Ex situ management as insurance against extinction of mammalian megafauna in an uncertain world.

Conservation Biology : the Journal of the Society for Conservation Biology
Mohammad S FarhadiniaDavid W Macdonald

Abstract

The persistence of endangered species may depend on the fate of a very small number of individual animals. In situ conservation alone may sometimes be insufficient. In these instances, the International Union for Conservation of Nature provides guidelines for ex situ conservation and the Convention on Biological Diversity (CBD) indicates how ex situ management can support the CBD's objectives by providing insurance policies for species. The circumstances that justify its use are uncertain. To evaluate the current in situ extinction risk and ex situ management of 43 critically endangered species of mammalian megafauna, we used nonmetric multidimensional scaling and geopolitical variables related to governance, economics, and national policy within their extant ranges. We then fitted generalized additive models to assess the contribution of each variable to the ordination. Fifteen (almost one-third) of the world's terrestrial mammalian megafauna are not the subject of any ex situ management. Seventy-three percent of these taxa occur in areas characterized by political uncertainty, such as border zones or areas affected by armed conflicts, mainly in Africa and the Middle East. A further 23% of taxa in ex situ programs do not meet ...Continue Reading

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Citations

Jan 14, 2021·Scientific Reports·Carlos Iglesias PastranaMaría Teresa Abelló
Jun 24, 2021·Conservation Biology : the Journal of the Society for Conservation Biology·Mohammad S FarhadiniaDavid W Macdonald
Jun 24, 2021·Conservation Biology : the Journal of the Society for Conservation Biology·Leili KhalatbariSarah M Durant

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