Management of non-native or invasive vertebrates

Species being researched

As we do not have the resources to work on all species simultaneously and some have good advisory material based on previous research, current research concentrates on a few species:

Research aims

  • To provide evidence based expertise, information, advice and pragmatic guidance on the impacts and management of woodland based invasive vertebrate species.
  • To investigate and improve on efficacy of current management techniques and delivery options.
  • To investigate novel control methods especially if appropriate for several species.
  • To contribute to public debate on non-native and invasive species and the consequences of action/inaction.
  • To contribute to national Risk Assessments for woodland dwelling invasive species under the Defra NNS scheme. 

Selecting species for research

Invasive or non-native woodland vertebrates may be widespread or currently localised but have potential to increase and spread along tree lined landscape corridors in response to climate change accompanied by unacceptable impacts on trees and woodland biodiversity. The risk posed by both non-native and invasive species is evaluated from national and international information on:

  • Recent evidence of, or potential for spread
  • Biodiversity impacts
  • Damage to growing trees, either indirectly or directly
  • Public, health and safety or disease issues.

Resources on other species


Dr Robin Gill

Or for information specifically about grey squirrels:

Mark Ferryman