According to the [Convention on Biological Diversity], [in-situ] conservation (on site conservation) means the conservation of ecosystems and natural habitats and the maintenance and recovery of viable populations of species in their natural surroundings and, in the case of domesticated or cultivated species, in the surroundings where they have developed their distinctive properties; [ex-situ] conservation means the conservation of components of biological diversity outside their natural habitats.The techniques and facilities used for [ex-situ] conservation, are considered to be essential measures to support, complement and enhance [in-situ] conservation.