Kudzu, a Japanese vine
, is invasive in the southeast United States. Here it grows in Atlanta
An invasive species is a species which is not native to the place where it is found. It has moved from its native area, where it grew naturally, into a new area. Often it becomes a nuisance species, because in its new habitat it lacks its old enemies. Normally, as a species evolves, so do the things which eat it or parasitise it. Free of natural restraints, the invading species outcompetes its new neighbours.
Kudzu, for example, is called "The weed which ate the South" because it went out of control in the southern United States. The introduction of starlings to North America is another example.
Images for kids
Beavers from North America constitute an invasive species in Tierra del Fuego, where they have a substantial impact on landscape and local ecology through their dams
Chinese mitten crab (Eriocheir sinensis)
A dish that features whole fried invasive lionfish at Fish Fish of Miami, Florida
Alien invasive species Parthenium hysterophorus smothering native flora in Achanakmar Tiger Reserve, Bilaspur, Chhattisgarh, India