Adam Langley is interested in how ecosystem cycles respond to, and may feed back to, global change. The most complex and uncertain responses occur in the rhizosphere where plant roots interact intimately with soil microbes. His graduate research in the Arizona desert addressed how mycorrhizal fungi (root symbionts) mediate effects of global change on soil carbon cycling. He currently works as a postdoctoral fellow at the Smithsonian Environmental Research Center. Adam investigates how global change influences the carbon sequestration, nitrogen processing and sustainability of a brackish marsh on the Chesapeake Bay. Though the wetland setting is very different from the desert, many important questions about ecosystem processes are the same.