oa Quest - Risk assessment - a key tool for reducing the incidence and impacts of invasions : feature - science in practice

Volume 11, Issue 2
  • ISSN : 1729-830X



Most alien species are introduced to a new area because they provide some sort of benefit for at least part of society. Mammals, reptiles and birds are often introduced as pets, attractive plants as garden plants, and trees to provide building material. Alien species are also crucial for the survival of humankind, considering that most crops and livestock used worldwide are not native to most parts of the planet where they are grown. However, we need to keep in mind that some alien species are not beneficial to the environment and economy where they are introduced, and in some cases the damage they do is greater than the benefit they were introduced for.

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