Biotope - Typologie Européenne EUNIS

F2.3 - Niveau 3 : Fourrés subalpins caducifoliés
Description
Subalpine scrubs of Alnus, Betula, Salix and Rosaceae (Amelanchier, Potentilla, Rubus, Sorbus), less than 5 m tall, often accompanied by tall herbs that in the absence of scrub would be classified as E5.5. Excludes dwarf Salix scrub (F2.1), which is composed of species that rarely exceed 1.5 m in height, and scrub on waterlogged soils (F9.2).
Taxons (Liens actifs si espèces présentes)
Cirratulidae sp., Nemertea sp., Pectinariidae sp., Polychaeta sp., Polysiphonia sp., Tharyx sp., Ulva sp.,
F2.33 - Niveau 4 : Fourrés subalpins mixtes
Description
Communities of the subalpine zone, of the tree-limit, and sometimes of the montane zone, of higher nemoral mountains of the western Alpine system and its associated ranges (Carpathians) mainly of alliances Calamagrostion villosae and Trisetion fusci dominated by tall or medium shrubs, for the most part Rosaceae species (of genera Rubus, Sorbus, Amelanchier, Potentilla), Betula or tall Vaccinium, Salix helvetica, Salix kitaibeliana and grasses Calamagrostis villosa and Deschampsia cespitosa often accompanied by tall herbs characteristic of the subalpine tall herb communities (unit E5.5), or by subalpine heaths, such as the Juniperus nana-Arctostaphylos uva-ursi heaths.
Taxons (Liens actifs si espèces présentes)
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