1.Forest Resources Unit,Centro de Investigación y Tecnología Agroalimentaria, Gobierno de Aragón,Zaragoza,Spain;2.Department of Botany,University of Innsbruck,Innsbruck,Austria;3.INRA, UMR PIAF,Clermont-Ferrand,France
Abstract:
Introduction
Scots pine populations in the SE “Sistema Ibérico” range suffered a severe defoliation in the S face of the crown in isolated trees of thinned stands. This process was detected at the end of the winter 2001–2002.