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Biotope - Typologie Européenne EUNIS
G1.21 - Niveau 4 : Forêts riveraines à Fraxinus et Alnus, sur sols inondés par les crues mais drainés aux basses eaux
Description
Riparian forests of Fraxinus excelsior and Alnus glutinosa, sometimes Alnus incana, of middle European and northern Iberian lowland or hill watercourses, on soils periodically inundated by the annual rise of the river level, but otherwise well-drained and aerated during low-water; they differ from riparian alder woods within units G1.41 and G1.52 by the strong representation in the dominated layers of forest species not able to grow in permanently waterlogged soils.
Taxons (Liens actifs si espèces présentes)
G1.214 - Niveau 5 : Forêts galeries nord-ibériques à Alnus
Description
Riparian alder or ash-alder woods of collinar and montane streams of the northern Iberian peninsula, with a pronounced medio-European influence marked in particular by the presence of Fraxinus excelsior (and not Fraxinus angustifolia). They are characteristic of streams originating in the Pyrenees, the Cantabrian Cordillera, the Northern Galician mountains and the Catalonian ranges. The canopy may include Ulmus glabra, Quercus robur and tall willows; the undergrowth contains Sambucus nigra, Corylus avellana, Cornus sanguinea, Rubus caesius, Carex pendula, Carex remota, Festuca gigantea, Bromus ramosus, Lathraea clandestina, Circaea lutetiana, Hypericum androsaemum, Solanum dulcamara, Valeriana pyrenaica, Lysimachia nemorum, Saxifraga hirsuta, Galanthus nivalis, Athyrium filix-femina, Dryopteris dilatata, Osmunda regalis, Equisetum telmateia.
Taxons (Liens actifs si espèces présentes)
Athyrium filix-femina (L.) Roth, 1799 ( Esp. caract. )
Bromus ramosus Huds., 1762 ( Esp. caract. )
Carex pendula Huds., 1762 ( Esp. caract. )
Carex remota L., 1755 ( Esp. caract. )
Circaea lutetiana L., 1753 ( Esp. caract. )
Cornus sanguinea L., 1753 ( Esp. caract. )
Corylus avellana L., 1753 ( Esp. caract. )
Equisetum telmateia Ehrh., 1783 ( Esp. caract. )
Festuca gigantea (L.) Vill., 1787 ( Esp. caract. )
Fraxinus angustifolia Vahl, 1804 [nom. cons.] ( Esp. caract. )
Fraxinus excelsior L., 1753 ( Esp. caract. )
Galanthus nivalis L., 1753 ( Esp. caract. )
Hypericum androsaemum L., 1753 ( Esp. caract. )
Lathraea clandestina L., 1753 ( Esp. caract. )
Lysimachia nemorum L., 1753 ( Esp. caract. )
Osmunda regalis L., 1753 ( Esp. caract. )
Quercus robur L., 1753 ( Esp. caract. )
Rubus caesius L., 1753 ( Esp. caract. )
Sambucus nigra L., 1753 ( Esp. caract. )
Saxifraga hirsuta L., 1759 ( Esp. caract. )
Solanum dulcamara L., 1753 ( Esp. caract. )
Ulmus glabra Mill., 1768 ( Esp. caract. )
Valeriana pyrenaica L., 1753 ( Esp. caract. )
Bromus ramosus Huds., 1762 ( Esp. caract. )
Carex pendula Huds., 1762 ( Esp. caract. )
Carex remota L., 1755 ( Esp. caract. )
Circaea lutetiana L., 1753 ( Esp. caract. )
Cornus sanguinea L., 1753 ( Esp. caract. )
Corylus avellana L., 1753 ( Esp. caract. )
Equisetum telmateia Ehrh., 1783 ( Esp. caract. )
Festuca gigantea (L.) Vill., 1787 ( Esp. caract. )
Fraxinus angustifolia Vahl, 1804 [nom. cons.] ( Esp. caract. )
Fraxinus excelsior L., 1753 ( Esp. caract. )
Galanthus nivalis L., 1753 ( Esp. caract. )
Hypericum androsaemum L., 1753 ( Esp. caract. )
Lathraea clandestina L., 1753 ( Esp. caract. )
Lysimachia nemorum L., 1753 ( Esp. caract. )
Osmunda regalis L., 1753 ( Esp. caract. )
Quercus robur L., 1753 ( Esp. caract. )
Rubus caesius L., 1753 ( Esp. caract. )
Sambucus nigra L., 1753 ( Esp. caract. )
Saxifraga hirsuta L., 1759 ( Esp. caract. )
Solanum dulcamara L., 1753 ( Esp. caract. )
Ulmus glabra Mill., 1768 ( Esp. caract. )
Valeriana pyrenaica L., 1753 ( 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