2. Données et outils
  3. Rechercher un habitat
  4. U3-6 - Falaises continentales riches en bases des hautes montagnes des zones tempérées
  5. Description
U3-6 - Falaises continentales riches en bases des hautes montagnes des zones tempérées

Temperate high-mountain base-rich inland cliff
U3-4 - Falaises continentales siliceuses méditerranéennes
U3-7 - Falaises continentales riches en bases, planitiaires à montagnardes des zones tempérées

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Calcareous or base-rich rock faces and crevices at high altitudes of European mountain ranges in the temperate region. The chasmophytes, dwarf and cushion-like chamaephytes and hemicryptophytes, and numerous fern species and bryophytes, are very well adapted to the extreme habitat conditions, like strong solar radiation, a low water content, high day/night and seasonal temperature fluctuations, strong winds, and the absence of snow cover protection. The soil is in general very poorly developed but can accumulate in crevices. Variation in the vascular flora is high across the continent, and due to geographical isolation and variety in site conditions, numerous relict, endemic, rare and protected species can be found on these cliffs.

Espèces diagnostiques

Draba tomentosa, Saxifraga squarrosa, Potentilla clusiana, Campanula zoysii, Androsace helvetica, Sesleria sphaerocephala, Carex firma, Campanula cochleariifolia, Saxifraga media, Potentilla nitida, Globularia repens, Rhamnus pumila, Artemisia umbelliformis, Primula auricula, Carex mucronata, Trisetum alpestre, Draba stellata, Phyteuma charmelii, Valeriana apula, Saxifraga paniculata

Espèces constantes

Campanula cochleariifolia, Saxifraga paniculata, Carex firma, Globularia repens, Cystopteris fragilis, Sesleria caerulea, Asplenium ruta-muraria, Silene acaulis, Saxifraga oppositifolia, Primula auricula, Potentilla clusiana, Viola biflora, Saxifraga moschata, Rhamnus pumila, Festuca quadriflora, Saxifraga squarrosa

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)