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Elevated CO2 does not increase eucalypt forest productivity on a low-phosphorus soil

hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorELLSWORTH, David s.
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorANDERSON, Ian c.
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorCROUS, Kristine y.
hal.structure.identifierSchool of Environment, Earth and Ecosystem Sciences [Milton Keynes]
dc.contributor.authorCOOKE, Julia
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorDRAKE, John e.
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorGHERLENDA, Andrew n.
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorGIMENO, Teresa E.
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorMACDONALD, Catriona a.
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorMEDLYN, Belinda e.
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorPOWELL, Jeff r.
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
dc.contributor.authorTJOELKER, Mark g.
hal.structure.identifierHawkesbury Institute for the Environment [Richmond] [HIE]
hal.structure.identifierDepartment of Forest Resources
dc.contributor.authorREICH, Peter b.
dc.date.accessioned2024-04-08T12:09:19Z
dc.date.available2024-04-08T12:09:19Z
dc.date.issued2017
dc.identifier.issn1758-678X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196569
dc.description.abstractEnRising atmospheric CO2 stimulates photosynthesis and productivity of forests, offsetting CO2 emissions1, 2. Elevated CO2 experiments in temperate planted forests yielded ~23% increases in productivity3 over the initial years. Whether similar CO2 stimulation occurs in mature evergreen broadleaved forests on low-phosphorus (P) soils is unknown, largely due to lack of experimental evidence4. This knowledge gap creates major uncertainties in future climate projections5, 6 as a large part of the tropics is P-limited. Here, we increased atmospheric CO2 concentration in a mature broadleaved evergreen eucalypt forest for three years, in the first large-scale experiment on a P-limited site. We show that tree growth and other aboveground productivity components did not significantly increase in response to elevated CO2 in three years, despite a sustained 19% increase in leaf photosynthesis. Moreover, tree growth in ambient CO2 was strongly P-limited and increased by ~35% with added phosphorus. The findings suggest that P availability may potentially constrain CO2-enhanced productivity in P-limited forests; hence, future atmospheric CO2 trajectories may be higher than predicted by some models. As a result, coupled climate–carbon models should incorporate both nitrogen and phosphorus limitations to vegetation productivity7 in estimating future carbon sinks.
dc.language.isoen
dc.publisherNature Publishing Group
dc.subjectproductivité forestière
dc.subjectphotosynthèse foliaire
dc.subjectcarbone atmosphérique
dc.title.enElevated CO2 does not increase eucalypt forest productivity on a low-phosphorus soil
dc.typeArticle de revue
dc.identifier.doi10.1038/nclimate3235
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalNature Climate Change
bordeaux.page279-282
bordeaux.volume7
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue4
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-01608517
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01608517v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nature%20Climate%20Change&rft.date=2017&rft.volume=7&rft.issue=4&rft.spage=279-282&rft.epage=279-282&rft.eissn=1758-678X&rft.issn=1758-678X&rft.au=ELLSWORTH,%20David%C2%A0s.&ANDERSON,%20Ian%C2%A0c.&CROUS,%20Kristine%C2%A0y.&COOKE,%20Julia&DRAKE,%20John%C2%A0e.&rft.genre=article


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