Most Unwanted

There is a large number of potential and established non-native species on the island of Ireland but which of these are have damaging effects on native species and ecosystems and which will lend themselves to management?

A risk assessment has been carried out to help answer these questions. This process was designed to take into account the economic and legislative obligations of both jurisdictions. To date, risk assessments have been carried out for 385 established species and 171 potential invaders.

The most unwanted species have been selected from the highest scoring of all the species assessed. Information on each of these species is provided below. Detailed management plans and best practise guidance are available in downloads and resources section. Be vigilant, don’t transport these species to Ireland or across the island, and report all sightings.