G1.911Niveau 5Boulaies atlantiques planitiaires et collinéennes
↑ Niveau supérieur
Description
Pioneer and subclimax Betula pendula or Betula pubescens formations of the North Sea-Baltic plains, the lower Hercynian slopes, the periphery of the Paris Basin, southwestern France, northwestern Iberia, Insubria and Illyria, within the range of Atlantic and sub-Atlantic acidophilous oak woods.
Formations usually formed by Betula pubescens, with Molinia caerulea and sometimes Deschampsia flexuosa, developed on podsolised or hydromorphic soils, as substitution facies of oak and birch woods, or colonization stages, in particular, of Molinion grasslands or humid heaths.