the number of invasive alien species and their negative 
impacts are likely to increase due to the amplification of 
multiple drivers including but not limited to demographic, 
economic and land-use and sea-use change while noting 
regional variation. Additionally, climate change will further 
exacerbate the establishment of some invasive alien species 
and will be a major cause of future establishment and 
spread. Delays in the response of invasive alien species 
to drivers of change may result in a long legacy of future 
biological invasions due to past and present amplification 
of drivers.
SUMMARY FOR POLICYMAKERS
The thematic assessment report on
INVASIVE ALIEN SPECIES
AND THEIR CONTROL
B. Globally, invasive alien species 
and their impacts are increasing 
rapidly and are predicted to 
continue rising in the future