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91E0 - Forêts alluviales à Alnus glutinosa et Fraxinus excelsior (Alno-Padion, Alnion incanae, Salicion albae)

Alluvial forests with Alnus glutinosa and Fraxinus excelsior (Alno-Padion, Alnion incanae, Salicion albae)

Liste hiérarchisée et descriptifs des habitats d'intérêt communautaire de la directive "Habitats"

Description

Riparian forests of Fraxinus excelsior and Alnus glutinosa, of temperate and Boreal Europe lowland and hill watercourses (44.3: Alno-Padion); riparian woods of Alnus incanae of montane and sub-montane rivers of the Alps and the northern Apennines (44.2: Alnion incanae); arborescent galleries of tall Salix alba, S. fragilis and Populus nigra, along medio-European lowland, hill or sub-montane rivers (44.13: Salicion albae). All types occur on heavy soils (generally rich in alluvial deposits) periodically inundated by the annual rise of the river (or brook) level, but otherwise well-drained and aerated during low-water. The herbaceous layer invariably includes many large species (Filipendula ulmaria, Angelica sylvestris, Cardamine spp., Rumex sanguineus, Carex spp., Cirsium oleraceum) and various vernal geophytes can occur, such as Ranunculus ficaria, Anemone nemorosa, A. ranunculoides, Corydalis solida.
This habitat includes several sub-types: ash-alder woods of springs and their rivers (44.31 - Carici remotae-Fraxinetum); ash-alder woods of fast-flowing rivers (44.32 - Stellario-Alnetum glutinosae); ash-alder woods of slow-flowing rivers (44.33 - Pruno-Fraxinetum, Ulmo-Fraxinetum); montane grey alder galleries (44.21 - Calamagrosti variae-Alnetum incanae Moor 58); sub-montane grey alder galleries (44.22 - Equiseto hyemalis-Alnetum incanae Moor 58); white willow gallery forests (44.13 - Salicion albae). The Spanish types belong to the alliance Osmundo-Alnion (Cantabric atlantic and southeast Iberia peninsula).

Espèces caractéristiques

Plants: Tree layer - Alnus glutinosa, Alnus incanae, Fraxinus excelsior; Populus nigra, Salix alba, S. fragilis; Betula pubescens, Ulmus glabra; Herb layer - Angelica sylvestris, Cardamine amara, C. pratensis, Carex acutiformis, C. pendula, C. remota, C. strigosa, C. sylvatica, Cirsium oleraceum, Equisetum telmateia, Equisetum spp., Filipendula ulmaria, Geranium sylvaticum, Geum rivale, Lycopus europaeus, Lysimachia nemorum, Rumex sanguineus, Stellaria nemorum, Urtica dioica.

Correspondances avec la classification du Paléarctique

44.3, 44.2 and 44.13

Correspondances avec d'autres classifications

United Kingdom classification: ‘W5 Alnus glutinosa-Carex paniculata woodland', ‘W6 Alnus glutinosa-Urtica dioica woodland)' and ‘W7 Alnus glutinosa-Fraxinus excelsior-Lysimachia nemorum woodland'.
German classification: ‘43040401 Weichholzauenwald mit weitgehend ungertörter Überflutungsdynamik', ‘43040402 Weichholzauenwald ohne Überflutung', ‘430403 Schwarzerlenwald (an Fließgewässern)', ‘430402 Eschenwald (an Fließgewässern)', ‘430401 Grauerlenauenwald (montan, Alpenvorland, Alpen).
Nordic classification: ‘2234 Fraxinus excelsior-typ' and ‘224 Alskog'.

Remarques

Most of these forests are in contact with humid meadows or ravine forests (Tilio-Acerion). A succession towards Carpinion (Primulo-Carpinetum) can be observed.

Bibliographie

Conseil de l'Union européenne, 2013. Directive 2013/17/UE du Conseil du 13 mai 2013 portant adaptation de certaines directives dans le domaine de l'environnement, du fait de l'adhésion de la République de Croatie. Annexes. Partie B Protection de la nature. Journal officiel de l'Union européenne, L 158 du 10/06/2013, p. : 195-203. (Source)

Brunet, J. (1991). Vegetation i Skånes alm- och askskogar. Sven. Bot. Tidskr. 85:377-384.