R1-R - Pelouses sèches ouvertes, acides et neutres, méditerranéennes à atlantiques (EUNIS 2022)

R1-R - Pelouses sèches ouvertes, acides et neutres, méditerranéennes à atlantiques

Mediterranean to Atlantic open, dry, acid and neutral grassland

R1-Q - Pelouses siliceuses des congères de sables et des dunes continentales

R1-S - Pelouses des sols métallifères d'Europe occidentale et centrale

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Usually ephemeral vegetation related to the yearly cycle of spring rains and summer drought through the western Mediterranean and more fragmentarily into the Atlantic and continental areas where a high diversity of small annual plants make a brief, colourful appearance on bare patches of nutrient-poor, acidic soils. Typically, the habitat occurs as small patches in intimate mosaics with heath and scrub and has provided a valuable supplementary resource for sheep at lambing time.

Espèces diagnostiques

Tuberaria guttata, Hypochaeris glabra, Ornithopus compressus, Filago minima, Tolpis barbata, Filago gallica, Galium divaricatum, Linaria pelisseriana, Vulpia myuros, Vulpia bromoides, Ornithopus pinnatus, Anthyllis lotoides, Aira cupaniana, Hispidella hispanica, Micropyrum tenellum, Moenchia erecta, Aira caryophyllea, Filago carpetana, Trifolium cherleri, Trifolium arvense

Espèces constantes

Tuberaria guttata, Hypochaeris glabra, Filago minima, Trifolium arvense, Ornithopus compressus, Trifolium campestre, Poa bulbosa, Vulpia myuros, Aira caryophyllea, Filago gallica, Vulpia bromoides, Rumex acetosella, Leontodon saxatilis, Tolpis barbata, Micropyrum tenellum, Vulpia ciliata, Rumex bucephalophorus, Briza maxima, Ornithopus perpusillus, Jasione montana

Espèces dominantes

Tuberaria guttata

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)