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Examples of Invasive Alien Species

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Title: Ailanthus altissima (Chinese sumac)
Description: Ailanthus altissima is a very aggressive plant, a prolific seed producer (up to 350,000 seeds in a year), grows rapidly, and can overrun native vegetation. It also produces toxins that prevent the establishment of other plant species. The root system is aggressive enough to cause damage to sewers and foundations. (Credit: Global Invasive Species Database)
Date: 2009-02-12
Credits: Dr Laszlo DVARDY

  • United Nations
  • United Nations Environment Programme