- Invasive Plant Atlas of New England (website)
Source: EDDMapS - Database of Aquatic Invasives in the Northeast – with color photos (website)
Source: Northeast Aquatic Nuisance Species Panel - Freshwater Aquatic Invasive Species in Rhode Island (PDF)
Source: RI Department of Environmental Management
- Fact sheet on the Asian Longhorned Beetle (PDF)
Source: RI Department of Environmental Management - RI Invasive Species Portal (website)
Source: Rhode Island Natural History Survey - Invasives Preparedness for Land Conservation Organizations, a presentation by Hope Leeson and David W. Gregg at the 2007 Land and Water Conservation Summit (PDF)