Zone de Texte: « Invasive plants » according to CRONK ? FULLER (1996) = « Transformers » according to RICHARDSON ? al. (2004) = « alien plants spreading naturally (without the assistance of people) in natural or semi-natural habitats, to produce a significant change in terms of composition, structure or ecosystem processes » CRONK ? FULLER (1996) = « species which are able to change the characteristics over large areas » Zone de Texte: The need for common definitions

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