Initial control measures, such as fencing, pond drainage and treatment, have been effective, but recolonisation has occurred via the connected stream. This highlights the need for a more comprehensive and coordinated approach.

The project will implement targeted interventions in key ponds and along the Douvebeek to reduce dispersal and eliminate remaining individuals. An adaptive management plan will guide actions, integrating ecological data, feasibility of methods and site conditions. Given the transregional nature of the invasion, the project is closely coordinated with partners in Flanders and Wallonia to ensure effective and unified action.

This project is implemented by The Own Capital of the Research Institute for Nature and Forest (INBO).

Project objectives

The project aims to contain and eradicate the population of Xenopus laevis in the Douve Valley through coordinated and targeted control measures. It seeks to use environmental DNA (eDNA) monitoring to detect the species, estimate population density and evaluate the effectiveness of eradication actions.

The project also aims to prioritise interventions in key breeding sites and along dispersal pathways, applying the most effective methods depending on site conditions.

Finally, it aims to ensure coordinated action across regions to achieve complete eradication and prevent further spread.