Brazilian Waterweed Resources
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Alberta Invasive Species Council (Canada).
See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act
Pennsylvania State University. Pennsylvania Sea Grant.
See also: Aquatic Invasive Species: Resources for additional species information
Rhode Island Department of Environmental Management. Office of Water Resources.
See also: Aquatic Invasive Plants for species of concern
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
California Invasive Plant Council.
Business Queensland (Australia).
King County Department of Natural Resources (Washington). Water and Land Resources Division.
Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.