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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 ...
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 ...
Starlings had been introduced in the United States by the mid-1870s. [7] The American Acclimatization Society added another 100 starlings to the total in 1890 and 1891. [7] By the early 21st century, more than 200 million European starlings had spread throughout the United States, Mexico and Canada.
This category is for list articles about introduced species This category is for articles about introduced species . Please do not add this category to general articles about single organisms, unless it is an article specifically about that species' introduction outside of its native range.
This is a list of the mammal species recorded in Canada.There are approximately 200 mammal species in Canada. [1] Its large territorial size consist of fifteen terrestrial and five marine ecozones, ranging from oceanic coasts, to mountains to plains to urban housing, mean that Canada can harbour a great variety of species, including nearly half of the known cetaceans. [2]
Introduced species negatively impact ecosystems through altered predator-prey interactions that can cause harm or even local extinction to native species populations (Towns et al.). There are many examples of animal species such as birds, reptiles, and aquatic insects being harmed by the introduction of predators such as rats, cats, and ants.
This list of introduced bird species includes all the species of bird introduced to an area without regard to that territory being or not being their native area of occupation or the success of that re-introduction or introduction to the area. This practice has been harmful in many areas, although some introductions are made with the aim of ...
The smallmouth bass is only an invasive species in some parts of Canada, as it is a native species to the Great Lakes and connected waters. [8] The smallmouth bass has mostly been introduced due to fishing , either being used as bait or being purposefully added to new lakes to be fished.
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