Table 3. Individual distant effects of a tree
Factor (and suggested score)Score assigned
Flood prevention
Drainage system subject to flooding (5)*
Not subject to floods (e.g., sand dunes) or floods of no consequence (1)
Reservoirs or lakes downstream (5)
No pools downstream (1)
Animal visitors
Tree used by migrating or transient animals (5)
No temporary animal usage likely (1)
  • * Compromise situations may be scored at values between 1 and 5