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Biotope - Typologie Européenne EUNIS
C2.12 - Niveau 4 : Sources d'eau dure
Description
Springs rich in calcium, typically due to calcareous tufa formation. Species-rich habitats with high moss cover, high dominance of moss Cratoneuron commutatum is typical. The stands belong to alliances Cratoneurion commutati and Lycopodo-Cratoneurion commutati with typical species Arabis soyeri, Saxifraga aizoides, Viola biflora, Cochlearia pyrenaica, Bryum pseudotriquetrum, Conocephalum conicum, Eucladium verticillatum and Palustriella commutata.
Taxons (Liens actifs si espèces présentes)
C2.121 - Niveau 5 : Sources pétrifiantes avec formations de tuf ou de travertins
Description
Communities of calcareous, petrifying springs of the Alps, the pre-Alpine regions and of the middle European Hercynian ranges and their periphery, forming and colonizing large tufa deposits. When active, tufa springs comprise a hydrosere in which the Cratoneurion plants, and in particular, Cratoneuron spp., are accompanied by fen species such as Carex lepidocarpa and Sesleria caerulea; the latter may physiognomically dominate both the hydrosere and the adjacent xerosere, developed on fossil tufa deposits, in which it is accompanied by Brometalia plants.
Taxons (Liens actifs si espèces présentes)
Carex lepidocarpa Tausch, 1834 ( Esp. caract. )
Cratoneuron (Sull.) Spruce, 1867 ( Esp. caract. )
Sesleria caerulea (L.) Ard., 1763 ( Esp. caract. )
Cratoneuron (Sull.) Spruce, 1867 ( Esp. caract. )
Sesleria caerulea (L.) Ard., 1763 ( Esp. caract. )
Analyse Ecologie du milieu (En fonction des espèces présentes)
Faible
Forte
— nb espèces indicatrices par classe
Humidité
Réaction du sol (pH)
Nutriments
Lumière
Matière organique
Granulométrie
Salinité