In some UK woodlands, every young tree has died. What’s going wrong?

With forests under pressure from drought, heat, disease and deer, a study has found fewer trees across a range of species surviving to maturity. But scientists say there is still hope

To the untrained eye, Monks Wood looks healthy and lush in the summer sun. Hundreds of butterflies dance on the edge of footpaths in the ancient Cambridgeshire woodland, which is rich with ash, maple and oak trees. Birds flit through the hedgerows as they feed. A fox ambles through a forest clearing, before disappearing into long grass.

But for a number of years, it has been clear to Bruno Ladvocat and Rachel Mailes that something is missing. In 2022, Ladvocat, Mailes and their research team from Birmingham University were out sampling when they noticed that the small trees that typically cover the woodland floor were increasingly hard to find.