Gloucestershire Wildlife Trust is preparing for the effect of ash dieback at Lower Woods nature reserve.
Lower Woods, near Wickwar, is one of the largest ancient woodlands in the south-west of England, at just under 300 hectares, is a Site of Special Scientific Interest (SSSI). There is evidence that it was managed as a woodland 2,000 years ago, when the Romans occupied the area.
Ash trees are one of the most common species in Lower Woods, accounting for up to 70% in many areas of the woodland.