VDWS Transition - From precautionary measures to knowledge-based management of vulnerable habitats near fish farms

Coral reefs, coral forests, and sponge grounds are important yet sensitive habitats along the Norwegian coast, and they often occur in areas also used for aquaculture. Currently, knowledge about how emissions from fish farms impact these species is limited, creating uncertainty for environmental management and for industry development. VDWS Transition will document effects and tolerance thresholds in selected coral and sponge species, and develop practical tools for assessing health status in the field.

The project combines field collection of biological material from multiple regions with laboratory studies to map physiological and cellular responses to stressors. It will also further develop new monitoring tools, including ROV‑based sampling techniques and visual assessment methods.

The results will provide authorities with a stronger basis for decision‑making, increase predictability for the aquaculture industry, and support more sustainable use of the coastal zone.