Biotope - Typologie Européenne EUNIS

E1.2 - Niveau 3 : Pelouses calcaires vivaces et steppes riches en bases
Description
Perennial grasslands, often nutrient-poor and species-rich, on calcareous and other basic soils of the nemoral and steppe zones and of adjacent parts of the subboreal and submediterranean zones. Includes the calcareous grasslands of central and western Europe, alvar grasslands of the Baltic region, and basic grasslands of the steppe zone. Vegetation communities of Festuco-Brometea.
Taxons (Liens actifs si espèces présentes)
E1.29 - Niveau 4 : Pelouses à Festuca pallens
Description
Subcontinental xeric, thermophile grasslands of middle European collinar rock ledges, mostly dominated by the strong tufts of the glaucous Festuca pallens, Festuca sadlerana and Festuca pannonica and of the green Sesleria albicans, and with Dianthus gratianopolitanus, Carex humilis, Melica ciliata, Aster alpinus, Artemisia campestris ssp. lednicensis, Hieracium spp., Biscutella laevigata ssp. varia, Teucrium botrys, Teucrium montanum, Helianthemum canum, Iris aphylla, Allium strictum, Allium senescens ssp. montanum, locally distributed from French Jura and Rhine valley to sub-Pannonic foothils and Carpathians in Romania. The communities of the Festucion pallescentis often occupy isolated stations and include rare or relictual species which impart to many of them a distinctive biogeographical and physiognomic individuality. In particular, rare and highly disjunct western outposts occur in the Meuse basin of the Belgian and French Ardennes, harbouring, among others, very isolated populations of Draba aizoides var. montana, Artemisia alba ssp. saxatilis and Hieracium vogesiacum.
Taxons (Liens actifs si espèces présentes)
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