As the climate changes over the next century, the ranges of nearly 90 percent of mammal species will shrink — in many cases because animals won’t be able to get to areas where the climate is going to become suitable for them, says new research.

Across the Western Hemisphere, the study also found, nearly 10 percent of mammals will be unable to move fast enough to keep up with changes in climate. In some areas, such as the Amazon, that number will be as high as 40 percent.

And while some animals will do just fine or even better than before, certain animals in certain places face catastrophic losses of survivable habitat. Most at risk are primates, which will likely lose 75 percent of their range because of both inhospitable climate and the inability to get to livable places.