Catastrophic declines in wilderness areas undermine global environment targets

Humans have altered terrestrial ecosystems for millennia, yet wilderness areas still remain as vital refugia where natural ecological and evolutionary processes operate with minimal human disturbance, underpinning key regional- and planetary-scale functions. Despite the myriad values of wilderness areas—as critical strongholds for endangered biodiversity, for carbon storage and sequestration, for buffering and regulating local climates, and for supporting many of the world’s most politically and economically marginalized communities—they are almost entirely ignored in multilateral environmental agreements. This is because they are assumed to be relatively free from threatening processes and therefore are not a priority for conservation efforts. Here we challenge this assertion using new comparable maps of global wilderness following methods established in the original “last of the wild” analysis to examine the change in extent since the early 1990s.

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