T1-512 - Aulnaies marécageuses oligotrophes

Oligotrophic swamp alder forests

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Oligotrophic or meso-oligotrophic, acidocline Alnus glutinosa woods of fens and poorly drained banks of brooks or small rivers of western Europe, mostly characteristic of siliceous regions and Atlantic climates, south to Galicia. Betula pubescens and Frangula alnus often accompany the alders. The ground layer is usually rich in Sphagnum spp. and includes Carex laevigata, Equisetum sylvaticum and many ferns, including Oreopteris limbosperma, Blechnum spicant, Athyrium filix-femina, Dryopteris cristata and Dryopteris carthusiana.

Bibliography

 European Topic Centre on Biological Diversity, 2021. EUNIS terrestrial habitat classification 2021 including crosswalks. ETC/BD-EEA. Table Excel transmise par S. Hennekens (Alterra) le 14/02/2022. (Source)