Send to

Choose Destination
Science. 2000 Oct 20;290(5491):521-3.

Invasive plants versus their new and old neighbors: a mechanism for exotic invasion.

Author information

Division of Biological Sciences, The University of Montana, Missoula, MT 59812, USA.

Erratum in

  • Science 2000 Dec 15;290(5499):2075b.


Invading exotic plants are thought to succeed primarily because they have escaped their natural enemies, not because of novel interactions with their new neighbors. However, we find that Centaurea diffusa, a noxious weed in North America, has much stronger negative effects on grass species from North America than on closely related grass species from communities to which Centaurea is native. Centaurea's advantage against North American species appears to be due to differences in the effects of its root exudates and how these root exudates affect competition for resources. Our results may help to explain why some exotic species so successfully invade natural plant communities.

[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for HighWire
Loading ...
Support Center