Ponto-Caspian gammarids: Exchanging ballast water
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
Background information and definitions
Many freshwater invaders can be transported across oceans within the ballast water of ships. By exchanging ballast water collected at one freshwater port with salty ocean water during the journey, the chance of transporting live organisms to other freshwater ports is reduced. A study on the Laurentian Great Lakes has identified that possible non-compliance with a ballast exchange law prior to entering the lakes has facilitated repeated introductions of invasive shrimps (Hänfling et al. 2011).
Hänfling B., Edwards F. & Gherardi F. (2011) Invasive alien Crustacea: dispersal, establishment, impact and control. BioControl, 56, 573-595.