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My work aims to understand how the stable carbon isotope (13C, 12C) signatures of phytoplankton record physiological and environmental processes.

Ongoing projects include (1) using GC Orbitrap mass spectrometry to investigate how photorespiration affects (position-specific) isotopic ordering in amino acids from phytoplankton and higher plants, and (2) using chemostat culture experiments and modeling approaches to study how algal biomass records atmospheric CO2 levels through geologic time.