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Biotope - Typologie Européenne EUNIS
G1.A41 - Niveau 5 : Forêts de ravin médio-européennes
Description
Atlantic and medio-European collinar and submontane forests of Fraxinus excelsior, Acer pseudoplatanus, Acer platanoides, Ulmus glabra, Tilia platyphyllos, Fagus sylvatica, Quercus robur, on unstable scree or colluvions of abrupt, shady and humid slopes, with abundant ferns, characterized by the presence of the ecological group of Asplenium scolopendrium, Mercurialis perennis. They are characteristic of the hills, mountains and plateaux associated with the Hercynian ranges, the Jura, the Northern Carpathians, the Alps, the hills of the Pannonic plain, within the range of the Fagion medio-europaeum. Sub-Atlantic forests of calcareous hills of the Paris Basin, of Burgundy, of the Plateau de Langres, somewhat intermediate between these formations and those of unit G1.A45 are included, in view of their restriction to situations of cool microclimates without marked summer drought, in particular, north-facing slopes and the lack of thermophilous species characteristic of the Tilenion platiphylli.
Taxons (Liens actifs si espèces présentes)
G1.A412 - Niveau 6 : Forêts de ravin acidophiles à Frêne, Érable sycomore et Tilleul
Description
Ravine forests on siliceous screes and colluvions of the great western Hercynian ranges, the Ardenne-Eifel system, the mid-German Hercynian ranges, the Harz, the southwestern Bohemian Quadrangle, dominated by Tilia platyphyllos, Tilia cordata, Acer pseudoplatanus, Acer platanoides, Quercus petraea, Carpinus betulus, Ulmus glabra, with an impoverished cortège that includes, with ravine forest species, acidophilous Fagetalia species, including Luzula luzuloides, Vaccinium myrtillus, Deschampsia flexuosa, and an abundance of acidophile ferns and mosses.
Taxons (Liens actifs si espèces présentes)
Acer platanoides L., 1753 ( Esp. caract. )
Acer pseudoplatanus L., 1753 ( Esp. caract. )
Carpinus betulus L., 1753 ( Esp. caract. )
Deschampsia flexuosa (L.) Trin., 1836 ( Esp. caract. )
Luzula luzuloides (Lam.) Dandy & Wilmott, 1938 ( Esp. caract. )
Tilia cordata Mill., 1768 ( Esp. caract. )
Tilia platyphyllos Scop., 1771 [nom. et typ. cons.] ( Esp. caract. )
Ulmus glabra Mill., 1768 ( Esp. caract. )
Vaccinium myrtillus L., 1753 ( Esp. caract. )
Acer pseudoplatanus L., 1753 ( Esp. caract. )
Carpinus betulus L., 1753 ( Esp. caract. )
Deschampsia flexuosa (L.) Trin., 1836 ( Esp. caract. )
Luzula luzuloides (Lam.) Dandy & Wilmott, 1938 ( Esp. caract. )
Tilia cordata Mill., 1768 ( Esp. caract. )
Tilia platyphyllos Scop., 1771 [nom. et typ. cons.] ( Esp. caract. )
Ulmus glabra Mill., 1768 ( Esp. caract. )
Vaccinium myrtillus 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