TY - JOUR T1 - Hybrid zones between two European oaks: a plant community approach JF - Plant Ecology Y1 - 2006 A1 - de Dios, R.S. A1 - Benito-Garz A1 - Sainz-Ollero, H. SP - 109 EP - 125 KW - Canonical Correspondence Analysis KW - CCA KW - Iberian Peninsula KW - Quercus faginea KW - Quercus pubescens AB - Phenomena of hybridization can affect the ecology and evolution of the species involved in the process, as well as their communities. Although numerous papers focus upon the problem of taxonomy, few of these have attempted to study hybrid zones in relation to the analysis of their communities. On the Iberian Peninsula, hybridization phenomena among different oak species are frequent. It is, however, between Quercus faginea Lam. and Quercus pubescens Willd. where the most noteworthy hybridization phenomenon occurs. In this respect, we are familiar with the existence of different introgression levels but we are unaware of whether these hybrids are the transitory result of the interspecific genetic flow or whether these are maintained by means of extrinsic selection processes.Study of plant communities VL - 187 ER -