10.6084/m9.figshare.3512906.v1 Christopher Costello Christopher Costello John M. Drake John M. Drake David M. Lodge David M. Lodge Appendix A. Shipping traffic (number of vessels) in the Great Lakes from 1959 to 2000. Wiley 2016 nonindigenous species ballast water environmental policy invasive species NIS maximum likelihood Environmental Science Ecology 2016-08-04 09:42:05 Dataset https://wiley.figshare.com/articles/dataset/Appendix_A_Shipping_traffic_number_of_vessels_in_the_Great_Lakes_from_1959_to_2000_/3512906 Shipping traffic (number of vessels) in the Great Lakes from 1959 to 2000.