R4-1 - Combes à neige avec végétation

Snow-bed vegetation

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Vegetation on skeletal, sometimes humic, soils developed beneath late-lying snow patches in Arctic and subarctic lowlands, boreal mountains and temperate high mountains of Central and Southern Europe. Dominated by grasses, sedges, herbs and cryptogams, the species composition depends on regional climate, altitude, bedrock and soil type, and sometimes includes endemics, particularly in Southern Europe.

Espèces diagnostiques

Veronica alpina, Gnaphalium supinum, Salix herbacea, Sibbaldia procumbens, Saxifraga androsacea, Gnaphalium hoppeanum, Hornungia alpina, Cardamine alpina, Carex pyrenaica, Cerastium cerastoides, Luzula alpinopilosa, Poa alpina, Alchemilla pentaphyllea, Ranunculus alpestris, Potentilla brauneana, Taraxacum sect. Alpina, Sedum alpestre, Leucanthemopsis alpina, Ranunculus crenatus, Alchemilla fissa

Espèces constantes

Poa alpina, Salix herbacea, Gnaphalium supinum, Veronica alpina, Bistorta vivipara, Sibbaldia procumbens, Hornungia alpina, Silene acaulis, Luzula alpinopilosa, Leucanthemopsis alpina, Ranunculus alpestris, Saxifraga oppositifolia, Cerastium cerastoides, Saxifraga stellaris, Saxifraga androsacea, Sedum alpestre, Myosotis alpestris, Geum montanum, Ranunculus glacialis, Arabis alpina

Bibliographie

 European Topic Centre on Biological Diversity, 2021. EUNIS terrestrial habitat classification 2021 including crosswalks. ETC/BD-EEA. Table Excel transmise par S. Hennekens (Alterra) le 14/02/2022. (Source)