Differences in stem radial variation between Pinus pinaster Ait. and Quercus pyrenaica Willd. may release inter-specific competition

Species complementarity by morphological and physiological trait differences could cause distinct temporal spatial use of resources. Accordingly, mixed stands may enhance production, biodiversity and/or provide a better adaptation to future climate conditions. We aim identify species in intra-annual stem radial variation patterns, recognize species-specific responses contrasting weather conditions at key growth phases. Stem was recorded from high resolution point dendrometers (2012–2014) installed on twelve dominant maritime pine Pyrenean oak trees two central Spain. were analyzed synchrony statistics, pattern modelling, evaluating the dependence main phases Both showed important increment despite general synchrony. Radial onset earlier for during spring rainy autumns. Species-specific indicate that increased with autumn temperature pine, but decreased trees. However, summer vapor pressure deficit reduce pine. Therefore, would adapt more efficiently warmer temperatures associated change, although water stress this competitive bonus.