The University of Brighton and UIR CIC hope this study could become a model for investigating particle pollution in similar freshwater environments worldwide, as plastic pollution continues to rise and rivers play a critical role in transporting these particles from land to sea.
Plastic production has skyrocketed from 2 million tonnes in 1950 to 348 million tonnes in 2017 – projected to hit 33 billion tonnes by 2050. Around 80% of marine plastic pollution comes from land, with rivers acting as the main transport pathways to the sea.
Against this global backdrop, the discovery of persistent microfibre pollution in the chalk headwaters of the Itchen is cause for concern. Microfibres and other particles can be ingested by plankton, fish and aquatic insects, disrupting the food chain and threatening species from trout to otters.
The discovery of fibreglass is particularly striking, with possible links to septic tanks, pipes, or infrastructure – and the University of Brighton is at the forefront of research into its ecological impacts.
“But there is hope”, says Ian Diver. “We can all make small changes – from reducing fast fashion and washing our clothes less often, to buying food not wrapped in plastic – adding up to a big difference if we all act together.”
As the research continues, Ian and Corina plan to work closely with local stakeholders to pinpoint the sources of pollution and develop practical, evidence-based interventions. Their collaborative approach ensures that solutions are grounded in both scientific understanding and community engagement, giving local residents a meaningful role in protecting their environment.
By combining the University of Brighton’s research expertise with the commitment of local volunteers, the project demonstrates how communities can take meaningful action to protect vulnerable habitats. Together, these efforts hope to safeguard the Itchen while cultivating knowledge and practices that support healthier, more resilient environments for the future.
The project is supported by Southern Water and by the National Lottery Heritage Fund through the Hampshire & Isle of Wight Wildlife Trust and Wessex Rivers Trust.