Presented at the 8th European Vertebrate Pest Management Conference in Berlin, 26–30 September 2011.
Changes in the impact and control of an invasive alien: the grey squirrel (Sciurus carolinensis) in Great Britain, as determined from regional surveys†
Article first published online: 15 FEB 2013
Copyright © Crown copyright 2013. Reproduced with permission of Her Majesty's Stationery Office. Published by John Wiley & Sons, Ltd.
Pest Management Science
Special Issue: 8th European Vertebrate Pest Management Conference
Volume 69, Issue 3, pages 323–333, March 2013
How to Cite
Mayle, B. A. and Broome, A. C. (2013), Changes in the impact and control of an invasive alien: the grey squirrel (Sciurus carolinensis) in Great Britain, as determined from regional surveys. Pest. Manag. Sci., 69: 323–333. doi: 10.1002/ps.3458
- Issue published online: 15 FEB 2013
- Article first published online: 15 FEB 2013
- Accepted manuscript online: 3 JAN 2013 11:12AM EST
- Manuscript Accepted: 3 JAN 2013
- Manuscript Revised: 16 OCT 2012
- Manuscript Received: 21 SEP 2011
- grey squirrel;
- bark stripping;
The grey squirrel, Sciurus carolinensis Gmelin, was introduced into sites in England, Wales, Scotland and Ireland from the United States and Canada between 1876 and 1929. Soon after its introduction there were reports of damage to trees by seasonal bark stripping activity. Surveys in state and private forests since 1954 have monitored their distribution and impacts. Two surveys also gathered information on control efforts used to minimise damage. Grey squirrel population range has expanded significantly in Britain over the last 50 years and continues to do so. Survey results show high variability between years in damage recorded, consistent with the understanding that damage is triggered by high numbers of juveniles entering the population following a good breeding season. Results also show high variability between tree species in levels of damage recorded, but that thin-barked tree species are most at risk of damage from grey squirrels. Further, results show that the economic cost of damage can be high and that control measures will be ineffective if not appropriately targeted. The findings support suggestions that grey squirrels in mainland Europe should be eradicated to prevent future population expansion and any accompanying impacts on commercial timber crops. © Crown copyright 2013. Reproduced with permission of Her Majesty's Stationery Office. Published by John Wiley & Sons, Ltd.