The New Zealand mud snail (Potamopyrgus antipodarum) is an invasive species in many countries and has been present in Europe since 1859.[1]
The New Zealand flatworm (Arthurdendyus triangulatus) is an invasive species in Europe where it preys on earthworms and degrades soil quality.
Weka (Gallirallus australis) were introduced to several islands south of New Zealand,[2] including Macquarie Island in the 1870s,[3] where the weka was utilized as a food source.[3][2][4] However, despite their survivability against other predators to islands it is not native to,[3] the weka became a pest by outcompeting prey against native birds,[3] and is claimed to have contributed to the extinction of the Macquarie parakeet and a native species of land rail.[3][4] The weka population in Macquarie Island declined in the 1980s and was fully eradicated in 1988.[4]
New Zealand flax or harakeke (Phormium tenax) is an invasive species in St Helena, some Pacific islands and in Australia.[9]
Pohuehue (Muehlenbeckia complexa), also called wire vine, mattress vine and several other common names, is naturalised in Western Australia.[10] Although it is a valued garden plant, it can become a pest in suitable climates (e.g. San Francisco's Golden Gate National Recreation Area)[11] if not contained.
^"Coprosma repens". New Zealand Plant Conservation Network. Retrieved 2013-12-31.
^"Metrosideros excelsa". South African National Biodiversity Institute. 25 June 2012. Archived from the original on 3 November 2013. Retrieved 27 June 2012.
