An Eco-sustainable World
Ecological Glossary

Allochthonous

Allochthonous

The term allochthonous refers to an animal or plant species that for different reasons, such as anthropic or natural actions, is found to grow in a territory different from that in which it normally lives.
The term allochthonous (from the Greek ἄλλος (àllos) “other”, and χθών (chthòn) “soil / earth”) indicates the non-belonging of something or someone to the place of residence.
The term allochthonous can also refer to different sectors such as, in ethnology, where we mean a human being native to a place different from the place where he lives, and then takes on the meaning of a foreigner.

In geology, a tectonic unit that is located in a different place from the one in which it was formed is defined as allochthonous.
Finally, in paleontology, allochthonous refers to a fossil record unrelated to the paleo-environmental context in which it was found, and which therefore underwent active or passive (post-mortem) transport processes. The allochthonous term is in some ways the opposite of autochthonous.




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