Databases

Ballast Water: Smithsonian Environmental Research Center
http://invasions.si.edu/NBIC/ballast.html

United States Geological Survey: Nonindigenous Aquatic Species (NAS) Information Resource
http://nas.er.usgs.gov/

International Nonindigenous Species Database Network
http://www.nisbase.org/nisbase/index.jsp

ANS Example

(Eriocheir sinensis)

Poses a potential threat to native invertebrates and to the ecological structure of freshwater and brackish estuarine communities