title: In situ bacterial selenate reduction in the agricultural drainage systems of western Nevada.
abstract: Dissimilatory in situ selenate reduction to elemental selenium in sediments from irrigated agricultural drainage regions of western Nevada was measured at ambient Se oxyanion concentrations. Selenate reduction was rapid, with turnover rate constants ranging from 0.04 to 1.8 h-1 at total Se concentrations in pore water of 13 to 455 nM. Estimates of removal rates of selenium oxyanions were 14.38, and 155 mumol m-2 day-1 for South Lead Lake, Massie Slough, and Hunter Drain, respectively.
authors.affiliation: U.S. Geological Survey, Menlo Park, California 94025.
authors.forename: R S
authors.initials: RS
authors.lastname: Oremland
authors.forename: N A
authors.initials: NA
authors.lastname: Steinberg
authors.forename: T S
authors.initials: TS
authors.lastname: Presser
authors.forename: L G
authors.initials: LG
authors.lastname: Miller
mesh_terms: D000383:Agriculture; D001419:Bacteria / Q000378:metabolism*; D008658:Inactivation, Metabolic; D007700:Kinetics; D009505:Nevada; D010084:Oxidation-Reduction; D064586:Selenic Acid; D012643:Selenium / Q000378:metabolism* / Q000493:pharmacokinetics; D018036:Selenium Compounds; D014871:Water Microbiology
chemical_list: D018036:Selenium Compounds; D012643:Selenium; D064586:Selenic Acid