Definition of "allochthonous" [allochthonous]

• Originating in a place other than where it is found. (adjective)
• Buried or found in a place remote from the site of formation. (adjective)

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• "More generally, given that the magnitude and recurrence interval of water levels produced by ice jams often exceed those of open-water conditions, breakup is probably the main supplier of allochthonous organic material in cold-regions rivers [11]."
• "The two methodologies give opposite results when accounting for the input of allochthonous (produced outside) organic matter to a particular ecosystem: CO2 flux measurement gives negative NEP due to increased CO2 emission from soil to atmosphere, while weighing gives a higher accumulation of organic carbon (C) in the soil."
• "In terms of flora, the most affected is San Félix island, with 42% of allochthonous plants."