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Forestry 2007 80(3):223-239; doi:10.1093/forestry/cpm019
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© Institute of Chartered Foresters, 2007. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

A comparison of the autecology of Quercus robur L. and Q. pyrenaica Wild.: present habitat in Galicia, NW Spain

IJ Díaz-Maroto1,*, P Vila-Lameiro1, E Guchu2 and MC Díaz-Maroto2

1 Departamento de Ingeniería Agroforestal, Universidad de Santiago de Compostela, Campus Universitario s/n, E-27002 Lugo, Spain
2 Área de Tecnología de los Alimentos, Facultad de Ciencias Químicas, Campus Universitario 10, Universidad de Castilla-La Mancha, E-13071 Ciudad Real, Spain

* Corresponding author. E-mail: diazmaro{at}lugo.usc.es


  Abstract

The biotopes occupied by pedunculate oak (Quercus robur L.) and rebollo oak (Quercus pyrenaica Willd.) in Galicia were characterized using different parameters, enabling a comparative analysis of its habitats. Thirty-nine plots of pedunculate oak and 40 of rebollo oak were inventoried and 25 ecological parameters (physiographic, climatic and edaphic) were measured to describe the biotopes, along with 14 stand parameters to characterize the structure and the silviculture of these forests; some of them were used in previous works about the autecology of both species. Quercus robur was found to occupy a wider range of ecological habitats and their distribution is oceanic; Q. pyrenaica presents a more Mediterranean phytoclimatic position. The results indicated that the distribution of oak forests in Galicia is more closely related to physiographic and climatic features than to edaphic, because the nature of the substrates that they occupy is similar. Analysis of fragility/aggressiveness between both species and chestnut shows that the aggressiveness of both oaks, mainly pedunculate, was much higher, except at high altitudes, and in areas with a high mean temperature, where rebollo is more aggressiveness. Comparison of the two Quercus shows for most of the parameters that Q. robur is the more aggressive species.

Received 28 November 2006.
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