Testing will begin this shipping season, which is officially marked by today s re-opening of the St. Lawrence Seaway . In addition, ship owners and operators are working to improve ballast water management practices. It reflects the passion for this splendid resource that is shared by all residents. We will continue leading the way in finding regional solutions to the ecological and economic threats posed by non-native aquatic species, strengthening our resolve to protect the Great Lakes. It is part of Michigan s aggressive record of leadership on this issue that includes last year s call by Engler to the Council of Great Lakes Governors for the creation of a regional task force, which he chairs.
Ballast discharges are a recognized vector of introduction for aquatic nuisance species.
The workgroup has concluded that the only practical methods currently available for controlling invasive species in ballast water are the use of biocides and best management practices. Management practices include methods of taking on ballast water that minimize the amount of sediment and biological material in the water, such as avoiding taking ballast from near-shore areas, or from areas where ship propellers may stir up sediment. Biocides are chemicals added to ballast water that kill the organisms. Experimental treatments include ion technology, chlorine and other compounds. Fednav will provide a vessel to be used for the on-board experiments.