⌘K
Biotope - Typologie Européenne EUNIS
C2.2 - Niveau 3 : Cours d'eau permanents, non soumis aux marées, à écoulement turbulent et rapide
Description
Permanent water courses with fast-flowing turbulent water and their associated animal and microscopic algal pelagic and benthic communities. Rivers, streams, brooks, rivulets, rills, torrents, waterfalls, cascades and rapids are included. The bed is typically composed of rocks, stones or gravel with only occasional sandy and silty patches. Features of the river bed, uncovered by low water or permanently emerging, such as gravel or rock islands and bars are treated as the littoral zone (C3). Includes high, mid and low-altitude, usually small to medium-sized streams as defined by the Water Framework Directive.
Taxons (Liens actifs si espèces présentes)
C2.26 - Niveau 4 : Végétations oligotrophes des cours d'eau à débit rapide riches en calcaire
Description
Euhydrophyte communities of Palaearctic streams poor in nutrients but rich in lime, characterized in particular by Potamogeton coloratus and Chara hispida or by tufa-forming mosses and algae.
Taxons (Liens actifs si espèces présentes)
Chara hispida L., 1753 ( Esp. caract. )
Potamogeton coloratus Hornem., 1813 ( Esp. caract. )
Potamogeton coloratus Hornem., 1813 ( 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