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Plant hydraulic modelling of leaf and canopy fuel moisture content reveals increasing vulnerability of a Mediterranean forest to wildfires under extreme drought

hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorRUFFAULT, Julien
hal.structure.identifierUniversité de Montpellier [UM]
hal.structure.identifierCentre d’Ecologie Fonctionnelle et Evolutive [CEFE]
dc.contributor.authorLIMOUSIN, Jean‐marc
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorPIMONT, François
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorDUPUY, Jean‐luc
hal.structure.identifierCREAF - Centre for Ecological Research and Applied Forestries
dc.contributor.authorDE CÀCERES, Miquel
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorCOCHARD, Hervé
hal.structure.identifierCentre d’Ecologie Fonctionnelle et Evolutive [CEFE]
dc.contributor.authorMOUILLOT, Florent
hal.structure.identifierUniversity of Tasmania [Hobart, Australia] [UTAS]
dc.contributor.authorBLACKMAN, Chris
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorTORRES-RUIZ, José
hal.structure.identifierUS Forest Service
dc.contributor.authorPARSONS, Russell
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMORENO, Myriam
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierUniversität Ulm - Ulm University [Ulm, Allemagne]
dc.contributor.authorJANSEN, Steven
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorOLIOSO, Albert
hal.structure.identifierWestern Sydney University
dc.contributor.authorCHOAT, Brendan
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMARTIN-STPAUL, Nicolas
dc.date.issued2023-02
dc.identifier.issn0028-646X
dc.description.abstractEnFuel moisture content (FMC) is a crucial driver of forest fires in many regions world-wide. Yet, the dynamics of FMC in forest canopies as well as their physiological and environmental determinants remain poorly understood, especially under extreme drought.We embedded a FMC module in the trait-based, plant-hydraulic SurEau-Ecos model to provide innovative process-based predictions of leaf live fuel moisture content (LFMC) and canopy fuel moisture content (CFMC) based on leaf water potential (psi Leaf$$ {\psi}_{\mathrm{Leaf}} $$). SurEau-Ecos-FMC relies on pressure-volume (p-v) curves to simulate LFMC and vulnerability curves to cavitation to simulate foliage mortality.SurEau-Ecos-FMC accurately reproduced psi Leaf$$ {\psi}_{\mathrm{Leaf}} $$ and LFMC dynamics as well as the occurrence of foliage mortality in a Mediterranean Quercus ilex forest. Several traits related to water use (leaf area index, available soil water, and transpiration regulation), vulnerability to cavitation, and p-v curves (full turgor osmotic potential) had the greatest influence on LFMC and CFMC dynamics. As the climate gets drier, our results showed that drought-induced foliage mortality is expected to increase, thereby significantly decreasing CFMC.Our results represent an important advance in our capacity to understand and predict the sensitivity of forests to wildfires.
dc.description.sponsorshipComprendre les effets combinés des stress hydriques et thermiques sur la mortalité des arbres - ANR-18-CE20-0005
dc.description.sponsorshipANAEE-Services
dc.language.isoen
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enclimate changed
dc.subject.enrought
dc.subject.enforest flammability
dc.subject.enlive fuel moisture content
dc.subject.enplant hydraulics
dc.subject.enprocess-based modelling
dc.subject.entree mortality
dc.subject.enwildfire
dc.title.enPlant hydraulic modelling of leaf and canopy fuel moisture content reveals increasing vulnerability of a Mediterranean forest to wildfires under extreme drought
dc.typeArticle de revue
dc.identifier.doi10.1111/nph.18614
dc.subject.halSciences de l'environnement
bordeaux.journalNew Phytologist
bordeaux.page1256-1269
bordeaux.volume237
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-04047940
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04047940v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=New%20Phytologist&rft.date=2023-02&rft.volume=237&rft.issue=4&rft.spage=1256-1269&rft.epage=1256-1269&rft.eissn=0028-646X&rft.issn=0028-646X&rft.au=RUFFAULT,%20Julien&LIMOUSIN,%20Jean%E2%80%90marc&PIMONT,%20Fran%C3%A7ois&DUPUY,%20Jean%E2%80%90luc&DE%20C%C3%80CERES,%20Miquel&rft.genre=article


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