Research Marine Cyanobacterial Proteomics Phytoplankton Proteomics in the Ross Sea Cobalt and Vitamin B12 Biogeochemistry Trace Metal-Phytoplankton Interactions in the Ross Sea Proteomics of Colimitation in Diatoms Metalloenzymes in Oxygen Minimum Zones Global Biogeochemical Cycling of Cobalt Connecting Trace Elements and Metalloenzymes Across Marine Biogeochemical Gradients Development of a Marine Proteomic Biomarker Capability Development of a Biogeochemical AUV Sampler: Clio