A collaborative initiative with the Oregon Sea Grant Natural Resource Policy Fellowship.
The Problem
Oyster aquaculture plays a vital role in Oregon’s coastal economy, but it comes with a challenge: marine debris. Specifically, polystyrene docks and floats used in oyster farming often break down and contribute to plastic pollution in our estuaries. As we work towards more sustainable aquaculture practices, it’s essential to address this issue and find effective solutions to reduce marine debris and protect our waterways.
1 Volunteers from the Newport Chapter at a cleanup event targeting aquaculture marine debris in 2021. Photo credit: Charles Mitchell
2 Polystyrene dock fragments in Yaquina Bay show biofouling and harbor an invasive isopod species that bores into the foam, posing an added problem for the area. Photo: Charles Mitchell
3 Polystyrene breaks down into tiny particles that spread throughout the estuary, making cleanup tough and creating a lasting risk for wildlife that can accidentally consume the fragments. Photo credit: Charles Mitchell
4 Large piece of foam from an aquaculture dock with yellow rope attached, recovered in Yaquina Bay. Over time, these docks break down and contribute debris that can harm estuary ecosystems. Photo credit: Charles Mitchell
5 Surfrider volunteer carries a sizable piece of plastic debris from the Yaquina Bay cleanup. The large size of these foam fragments poses significant logistical challenges for removal and disposal. Photo credit: Charles Mitchell
From Dock to Debris
How expanded polystyrene (EPS) pollutes the aquatic environment
In Oregon, floating foam docks must be encapsulated to prevent pollution, though enforcement has been inconsistent, and some farms still use non-compliant docks.
Alongside advocating for a ban, Canada has partnered with government funding agencies to assist in retrofitting foam docks, replacing them with more sustainable materials. This proactive strategy combines regulatory measures with financial incentives, fostering widespread change through collaboration and community-driven efforts for a better Canadian coastline.
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