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Biotopes & milieux

Biotope - Typologie Européenne EUNIS

D2 - Niveau 2 : Tourbières de vallée, bas-marais acides et tourbières de transition
Description
Weakly to strongly acid peatlands, flushes and vegetated rafts formed in situations where they receive water from the surrounding landscape or are intermediate between land and water. Included are quaking bogs and vegetated non-calcareous springs. Excluded are calcareous fens (D4), and reedbeds (C3, D5).
Taxons (Liens actifs si espèces présentes)
D2.3 - Niveau 3 : Tourbières de transition et tourbières tremblantes
Description
Incompletely terrestrialized wetlands occupied by peat-forming vegetation with acid groundwater or (for vegetation rafts) acid underlying pool or lake water. Characteristic species are Calla palustris, Carex chordorrhiza, Carex diandra, Carex heleonastes, Carex lasiocarpa, Carex limosa, Carex rostrata, Menyanthes trifoliata, Potentilla palustris, Rhynchospora alba, Scheuchzeria palustris. Included are rafts of Sphagnum and Eriophorum (D2.38) and quaking rafts of Molinia caerulea (D2.3D). Excluded are stands of vegetation fringing water bodies (C3.2) unless the vegetation raft is sufficiently extensive to count as a habitat in its own right.
Taxons (Liens actifs si espèces présentes)
Aeonium sp. ( Esp. caract. )
Carex limosa L., 1753 ( Esp. caract. )
Carex sp. ( Esp. caract. )
Ensis sp. ( Esp. caract. )
Greenovia sp. ( Esp. caract. )
Hypnum sp. ( Esp. caract. )
Maytenus sp. ( Esp. caract. )
Menyanthes trifoliata L., 1753 ( Esp. caract. )
Micromeria sp. ( Esp. caract. )
Nephtys sp. ( Esp. caract. )
Periploca sp. ( Esp. caract. )
Polychaeta sp. ( Esp. caract. )
Salix sp. ( Esp. caract. )
Tortula sp. ( 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