Border barriers, such as this along the USA-Mexico border, present an obstacle for many species whose ranges are shifting under climate change.
Border barriers, such as this along the USA-Mexico border, present an obstacle for many species whose ranges are shifting under climate change. Man-made borders like the USA-Mexico border wall could make it difficult for almost 700 mammal species to adapt to climate change. Our scientists have identified 32,000km of borders fortified with fences and walls that could potentially stop large numbers of animals from reaching more suitable environments. Ecologically damaging Borders between the USA and Mexico, China and Russia and India and Myanmar could be the most ecologically damaging. The USA-Mexico border wall alone could obstruct the movement of 122 mammal species displaced by climate change including the Mexican wolf, jaguar and jaguarundi. Mammals that could be obstructed by man-made borders across the world include leopards, tigers, the critically endangered Saiga antelope, and cheetah. Suitable habitats According to our researchers, a third of mammals and birds will need to find suitable habitats in other countries by 2070 due to climate change.
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