Introduction to Aquatic Invasive Species
Aquatic invasive species (AIS) are non-native plants and animals that have been introduced (accidentally or intentionally) into lakes and rivers, and whose introduction threatens the diversity or abundance of native species, the stability of the ecosystem and/or the use of the infested water body. AIS are a major threat to our freshwater ecosystems and a significant management concern because of their ecological and socio-economic costs.
Effects of Aquatic Invasive Species
Ecological Costs
- Loss of beneficial native species
- Decreased biodiversity
- Changes in fish and wildlife habitat
- Disruption of local food web stability
- Degradation of water quality
Recreational Losses
- Interference with recreational uses such as swimming, paddling, boating and fishing
- Alteration of sport fish habitat and reduced fishing opportunities due to stressed fish communities
Economic Impacts
- Damage to infrastructure (such as clogging dam gates, canals and irrigation or other intake pipes)
- AIS management and control costs substantial amounts of money
- Nuisance conditions may reduce waterfront property values
- Fewer recreational opportunities may impact tourism and affect businesses in the community
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RI Marine and Estuarine Invasive Species Site
New England Aquatic Nuisance Species Panel
Aquatic Nuisance Species Task Force
National Invasive Species Information Center
USGS Nonindigenous Aquatic Species
Protect Your Waters
Invasive Plant Atlas of New England
Identification and Management of Aquatic Invasive Species
Identifying Freshwater Aquatic Invasive Species in Rhode Island
Aquatic Invaders in RI- Findings from DEM AIS Surveys
State Contacts for Lakes and Ponds
Map of AIS in RI by Town
RI Invasive Species Management Plan
2012 RI Lakes Report
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