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n. pl. al·loch·thons or al·loch·tho·nes (-thə-nēz′)
1. One that originated or was formed in a place other than where it is found, especially a rock formation that has been displaced.
2. A member of a human population that relocated or was displaced from a particular area.
3. Ecology A plant or animal that is not indigenous.

[German : allo-, allo- (from Greek, from allos, other; see al- in Indo-European roots) + Greek khthōn, earth; see dhghem- in Indo-European roots.]
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In 1999, the national statistical agency CBS presented a more detailed classification of the overarching category of allochthones, discerning "Western-allochthones" and "non-Western allochthones," which were separated in "first-" and "second generation" (Yanow and Van der Haar, 2012) The following authoritative definitions are then in use: (6)
In addition to inefficiency of water treatment plant, the input due to runoff of allochthones organic matter seems to result in a decrease or increase some of water quality parameters (Salvado, V.
Im wesentlichen geht es dabei um die Frage, ob der Renarrativ ein allochthones oder autochthones Phanomen darstellt, was nach dem gegenwartigen Stand der wissenschaftlichen Forschung noch nicht bewiesen werden kann und auch nicht die Aufgabe dieses Beitrags sein soll.