Wiktionary
n. (context ecology English) A species living outside its native distributional range.
Wikipedia
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.
The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.
Usage examples of "introduced species".
Two introduced species, the brown dog tick and the bush tick from Japan, can attack people, as can the Western Australian ornate kangaroo tick.
The sole representative of its genus in these islands, it is found wild in hedges and copses from York southwards, being only considered an introduced species in Scotland, and rare and not indigenous in Ireland.
Ten percent of introduced species survived, then ten percent of those became pests.
In turn, the introduced species have engaged in complex and fluctuating interactions as plant-herbivore-predator associations are worked out to fit the patterns of a world never quite like Earth.
Like the Kipuka Club, the estate was a thriving combination of native and introduced species.
None of the introduced species had survived: dogs or turkeys or llamas.
Ecological conditions are chaotic, as the introduced species eliminate the less-evolved natives and seek a new equilibrium.
Even introduced species like African oryx, a fivehundred-pound antelope from the Kalahari region, flourished here by the thousands.
Objectively, he recognized that he came from a time where human development, introduced species, and global warming had impoverished the biosphere.