An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species...

complete list of introduced species for even quite small areas of the world would be dauntingly long. Humans have introduced more different species to new environments...

conditions. Introduced species are considerably dangerous to the delicate ecosystem that is the Victorian Alps. Red foxes are the fourth most common species found...

spread by the introduced signal crayfish. Unlike some other environmental problems such as pollution, the effect of an introduced species is not a single...

An invasive species is an introduced species that harms its new environment. Invasive species adversely affect habitats and bioregions, causing ecological...

and introduced species. Compared with much of the rest of Europe, Great Britain has a smaller number of ants. The size and diversity of ant species in...

species of mammals, with 62 extinct and 10 endangered 55 species of frogs, with 18 endangered 46 species of snakes, with five endangered five species...

species within the regions where it was anthropogenically introduced. If an introduced species causes substantial ecological, environmental, and/or economic...

A number of introduced species, some of which have become invasive species, have been added to New Zealand's native flora and fauna. Both deliberate and...

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...

Others have been deliberately introduced. Even the rainbow trout (Oncorhynchus mykiss) is not a native fish. It was introduced into Lake Constance around...

keystone species is a species that has a disproportionately large effect on its natural environment relative to its abundance. The concept was introduced in...

used to grow crops may cause major losses in yields. Invasive species, plants introduced to an environment where their presence negatively impacts the...

migratory birds in North America (326 species) use the river basin as their flyway. Numerous introduced species are found in the Mississippi and some...

This list of bird species introduced to the Hawaiian Islands includes only those species known to have established self-sustaining breeding populations...

about the potential benefits and detriments of introduced species; some experts believe that certain species, particularly megafauna such as deer, equids...

produced for promotion or to meet competition requirements Introduced species or introduction, a species established by humans outside its natural range Right...

System. The Māori introduced two species: the kurī (dog) and kiore (Polynesian rat). European settlers introduced all other mammal species. Fauna of New Zealand...

species (and one extinct species) are or were native to the island; this list is divided into native species and species introduced to the island since discovery...

These are lists of invasive species by country or region. A species is regarded as invasive if it has been introduced by human action to a location, area...

species introduced to the Hawaiian Islands, and that are currently still established. Primary source for this list is Nonindigenous Aquatic Species Database...

Central America mostly comprise native species and those in South America consist almost entirely of introduced species. In the first year, the ground is prepared...

Parks and Wildlife, the aquatic system in the park has had no introduced fish species recorded, which gives it high conservation value as there are few...

seduce, whom she then binds in her silk and devours. The spider is an introduced species in northeast Georgia and northwest/upstate South Carolina in North...

turtles visit Great Britain's shores. There are also at least seven introduced reptile species. Red-eared slider, Trachemys scripta elegans European pond terrapin...

Endangered, all impacted by invasive species. Further parrot species were not introduced by acclimatisation societies, but occasional releases, both deliberate...

This list of introduced mammal species includes all the species of mammal introduced to an area without regard to that territory being or not being their...

River basin. Introduced Micropterus coosae have displaced native hardhead (Mylopharodon conocephalus) in the Cosumnes River. Introduced redeye bass additionally...

of a species in a given ecosystem is so ancient that it cannot be presupposed whether it is native or introduced. Generally, any introduced species may...

Species richness is the number of different species represented in an ecological community, landscape or region. Species richness is simply a count of...