Managing primrose willow in the Brière

Partner RNP: Brière

INRAE departments and units: Centre for Environmental Economics

This project, developed with the Brière RNP, brings together economists and ecologists from INRAE, CNRS and the University of Aix-Marseille, as well as two park managers. It responds to managers’ needs to know where, when and how to manage invasive alien species.

Using the example of the primrose willow – an invasive alien species that grows along the banks of rivers and lakes, causes a loss of biodiversity and has significant economic costs to manage – the project aims to build ‘all-purpose’ bio-economic models for invasive alien species. These models combine an ecological population dynamics module and an economic module, which are co-constructed with stakeholders in the field in order to take account of local priorities, objectives and constraints. They will be used to design decision-making tools for managing biological invasions. The first model will be used to analyse spatial management strategies for primrose willow in the Brière Regional Nature Park.

More broadly, the project aims to gain a better understanding of the problems associated with biological invasions in the RNP, the management plans put in place and the data collected. The project team plans to roll out the project to all fifty-eight parks, with the support of the Fédération des PNR (RNP Federation).

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