Steven is a Senior Researcher within the Ecotoxicology and Risk Assessment Team at NIVA and has over 20 years experience in investigating in the impacts of chemicals in the marine environment. His main research interests include investigating the effects of environmental contaminants on aquatic organisms such as: 1) the bioavailability of environment chemicals to aquatic organisms; 2) the development and application of biomarker tools to evaluate the effects of pollution exposure; 3) monitoring the biological effects of coastal and offshore produced water discharges in the marine environment, 4) The application of bioassays for risk assessment of environmental chemicals; and 5)Stress effects on physiological parameters in Crustacea and Mollusca.