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Biotope - Typologie Européenne EUNIS
D2.2 - Niveau 3 : Bas-marais oligotrophes et tourbières des sources d'eau douce
Description
Peatlands, flushes and vegetated springs with moderately acid ground water, within valley mires or on hillsides. As in the rich fens, the water level is at or near the surface of the substratum and peat formation depends on a permanently high watertable. Poor-fen vegetation is typically dominated by small sedges (Carex canescens, Carex echinata, Carex nigra, Eriophorum angustifolium, Eriophorum scheuchzeri, Trichophorum cespitosum), with pleurocarpous mosses (Calliergonella cuspidata, Calliergon sarmentosum, Calliergon stramineum, Drepanocladus exannulatus, Drepanocladus fluitans) or sphagna (Sphagnum cuspidatum, Sphagnum papillosum, Sphagnum recurvum agg., Sphagnum russowii, Sphagnum subsecundum agg.). Other characteristic vascular plants are Agrostis canina, Cardamine pratensis, Juncus filiformis, Ranunculus flammula and Viola palustris. Soft-water spring mires (D2.2C) are often dominated by Montia fontana or bryophytes (Bryum spp., Philonotis spp., Pohlia spp.). Excluded are the water body of soft-water springs (C2.1), and incompletely terrestrialized fringing vegetation (C3.2) or vegetation rafts (D2.3).
Taxons (Liens actifs si espèces présentes)
Agrostis canina L., 1753 [nom. et typ. cons.], Bryozoa sp., Carex sp., Carex sp., Corallinaceae sp., Corallinaceae sp., Corallinaceae sp., Corallinaceae sp., Cratoneuron sp., Crisiidae sp., Ectocarpaceae sp., Eriophorum sp., Lithophyllum sp., Marenzelleria sp., Nardus sp., Narthecium sp., Nematoda sp., Oligochaeta sp., Oligochaeta sp., Peyssonnelia sp., Pohlia Hedw., 1801, Porifera sp., Scrupocellaria sp., Tubificoides sp., Zygogonium sp.,
D2.26 - Niveau 4 : Bas-marais à Eriophorum angustifolium
Description
Eriophorum angustifolium-dominated swards of usually very wet sites within acidic fens of nemoral Europe, generally with a sphagnum carpet, formed, in particular, by Sphagnum cuspidatum; they are closely similar to, and may merge into, Eriophorum-Sphagnum floating carpets of unit D2.38. Several Carex species may be present.
Taxons (Liens actifs si espèces présentes)
Carex L., 1753 ( Esp. caract. )
Eriophorum angustifolium Roth, 1802 ( Esp. caract. )
Eriophorum L., 1753 ( Esp. caract. )
Sphagnum cuspidatum Ehrh. ex Hoffm., 1796 ( Esp. caract. )
Sphagnum L., 1753 ( Esp. caract. )
Eriophorum angustifolium Roth, 1802 ( Esp. caract. )
Eriophorum L., 1753 ( Esp. caract. )
Sphagnum cuspidatum Ehrh. ex Hoffm., 1796 ( Esp. caract. )
Sphagnum L., 1753 ( Esp. caract. )
Analyse Ecologie du milieu (En fonction des espèces présentes)