Definitions
The term 'non-native species' is used throughout this website and is the equivalent of 'alien'species' as used by the Convention on Biological Diversity (CBD). Invasive non-native species (the equivalent of invasive alien species or IAS) are broadly defined as species whose introduction and/or spread threaten biological diversity. Non-native species covered by this website include all fauna and flora with the exception of genetically modified organisms (GMOs), bacteria and viruses. Non-native species also refers to species native to Great Britain but outside of their normal range.
