Destroying the protective canopy of big trees can be catastrophic for wildlife and plants
Temperature records are compiled from selected sites, in the open, up to 2 metres off the ground. The equipment, in a ventilated box out of the sun, records the ambient air temperature. It is from thousands of these sites that we calculate how fast the climate is heating.
But everyone who goes outside on a hot day knows how the temperature can be several degrees lower under trees, and much cooler in a dense wood. This matters enormously to a vast quantity of creatures and plants that live close to the ground in the world’s woodland and forests, the most biodiverse places on Earth.