
Renowned for a thriving and intricately studied population of around 900 red deer, the Isle of Rum, part of Scotland’s Inner Hebrides, is often considered an outdoor laboratory for scientific research. But the earthworms on Rum are equally remarkable. These invertebrates act as “ecosystem engineers”, actively shaping the landscape, often after humans have left their mark on this remote island.
My investigations over 30 years have uncovered how people have influenced the current fragmented and uneven distribution, diversity and abundance of earthworms on this national nature reserve.