The proposed conservation system, the Sky Islands Wildlands Network (SIWN), encompasses about 17.3 million acres and extends from the Mogollon Rim in east-central Arizona and west-central New Mexico south to the northern Sierra Madre Occidental mountains in Chihuahua and Sonora, Mexico.
A Wildlands Network is a proposed complex of cores, linkages, and compatible use zones in an ecologically defined area, thus the Sky Islands Wildlands Network (SIWN) has been designed based on rewilding (a scientific approach to protecting and restoring native ecosystems and large wilderness) and focal species planning (identification of species important to maintaining ecologically healthy conditions).
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