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Exploring the role of plant hydraulics in canopy fuel moisture content: insights from an experimental drought study on Pinus halepensis Mill. and Quercus ilex L.

hal.structure.identifierPlantes et systèmes de culture horticoles [PSH]
dc.contributor.authorCAKPO, Coffi Belmys
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorRUFFAULT, Julien
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorDUPUY, Jean-Luc
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorPIMONT, François
hal.structure.identifierEnvironnement Méditerranéen et Modélisation des Agro-Hydrosystèmes [EMMAH]
dc.contributor.authorDOUSSAN, Claude
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMORENO, Myriam
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorJEAN, Nathan
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorJEAN, Frederic
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBURLETT, Regis
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierBotanique et Modélisation de l'Architecture des Plantes et des Végétations [UMR AMAP]
dc.contributor.authorTRUEBA, Santiago
hal.structure.identifierInstituto de Recursos Naturales y Agrobiología de Sevilla [IRNAS]
dc.contributor.authorTORRES-RUIZ, José
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorCOCHARD, Hervé
hal.structure.identifierEcologie des Forêts Méditerranéennes [URFM]
dc.contributor.authorMARTIN-STPAUL, Nicolas
dc.date.issued2024-07-18
dc.identifier.issn1286-4560
dc.description.abstractEnKey Message Understanding the impact of extreme drought on the canopy fuel moisture content ( CFMC ) is crucial to anticipate the effects of climate change on wildfires. Our study demonstrates that foliage mortality, caused by leaf embolism, can substantially diminish CFMC during drought on Pinus halepensis Mill. and Quercus ilex L. It emphasizes the importance of considering plant hydraulics to improve wildfire predictions. Context Canopy fuel moisture content ( CFMC ), which represents the water-to-dry mass ratio in leaves and fine twigs within the canopy, is a major factor of fire danger across ecosystems worldwide. CFMC results from the fuel moisture content of living foliage (live fuel moisture content, LFMC ) and dead foliage (dead fuel moisture content, DFMC ) weighted by the proportion of foliage mortality in the canopy ( α Dead ). Understanding how LFMC , α Dead , and ultimately CFMC are affected during extreme drought is essential for effective wildfire planning. Aims We aimed to understand how plant hydraulics affect CFMC for different levels of soil water deficit, examining its influence on both LFMC and α Dead . Methods We conducted a drought experiment on seedlings of two Mediterranean species: Aleppo pine ( Pinus halepensis Mill.) and Holm oak ( Quercus ilex L.). Throughout the drought experiment and after rewatering, we monitored CFMC , LFMC , and α Dead along with other ecophysiological variables. Results LFMC exhibited a significant decrease during drought, and as leaf water potentials reached low levels, α Dead increased in both species, thereby reducing CFMC . Distinct water use strategies resulted in species-specific variations in dehydration dynamics. Conclusion Our findings demonstrate that as drought conditions intensify, foliage mortality might become a critical physiological factor driving the decline in CFMC .
dc.language.isoen
dc.publisherSpringer Nature (since 2011)/EDP Science (until 2010)
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enLive fuel moisture content
dc.subject.enWildfire danger
dc.subject.enMediterranean
dc.subject.enMortality
dc.subject.enTree defoliation
dc.subject.enCavitation
dc.title.enExploring the role of plant hydraulics in canopy fuel moisture content: insights from an experimental drought study on Pinus halepensis Mill. and Quercus ilex L.
dc.typeArticle de revue
dc.identifier.doi10.1186/s13595-024-01244-9
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles/Sylviculture, foresterie
bordeaux.journalAnnals of Forest Science
bordeaux.page26
bordeaux.volume81
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-04682352
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04682352v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Annals%20of%20Forest%20Science&rft.date=2024-07-18&rft.volume=81&rft.issue=1&rft.spage=26&rft.epage=26&rft.eissn=1286-4560&rft.issn=1286-4560&rft.au=CAKPO,%20Coffi%20Belmys&RUFFAULT,%20Julien&DUPUY,%20Jean-Luc&PIMONT,%20Fran%C3%A7ois&DOUSSAN,%20Claude&rft.genre=article


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