Plasticity in dendroclimatic response across the distribution range of Aleppo pine (Pinus halepensis)

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Title: Plasticity in dendroclimatic response across the distribution range of Aleppo pine (Pinus halepensis)
Authors: Luis, Martin de | Čufar, Katarina | Di Filippo, Alfredo | Novak, Klemen | Papadopoulos, Andreas | Piovesan, Gianluca | Rathgeber, Cyrille B.K. | Raventós, José | Saz, Miguel Ángel | Smith, Kevin T.
Research Group/s: Gestión de Ecosistemas y de la Biodiversidad (GEB)
Center, Department or Service: Universidad de Alicante. Departamento de Ecología
Keywords: Plasticity | Dendroclimatic response | Distribution range | Aleppo pine
Knowledge Area: Ecología
Issue Date: 31-Dec-2013
Publisher: Public Library of Science (PLoS)
Citation: de Luis M, Čufar K, Di Filippo A, Novak K, Papadopoulos A, et al. (2013) Plasticity in Dendroclimatic Response across the Distribution Range of Aleppo Pine (Pinus halepensis). PLoS ONE 8(12): e83550. doi:10.1371/journal.pone.0083550
Abstract: We investigated the variability of the climate-growth relationship of Aleppo pine across its distribution range in the Mediterranean Basin. We constructed a network of tree-ring index chronologies from 63 sites across the region. Correlation function analysis identified the relationships of tree-ring index to climate factors for each site. We also estimated the dominant climatic gradients of the region using principal component analysis of monthly, seasonal, and annual mean temperature and total precipitation from 1,068 climatic gridpoints. Variation in ring width index was primarily related to precipitation and secondarily to temperature. However, we found that the dendroclimatic relationship depended on the position of the site along the climatic gradient. In the southern part of the distribution range, where temperature was generally higher and precipitation lower than the regional average, reduced growth was also associated with warm and dry conditions. In the northern part, where the average temperature was lower and the precipitation more abundant than the regional average, reduced growth was associated with cool conditions. Thus, our study highlights the substantial plasticity of Aleppo pine in response to different climatic conditions. These results do not resolve the source of response variability as being due to either genetic variation in provenance, to phenotypic plasticity, or a combination of factors. However, as current growth responses to inter-annual climate variability vary spatially across existing climate gradients, future climate-growth relationships will also likely be determined by differential adaptation and/or acclimation responses to spatial climatic variation. The contribution of local adaptation and/or phenotypic plasticity across populations to the persistence of species under global warming could be decisive for prediction of climate change impacts across populations. In this sense, a more complex forest dynamics modeling approach that includes the contribution of genetic variation and phenotypic plasticity can improve the reliability of the ecological inferences derived from the climate-growth relationships.
Sponsor: This work was partially supported by Spanish Ministry of Education and Science co-funded by FEDER program (CGL2012-31668), the European Union and the National Ministry of Education and Religion of Greece (EPEAEK- Environment – Archimedes), the Slovenian Research Agency (program P4-0015), and the USDA Forest Service. The cooperation among international partners was supported by the COST Action FP1106, STREeSS.
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0083550
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2013 de Luis et al. 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.
Peer Review: si
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