Biotope - Typologie Européenne EUNIS

B1.31 - Niveau 4 : Dunes mobiles embryonnaires
Description
Formations of the coasts of nemoral, steppe, Mediterranean and warm-temperate humid zones, representing the first stages of dune construction, constituted by ripples or raised sand surfaces of the upper beach or by a seaward fringe at the foot of the tall dunes. Typically Elymus farctus, Otanthus maritimus, Sporobolus pungens, Pancratium maritimum, Medicago marina or Anthemis tomentosa may be present. The vegetation may belong to the class Ammophiletea with communities of Otanthus maritimus, Agropyro juncei-Sporoboletum pungentis, Cypero mucronati-Agropyretum juncei, Elymetum sabulosi, Medicagini marinae-Ammophiletum australis and species Elytrigia bessarabica, Glycyrrhiza glabra, Limonium graecum, Limonium sinuatum, Zygophyllum album, Inula crithmoides, Scirpus holoschoenus, Paronychia argentea and Centaurea spinosa.
Taxons (Liens actifs si espèces présentes)
Anthemis tomentosa L., 1753, Elymus farctus (Viv.) Runemark ex Melderis, 1978, Glycyrrhiza glabra L., 1753, Inula crithmoides L., 1753, Limonium graecum (Poir.) Rech.f., 1943, Limonium sinuatum (L.) Mill., 1768, Medicago marina L., 1753, Otanthus maritimus (L.) Hoffmanns. & Link, 1824, Pancratium maritimum L., 1753, Paronychia argentea Lam., 1779, Scirpus holoschoenus L., 1753, Sporobolus pungens (Schreb.) Kunth, 1829,
B1.311 - Niveau 5 : Dunes embryonnaires atlantiques
Description
Embryonic dunes of the Atlantic, south to southern Iberia, of the North Sea and of the Baltic coasts of Denmark, Germany, southern Sweden, Poland, the Baltic States, Russia and southwestern Finland, with Elymus farctus (Agropyron junceum) accompanied by Leymus arenarius in the north, by Euphorbia paralias on middle and southern Atlantic shores.
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