Issues related to ship-mediated introductions of aquatic invasive species have, and continue to be, a significant item of discussion at the International Conference on Aquatic Invasive Species:

2003 International Aquatic Invasive Species Conference shipping abstracts

2004 International Aquatic Invasive Species Conference shipping abstracts

List of Alien Species Introduced into the Great Lakes and the St. Lawrence River
(source: Yves de Lafontaine, Environment Canada, St. Lawrence Centre)

Draft Bibliography of Ballast Water Research