Study: Quarter of Cacti Could Lose 80% Habitat

A study of nearly 1,000 cactus species across the Americas finds that climate forecasts relying on average temperatures and rainfall underestimate the dangers of climate change because they often omit severe drought. Including drought projections improved the models for most species, and more than a quarter could lose at least 80% of their suitable habitat by the end of the century, potentially pushing some into the critically endangered category. Losses may be especially severe in cactus-rich areas of Chile, Peru and northeastern Brazil; saguaros and other species in the Southwest also face growing risks from extreme heat and drought. Researchers warn that declining cacti could disrupt ecosystems because animals depend on them for food and shelter.