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Vulnerability to xylem embolism as a major correlate of the environmental distribution of rain forest species on a tropical island

hal.structure.identifierBotanique et Modélisation de l'Architecture des Plantes et des Végétations [UMR AMAP]
dc.contributor.authorTRUEBA, Santiago
hal.structure.identifierBotanique et Modélisation de l'Architecture des Plantes et des Végétations [UMR AMAP]
dc.contributor.authorPOUTEAU, Robin
hal.structure.identifierNaturalis Biodiversity Center [Leiden]
dc.contributor.authorLENS, Frederic
hal.structure.identifierTulane University
dc.contributor.authorFEILD, Taylor S.
hal.structure.identifierBotanique et Modélisation de l'Architecture des Plantes et des Végétations [UMR AMAP]
dc.contributor.authorISNARD, Sandrine
hal.structure.identifierUniversidad Nacional Autónoma de México = National Autonomous University of Mexico [UNAM]
dc.contributor.authorOLSON, Mark E.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
dc.date.issued2017
dc.identifier.issn0140-7791
dc.description.abstractEnIncreases in drought-induced tree mortality are being observed in tropical rain forests worldwide and are also likely to affect the geographical distribution of tropical vegetation. However, the mechanisms underlying the drought vulnerability and environmental distribution of tropical species have been little studied. We measured vulnerability to xylem embolism (P50) of 13 woody species endemic to New Caledonia and with different xylem conduit morphologies. We examined the relation between P50, along with other leaf and xylem functional traits, and a range of habitat variables. Selected species had P50 values ranging between −4.03 and −2.00 MPa with most species falling in a narrow range of resistance to embolism above −2.7 MPa. Embolism vulnerability was significantly correlated with elevation, mean annual temperature and percentage of species occurrences located in rain forest habitats. Xylem conduit type did not explain variation in P50. Commonly used functional traits such as wood density and leaf traits were not related to embolism vulnerability. Xylem embolism vulnerability stands out among other commonly used functional traits as a major driver of species environmental distribution. Drought-induced xylem embolism vulnerability behaves as a physiological trait closely associated with the habitat occupation of rain forest woody species.
dc.language.isoen
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.subjectangiosperme
dc.subjectxylème
dc.subjectforêt tropicale
dc.subjectnouvelle calédonie
dc.subjectdiversification des espèces
dc.subjectcavitation
dc.subject.enangiosperms
dc.subject.endrought resistance
dc.subject.enelevation
dc.subject.enenvironmental gradients
dc.subject.enfunctional traits
dc.subject.enwood density
dc.subject.envesselless angiosperms
dc.subject.enxylem
dc.subject.entropical forest
dc.subject.enspecies diversification
dc.title.enVulnerability to xylem embolism as a major correlate of the environmental distribution of rain forest species on a tropical island
dc.typeArticle de revue
dc.identifier.doi10.1111/pce.12859
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalPlant, Cell and Environment
bordeaux.page277-289
bordeaux.volume40
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-01605023
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01605023v1
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