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Biotope - Typologie Européenne EUNIS
G1.A4 - Niveau 4 : Forêts de ravin et de pente
Description
Cool, moist forests with a multispecific tree layer (especially maples Acer spp., lime Tilia spp., ash Fraxinus spp. ) of variable dominance, most often on more or less abrupt slopes. They are of considerable biohistorical and biogeographical importance, as examples of the mixed forests of the Atlantic period, preserved in stations inaccessible to beech domination. Vegetation of alliance Tilio-Acerion.
Taxons (Liens actifs si espèces présentes)
G1.A45 - Niveau 5 : Forêts thermophiles mixtes alpines et périalpines à Tilia
Description
Thermophilous forests of Tilia cordata, Tilia platyphyllos, Acer platanoides, Fraxinus excelsior, Ulmus glabra, Fagus sylvatica with Euonymus latifolius, Corylus avellana, most typical of the warm valleys of the Alpine system and some peripheral ranges, characterized by Asperula taurina, Cyclamen purpurascens and numerous transgressives of the Quercetalia pubescenti-petraeae. These remarkable relict forests are particularly characteristic of the föhn valleys of the Insubrian and northern Alps; they occur in similar situations in the Jura and the Hercynian ranges, north to the Harz.
Taxons (Liens actifs si espèces présentes)
Acer platanoides L., 1753 ( Esp. caract. )
Asperula taurina L., 1753 ( Esp. caract. )
Corylus avellana L., 1753 ( Esp. caract. )
Cyclamen purpurascens Mill., 1768 ( Esp. caract. )
Euonymus latifolius (L.) Mill., 1768 ( Esp. caract. )
Fagus sylvatica L., 1753 ( Esp. caract. )
Fraxinus excelsior L., 1753 ( Esp. caract. )
Tilia cordata Mill., 1768 ( Esp. caract. )
Tilia platyphyllos Scop., 1771 [nom. et typ. cons.] ( Esp. caract. )
Ulmus glabra Mill., 1768 ( Esp. caract. )
Asperula taurina L., 1753 ( Esp. caract. )
Corylus avellana L., 1753 ( Esp. caract. )
Cyclamen purpurascens Mill., 1768 ( Esp. caract. )
Euonymus latifolius (L.) Mill., 1768 ( Esp. caract. )
Fagus sylvatica L., 1753 ( Esp. caract. )
Fraxinus excelsior L., 1753 ( Esp. caract. )
Tilia cordata Mill., 1768 ( Esp. caract. )
Tilia platyphyllos Scop., 1771 [nom. et typ. cons.] ( Esp. caract. )
Ulmus glabra Mill., 1768 ( 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