Wageningen Environmental Research (Alterra) is a research institute which is part of Wageningen University & Research and offers a combination of practical, innovative and interdisciplinary scientific research across many disciplines related to the green world around us and the sustainable use of our living environment. Aspects of our environment that Wageningen Environmental Research (Alterra) focuses on include soil, water, the atmosphere, the landscape, and biodiversity ‒ on a global scale as well as regionally, from the Dutch polders to the Himalayas and from Amsterdam to the Arctic. Wageningen Environmental Research (Alterra) will be lead Work Package 3: Environmental Risk Assessment (ERA) of potentially toxic substances and will be involved in the case studies, developing fate and effect models and associated environmental scenarios and the development of laboratory and semi-field ecotoxicological test systems to assess the effects of chemical used in European aquaculture.