Wilderness areas halve the extinction risk of terrestrial biodiversity

Moreno Di Marco (), Simon Ferrier, Tom D. Harwood, Andrew J. Hoskins and James E. M. Watson
Additional contact information
Moreno Di Marco: Dutton Park EcoSciences Precinct
Simon Ferrier: Black Mountain Laboratories
Tom D. Harwood: Black Mountain Laboratories
Andrew J. Hoskins: James Cook University
James E. M. Watson: The University of Queensland

Nature, 2019, vol. 573, issue 7775, 582-585

Abstract: Abstract Reducing the rate of global biodiversity loss is a major challenge facing humanity1, as the consequences of biological annihilation would be irreversible for humankind2–4. Although the ongoing degradation of ecosystems5,6 and the extinction of species that comprise them7,8 are now well-documented, little is known about the role that remaining wilderness areas have in mitigating the global biodiversity crisis. Here we model the persistence probability of biodiversity, combining habitat condition with spatial variation in species composition, to show that retaining these remaining wilderness areas is essential for the international conservation agenda. Wilderness areas act as a buffer against species loss, as the extinction risk for species within wilderness communities is—on average—less than half that of species in non-wilderness communities. Although all wilderness areas have an intrinsic conservation value9,10, we identify the areas on every continent that make the highest relative contribution to the persistence of biodiversity. Alarmingly, these areas—in which habitat loss would have a more-marked effect on biodiversity—are poorly protected. Given globally high rates of wilderness loss10, these areas urgently require targeted protection to ensure the long-term persistence of biodiversity, alongside efforts to protect and restore more-degraded environments.

Date: 2019
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DOI: 10.1038/s41586-019-1567-7

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