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dc.contributor.authorBrienen, R. J. W.-
dc.contributor.authorGloor, E.-
dc.contributor.authorClerici, S.-
dc.contributor.authorNewton, R.-
dc.contributor.authorArppe, L.-
dc.contributor.authorBoom, Arnoud-
dc.contributor.authorBottrell, S.-
dc.contributor.authorCallaghan, M.-
dc.contributor.authorHeaton, T.-
dc.contributor.authorHelama, S.-
dc.contributor.authorHelle, G.-
dc.contributor.authorLeng, M. J.-
dc.contributor.authorMielikäinen, K.-
dc.contributor.authorOinonen, M.-
dc.contributor.authorTimonen, M.-
dc.identifier.citationNature Communications, 2017, 8, Article number: 288en
dc.description.abstractVarious studies report substantial increases in intrinsic water-use efficiency (W i ), estimated using carbon isotopes in tree rings, suggesting trees are gaining increasingly more carbon per unit water lost due to increases in atmospheric CO2. Usually, reconstructions do not, however, correct for the effect of intrinsic developmental changes in W i as trees grow larger. Here we show, by comparing W i across varying tree sizes at one CO2 level, that ignoring such developmental effects can severely affect inferences of trees’ W i . W i doubled or even tripled over a trees’ lifespan in three broadleaf species due to changes in tree height and light availability alone, and there are also weak trends for Pine trees. Developmental trends in broadleaf species are as large as the trends previously assigned to CO2 and climate. Credible future tree ring isotope studies require explicit accounting for species-specific developmental effects before CO2 and climate effects are inferred.en
dc.publisherNature Publishing Groupen
dc.rightsCopyright © the authors, 2017. This is an open-access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en
dc.titleTree height strongly affects estimates of water-use efficiency responses to climate and CO2 using isotopesen
dc.typeJournal Articleen
dc.description.versionPublisher Versionen
dc.type.subtypeJournal Article-
pubs.organisational-group/Organisation/COLLEGE OF SCIENCE AND ENGINEERINGen
pubs.organisational-group/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Geographyen
pubs.organisational-group/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Geography/Physical Geographyen
Appears in Collections:Published Articles, Dept. of Geography

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