The most diverse place near my location (as far as plants are concerned) has nothing to do with heat or radiation. There's a small section of wilderness near where I live with far more plant species than any other area within thousands of miles. It's not the warmest or highest spot by any means. It turns out, due to it's location and geology, that as glaciers moved across the area they would naturally deposit some of the material they had picked up at this location (rocks, dirt, seeds, etc.). This led to it's rich soil and wide diversity of plant species (or so I've been taught).
It causes me to wonder if there could be another explanation for the biodiversity in these cloud top forests other than radiation.
Edited by DrFrost, : EDIT: Fixed syntax errors.
Edited by DrFrost, : Fixed mispelling (I really should have proofread this better the first time).