Kathleen Walker Contact WALKERKF@ORNL.GOV All Publications Contribution of Microorganisms with the Clade II Nitrous Oxide Reductase to Suppression of Surface Emissions of Nitrous Oxide Mixed nitrate and metal contamination influences operational speciation of toxic and essential elements Characterization of subsurface media from locations up- and down-gradient of a uranium-contaminated aquifer Colwellia psychrerythraea strains from distant deep sea basins show adaptation to local conditions...