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Using δ13C and δ18O to analyze loblolly pine (Pinus taeda L.) response to experimental drought and fertilization

hal.structure.identifierDepartment of Forestry and Environmental Resources
dc.contributor.authorLIN, Wen
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierDepartment of Forestry and Environmental Resources
dc.contributor.authorDOMEC, Jean-Christophe
hal.structure.identifierDepartment of Forestry and Environmental Resources
hal.structure.identifierUS Geological Survey, Wetland and Aquatic Research Center
dc.contributor.authorWARD, Eric J.
hal.structure.identifierDepartment of Forest Ecology and Management
dc.contributor.authorMARSHALL, John
hal.structure.identifierDepartment of Forestry and Environmental Resources
dc.contributor.authorKING, John S.
hal.structure.identifierDepartment of Forest Resources and Environmental Conservation
dc.contributor.authorLAVINER, Marshall A.
hal.structure.identifierDepartment of Forest Resources and Environmental Conservation
hal.structure.identifierRayonier Inc.
dc.contributor.authorFOX, Thomas R.
hal.structure.identifierDepartment of Ecosystem Science and Management
dc.contributor.authorWEST, Jason B.
hal.structure.identifierEastern Forest Environmental Threat Assessment Center
dc.contributor.authorSUN, Ge
hal.structure.identifierEastern Forest Environmental Threat Assessment Center
dc.contributor.authorMCNULTY, Steve
hal.structure.identifierDepartment of Forestry and Environmental Resources
hal.structure.identifierDepartment of Ecosystem Science and Management
dc.contributor.authorNOORMETS, Asko
dc.date.accessioned2024-04-08T12:05:26Z
dc.date.available2024-04-08T12:05:26Z
dc.date.issued2019
dc.identifier.issn0829-318X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196357
dc.description.abstractEnDrought frequency and intensity are projected to increase throughout the southeastern USA, the natural range of loblolly pine (Pinus taeda L.), and are expected to have major ecological and economic implications. We analyzed the carbon and oxygen isotopic compositions in tree ring cellulose of loblolly pine in a factorial drought (~30% throughfall reduction) and fertilization experiment, supplemented with trunk sap flow, allometry and microclimate data. We then simulated leaf temperature and applied a multi-dimensional sensitivity analysis to interpret the changes in the oxygen isotope data. This analysis found that the observed changes in tree ring cellulose could only be accounted for by inferring a change in the isotopic composition of the source water, indicating that the drought treatment increased the uptake of stored moisture from earlier precipitation events. The drought treatment also increased intrinsic water-use efficiency, but had no effect on growth, indicating that photosynthesis remained relatively unaffected despite 19% decrease in canopy conductance. In contrast, fertilization increased growth, but had no effect on the isotopic composition of tree ring cellulose, indicating that the fertilizer gains in biomass were attributable to greater leaf area and not to changes in leaf-level gas exchange. The multi-dimensional sensitivity analysis explored model behavior under different scenarios, highlighting the importance of explicit consideration of leaf temperature in the oxygen isotope discrimination (Δ18Oc) simulation and is expected to expand the inference space of the Δ18Oc models for plant ecophysiological studies.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subjectα-cellulose
dc.subject.encarbon isotope discrimination
dc.subject.eniWUE
dc.subject.enΔ18Oc
dc.title.enUsing δ13C and δ18O to analyze loblolly pine (Pinus taeda L.) response to experimental drought and fertilization
dc.typeArticle de revue
dc.identifier.doi10.1093/treephys/tpz096
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalTree Physiology
bordeaux.page1984–1994
bordeaux.volume39
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue12
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02622674
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02622674v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Tree%20Physiology&rft.date=2019&rft.volume=39&rft.issue=12&rft.spage=1984%E2%80%931994&rft.epage=1984%E2%80%931994&rft.eissn=0829-318X&rft.issn=0829-318X&rft.au=LIN,%20Wen&DOMEC,%20Jean-Christophe&WARD,%20Eric%20J.&MARSHALL,%20John&KING,%20John%20S.&rft.genre=article


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