Age, climate and intra-annual density fluctuations in Pinus halepensis in Spain

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Title: Age, climate and intra-annual density fluctuations in Pinus halepensis in Spain
Authors: Novak, Klemen | Saz Sánchez, Miguel Ángel | Čufar, Katarina | Raventós, José | Luis, Martin de
Research Group/s: Gestión de Ecosistemas y de la Biodiversidad (GEB)
Center, Department or Service: Universidad de Alicante. Departamento de Ecología
Keywords: Aleppo pine | Wood structure | Tree rings | Mediterranean
Knowledge Area: Ecología
Issue Date: 2013
Publisher: Koninklijke Brill NV
Citation: IAWA Journal. 2013, 34(4): 459-474. doi:10.1163/22941932-00000037
Abstract: Intra-annual density fluctuations (IADFs) in tree rings of Aleppo pine (Pinus halepensis) are considered to be among the most promising wood anatomical features in dendrochronological studies. They provide environmental information in addition to those obtained from tree-ring widths. We used a network of 35 sites in Spain, ranging from nearly desert to temperate climate. We analysed tree-ring series of 529 trees to study IADF frequencies, and their dependence on climatic factors and cambial age. The results showed that IADF frequency is age dependent, with its maximum at the cambial age of 27 years (evaluated at breast height). The frequencies varied across the network and at different sites we recorded that 0.3% to 33% of the analysed tree rings contained IADFs. They were more frequent where and when the temperatures were higher, summer drought was intense and autumn was the main precipitation season. IADF formation was particularly related to high minimum temperatures and wet conditions in late summer and autumn. These results suggest that IADF formation is not related to stressful conditions during summer but to favourable conditions during autumn. These conditions promote cambial reactivation and consequently formation of wider tree rings.
Sponsor: This work was supported by the Spanish Ministry of Science and Innovation (MICINN), the ELENA program (CGL2012-31668) and by the FEDER program of the European Union. The cooperation among international partners was supported by the COST Action FP1106, STReESS.
ISSN: 0928-1541 (Print) | 2294-1932 (Online)
DOI: 10.1163/22941932-00000037
Language: eng
Type: info:eu-repo/semantics/article
Rights: © International Association of Wood Anatomists, 2013
Peer Review: si
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Appears in Collections:INV - GEB - Artículos de Revistas

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