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Ulster Wildlife Trust to Establish First Native Oyster Nursery on Belfast Lough at Bangor Marina

27th November 2021
Kevin Baird (left) Harbour Master with Berthing Master Ewan Scott and one of 26 cages that will be suspended under the pontoon walkways at Bangor Marina and will be populated with highly prized Loch Ryan Oysters
Kevin Baird (left) Harbour Master with Berthing Master Ewan Scott and one of 26 cages that will be suspended under the pontoon walkways at Bangor Marina and will be populated with highly prized Loch Ryan Oysters

Did you know that our Native oysters have been an important food source for centuries - the Romans even exported them back to Italy!

The first report of a recognised commercial oyster fishery in Belfast Lough was in 1780 and although the native oyster has been considered extinct there since 1903, in the summer of 2020, live oysters were discovered for the first time in over 100 years – evidence that the environmental conditions for establishment are right.

The charity, Ulster Wildlife Trust, is hoping to establish the first native oyster nursery in Northern Ireland in Bangor Marina on Belfast Lough to support the declining population and to help create a natural long-term carbon store to tackle climate change. So under F, G and H Pontoons, Ulster Wildlife's Heidi McIlvenny with Harbour Master Kevin Baird and his staff will deploy a native oyster nursery.

Highly prized Loch Ryan OystersHighly prized Loch Ryan Oysters

Around 26 cages will be suspended under the pontoon walkways and will be populated with highly prized Loch Ryan Oysters. The Loch Ryan Oyster Bed, one of Scotland’s largest, dates to 1701 when King William 111 granted a Royal Charter to the Wallace family.

The native or flat oyster stays fixed in one place and is a filter feeder meaning it uses its valves to pump water filtering out microscopic algae and small organic particles from the surrounding water. A single oyster can filter up to 200 litres of seawater per day, which can significantly improve water quality and clarity.

Already thriving in another Marina in Conwy Wales, over time the oysters will start releasing oyster larvae into the harbour which will be carried out to settle on the seabed, ultimately resulting in cleaner waters and better marine biodiversity.

Classified as a Priority Species under the UK Post-2010 Biodiversity Framework and a Feature of Conservation Importance for which Marine Conservation Zones can be designated, the oyster has a lifespan of six years.

Harbour Master Kevin Baird would like to get local schools involved after the oysters are in place. “It’s a great environmental project with many very positive benefits”. He added “There will be no disruption to marine traffic”.

Betty Armstrong

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Betty Armstrong

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Betty Armstrong is Afloat and Yachting Life's Northern Ireland Correspondent. Betty grew up racing dinghies but now sails a more sedate Dehler 36 around County Down

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