⌘K
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.A44 - Niveau 5 : Ormaies-chênaies pyrénéo-cantabriques
Description
Mixed forests of Ulmus glabra, Acer campestre, Acer opalus, Fraxinus excelsior, Fagus sylvatica, Quercus petraea, Quercus robur, Tilia cordata, Tilia platyphyllos, Sorbus aria, Sorbus mougeotii, Alnus glutinosa, Pinus sylvestris, Hedera helix, with an understorey comprising numerous shrubs, such as Corylus avellana and Crataegus monogyna, and a rich and luxuriant herb layer including numerous ferns, characteristic of the bottom colluvions of steep, shaded valleys, canyons and gorges of the collinar to montane levels of the Pyrenean and Cantabrian ranges.
Taxons (Liens actifs si espèces présentes)
Acer campestre L., 1753 ( Esp. caract. )
Acer opalus Mill., 1768 ( Esp. caract. )
Alnus glutinosa (L.) Gaertn., 1790 ( Esp. caract. )
Corylus avellana L., 1753 ( Esp. caract. )
Crataegus monogyna Jacq., 1775 ( Esp. caract. )
Fagus sylvatica L., 1753 ( Esp. caract. )
Fraxinus excelsior L., 1753 ( Esp. caract. )
Hedera helix L., 1753 ( Esp. caract. )
Pinus sylvestris L., 1753 ( Esp. caract. )
Quercus robur L., 1753 ( Esp. caract. )
Sorbus aria (L.) Crantz, 1763 ( Esp. caract. )
Sorbus mougeotii Soy.-Will. & Godr., 1858 ( Esp. caract. )
Tilia cordata Mill., 1768 ( Esp. caract. )
Tilia platyphyllos Scop., 1771 [nom. et typ. cons.] ( Esp. caract. )
Ulmus glabra Mill., 1768 ( Esp. caract. )
Acer opalus Mill., 1768 ( Esp. caract. )
Alnus glutinosa (L.) Gaertn., 1790 ( Esp. caract. )
Corylus avellana L., 1753 ( Esp. caract. )
Crataegus monogyna Jacq., 1775 ( Esp. caract. )
Fagus sylvatica L., 1753 ( Esp. caract. )
Fraxinus excelsior L., 1753 ( Esp. caract. )
Hedera helix L., 1753 ( Esp. caract. )
Pinus sylvestris L., 1753 ( Esp. caract. )
Quercus robur L., 1753 ( Esp. caract. )
Sorbus aria (L.) Crantz, 1763 ( Esp. caract. )
Sorbus mougeotii Soy.-Will. & Godr., 1858 ( 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