Marie joined Cambridge Environmental Assessments as an Ecotoxicologist in January 2015 and has since gained experience working on a variety of higher tier mesocosm and laboratory ecotoxicology studies to GLP standards. Marie has been a GLP study director for non-standard higher tier laboratory testing, and has worked with a variety of aquatic species and novel test designs in order to provide additional information for use in regulatory submissions. She has worked in the aquatic ecotoxicology team to deliver multiple outdoor aquatic mesocosm studies with both insecticides and herbicides. Marie is proficient in biological sampling techniques for mesocosm studies and in the identification of freshwater aquatic invertebrates. Additionally she had worked on statistically re-evaluating ecotoxicology studies to provide ECx values and has been involved in analysing mesocosm data to provide MDD values.