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An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately or accidentally. Non-native species ...
A species introduced to a new area or country. Similar terms include alien species, exotic species, introduced species, non indigenous species, and non native species. Flora Plant or bacterial life forms of a region or geological period (Allaby 1998). Habitat
Humans have introduced more different species to new environments than any single document can record. This list is generally for established species with truly wild populations— not kept domestically, that have been seen numerous times, and have breeding populations. While most introduced species can cause a negative impact to new ...
This is a list of extraterrestrial beings that have been reported in close encounters, claimed or speculated to be associated with unidentified flying objects (UFOs) (not to be confused with the meaning of the term "alien species" in the biological science of ecology). [1]
Non-native species can be introduced to fill an ecological engineering role that previously was performed by a native species now extinct. The procedure is known as taxon substitution. [ 132 ] [ 158 ] [ 159 ] On many islands, tortoise extinction has resulted in dysfunctional ecosystems with respect to seed dispersal and herbivory.
Naturalisation (or naturalization) is the ecological phenomenon through which a species, taxon, or population of exotic (as opposed to native) origin integrates into a given ecosystem, becoming capable of reproducing and growing in it, and proceeds to disseminate spontaneously. [1]
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After an introduction occurs, the animal is considered a non-native species in that area. If this new species does not harm its new environment, it will remain a non-native species, but once the introduced species begins to enact damage on the natural functions of the ecosystem, it becomes classified as an invasive species. [26]