Ports identified as having received ballast water from killer shrimp and golden mussel infested locations.
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The number of visits made by ships with potentially infested ballast water at each Great Lakes port was calculated from the NBIC data for 2004 to 2010 (Smithsonian Environmental Research Center and USCG, 2009).Ports identified as having received ballast water from killer shrimp and golden mussel infested locations.
创建时间：
2015-12-02
