by Faith Campbell
Importation of invasive species is an intrinsic risk of
international trade. As trade volumes rise, so do introductions.
Preventing introductions is widely recognised as preferable to
responding after they occur. Prevention measures require exporters and
importers, as well as national governments and trade-promoting and
managing entities such as the World Trade Organization, to implement
steps aimed at ensuring that the exchange of goods is not accompanied by
the dispersal of damaging organisms.