Black pine (Pinus nigra Arn.) growth divergence along a latitudinal gradient in Western Mediterranean mountains
Most studies of tree-growth and climate report positive responses to global warming in high latitudes and negative responses at lower ones. We analyzed tree-ring width of Pinus nigra Arn. along a 500 km latitudinal transect in the Iberian Peninsula to study the temporal trend and climate forcing in tree radial growth during the last century. Tree growth was enhanced by cool summers and moist cold seasons. Increased moisture stress has decreased tree growth rates. However, we present evidence of growth increases in some trees in all sampled populations after 1980's. Climate change negatively (positively) affected between 72% (5%) of trees in the southern populations and 40% (25%) in the north Trees with positive growth trends were favored by winter temperatures and their abundance was inversely correlated with forest productivity. Our findings add evidences of tree growth divergence in theMediterranean basin and show the gradual transition between forests where positive (temperate and boreal) and negative (Mediterranean) growth trends dominate. © INRA, EDP Sciences, 2010.
Main Authors: | Martín Benito, Darío, del Río, M., Cañellas, I. |
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Format: | artículo biblioteca |
Language: | English |
Published: |
BioMed Central
2010
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Subjects: | Growth trends, Climate change, Dendroecology, Pinus nigra, Drought stress, |
Online Access: | http://hdl.handle.net/20.500.12792/2686 http://hdl.handle.net/10261/291398 |
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