURER, Johannes
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorSCHNABEL, Florian
hal.structure.identifierUniversiteit Gent = Ghent University = Université de Gand [UGENT]
dc.contributor.authorBAETEN, Lander
hal.structure.identifierEcologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
dc.contributor.authorGUILLEMOT, Joannès
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMARTIN-STPAUL, Nicolas
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorSKIADARESIS, Georgios
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorSCHERER-LORENZEN, Michael
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorBONAL, Damien
hal.structure.identifierUniversiteit Gent = Ghent University = Université de Gand [UGENT]
dc.contributor.authorBOONE, Matthieu
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 des Forêts Méditerranéennes [URFM]
dc.contributor.authorDRUEL, Arsène
hal.structure.identifierMendel University in Brno [MENDELU]
dc.contributor.authorGODBOLD, Douglas L.
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorGONG, Jialiang
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorHAJEK, Peter
hal.structure.identifierInstitut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement [INRAE]
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorJACTEL, Hervé
hal.structure.identifierRoyal Holloway [University of London] [RHUL]
dc.contributor.authorKORICHEVA, Julia
hal.structure.identifierInstitute for BioEconomy [Sesto Fiorentino] [IBE | CNR]
dc.contributor.authorMEREU, Simone
hal.structure.identifierUniversité Catholique de Louvain = Catholic University of Louvain [UCL]
dc.contributor.authorPONETTE, Quentin
hal.structure.identifierMendel University in Brno [MENDELU]
dc.contributor.authorREWALD, Boris
hal.structure.identifierUniversität für Bodenkultur Wien = University of Natural Resources and Life Sciences [Vienne, Autriche] [BOKU]
dc.contributor.authorSANDÉN, Hans
hal.structure.identifierUniversiteit Gent = Ghent University = Université de Gand [UGENT]
dc.contributor.authorVAN DEN BULCKE, Jan
hal.structure.identifierUniversiteit Gent = Ghent University = Université de Gand [UGENT]
dc.contributor.authorVERHEYEN, Kris
hal.structure.identifierUniversität für Bodenkultur Wien = University of Natural Resources and Life Sciences [Vienne, Autriche] [BOKU]
dc.contributor.authorWERNER, Ramona
hal.structure.identifierAlbert-Ludwigs-Universität Freiburg = University of Freiburg
dc.contributor.authorBAUHUS, Jürgen
dc.date.accessioned2025-10-21T02:01:48Z
dc.date.available2025-10-21T02:01:48Z
dc.date.created2025
dc.date.issued2025
dc.identifier.issn1354-1013
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/207851
dc.description.abstractEnMixed-species forests are proposed to enhance tree resistance and resilience to drought. However, growing evidence shows that tree species richness does not consistently improve tree growth responses to drought. The underlying mechanisms remain uncertain, especially under unprecedented multiyear droughts. We used a network of planted tree diversity experiments to investigate how neighborhood tree diversity and species' functional traits influence individual tree responses to drought. We analyzed tree cores (948 trees across 16 species) from nine young experiments across Europe featuring tree species richness gradients (1–6 species), which experienced recent severe droughts. Radial growth response to drought was quantified as tree-ring biomass increment using X-ray computed tomography. We applied hydraulic trait-based growth models to analyze single-year drought responses across all sites and site-specific responses during consecutive drought years. Growth responses to a single-year drought were partially explained by the focal species' hydraulic safety margin (representing species' drought tolerance) and drought intensity, but were independent of neighborhood species richness. The effects of neighborhood functional diversity on growth responses shifted from positive to negative with increasing drought duration during a single growing season. Tree diversity effects on growth responses strengthened during consecutive drought years and were site-specific with contrasting directions (both positive and negative). This indicates opposing diversity effects pathways under consecutive drought events, possibly resulting from competitive release or greater water consumption in diverse mixtures. We conclude that tree diversity effects on growth under single-year droughts may differ considerably from responses to consecutive drought years. Our study highlights the need to consider trait-based approaches (specifically, hydraulic traits) and neighborhood scale processes to understand the multifaceted responses of tree mixtures under prolonged drought stress. This experimental approach provides a robust framework to test biodiversity-ecosystem functioning (BEF) relationships relevant for young, planted forests under increased drought stress.
dc.description.sponsorshipMixed Forest plantations for climate Change mitigation and adaptation.
dc.language.isoen
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subjecttolérance à la sécheresse
dc.subjectimpact sur l'environnement
dc.subjectDrought stress
dc.subjectcroissance
dc.subjectaccroissement du diamètre
dc.subjectsécheresse
dc.subjectrésistance à la sécheresse
dc.subjectFrance
dc.subjectTreeDivNet
dc.subjectFunctional traits
dc.subjectBiodiversity-ecosystem functioning
dc.subjectMixed-species forests
dc.subjectTree diversity
dc.subjectstress dû à la sécheresse
dc.subjectchangement climatique
dc.subjectrésilience des forêts
dc.subjectbiodiversité
dc.subjectTree rings
dc.subjectX-ray computed tomography
dc.title.enMultiyear drought strengthens positive and negative functional diversity effects on tree growth response
dc.typeArticle de revue
dc.identifier.doi10.1111/gcb.70394
dc.subject.halSciences du Vivant [q-bio]
dc.description.sponsorshipEuropeAn ERA-Net in biodiversity research
bordeaux.journalGlobal Change Biology
bordeaux.pagee70394
bordeaux.volume31
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue9
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-05268156
hal.version1
hal.invitednon
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-05268156v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Global%20Change%20Biology&rft.date=2025&rft.volume=31&rft.issue=9&rft.spage=e70394&rft.epage=e70394&rft.eissn=1354-1013&rft.issn=1354-1013&rft.au=SERRANO-LE%C3%93N,%20Hern%C3%A1n&BLONDEEL,%20Haben&GLENZ,%20Paula&STEURER,%20Johannes&SCHNABEL,%20Florian&rft.genre=article


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