Beate Kraft is an environmental microbiologist and Associate Professor at the University of Southern Denmark in Odense, Denmark. She conducted postdoctoral research at Harvard University’s Department of Organismic and Evolutionary Biology and the University of Southern Denmark and completed her Ph.D. at the Max Planck Institute for Marine Microbiology in Bremen, Germany. Beate’s research focuses on microbial key players that drive biogeochemical element cycling. Currently, she is particularly interested in microbial physiology at trace oxygen concentrations. This includes pathways of microbial oxygen production in the dark, especially “dark” oxygen production in ammonia-oxidizing archaea. To gain insights into the environmental significance of this process she will study the activity and distribution of ammonia-oxidizing archaea exposed to oxygen depletion during this cruise. Beate received a Villum Young Investigator award in 2019 and a Carlsberg Semper Ardens grant for recently tenured associate professors in 2023.