Heatwaves: why British trees are shedding branches and dying

By Glyn Barrett, Lecturer in Ecology and Evolutionary Biology, University of Reading

If you visit the Royal Botanic Gardens at Kew, on the edge of London, you will see a brightly painted skeleton of a dead oak tree. The tree, known as the climate changed oak, succumbed in the heatwave of 2022. Instead of removing it, Kew left it in place as a reminder that climate change is already taking its toll on Britain’s trees.

The 2022 heatwave killed 400 of Kew’s trees and predictions show that up to 50% of Kew’s existing 11,000 trees could be vulnerable to climate…

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