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Biotopes & milieux

Biotope - Typologie CORINE

42.21 - Niveau 4 : Pessières sub-alpines des Alpes
Description
Picea abies forests of the lower sub-alpine level, and of anomalous stations in the montane level, of the outer, intermediate and inner Alps; in the latter, they are often in continuity with the montane spruce forests of 42.22. The spruces are often stunted or columnar; they are accompanied by an undergrowth of decidedly sub-alpine affinities.
Taxons (Liens actifs si espèces présentes)
42.215 - Niveau 5 : Pessières de stations froides
Description
Picea abies woods of anomalous stations at the montane or sub-alpine level, in particular block forests of "ice cellars" (shaded rocky screes through which cold air flows), woods developed in valleys and depressions where cold air accumulates on clear nights, woods colonizing stabilised screes and narrow bands of rocks, woods on moist sites.
Taxons (Liens actifs si espèces présentes)
Adenostyles alliariae (Gouan) A.Kern., 1871 ( Comb. caract. )
Asplenium trichomanes L., 1753 ( Comb. caract. )
Asplenium viride Huds., 1762 ( Comb. caract. )
Gymnocarpium dryopteris (L.) Newman, 1851 ( Comb. caract. )
Lonicera nigra L., 1753 ( Comb. caract. )
Maianthemum bifolium (L.) F.W.Schmidt, 1794 ( Comb. caract. )
Melampyrum sylvaticum L., 1753 ( Comb. caract. )
Orthilia secunda (L.) House, 1921 ( Comb. caract. )
Picea abies (L.) H.Karst., 1881 ( Comb. caract. )
Prenanthes purpurea L., 1753 ( Comb. caract. )
Rosa pendulina L., 1753 ( Comb. 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