The WWF is run at a local level by the following offices...
- WWF Global
- Central African Republic
- Central America
- Democratic Republic of the Congo
- European Policy Office
BioReef, Restoration of Biogenic Rev
Why are we restoring biogenic reefs?
The BioReef project focuses on two species: the European flat oyster (Ostrea edulis) and the horse mussel (Modiolus modiolus). These ‘ecosystem engineers’ once formed the basis for many of the biogenic reefs found in the Danish part of the North Sea. These reefs consist of both living organisms and the shells they leave behind when they die.
While the European flat oyster and horse mussel were once both abundant here, their populations are now greatly diminished. Both species are on both the OSPAR and HELCOM marine environment protection commissions’ Red Lists of species threatened by extinction in the North Sea and the Baltic region.
How are we restoring biogenic reefs?
- Finding suitable sites to deploy reefs. This means screening locations with historical records of biogenic reefs in Danish waters and selecting sites that are suitable for restoring biogenic reefs.
- Cultivating oysters and mussels on a large scale. This means collecting broodstock, the parent organisms that produce the larvae which, once they settle on a substrate, are known as spats and can be used as seeds. The seeds can then be deployed and develop into healthy adult mussels and oysters that can form a reef.
- Deploying one or more reefs on the seabed at the selected site(s).
What challenges does the project seek to overcome?
Large-scale oyster production is more common, but the cultivation of European flat oysters for restoration can only succeed if they’re protected against the Bonamia parasite, which is partly responsible for the massive decline of the species in the North Sea.
Finding innovative solutions with DTU Aqua
The partnership between Ørsted and WWF partnership
The BioReef restoration project is an essential part of a five-year partnership between WWF and the renewable energy company Ørsted. The partnership was launched in October 2022 and the partners are exploring how to support a rapid transition to renewable energy, while addressing the global biodiversity crisis.
Learn more about the partnership at orsted.com/wwf and panda.org/orsted.