Invasive species
GlobalChange.gov Glossary
Glossary and Key Word List
Definition: A non-native organism whose introduction within a particular ecosystem causes or is likely to cause economic or environmental harm, or harm to human, animal, or plant health.
Invasive Species
Ecological Risk Assessment Glossary of Terms
Glossary and Key Word List
Definition: These are species that are imported from their original ecosystem. They can out-compete native species as the invaders often do not have predators or other factors to keep them in check. The zebra mussel is an example of an invasive species in the Great Lakes.
Invasive species
Student's Guide to Global Climate Change
Glossary and Key Word List
Definition: A type of plant, animal, or other organism that does not naturally live in a certain area but has been introduced there, often by people. An invasive species can spread quickly, especially if it has no natural predators in its new home. An invasive species can hurt native species, disrupt ecosystems, and create problems for people (for example, weeds and insects that damage crops).
invasive species
Report on the Environment (ROE) Glossary
Glossary and Key Word List
Definition: A non-indigenous plant or animal species that can harm the environment, human health, or the economy.
invasiveness
Thesaurus of Terms Used in Microbial Risk Assessment
Thesaurus
Definition: Degree to which an organism is able to spread through the body from a focus of infection. [CancerWeb 2005]
Invasiveness
Environmental Sampling and Analytical Methods (ESAM) Program Glossary
Glossary and Key Word List
Definition: The ability to degrade and migrate through the extracellular matrix.[Thesaurus of Terms Used in Microbial Risk Assessment]
Alien Invasive
EPA EV-Biological Substances-Plants-Plant Roles
Taxonomy
Definition: Invasive species of plants not native to a region which, when introduced either accidentally or intentionally, cause economic or environmental harm or harm to human health.
Invasive Animal Species
EPA EV-Biological Substances-Animals-Animal Roles
Taxonomy
Definition 1: An (animal) species that is brought into an area, usually by human movement, and begins to out compete native species. [USGS Coastal Prairie Region Glossary of Terms] Definition 2: With respect to a particular ecosystem, any species that is not native to that ecosystem, and whose introduction does or is likely to cause economic or environmental harm or harm to human health.[40 CFR 166.3 (CFR 2013)] Definition 3: Non-indigenous plant or animal species that can harm the environment, human health, or the economy. [Report on the Environment (ROE) Glossary]
Invasive Management
EPA EV-Biological Substances-Humans-Human Activities & Behaviors
Taxonomy
Definition: The implementation of control measures to prevent the spread of invasive species or lessen their impacts when they appear to be permanently established. Control and management of invasive species encompasses diverse objectives such as eradication within an area, population suppression, limiting spread, and reducing effects. Complete eradication is not generally feasible for widespread invasive species or where adequate control methods are not available. Integrated pest management (IPM) is a sustainable approach to managing pests by combining biological, cultural, physical, and chemical tools in a way that minimizes economic, health, and environmental risks. Consideration of cumulative environmental impacts requires that environmentally sound methods be deployed, especially in vulnerable areas. [Office of the President Council on Environmental Quality Guidance for Federal Agencies on Sustainable Practices for Designed Landscapes at https://www.whitehouse.gov/sites/default/files/microsites/ceq/recommendations_on_sustainable_landscaping_practices.pdf]
Invasive Plant Species
EPA EV-Biological Substances-Plants-Plant Roles
Taxonomy
Definition 1: A (plant) species that is brought into an area, usually by human movement, and begins to out compete native species. [USGS Coastal Prairie Region Glossary of Terms] Definition 2: Plants that are not part of (exotic) or a minor component of (native) the original plant community or communities that increase above what’s expected given the normal range of variability of a site. [DOI Bureau of Land Management Interpreting Indicators of Rangeland Health: Glossary at http://www.blm.gov/nstc/library/pdf/1734-6.pdf] Definition 3: A plant species must interfere with management goals to be considered invasive. A nonnative species is not invasive simply because it is present in a wildland ecosystem; it must also have impacts on the ecosystem that interfere with attainment of management objectives. Fire-related impacts of nonnative invasive plants may include changes in the species composition or structure of postfire plant communities, especially when these changes occur at the expense of native species, and changes in fuel properties that alter fire behavior or fire regimes. [USDA Forest Service Fire Effects Information System Glossary at http://www.fs.fed.us/database/feis/glossary] Definition 4: With respect to a particular ecosystem, any species that is not native to that ecosystem, and whose introduction does or is likely to cause economic or environmental harm or harm to human health.[40 CFR 166.3 (CFR 2013)] Definition 5: Non-indigenous plant or animal species that can harm the environment, human health, or the economy. [Report on the Environment (ROE) Glossary]
Invasive Species
EPA EV-Biological Substances
Taxonomy
Definition 1: With respect to a particular ecosystem, any species that is not native to that ecosystem, and whose introduction does or is likely to cause economic or environmental harm or harm to human health. [40 CFR 158.1701 (2022)] Definition 2: A non-native organism whose introduction within a particular ecosystem causes or is likely to cause economic or environmental harm, or harm to human, animal, or plant health.
Native Invasive
EPA EV-Biological Substances-Plants-Plant Roles
Taxonomy
Definition: A native plant that has migrated to a site where it was not a part of the original plant community, or a native plant that because of management or other changes is now increasing beyond its original composition on the site. [DOI Bureau of Land Management Interpreting Indicators of Rangeland Health Glossary at http://www.blm.gov/nstc/library/pdf/1734-6.pdf] 
