Projects integrate biogeochemical, microbiological and molecular ecological methods to understand and quantify the mechanistic relationships between geochemical cycles, microbial physiology and the key microbial populations involved.

Quantifying the impact of the metabolic activities and processes occurring in deeply buried sediments and their impact on global biogeochemical cycles requires investigation at ocean basin and geological time scales while validating approaches with experimental research.
Due to the steep chemical gradients, sulfide-oxidant interfaces are narrow zones of high microbial activity. The intense biochemical turnover at these interfaces can impact entire ecosystems, and control feedback mechanisms between sediment and water column biogeochemistry