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Mining ecophysiological responses of European beech ecosystems to drought

hal.structure.identifierUniversité du Québec en Abitibi-Témiscamingue [UQAT]
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorGENNARETTI, Fabio
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorOGEE, Jerome
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorSAINTE-MARIE, Julien
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorCUNTZ, Matthias
dc.date.accessioned2024-04-08T11:49:37Z
dc.date.available2024-04-08T11:49:37Z
dc.date.issued2020-01
dc.identifier.issn0168-1923
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195347
dc.description.abstractEnThe most accurate understanding of forest functioning during drought is crucial to improve the forecast of future forest productivity. Here we investigate the ecophysiological responses (i.e. primary production, evapotranspiration and water use efficiency) of European beech to drought events with the ecosystem model MuSICA, using as benchmark the observed fluxes at the experimental forest Hesse (France). We show that MuSICA is able to realistically simulate observed drought-induced limitations. Subsequently we use simulation experiments to provide: (1) a quantification of the reduction of ecosystem fluxes during the 2003 drought, (2) a partitioning of heat stress and water limitations during droughts, (3) an analysis of the impact of specific drought trajectories, and (4) an evaluation of the potential impact of projected climate change on the studied forest and (5) over the beech distributional range. Our results show that the 2003 drought resulted in a 17% reduction of annual gross primary production and in a 21% reduction of evapotranspiration at Hesse. The studied forest ecosystem is mostly sensitive to negative precipitation anomalies (82% of the reduced forest productivity in 2003) and almost insensitive to heat stress due to high temperatures (16%). Moreover, we show that the ecosystem fluxes are limited more by fast drought onsets in the early growing season (June-July) than by onsets later in the season. Deciphering the impact of future climate change on beech productivity is complicated by large uncertainties in projected future precipitation and in the severity of extreme dry years. Drastic reduction of ecosystem fluxes is only predicted with climate projections that show marked reductions in precipitation. However, increased CO2 fertilization in the future will counterbalance negative drought impacts. This modelling-based study improves our understanding of the functioning of an emblematic European tree species during extreme events and informs on potential future forest responses to projected climate change.
dc.description.sponsorshipForest density reduction to minimize the vulnerability of Norway spruce and silver fir to extreme drought – a risk assessment - ANR-16-SUMF-0001
dc.description.sponsorshipRecherches Avancées sur l'Arbre et les Ecosytèmes Forestiers - ANR-11-LABX-0002
dc.description.sponsorshipCOntinental To coastal Ecosystems: evolution, adaptability and governance - ANR-10-LABX-0045
dc.language.isoen
dc.publisherElsevier Masson
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.subject.enDrought
dc.subject.enCarbon flux
dc.subject.enFagus sylvatica L.
dc.subject.enEcosystem model
dc.subject.enMuSICA
dc.subject.enProjected climate change
dc.title.enMining ecophysiological responses of European beech ecosystems to drought
dc.typeArticle de revue
dc.identifier.doi10.1016/j.agrformet.2019.107780
dc.subject.halSciences du Vivant [q-bio]/Ecologie, Environnement
bordeaux.journalAgricultural and Forest Meteorology
bordeaux.page1-9
bordeaux.volume280
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02557077
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02557077v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Agricultural%20and%20Forest%20Meteorology&rft.date=2020-01&rft.volume=280&rft.spage=1-9&rft.epage=1-9&rft.eissn=0168-1923&rft.issn=0168-1923&rft.au=GENNARETTI,%20Fabio&OGEE,%20Jerome&SAINTE-MARIE,%20Julien&CUNTZ,%20Matthias&rft.genre=article


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