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dc.contributor.author
Lavergne, Aliénor
dc.contributor.author
Gennaretti, Fabio
dc.contributor.author
Risi, Camille
dc.contributor.author
Daux, Valérie
dc.contributor.author
Boucher, Etienne
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Savard, Martine M.
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Naulier, Maud
dc.contributor.author
Villalba, Ricardo
dc.contributor.author
Bégin, Christian
dc.contributor.author
Guiot, Joël
dc.date.available
2018-08-28T22:08:34Z
dc.date.issued
2017-11
dc.identifier.citation
Lavergne, Aliénor; Gennaretti, Fabio; Risi, Camille; Daux, Valérie; Boucher, Etienne; et al.; Modelling tree ring cellulose δ18O variations in two temperature-sensitive tree species from North and South America; European Geophysical Union; Climate of the Past; 13; 11; 11-2017; 1515-1526
dc.identifier.issn
1814-9324
dc.identifier.uri
http://hdl.handle.net/11336/57463
dc.description.abstract
Oxygen isotopes in tree rings (δ18OTR) are widely used to reconstruct past climates. However, the complexity of climatic and biological processes controlling isotopic fractionation is not yet fully understood. Here, we use the MAIDENiso model to decipher the variability in δ18OTR of two temperature-sensitive species of relevant palaeoclimatological interest (Picea mariana and Nothofagus pumilio) and growing at cold high latitudes in North and South America. In this first modelling study on δ18OTR values in both northeastern Canada (53.86° N) and western Argentina (41.10° S), we specifically aim at (1) evaluating the predictive skill of MAIDENiso to simulate δ18OTR values, (2) identifying the physical processes controlling δ18OTR by mechanistic modelling and (3) defining the origin of the temperature signal recorded in the two species. Although the linear regression models used here to predict daily δ18O of precipitation (δ18OP) may need to be improved in the future, the resulting daily δ18OP values adequately reproduce observed (from weather stations) and simulated (by global circulation model) δ18OP series. The δ18OTR values of the two species are correctly simulated using the δ18OP estimation as MAIDENiso input, although some offset in mean δ18OTR levels is observed for the South American site. For both species, the variability in δ18OTR series is primarily linked to the effect of temperature on isotopic enrichment of the leaf water. We show that MAIDENiso is a powerful tool for investigating isotopic fractionation processes but that the lack of a denser isotope-enabled monitoring network recording oxygen fractionation in the soil-vegetation-atmosphere compartments limits our capacity to decipher the processes at play. This study proves that the eco-physiological modelling of δ18OTR values is necessary to interpret the recorded climate signal more reliably.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
European Geophysical Union
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Oxygen Isotopes in Tree Rings
dc.subject
Biological Processes Controlling Isotopic Fractionation
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Nothofagus Pumilio
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Maideniso
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Modelling tree ring cellulose δ18O variations in two temperature-sensitive tree species from North and South America
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-21T19:12:15Z
dc.identifier.eissn
1814-9332
dc.journal.volume
13
dc.journal.number
11
dc.journal.pagination
1515-1526
dc.journal.pais
Alemania
dc.journal.ciudad
Gottingen
dc.description.fil
Fil: Lavergne, Aliénor. Aix Marseille Université; Francia
dc.description.fil
Fil: Gennaretti, Fabio. Aix Marseille Université; Francia
dc.description.fil
Fil: Risi, Camille. Laboratoirede Météorologie Dynamique; Francia
dc.description.fil
Fil: Daux, Valérie. Laboratoire Des Sciences Du Climat Et de Lenvironnemet; Francia
dc.description.fil
Fil: Boucher, Etienne. Université du Québec à Montréal; Canadá
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Fil: Savard, Martine M.. Natural Resources Canada. Geological Survey of Canada; Canadá
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Fil: Naulier, Maud. Institut de Radioprotection et de Sureté Nucléaire; Canadá
dc.description.fil
Fil: Villalba, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Bégin, Christian. Natural Resources Canada. Geological Survey of Canada; Canadá
dc.description.fil
Fil: Guiot, Joël. Aix Marseille Université; Francia
dc.journal.title
Climate of the Past
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.clim-past.net/13/1515/2017/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.5194/cp-13-1515-2017
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