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DOWNLOAD THE GREY SQUIRREL REVIEW

Download in full (2.5 MB)

FOREWORD & INTRODUCTION (375 KB)

1. SQUIRREL ECOLOGY (157 KB)

  • Grey squirrel (Sciurus carolinensis) ecology
  • Energy requirements
  • Red squirrel (Sciurus vulgaris L) ecology
  • Genetic variation
  • Behaviour
  • Forest Design Plans

2. SQUIRREL POPULATION TRENDS (395 KB)

  • Italy
  • Ireland
  • Britain
  • Densities
  • Spread of grey squirrel

3. FATE OF THE RED SQUIRREL (182 KB)

  • Ecological competition and replacement
  • Competitive exclusion
  • Woodland fragmentation
  • Co-habitation?
  • Disease

4. ENVIRONMENTAL & ECONOMIC DAMAGE BY THE ALIEN GREY SQUIRREL (1.15 MB)

  • Tree damage
  • Squirrel damage to young trees
  • Measuring damage scales
  • The effect of squirrel damage on timber value
  • Other effects of squirrel damage

5. CONTROL METHODS (190 KB)

  • Predicting damage
  • Bark-stripping and woodland design
  • Damage control
  • The effectiveness of squirrel control
  • Costs of bark-stripping and squirrel control
  • Density of hoppers

6. QUANTIFICATION AND FINANCIAL IMPLICATIONS OF GREY SQUIRREL DAMAGE (263 KB)

  • Data on the extent of damage
  • Estimates of the costs of grey squirrel damage
  • Bark-stripping
  • Value of crops at risk
  • Estimates of the costs of grey squirrel control
  • Individual examples
  • Forestry Commission statistics
  • The National Forest