Rivières naturelles de Fennoscandie

Boreal and hemiboreal natural and near-natural river systems or parts of such systems containing nutrient-poor water. The water level shows great amplitude, up to 6 m during the year. Especially during the spring, the water level is high. The water-dynamics can vary and contain waterfalls, rapid streams, calm water, and small lakes adjacent to the river. The water erosion causes a higher amount of nutrients towards the river-mouth, where sedimentation starts. In higher levels the rivers are characterized by great, very cold water flows, coming from glaciers, deep snowbeds and large snow-covered areas in mire- and woodlands. In addition the water surface in placid river sections is frozen to ice every winter. These circumstances create ecosystems unique to this part of Europe.

Source : Référentiel HABREF v7 (INPN/MNHN)

3210 — Rivières naturelles de Fennoscandie est un habitat classé sous la typologie Habitats d'intérêt communautaire (Habitats d’intérêt communautaire). Il est un sous-niveau de l’habitat 32 — Eaux courantes. Aucune espèce documentée comme inféodée à cet habitat n’est référencée dans la base actuelle.

Source : Ontologia (synthèse)