I am a geochemist interested in the sources, cycling and environmental applications of nutrients and trace elements across catchments, rivers and the ocean. My research uses both stable and radioactive isotopes to trace interactions between weathering, riverine inputs, particles, biology and seawater, with applications to water quality, nutrient cycling and environmental change. I combine field observations, laboratory experiments, and high-precision mass spectrometry to understand how aquatic systems respond to natural and human-driven processes.