Our understanding of microbial colonisation of marine plastics is limited to descriptive taxonomic studies, which have highlighted the huge diversity of bacteria able to ‘hitch-hike’ on plastic debris. However, quantifying and understanding the potential role of marine plastic debris for the persistence and dispersal of potentially pathogenic microorganisms is of pressing importance and global significance. This ambitious project will characterise the range of microbial colonisation dynamics on microplastics, from their source through to delivery at ocean receptors.

By quantifying the processes of pathogen colonisation and dispersal, together with microbial biodegradation of plastic-associated toxins, the “Plastic-Vectors Project” will address key challenges, and deliver a step-change in our understanding of the human health risks associated with microplastics in coastal environments. By characterising the importance of microplastics as an environmental reservoir and vector for microbial communities, this project will have far-reaching implications for human health and well-being, coastal ecosystem services and economic stability. By understanding the multi-pollutant and multi-scale effects of microplastics, the “Plastic Vectors Project” will deliver a more accurate risk assessment of microplastics by integrating the effects of harmful plastic-associated microbes together with chemical co-pollutants.