Jeffrey S. Seewald

The paper tests microbial survival in an Enceladus ocean analog medium using thermodynamic modeling and Earth-based samples, finding stress-tolerant heterotrophic bacteria can persist under simulated conditions.

The paper measures microbial eukaryote abundances and predation rates at deep-sea hydrothermal vents, showing higher grazing rates under in situ pressure and their role in deep-sea carbon cycling.