Marine ecologist whose research focuses broadly on understanding the causes and consequences of biodiversity and ecosystem structure for ecosystem processes and benefits to society. Most of his projects bridge fundamental and applied questions in community and ecosystem ecology and is increasingly solution-oriented. We mainly use food webs in coastal benthic ecosystems (seagrass beds, coral reefs, mussel beds, etc.) as a model. Most of his research is conducted in the Baltic Sea and in the Western Indian Ocean region (mainly East Africa).

He's currently lead two research projects (FORCE and UrbanFishEries) and lead one of 5 work packages in the EU BiodivERSa-funded project NordSalt.