Influence of climate on radial growth of holm oaks (Quercus ilex subsp ballota desf) from SW Spain



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Patón, Daniel and García Herrera, Ricardo and Guenca, Javier and Galavis, Mamen and Roig, Fidel A. (2009) Influence of climate on radial growth of holm oaks (Quercus ilex subsp ballota desf) from SW Spain. Geochronometria, 34 . pp. 49-56. ISSN 1733-8387

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A total of 47 trunk sections from Holm Oak (Quercus ilex subsp. ballota Desf) trees growing at two different sites at the Extremadura region (SW Spain) were considered in the computation of a regional tree-ring chronology useful to interpret the tree-ring/Mediterranean climate relationships. This is the first dendroclimatological research of Holm Oaks conducted to reveal its potential use as a climatic proxy. The obtained tree-ring chronologies were compared with climatic parameters based on monthly, seasonal and annual rainfall, and monthly maximum, minimum and average temperature. The best correlations were obtained with maximum temperatures during the period between previous winter and early spring. Influence of rainfall was less relevant. Growth of this species indicates a typical bimodal (spring and autumn) strategy that avoids low winter temperatures and summer drought. Despite some technical difficulties recognizing tree rings in Holm Oaks, its good sensitivity to climate variability and its wide distribution and longevity (~800 years), allow us to consider this species as a good candidate for temperature reconstructions in the Mediterranean Basin.

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© 2009 GADAM Centre, Institute of Physics, Silesian University of Technology. All rights reserved. We wish show our gratitude to the persons that help in the acquisition of trunk sections of Holm Oaks in special to Maderas Bautista from Alcántara area. Special mention must be for D. Justo Hernández Morgado from Roca de la Sierra (Badajoz) who gave the total set of trunks used from this area. Thanks to Troy Nahumko and Adrian Birtwistle for their support on the English version. We also thank two anonymous referees that help during the initial version of the manuscript. R. García Herrera is partially supported by the EU CIRCE project (EU IP 036961). D. Patón was supported by a "Salvador de Madariaga" grant of the Spanish Minister of Science and Technology. The Spanish National Institute of Meteorology kindly provided the meteorological data.

Uncontrolled Keywords:Cork-ring width; Severe drought; Phillyrea-latifolia; Diameter growth; NE Spain; l.; Precipitation; Forests; Dehesas; Water
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:34500
Deposited On:27 Nov 2015 15:02
Last Modified:05 Apr 2022 07:57

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