Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/44358
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dc.contributor.authorZalloni, Enrica-
dc.contributor.authorde Luis, Martin-
dc.contributor.authorCampelo, Filipe-
dc.contributor.authorNovak, Klemen-
dc.contributor.authorDe Micco, Veronica-
dc.contributor.authorDi Filippo, Alfredo-
dc.contributor.authorVieira, Joana-
dc.contributor.authorNabais, Cristina-
dc.contributor.authorRozas, Vicente-
dc.contributor.authorBattipaglia, Giovanna-
dc.date.accessioned2017-11-13T18:06:02Z-
dc.date.available2017-11-13T18:06:02Z-
dc.date.issued2016-
dc.identifier10.3389/fpls.2016.00579-
dc.identifier.urihttp://hdl.handle.net/10316/44358-
dc.description.abstractTree rings provide information about the climatic conditions during the growing season by recording them in different anatomical features, such as intra-annual density fluctuations (IADFs). IADFs are intra-annual changes of wood density appearing as latewood-like cells within earlywood, or earlywood-like cells within latewood. The occurrence of IADFs is dependent on the age and size of the tree, and it is triggered by climatic drivers. The variations of IADF frequency of different species and their dependence on climate across a wide geographical range have still to be explored. The objective of this study is to investigate the effect of age, tree-ring width and climate on IADF formation and frequency at a regional scale across the Mediterranean Basin in Pinus halepensis Mill., Pinus pinaster Ait., and Pinus pinea L. The analyzed tree-ring network was composed of P. pinea trees growing at 10 sites (2 in Italy, 4 in Spain, and 4 in Portugal), P. pinaster from 19 sites (2 in Italy, 13 in Spain, and 4 in Portugal), and P. halepensis from 38 sites in Spain. The correlations between IADF frequency and monthly minimum, mean and maximum temperatures, as well as between IADF frequency and total precipitation, were analyzed. A significant negative relationship between IADF frequency and tree-ring age was found for the three Mediterranean pines. Moreover, IADFs were more frequent in wider rings than in narrower ones, although the widest rings showed a reduced IADF frequency. Wet conditions during late summer/early autumn triggered the formation of IADFs in the three species. Our results suggest the existence of a common climatic driver for the formation of IADFs in Mediterranean pines, highlighting the potential use of IADF frequency as a proxy for climate reconstructions with geographical resolution.por
dc.language.isoengpor
dc.relationFPS COST Action FP 1106por
dc.rightsopenAccesspor
dc.titleClimatic Signals from Intra-annual Density Fluctuation Frequency in Mediterranean Pines at a Regional Scalepor
dc.typearticle-
degois.publication.firstPage579por
degois.publication.titleFrontiers in Plant Sciencepor
dc.relation.publisherversionhttp://journal.frontiersin.org/article/10.3389/fpls.2016.00579/fullpor
dc.identifier.doi10.3389/fpls.2016.00579por
degois.publication.volume7por
item.grantfulltextopen-
item.languageiso639-1en-
item.fulltextCom Texto completo-
crisitem.author.deptCentre for Functional Ecology-
crisitem.author.deptFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.parentdeptUniversidade de Coimbra-
crisitem.author.researchunitCentre for Functional Ecology-
crisitem.author.orcid0000-0001-6901-8776-
Appears in Collections:I&D CFE - Artigos em Revistas Internacionais
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