Predator fish can counteract the eutrophication problem

Measures that benefit predator fish, such as cod, pike and perch, can help counteract eutrophication in coastal areas.

This is clear from a new study by researchers at the University of Gothenburg and elsewhere that has now been published in the Journal of Applied Ecology.

“When a coastal area is affected by both eutrophication and overfishing, the results can be intensified if the energy from nutrients benefits both rapidly growing mats of algae and the population of small fish, which can grow unchecked without the control of algae-eating crustaceans or larger predator fish,” says Per-Olav Moksnes at the Department of Marine Sciences.