Abstract
The MICROFIBRE project integrates natural sciences and social sciences to assess and reduce emissions of microplastic fibres to the environment. We have engaged relevant stakeholders in a combined participatory modelling approach using Fuzzy Cognitive Mapping and Scenario Development to identify key uncertainties and address important research gaps in relation to microplastic fibre pollution. Outcomes suggested that synthetic microfibres must be evaluated relative to natural alternatives, that regulation and policy are key leverage points and that integrated research on social, economic, environmental and technical aspects needs to be undertaken to attain a deeper understanding of the issue.