a plant or animal species that has established itself in a habitat in which it is not native. Kame: a short ridge or mound of sand and gravel that was deposited as glaciers melted.
nonnative plant and/or animal species introduced into a region that then overwhelm and crowd out native species, degrade habitats, and contaminate the gene pools of indigenous species
A species of plant or animal that is not native to (i.e., did not evolve in) an area; e.g., exotic species.
Species that spread rapidly and quickly dominate habitats in which they occur, often out-competing or even eliminating other species.
a species that is brought into an area, usually by human movement, and begins to out compete native species.
A species that is not native to an environment, but was introduced from outside the ecosystem. Invasive species often spread throughout an environment, using up resources and choking out native species.
species not native to a habitat, that compete with native species for food and space and typically cause economic and/or environmental harm.
An alien species whose introduction does or is likely to cause economic or environmental harm or harm to human health. [from Executive Order 13112 on Invasive Species
usually a non-native species that is highly successful in a new habitat and whose presence is significantly detrimental to other species.
An alien species whose introduction does, or is likely to, cause economic or environmental harm or harm to human health. Example: tui chub.
foreign plants that alter the balance of local plants and animals.
an introduced species that destroys or displaces a native species
a nonindigenous species whose introduction causes, or is likely to cause, harm to the economy, environment, or human health
a non-native plant or animal that is harming or is likely to harm the environment, economy or human health
an organism introduced through huma
a plant or animal species that is not native to the local ecosystem, takes over large areas, and reduces biodiversity in ways that often cause economic or environmental harm
a species that has certain biological characteristics that allow for rapid colonization and population growth
Species that, once established, is difficult to get rid of. They are often exotic, but there are native invasive species as well.
A species that is nonnative to an ecosystem, and whose introduction causes economic or environmental harm or harm to human health.
Non-native species which tend to spread and dominate areas, replacing native species and are difficult to remove. For example Rhododendron spreads rapidly in woodlands, do not allow anything else to grow under them and are very difficult to permanently remove.
species that enter into new ecosystems and spread, causing damage to native species and their habitats.
Non-native species of plants or animals that out-compete native species in a specific habitat. Jump to Top
An animal or plant that has a profound and negative impact on an ecosystem.
a plant or wildlife species that dominates an ecosystem to the point that habitat diversity is compromised Return to Previous Page.
a species that has been transported by natural processes or human activities, either intentionally or accidentally, into a region where it did not occur previously, and reproduces and spreads rapidly into new locations, causing economic or environmental harm or harm to human health (from Executive Order 13112 on Invasive Species).
an organism introduced into a region that then damages the region's ecosystem
A subcategory of nonnative plants that aggressively invade natural plant communities and displace native plants or less aggressive weedy plants. Examples of invasive species in Santa Clara County wetland and riparian areas are broad-leaf peppergrass ( Lepidium latifolium) and giant reed ( Arundo donax).
A species that causes harm to communities or ecosystems that it is not a native of. This harm can be ecological, economic, or even a threat to human health.
Alien (non-native) species of plants, animals, and pests whose introduction causes or is likely to cause economic or environmental harm or harm to human health. Executive Order 13112, issued February 8, 1999, seeks to prevent the introduction and minimize the impacts of invasive species through better federal agency coordination under a National Invasive Species Management Plan to be developed by an interagency Invasive Species Council. Examples of invasive species receiving recent attention include the Asian long-horned beetle, Africanized honeybees, zebra mussels, and the Formosan termite.
an alien species whose introduction does or is likely to cause economic or environmental harm or harm to human health, as defined by the Department of Agriculture.
a species occurring as a result of human activities beyond its accepted normal distribution and which threatens valued environmental, agricultural or personal resources by the damage it causes
species that are not native to an area and whose introduction causes or is likely to cause economic or environmental harm or harm to human health. (See also nonnative species.)
An introduced species that takes over an area and chokes out the native species
species not endemic to a habitat, that competes with native species for food and space, and typically causes economic and/or environmental harm. See alien species.
A plant or animal, not native to a region. It does not have any predators in that region to keep its population in check. This species will spread rapidly and take over native habitat, reducing biodiversity.
organisms that spread, encroach upon, and take over the habitat of native species.
organisms that have been moved to an area outside their natural range via human-mediated transport (also â€œexoticâ€ or â€œalienâ€ species)
Invasive species are non-native (exotic) species which, when planted or introduced, may spread vegetatively or become naturalized, often outcompeting native species and degrading natural habitats and communities in the process.
An introduced species that out-competes native species for space and resources. Scotch Broom is an invasive species that out-competes local vegetation and results in a monoculture, and hence a decrease in local diversity. See also introduced species, native species. Invertebrate: All animals other than those in the phylum Chordata; lower metazoans. They do not possess a notochord or vertebral column. Examples are worms, corals, sponges, etc. The protochordates are sometimes called higher invertebrates.
A species that does not naturally occur in a specific area and whose introduction does or is likely to cause economic or environmental harm or harm to human health.
Animals, plants, and pathogens non-native to a country or region that threaten native forms of life in that region. Lethal Management Methods/Techniques Wildlife damage management methods that result in the death of animals (e.g., M-44s, aerial shooting, calling and ground shooting, and denning).
a species that has moved into an area and reproduced so aggressively that it has replaced some of the original species.
Species of plants or animals not native to a region that have been introduced.
A species, usually exotic, that ha...
The term invasive species refers to a subset of those species defined as introduced species or non-indigenous species. Invasive species can alter ecological relationships among native species and can affect ecosystem function, economic value of ecosystems, and human health. A species is regarded as invasive if it has been introduced by human action to a location, area, or region where it did not previously occur naturally (i.e., invasive), becomes capable of establishing a breeding population in the new location without further intervention by humans, and spreads widely throughout the new location.