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Biotopes & milieux

Biotope - Typologie Européenne EUNIS

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., Carex limosa L., 1753, Carex sp., Ensis sp., Greenovia sp., Hypnum sp., Maytenus sp., Menyanthes trifoliata L., 1753, Micromeria sp., Nephtys sp., Periploca sp., Polychaeta sp., Salix sp., Tortula sp.,
D2.3B - Niveau 4 : Tapis de mousses brunes
Description
Transition mire communities of the Palaearctic domaine dominated by Drepanocladus exannulatus, Drepanocladus revolvens, Scorpidium scorpioides, Calliergon giganteum, Calliergon cuspidatum, Calliergon richardsonii, Campylium stellatum, Paludella squarrosa, associated with sparse Carex limosa, Carex rostrata, Carex lasiocarpa, Carex chordorrhiza, Carex aquatilis, sometimes with Potentilla palustris, Equisetum fluviatile, Sphagnum recurvum, Sphagnum dusenii, Sphagnum riparium, Sphagnum squarrosum, Sphagnum subsecundum or Sphagnum teres, Sphagnum warnstorfii, Sphagnum contortum, Sphagnum auriculatum, Sphagnum platyphyllum, characteristic of mesocline or basicline quaking bogs, often occurring in mosaic with Carex lasiocarpa or Carex diandra formations.
Taxons (Liens actifs si espèces présentes)
Calliergon cuspidatum (Hedw.) Kindb., 1894 ( Esp. caract. )
Calliergon giganteum (Schimp.) Kindb., 1894 ( Esp. caract. )
Calliergon richardsonii (Mitt.) Kindb., 1897 ( Esp. caract. )
Campylium stellatum (Hedw.) Lange & C.E.O.Jensen ( Esp. caract. )
Carex chordorrhiza L.f., 1782 ( Esp. caract. )
Carex diandra Schrank, 1781 ( Esp. caract. )
Carex lasiocarpa Ehrh., 1784 ( Esp. caract. )
Carex limosa L., 1753 ( Esp. caract. )
Carex rostrata Stokes, 1787 [nom. et typ. cons.] ( Esp. caract. )
Drepanocladus exannulatus (Schimp.) Warnst., 1903 ( Esp. caract. )
Drepanocladus revolvens (Sw. ex anon.) Warnst. ( Esp. caract. )
Equisetum fluviatile L., 1754 ( Esp. caract. )
Paludella squarrosa (Hedw.) Brid., 1817 ( Esp. caract. )
Potentilla palustris (L.) Scop., 1771 ( Esp. caract. )
Scorpidium scorpioides (Hedw.) Limpr., 1899 ( Esp. caract. )
Sphagnum auriculatum Schimp., 1857 ( Esp. caract. )
Sphagnum contortum Schultz, 1819 ( Esp. caract. )
Sphagnum dusenii (C.E.O.Jensen) Russow & Warnst. ( Esp. caract. )
Sphagnum platyphyllum (Lindb. ex Braithw.) Warnst., 1884 ( Esp. caract. )
Sphagnum recurvum P.Beauv., 1805 ( Esp. caract. )
Sphagnum riparium Ã…ngstr., 1864 ( Esp. caract. )
Sphagnum squarrosum Crome, 1803 ( Esp. caract. )
Sphagnum subsecundum Nees, 1819 ( Esp. caract. )
Sphagnum teres (Schimp.) Ã…ngstr., 1861 ( Esp. caract. )
Sphagnum warnstorfii Russow, 1888 ( 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