My research explores the interactions of food (prey) quality and quantity on consumer dynamics and thence on trophic dynamics (stoichiometric ecology) and biogeochemistry. Targets for this work are primarily planktonic and microbial systems, with recent emphasis upon mixotrophic plankton and variations in predation rates with prey size, abundance and nutritional quality. Applied aspects include optimisation of algal biomass production in the presence of zooplanktonic pests, and microbial activity in wetlands. The tools for research are primarily dynamic adaptive multi-nutrient (variable stoichiometry) models. I am currently involved in various EU, RCUK and Welsh funded projects investigating a variety of issues ranging from sustainable use of water to the impact of human behaviour on the global oceans. I have also experienced life on the other side of research as Managing Editor of the Journal of Plankton Research (a peer-reviewed scientific journal publication from Oxford University Press), a climate research consultant for the Welsh Local Government Association, and as Biodiversity Officer for Bridgend County Borough Council.