| Distribution of microbial biomass and the potential for anaerobic respiration in Hanford Site 300 Area subsurface sediment. | Subsurface sediments were recovered from a 52 m deep borehole cored in the 300 Area of the Hanford Site in southeastern Washington State to assess the potential for biogeochemical transformation of radionuclide contaminants. Microbial analyses were made on 17 sediment samples traversing multiple geological units: the oxic coarse-grained Hanford formation (9-17.4 m), the oxic fine-grained upper Ringold Formation (17.7-18.1 m), and the reduced Ringold Formation (18.3-52m). Microbial biomass (measu ... | 2011 | 22138990 |
| molecular diversity of sulfate-reducing bacteria from two different continental margin habitats. | this study examined the natural diversity and distributions of sulfate-reducing bacteria along a natural carbon gradient extending down the shelf-slope transition zone of the eastern pacific continental margin. dissimilatory (bi)sulfite reductase gene sequences (dsrab) were pcr amplified and cloned from five different sampling sites, each at a discrete depth, from two different margin systems, one off the pacific coast of mexico and another off the coast of washington state. a total of 1,762 clo ... | 2003 | 14532064 |
| related assemblages of sulphate-reducing bacteria associated with ultradeep gold mines of south africa and deep basalt aquifers of washington state. | we characterized the diversity of sulphate-reducing bacteria (srb) associated with south african gold mine boreholes and deep aquifer systems in washington state, usa. sterile cartridges filled with crushed country rock were installed on two hydrologically isolated and chemically distinct sites at depths of 3.2 and 2.7 km below the land surface (kmbls) to allow development of biofilms. enrichments of sulphate-reducing chemolithotrophic (h2) and organotrophic (lactate) bacteria were established f ... | 2003 | 12662174 |