IUCN threat status:

Critically Endangered (CR)

Distribution

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Range Description

Diplotaxis siettiana is endemic to the Spanish island of Alborán (Almeria). This species was last seen in 1974, when seeds were fortunately collected before the species disappeared from the island. A reintroduction in 1999 appears to have been successful, although given extreme population fluctuations each year, more time is needed to ensure that the reintroduced population is self-sustaining. For the moment, it is believed to be possibly extinct in the wild.

Alborán is the top of a volcanic platform situated between Spain and Morocco, around 50 km from the nearest continent. This small island (600 m x 200 m) resembles an aircraft carrier due to its flat surface, reaching 10 m above sea level and surrounded by steep, almost vertical cliffs. The island has a lighthouse and is now used as a military base. In 1974 the plant was found growing in a tiny area around the helicopter platform. The area of occupancy (AOO) is less than 2 km² and the extent of occurrence (EOO) is 0.0712 km² which is the size of the island.

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© International Union for Conservation of Nature and Natural Resources

Source: IUCN

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