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    Cañadas, E.M. Ballesteros, M. Foronda, A. Navarro, F.B. Jiménez, M.N. and Lorite, J. 2015. Enhancing seedling production of native species to restore gypsum habitats. Journal of Environmental Management, Vol. 163, p. 109.

    Ballesteros, Miguel Cañadas, Eva M. Foronda, Ana Peñas, Julio Valle, Francisco and Lorite, Juan 2014. Central role of bedding materials for gypsum-quarry restoration: An experimental planting of gypsophile species. Ecological Engineering, Vol. 70, p. 470.


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

  • Miguel Ballesteros (a1), Ana Foronda (a1), Eva María Cañadas (a1), Julio Peñas (a1) and Juan Lorite (a1)
  • DOI:
  • Published online: 01 April 2013

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

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