Assessing impact of beavers

A tree felled by a beaver in Wigierski National Park, Poland Photo: Richard Ferris

In 2003 Scottish Natural Heritage commissioned Forest Research to test methods of monitoring the impact of beavers on woodland vegetation in the re-introduction site in Knapdale, Scotland. The methods provide an assessment of damage by beavers as well as by deer that may browse the re-growth of trees that beavers have felled.


The report describes a field test of a method as well as suggesting improvements to the methods and approaches to undertaking full-scale monitoring.

Armstrong, H. M., Poulsom, L., Simson, P., Wilson, J and Tracy D. (2003). Testing methods for monitoring beaver impacts on terrestrial vegetation in Knapdale. Scottish Natural Heritage Commissioned Report. 50 pp. Scottish Natural Heritage, Battleby.

For further information

Related publications

SNH Scottish Beaver trial pages




Dr Robin Gill