Position Summary A research associate (postdoctoral position) is available in the Evans Lab at Michigan State University’s Kellogg Biological Station in soil microbial ecology. The associate would investigate how gene expression of free-living nitrogen fixers varies over time in a bioenergy cropping system. Growing cellulosic bioenergy like switchgrass, particularly on marginal lands that are not suitable for agriculture, represents an opportunity to replace fossil fuels and sequester carbon into soils, but benefits may be negated if fertilization is required. Optimized biological nitrogen fixation could thus improve sustainability. While nitrogen fixation has been documented in switchgrass cropping systems in the Midwest, we do not understand what controls its rates, and how t
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