Biotope - Typologie Européenne EUNIS

E4.11 - Niveau 4 : Pelouses et habitats herbacés boréo-alpins acidoclines des combes à neige
Description
Snow patches of the Alps, the Pyrenees, the Carpathians (e.g. alliances Salicion herbaceae and Festucion picturatae), the Dinarides, the Rhodope Mountains (Rila) and the Pelagonides, occupying areas free from snow for less than two months, with the herbs e.g. Luzula alpinopilosa, Salix herbacea, Ligusticum mutellina; mosses Polytrichum sexangulare, Polytrichum juniperinum, Pohlia commutata, Kiaeria falcata (Dicranum falcatum), the liverwort Anthelia juratzkana or sometimes lichens. Also snow-patch communities of arctic and boreal mountains of Fennoscandia, the Scottish Highlands, Iceland, Greenland and other islands of the Norwegian and Greenland seas, formed of mats of mosses and lichens.
Taxons (Liens actifs si espèces présentes)
Anthelia juratzkana (Limpr.) Trevis., 1877, Kiaeria falcata (Hedw.) I.Hagen, 1915, Ligusticum mutellina (L.) Crantz, 1767, Luzula alpinopilosa (Chaix) Breistr., 1947, Polytrichum juniperinum Hedw., 1801, Polytrichum sexangulare Hedw., Salix herbacea L., 1753,
E4.113 - Niveau 5 : Communautés des combes à neige à Luzula spadicea
Description
Luzula alpinopilosa ssp. obscura (Luzula spadicea)-dominated snow patch communities of moderate slopes of the Alps and the Carpathians submitted to prolonged snow cover, ecological variant of the Luzula spadicea scree communities of H2.313, more prevalent in the central and eastern Alps, the Tatras and the eastern Carpathians, characterized by an important representation of species of the Salicetea herbaceae, among which Poa granitica, Ranunculus montanus, Oligotrichum hercynicum.
Taxons (Liens actifs si espèces présentes)
Analyse Ecologie du milieu (En fonction des espèces présentes)