14 Invasive Species Tribal treaty programs address both aquatic and terrestrial invasive species. They involve prevention, eradication, mitigation, rapid response, and public outreach efforts. Their goal is to protect native species and habitats. Tribal programs coordinate their work with federal, state, local, and international counterparts. Tribes are especially concerned about invasive species that disproportionately affect treaty resources, such as: phragmites that threatens wild rice; sea lamprey that threatens lake trout; spiny water fleas, zebra mussels, and rusty crayfish that threaten walleye; and garlic mustard that threatens a wide range of plants used for subsistence, ceremonial and medicinal purposes. Non-native Atlantic sea lamprey remain a significant source of mortality for lake trout and other species in the Great Lakes. A lamprey can kill up to 40 pounds of fish, significantly hurting both sport and commercial fisheries. Tribes and inter- tribal commissions partner with federal, state, and Canadian governments to implement a joint plan to combat sea lamprey. Non-native phragmites is spreading into the ceded territories. It threatens wild rice, native plant communities, and wildlife habitat in wetlands and along shorelines. Tribal biologists extensively survey lakes, streams, and phragmites dispersal vectors. They report new occurrences and initiate rapid response activities with federal, state, and local partners.