The EPA has relased a report, "Predicting Future Introductions of Nonindigenous Species to the Great Lakes" (website with downloads here).
Per the EPA's website:
This report predicts the spread of aquatic nonindigenous species into the Great Lakes to help resource managers focus monitoring activities on particular species at the most vulnerable U.S. Great Lakes ports. The report also demonstrates the use of a habitat suitability model and ballast water discharge data to predict invasion potential.
Most coastal states with international shipping traffic have struggled to grapple with the vexing problem of invasive species. Federal legislation and rulemaking have had fits and starts and several states have not waited for the federal government to act. Certainly an issue to watch in the future.
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