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Research Biogeochemistry

We are working in collaboration with David Lipson and Ted Raab on the interactions of bacterial iron reduction and humic acid reduction with carbon cycling in arctic peat soils of the northen permafrost areas of Alaska. This project is sponsored through the NSF polar programs. Elliot Friedman has collaborated to produce a video and a presentation that explains why this is important. We have placed electrodes in peat soil as a biogeochemistry tool to quantify bacterial extracellular electron transfer. We will enrich for a community that is involved in microbial electrochemical processes and will use genomic tools to achieve a mechanistic understanding. Metadata will be used in climate modeling approaches. We are active in the Biogeochemistry IGERT program at Cornell University. Finally, we have designed and built rugged, field-ready, affordable potentiostats to set the potential, especially for this project.

Electrodes with potentiostats, battery, and solar panel in Barrow, Alaska.