S2-1 - Fourrés à Salix nains subarctiques et alpins

Subarctic and alpine dwarf Salix scrub

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Salix-dominated dwarf scrub, often with abundant bryophytes and lichens, on skeletal calcareous or siliceous soils in late snow beds with a short growing-season, occurring in the Arctic and subarctic zones and in the high mountains of temperate Europe, increasingly local and fragmentary to the south.
Remark: This habitat also occurs in the Arctic zone (e.g. Svalbard), which is not reflected in its current name.

Espèces diagnostiques

Salix retusa, Salix herbacea, Salix reticulata, Bistorta vivipara, Silene acaulis, Salix serpillifolia, Poa alpina, Gnaphalium supinum, Kobresia myosuroides, Veronica aphylla, Bartsia alpina, Minuartia sedoides, Sibbaldia procumbens, Carex foetida, Veronica alpina, Sagina glabra, Ranunculus alpestris, Gentiana nivalis

Espèces constantes

Bistorta vivipara, Salix herbacea, Poa alpina, Salix retusa, Silene acaulis, Salix reticulata, Gnaphalium supinum, Bartsia alpina, Myosotis alpestris, Dryas octopetala, Homogyne alpina, Cetraria islandica, Sibbaldia procumbens, Campanula scheuchzeri, Veronica alpina, Soldanella alpina, Saxifraga oppositifolia, Plantago alpina, Minuartia sedoides, Carex sempervirens

Espèces dominantes

Salix herbacea, Salix retusa, Salix reticulata, Salix serpillifolia

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)