Western Mediterranean base-rich scree
Calcareous and ultrabasic scree, with boulders, rock debris and riverine gravel derived from sedimentary and metamorphic rocks, ultramafics and basic volcanics occurring through the western Mediterranean, from lowlands to the high mountains. Epilithic bryophytes and lichens may be very diverse, particularly in the mountains, where they are mostly found in crevices and other shady and humid microsites of immobile boulders. The vascular plant vegetation comprises hemicryptophytes and chamaephytes adapted to the mechanical disturbance caused by scree movements, shortages in water supply and lack of fine-grained soil. The habitat becomes scarcer and more scattered in the foothills and lowlands and more prone to be affected by human disturbances, such as quarrying and infrastructure development. Nevertheless, high mountain screes are usually well preserved in a very natural state.
Código Eunis 2021: U28
Especies características
Diagnósticas
Draba hispanica, Erodium daucoides, Galeopsis angustifolia, Hormathophylla longicaulis, Ptychotis saxifraga, Rumex scutatus, Saxifraga erioblasta,Constantes
Achnatherum calamagrostis, Galeopsis angustifolia, Hieracium murorum, Picris hieracioides, Rumex scutatus, Vincetoxicum hirundinaria,Correspondencia con códigos EUNIS 2012
Tipo de relación | Código EUNIS 2012 |
---|---|
< | H2.6 |
Hábitats de la Directiva Hábitats asociados
Tipo de relación | Hábitat del Anexo I de la Directiva Hábitats |
---|---|
? | 8130. Desprendimientos mediterráneos occidentales y termófilos |