date:Apr 08, 2014
Preventing the next global hitchhiker will require vigilance. Mr Strayer stressed that: Our $277 million dollar estimate is extremely conservative. Right now there is very little research on impacts to freshwater shipping, recreation, and irrigation, or the costs associated with altered freshwater habitat or for biofoulers other than animals. We fully expect the number to rise.
Recommendations include research into understudied freshwater biofoulers, such as sponges and insects, as well as a