U3-4 - Falaises continentales siliceuses méditerranéennes

Mediterranean siliceous inland cliff

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Siliceous rock walls and cliffs from the lowlands to high mountains in the Mediterranean, formed chiefly of igneous or metamorphic rocks which offer a diversity of niches for colonisation depending on the rock texture, schistosity, moisture content and chemistry. Typically they have cushion or rosulate vascular plants, some of them succulent, ferns and dwarf shrubs, with bryophytes, lichens, epilithic and endolithic micro-organisms.

Espèces diagnostiques

Armeria leucocephala, Potentilla crassinervia, Castroviejoa frigida, Phyteuma serratum, Festuca sardoa, Bupleurum stellatum, Silene requienii, Asarina procumbens, Saxifraga pedemontana, Laserpitium halleri, Hieracium amplexicaule, Sedum dasyphyllum, Leucanthemum monspeliense, Asplenium septentrionale

Espèces constantes

Helichrysum italicum, Asplenium trichomanes, Sedum dasyphyllum, Asplenium septentrionale, Potentilla crassinervia, Dianthus sylvestris, Armeria leucocephala, Umbilicus rupestris, Castroviejoa frigida, Sedum brevifolium, Saxifraga pedemontana, Phyteuma serratum, Hieracium amplexicaule, Asplenium adiantum-nigrum, Hypochaeris robertia, Festuca sardoa, Asarina procumbens

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)