Allochoria (from ancient Greek ἄλλος - another and χῶρος - place) is the dispersal of organisms outside their natural habitat.
The phenomenon of allochory is widespread in nature. It can occur either naturally (for example, through passive transfer of seeds by wind or water) or due to human activity.
The introduction of plants and animals outside their natural ranges for the purposes of agriculture, fur trapping, aquaculture and ornamental landscaping is an example of artificial allochory. However, allochory often occurs unintentionally - as a consequence of global trade and tourism.
Thus, allochory plays an important role in the formation of modern ecosystems and biodiversity. However, uncontrolled allochory of alien species can lead to negative environmental consequences. Therefore, careful ecological assessments must be carried out before any new species are introduced outside their natural ranges.