ScaleNet. Great Lakes Aquatic Nonindigenous Species Information System (GLANSIS) The Great Lakes have a long history of aquatic nonindigenous species (ANS) introductions – both intentional and unintentional.
As of 2012, over 180 nonindigenous species have been reported to have reproducing populations in the Great Lakes basin, i.e. lakes Superior, Michigan, Huron, St. Clair, Erie, Ontario, and their connecting channels and water bodies within their respective drainages (Mills et al. 1993, Ricciardi 2001, Ricciardi 2006, Ricciardi unpubl. data). The two most recent ANS reported and verified established in the Great Lakes basin were Hemimysis anomala and Procambarus clarkii (fact sheet pending review). The number of Great Lakes aquatic nonindigenous species documented in GLANSIS must be interpreted as a minimum. Identification depends on our ability to find, recognize, verify, and document new species, which is, in turn, dependent on our ability to adequately sample the Great Lakes ecosystem.
MIPN Invasive Plant Control Database (US MidWest) USGS Nonindigenous Aquatic Species. SERC NEMESIS: National Exotic Marine and Estuarine Species Information System. Center for Invasive Species & Ecosystem Health. SERC Nonindigenous Species Database Network. Federal Noxious Weed Disseminules of the U.S.