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Nature 417, 32-33 (2 May 2002) | doi:10.1038/417032a

Plant population biology: How to be invasive

Wim H. Van der Putten

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Few clear answers have emerged from studies of the factors determining abundance of plants in particular settings. A new idea invokes the differing susceptibility of plant roots to damage from pathogenic soil microorganisms.

Why, in any particular ecosystem, are some plant species rare and others common? And why are some species highly successful in invading new territories whereas others never make it outside their own specific habitat?