Introduced species
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![]() Sweet clover (Melilotus sp.), introduced and naturalized to the U.S. from Eurasia as a forage and cover crop. |
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Some introduced species are damaging to the ecosystem they are introduced into, others have no negative effect and can, in fact, be beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown, for instance in New Zealand. A list of introduced species is given in a separate article.
- Related: Avian range expansion, Biodiversity, Biological dispersal, Burmese Pythons in Florida, Genetic pollution, Invasion biology terminology, Invasive species
GB Non-native Species Secretariat GB Non-native Species Secretariat www.nonnativespecies.org - Web |
Alien Plants in Ireland Alien Plants in Ireland www.biochange.ie/alienplants/ - Web |
Introduced species in the British Isles Introduced species in the British Isles www.introduced-species.co.uk - Web |
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Alien species in Poland Alien species in Poland www.iop.krakow.pl/ias/ - Web |
Introduced Species in Eastern United States Introduced Species in Eastern United States www.columbia.edu/.../invbio_plan_report_home.html - Web |
Pathways for Invasive Species Introduction Pathways for Invasive Species Introduction www.epa.gov/owow/invasive_species/pathways.html - Web |
Species Profile- Invasive Species Species Profile- Invasive Species www.invasivespeciesinfo.gov/whatis.shtml - Web |
Nonindigenous Species Database Network Nonindigenous Species Database Network www.nisbase.org/nisbase/index.jsp - Web |
The Naked Scientists Invasive Species Articles The Naked Scientists Invasive Species Articles www.thenakedscientists.com/.../ - Web |