R1-N - Pelouses sèches ouvertes acides et neutres supraméditerranéennes ibériques

Open Iberian supramediterranean dry acid and neutral grassland

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Dominated by small tussock grasses, forbs and mat-formers, including many endemics, this grassland occurs on shallow skeletal soils, nutrient-poor and drought-prone, developed over outcrops of siliceous and ultramafic bedrocks at moderate to high altitudes in the western Iberian Peninsula. The habitat is a traditional part of pastoral landscapes grazed mostly by sheep.

Espèces diagnostiques

Lotus glareosus, Pilosella castellana, Koeleria crassipes, Arenaria querioides, Festuca summilusitana, Armeria eriophylla, Thymus izcoi, Neoschischkinia reuteri, Plantago subulata, Neoschischkinia truncatula, Leucanthemopsis pulverulenta, Reseda virgata, Molineriella laevis, Sedum brevifolium, Sagina merinoi, Paronychia polygonifolia, Jasione crispa aggr., Odontarrhena serpyllifolia, Festuca indigesta, Cerastium gracile

Espèces constantes

Lotus glareosus, Pilosella castellana, Plantago subulata, Sedum brevifolium, Rumex acetosella, Poa bulbosa, Jasione crispa aggr., Neoschischkinia truncatula, Koeleria crassipes, Filago minima, Festuca indigesta, Agrostis castellana, Arenaria querioides, Polytrichum piliferum, Festuca summilusitana, Tuberaria guttata, Neoschischkinia reuteri, Nardus stricta, Festuca iberica, Avenella flexuosa

Espèces dominantes

Festuca indigesta, Nardus stricta

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)