V3-2 - Pelouses à annuelles subnitrophiles méditerranéennes

Mediterranean subnitrophilous annual grasslands

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Land dominated by annual grasses and herbs, on soils slightly enriched in nitrates, in the meso- and thermo-Mediterranean zones. Characteristic are annual species of Aegilops, Avena, Bromus, Vulpia, crucifers and leguminous plants. These annuals occur as pioneers of bare soils slightly nitrified by aeration or organic addition, along roads, on land-fills and in interstitial spaces of cultivation. They also replace the oligotrophic annual vegetation of Mediterranean xeric grasslands (R1D, R1F) under the influence of pastoral activities. Subnitrophilous annual grassland is widespread as a successional stage after cultivation. Woody re-colonisation may lead to maquis (S5) or garrigue (S6).

Espèces diagnostiques

Anacyclus clavatus, Lolium rigidum, Biscutella auriculata, Hypecoum imberbe, Hordeum murinum, Fumaria parviflora, Calendula arvensis, Roemeria hybrida, Galium tricornutum, Papaver rhoeas, Papaver hybridum, Diplotaxis virgata, Vicia monantha, Vicia peregrina, Rapistrum rugosum, Anchusa azurea, Avena sterilis, Anisantha diandra, Sisymbrium crassifolium, Glebionis coronaria

Espèces constantes

Hordeum murinum, Convolvulus arvensis, Lolium rigidum, Papaver rhoeas, Avena barbata, Vicia sativa, Sonchus oleraceus, Anisantha madritensis, Bromus hordeaceus, Anagallis arvensis, Anacyclus clavatus, Eryngium campestre, Dactylis glomerata, Calendula arvensis, Sherardia arvensis, Plantago lanceolata, Medicago polymorpha aggr., Avena sterilis, Trifolium campestre, Erodium cicutarium

Espèces dominantes

Hordeum murinum

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)