Today the INBO team drafted bow-ties for 3 case study species. Bow tie analyses provide a clear framework for invasive species prevention by linking potential introduction pathways to their causes and consequences. They help identify critical control points where interventions—such as biosecurity measures or pathway restrictions—can be applied to prevent introductions. This structured approach can improve risk management, supports decision-making, and facilitates communication among stakeholders. The method is in use in marine biosecurity management but the approach can also serve management of freshwater invaders. The three case study species cause declines in native conservation-concern species through competition and pathogen transmission and can also bring freshwater systems beyond tipping points of phytoplankton-dominated systems. Based on the case study expertise the team identified several active pathways but also potential preventative solutions. The bow-tie approach exemplifies the often complex interactions between various pressures exerted by invasive species.
