Initial management actions, such as installing barriers and draining breeding ponds, have shown positive results. However, recolonisation has occurred via the connected stream, highlighting the need for a more coordinated and targeted approach.

The project will implement additional control measures in key ponds and along the watercourse to reduce the spread of the species. It will also develop an adaptive management plan based on scientific data, including population density, habitat characteristics and feasibility of interventions. Given the transboundary nature of the invasion, the project is carried out in close collaboration with partners in both Wallonia and Flanders to ensure coordinated and effective action.

This project is implemented by the Contrat de rivière Escaut-Lys Asbl and the Wallonia Public Service (SPW).

Project objectives

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

The project also aims to prioritise and implement the most effective eradication methods across different habitats, while ensuring coordination between regions.

Finally, it aims to reduce the risk of further spread and protect native biodiversity, including threatened amphibian species.