R1-P - Pelouses sableuses intérieures océaniques à subcontinentales sur sols acides et neutres

Oceanic to subcontinental inland sand grassland on dry acid and neutral soils

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Moderately open to closed grassland on nutrient-poor sandy soils, mostly acid to neutral though sometimes calcareous, on plains, river terraces and cliffs through the lowlands and submontane belts of temperate Europe. Narrow-leaved, tussocky graminoids dominate, associated herbs can be numerous and more open swards can have rich annual and cryptogam floras. Across the wide range, there is considerable variety among the dominants and companions, and the extreme topoclimate can provide a western outpost for steppe elements.

Espèces diagnostiques

Festuca stricta subsp. trachyphylla, Brachythecium albicans, Trifolium arvense, Cerastium semidecandrum, Pilosella officinarum, Rumex acetosella, Jasione montana, Corynephorus canescens, Polytrichum piliferum, Ceratodon purpureus, Artemisia campestris

Espèces constantes

Rumex acetosella, Pilosella officinarum, Agrostis capillaris, Trifolium arvense, Hypochaeris radicata, Jasione montana, Achillea millefolium aggr., Ceratodon purpureus, Plantago lanceolata, Artemisia campestris, Corynephorus canescens, Festuca ovina, Polytrichum piliferum, Sedum acre, Cerastium semidecandrum, Potentilla argentea, Arenaria serpyllifolia, Hypericum perforatum, Thymus serpyllum, Poa pratensis aggr.

Espèces dominantes

Festuca ovina, Pilosella officinarum, Festuca stricta subsp. trachyphylla

Bibliographie

 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)