interacting, and non-additive effects of drivers, with differences in the overall importance of drivers across stages. While all drivers 
can potentially influence each biological invasion stage, indirect drivers, particularly those associated with economic growth, are more 
important in facilitating the transport and introduction stages {3.6.2}. In contrast, direct drivers, particularly land- and sea-use and 
climate change, are proportionally more important in facilitating the later stages of biological invasion {3.6.2}. 
31SUMMARY FOR POLICYMAKERS
19SUMMARY FOR POLICYMAKERS
BACKGROUND
TIC ASSESSMENT REPORT ON INVASIVE ALIEN SPECIES AND THEIR CONTRO