B10 The number of alien species is rising globally 
at unprecedented and increasing rates (Figure 
SPM.4) (well established) {2.2.1}. Thirty-seven per cent 
of all known alien species have been reported since 1970 
SUMMARY FOR POLICYMAKERS
19SUMMARY FOR POLICYMAKERS
BACKGROUND
B. Globally, invasive alien species and their impacts are 
increasing rapidly and are predicted to continue rising in 
the future