1967 warning on tropical mountains trapping species confirmed by beetle study

Imagine yourself living on a mountaintop where the climate has been almost unchanged for thousands of years. Life evolves with amazing precision; generation after generation adjusts to cool , predictable temperatures. But then the world starts to warm. The mountain that was once a refuge slowly transforms into a trap, and its inhabitants are left with no cooler refuge.“This could happen,” warned renowned ecologist Daniel Janzen nearly six decades ago, states a report published by Phys Org. In a seminal paper in 1967, he argued that tropical mountain species, which are adapted to stable climates, would find it much harder to cope with rising temperatures than species from more variable environments. It was a bold ecological theory in those days. Now scientists studying tiny rove beetles in Costa Rica have found compelling evidence that his prediction was eerily on target, nearly 60 years later.