Trees and shrubs as invasive alien species – a global review

  title={Trees and shrubs as invasive alien species – a global review},
  author={David M. Richardson and Marcel Rejm{\'a}nek},
  journal={Diversity and Distributions},
Aim  Woody plants were not widely considered to be important invasive alien species until fairly recently. Thousands of species of trees and shrubs have, however, been moved around the world. Many species have spread from planting sites, and some are now among the most widespread and damaging of invasive organisms. This article presents a global list of invasive alien trees and shrubs. It discusses taxonomic biases, geographical patterns, modes of dispersal, reasons for introductions and key… 

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