US national parks are becoming isolated 'habitat islands,' but linking them with corridors could help conserve wildlife.
“We believe this probably would be the most beneficial protection of lands to protect large mammal communities of any place in the US,” says, lead author of the study and a conservation biologist at the Natural History Museum of Utah. “So this should definitely be a priority for the Biden administration’s efforts to protect 30 percent of all lands.”
After conceptualizing these two protected area networks, they then calculated how rapidly medium and large mammals larger than about a pound in size would disappear in the networks compared to their individual parks. The persistence time, or the length of time that a species will survive in a habitat fragment like a national park, by 4.3 in a hypothetical network that incorporates not only the parks, but also the corridors, adjacent wilderness areas and known migratory routes.
“We’ve known that larger patches of habitat support more species for longer periods of time than smaller patches, and practically this means that animals in isolated parks and reserves will eventually go extinct,”
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