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Around 15% of Australia's flora is made up of introduced species. [58] The following is a non-inclusive list of some of the more significant plant species. See also: List of invasive species in Australia § Plants
For example, in much of south eastern Australia's freshwater systems introduced carp (often incorrectly called "European" carp) dominate the lowland reaches, [51] while introduced trout species almost completely dominate the upland reaches. While the damaging impact of carp is well recognised, little in the way of control measures have been ...
Native to the Mediterranean regions, more than one species of white snail is now quite common in Kadina and elsewhere in South Australia. This image shows many Theba pisana, and a number of smaller and more pointed Cochlicella acuta aestivating on a fence post. Cernuella virgata (Common white snail) [53] Cochlicella acuta (Pointed snail) [54]
Perhaps the best known example of an Australian plant becoming an invasive species is the problematic introduction of Melaleuca quinquenervia into Florida. As with all Melaleuca species, M. quinquenervia seeds prolifically. In the absence of natural predators, it spread throughout southern Florida; at one time it was estimated that it had ...
Koala Humpback whale. A total of 386 species of mammals have been recorded in Australia and surrounding continental waters: 364 indigenous and 22 introduced. [1] The list includes 2 monotremes, 154 marsupials, 83 bats, 69 rodents (5 introduced), 10 pinnipeds, 2 terrestrial carnivorans (1 recent introduction, and 1 prehistoric introduction), 13 introduced ungulates, 2 introduced lagomorphs, 44 ...
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 ...
[citation needed] The introduction and prolific breeding of animal species such as the cane toad (Rhinella marina) and rabbit (Oryctolagus cuniculus) had greatly disrupted native species populations. [86] [87] Introduced species in Australia are problematic in that they may outcompete or, in the case of the can toad, red fox (Vulpes vulpes) and ...
Numerous plants have been introduced to the state of New South Wales, Australia during the past two centuries, and many of them have become invasive species or noxious weeds which by definition compete with native plants and suppress the growth of indigenous populations.