Conservation status of the narrow endemic gypsophile Ononis tridentata subsp. crassifolia in southern Spain: effects of habitat disturbance

摘要: Ononis tridentata L. subsp. crassifolia (Leguminosae) is a narrow endemic plant restricted to gypsum outcrops in south-east Spain. Its habitat and populations are currently threatened by anthropogenic disturbance. Because of the paucity information concerning its distribution, abundance response disturbance, we assessed status evaluated impacts quarrying, ploughing, grazing afforestation. Distribution population size were estimated field surveys, censuses mapping. We measured cover, volume, fruit seed production, predation seedling recruitment asses any effects The species’ area occupancy 1.6 km2 extent occurrence 337 km2, 29 patches 16 between 705 1,125 m altitude, was be 531,605. Quarrying, overgrazing afforestation negatively affected species, this order. recommend subspecies categorized as Vulnerable on IUCN Red List. A species recovery plan required, ecological restoration altered areas would mitigate negative improve overall conservation habitats.