Mark Brzezinski

Dr. Mark Brzezinski is a Research Professor at the University of California, Santa Barbara, specializing in marine biogeochemistry and microbial ecology. His work focuses on diatoms' role in silicon cycling, their ecological and climate impacts, and the interplay between nutrient dynamics and carbon sequestration. Key research areas include silicon limitation in marine systems, diatom-virus interactions, and the application of silicon isotopes as biogeochemical proxies.

His research integrates field studies (e.g., EXPORTS, GEOTRACES campaigns) with laboratory experiments, addressing topics like diatom physiology under nutrient stress, silica production mechanisms, and the resilience of marine ecosystems to climate change interventions such as ocean alkalinity enhancement.

Notable contributions include advancing understanding of the global silicon cycle, the role of diatoms in the biological carbon pump, and the development of isotopic tools to trace historical oceanic processes. Collaborative projects with international teams have furthered insights into Arctic and Southern Ocean biogeochemistry.

Dr. Brzezinski’s work has implications for predicting future climate scenarios, particularly regarding ocean carbon sinks and microbial community shifts under environmental perturbations.