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Oysters Return: Belfast Lough Sees Native Species Restored
9 Jan
Summary
- Thousands of native oysters reintroduced after a century-long absence.
- Project aims to restore vital oyster reefs for marine ecosystem health.
- Oysters improve water quality by filtering up to 200 liters daily.
Native European oysters have been reintroduced into Belfast Lough, marking a significant milestone in restoring a species absent for over a century. Ulster Wildlife led the effort, releasing 2,000 adult and over 30,000 juvenile oysters, cultivated in protected nurseries. This initiative aims to rebuild vital underwater reefs, essential for the species' recovery and broader marine ecosystem health.
The disappearance of European oysters from Belfast Lough was attributed to overfishing, pollution, and habitat loss. However, the recent discovery of a small surviving population spurred Ulster Wildlife's restoration plans. Support from various organizations and funding through the Carrier Bag Levy are enabling the scaling up of wild populations, with oysters delivered from Scotland and deployed by staff and volunteers.
As these oysters mature, they are expected to form reefs that will enhance water quality, with each adult filtering up to 200 liters daily. This project is a first for Northern Ireland and aligns with sustainability goals, promoting improved water quality and marine biodiversity. Regular checks will monitor the oysters' survival and growth, paving the way for future, larger-scale deployments.
