Trump’s border-wall pledge threatens delicate desert ecosystems

Ecologists fear plan to seal off the United States from Mexico would put wildlife at risk.

With Republican presidential candidate Donald Trump talking about walling off the United States from Mexico, ecologists fear for the future of the delicate and surprisingly diverse ecosystems that span Mexico’s border with the southwestern United States.

“The southwestern US and northwestern Mexico share their weather, rivers and wildlife,” says Sergio Avila-Villegas, a conservation scientist from the Arizona-Sonora Desert Museum in Tucson. “The infrastructure on the border cuts through all that and divides a shared landscape in two.” Read more in Nature.