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Biophysical modelling of intra-ring variations in tracheid features and wood density of Pinus pinaster trees exposed to seasonal droughts

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierBangor University
dc.contributor.authorWILKINSON, Sarah
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorOGÉE, Jérôme
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDOMEC, Jean-Christophe
hal.structure.identifierBangor University
dc.contributor.authorRAYMENT, Mark
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWINGATE, Lisa
dc.date.accessioned2024-04-08T12:03:10Z
dc.date.available2024-04-08T12:03:10Z
dc.date.issued2015
dc.identifier.issn0829-318X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196251
dc.description.abstractEnProcess-based models that link seasonally varying environmental signals to morphological features within tree rings are essential tools to predict tree growth response and commercially important wood quality traits under future climate scenarios. This study evaluated model portrayal of radial growth and wood anatomy observations within a mature maritime pine (Pinus pinaster (L.) Aït.) stand exposed to seasonal droughts. Intra-annual variations in tracheid anatomy and wood density were identified through image analysis and X-ray densitometry on stem cores covering the growth period 1999–2010. A cambial growth model was integrated with modelled plant water status and sugar availability from the soil–plant–atmosphere transfer model MuSICA to generate estimates of cell number, cell volume, cell mass and wood density on a weekly time step. The model successfully predicted inter-annual variations in cell number, ring width and maximum wood density. The model was also able to predict the occurrence of special anatomical features such as intra-annual density fluctuations (IADFs) in growth rings. Since cell wall thickness remained surprisingly constant within and between growth rings, variations in wood density were primarily the result of variations in lumen diameter, both in the model and anatomical data. In the model, changes in plant water status were identified as the main driver of the IADFs through a direct effect on cell volume. The anatomy data also revealed that a trade-off existed between hydraulic safety and hydraulic efficiency. Although a simplified description of cambial physiology is presented, this integrated modelling approach shows potential value for identifying universal patterns of tree-ring growth and anatomical features over a broad climatic gradient.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subject.enIADF
dc.subject.enMuSICA
dc.subject.enwood anatomy
dc.subject.enwood formation
dc.title.enBiophysical modelling of intra-ring variations in tracheid features and wood density of Pinus pinaster trees exposed to seasonal droughts
dc.typeArticle de revue
dc.identifier.doi10.1093/treephys/tpv010
dc.subject.halSciences de l'environnement/Milieux et Changements globaux
bordeaux.journalTree Physiology
bordeaux.page305-318
bordeaux.volume35
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue3
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02631651
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02631651v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Tree%20Physiology&rft.date=2015&rft.volume=35&rft.issue=3&rft.spage=305-318&rft.epage=305-318&rft.eissn=0829-318X&rft.issn=0829-318X&rft.au=WILKINSON,%20Sarah&OG%C3%89E,%20J%C3%A9r%C3%B4me&DOMEC,%20Jean-Christophe&RAYMENT,%20Mark&WINGATE,%20Lisa&rft.genre=article


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