Subnitrophilous annual grassland

Land dominated by annual grasses and herbs, on soils slightly enriched in nitrates, in the thermo/meso-Mediterranean zones. Characteristic are [Bromus], [Aegilops], [Avena], [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 under the influence of pastoral activities. Subnitrophilous annual grassland is widespread as a successional stage after cultivation. Woody recolonisation may lead to maquis or garrigues.