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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)
E4.112 - Niveau 5 : Communautés alpines acidiphiles des combes à neige à Gnaphale
Description
Communities of areas covered by snow for six to eight months, with Carex foetida, Alopecurus gerardii, Omalotheca supina (Gnaphalium supinum) (including Omalotheca supina var. pusilla), Lepidium stylatum, Alchemilla pentaphyllea, Mucizonia sedoides, (Umbilicus sedoides, Sedum candollei), Sedum alpestre, Cardamine alpina, Carex pyrenaica, of the Alps, the eastern Carpathian system, the ranges of the Balkan peninsula, the Pyrenees; they extend to the subalpine level and include the isolated cryoro-Mediterranean formations of the Cordillera Central and the Sierra Nevada.
Taxons (Liens actifs si espèces présentes)
Alchemilla pentaphyllea L., 1753 ( Esp. caract. )
Cardamine alpina Willd., 1800 ( Esp. caract. )
Carex foetida All., 1785 ( Esp. caract. )
Carex pyrenaica Wahlenb., 1803 ( Esp. caract. )
Gnaphalium supinum L., 1768 ( Esp. caract. )
Mucizonia sedoides (DC.) D.A.Webb, 1961 ( Esp. caract. )
Omalotheca supina (L.) DC., 1838 ( Esp. caract. )
Sedum alpestre Vill., 1779 ( Esp. caract. )
Sedum candollei Raym.-Hamet, 1929 ( Esp. caract. )
Umbilicus sedoides (DC.) DC., 1828 ( Esp. caract. )
Cardamine alpina Willd., 1800 ( Esp. caract. )
Carex foetida All., 1785 ( Esp. caract. )
Carex pyrenaica Wahlenb., 1803 ( Esp. caract. )
Gnaphalium supinum L., 1768 ( Esp. caract. )
Mucizonia sedoides (DC.) D.A.Webb, 1961 ( Esp. caract. )
Omalotheca supina (L.) DC., 1838 ( Esp. caract. )
Sedum alpestre Vill., 1779 ( Esp. caract. )
Sedum candollei Raym.-Hamet, 1929 ( Esp. caract. )
Umbilicus sedoides (DC.) DC., 1828 ( Esp. caract. )
Analyse Ecologie du milieu (En fonction des espèces présentes)