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Biotope - Typologie Européenne EUNIS
E4.1 - Niveau 3 : Combes à neige avec végétation
Description
Vegetated areas that retain late-lying snow. Dominants may be mosses, liverworts, macrolichens, graminoids, ferns and small herbs. Snow patches are well developed in boreal and arctic mountains and in subarctic lowlands; they are well represented, though of much smaller extent, above the tree limit in the Alps, Pyrenees, Carpathians and Caucasus. They are found very locally in the Paeonian mountains, Sierra Nevada, Cordillera Central, Monti Sibillini, Abruzzi, Scottish Highlands and Sudeten.
Taxons (Liens actifs si espèces présentes)
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 ( Esp. caract. )
Kiaeria falcata (Hedw.) I.Hagen, 1915 ( Esp. caract. )
Ligusticum mutellina (L.) Crantz, 1767 ( Esp. caract. )
Luzula alpinopilosa (Chaix) Breistr., 1947 ( Esp. caract. )
Polytrichum juniperinum Hedw., 1801 ( Esp. caract. )
Polytrichum sexangulare Hedw. ( Esp. caract. )
Salix herbacea L., 1753 ( Esp. caract. )
Kiaeria falcata (Hedw.) I.Hagen, 1915 ( Esp. caract. )
Ligusticum mutellina (L.) Crantz, 1767 ( Esp. caract. )
Luzula alpinopilosa (Chaix) Breistr., 1947 ( Esp. caract. )
Polytrichum juniperinum Hedw., 1801 ( Esp. caract. )
Polytrichum sexangulare Hedw. ( Esp. caract. )
Salix herbacea L., 1753 ( Esp. caract. )
Analyse Ecologie du milieu (En fonction des espèces présentes)