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Biotopes & milieux

Biotope - Typologie Européenne EUNIS

G1.A1 - Niveau 4 : Boisements sur sols eutrophes et mésotrophes à Quercus, Fraxinus et Carpinus betulus
Description
Atlantic, medio-European and eastern European forests dominated by Quercus robur or Quercus petraea, on eutrophic or mesotrophic soils, with usually ample and species-rich herb and shrub layers. Carpinus betulus is generally present. They occur under climates too dry or on soils too wet or too dry for beech or as a result of forestry practices favouring oaks.
Taxons (Liens actifs si espèces présentes)
Carpinus betulus L., 1753, Quercus robur L., 1753,
G1.A14 - Niveau 5 : Chênaies-charmaies subatlantiques à Stellaria
Description
Sub-Atlantic and medio-European forests of Quercus robur and Quercus petraea, with Carpinus betulus, developed on meso-oligotrophic soils, less hydromorphic than those occupied by the often sympatric forests of unit G1.A13, characterized by the replacement of the groups of Primula elatior and Lamium galeobdolon, well represented in the forests of unit G1.A13, by those of Deschampsia flexuosa and of Maianthemum bifolium, transgressives from the Quercion. They constitute the prevalent oak-hornbeam forests of the Münster basin, the Rhenish and Mosan regions, the northwestern Hercynian lands, Lorraine and the eastern Paris basin, Burgundy.
Taxons (Liens actifs si espèces présentes)
Carpinus betulus L., 1753 ( Esp. caract. )
Deschampsia flexuosa (L.) Trin., 1836 ( Esp. caract. )
Lamium galeobdolon (L.) L., 1759 ( Esp. caract. )
Maianthemum bifolium (L.) F.W.Schmidt, 1794 ( Esp. caract. )
Primula elatior (L.) Hill, 1765 ( Esp. caract. )
Quercus robur L., 1753 ( Esp. caract. )
Analyse Ecologie du milieu (En fonction des espèces présentes)
Faible
Forte — nb espèces indicatrices par classe
Humidité
Réaction du sol (pH)
Nutriments
Lumière
Matière organique
Granulométrie
Salinité