作者: Brenda Pratt , Roland Riesen , Carl G. Johnston
DOI: 10.1007/S00248-012-0060-8
关键词: Population 、 Aquatic ecosystem 、 Microbial population biology 、 Microbial ecology 、 Community structure 、 Ecology 、 Biology 、 Bioremediation 、 Anaerobic bacteria 、 Sediment
摘要: Sediment contaminated with polycyclic aromatic hydrocarbons (PAHs) is widely distributed in aquatic ecosystems. The microbial community structure of riverbank PAH-contaminated sediments was investigated using phospholipid-derived fatty acid (PLFA) analysis. Surface and subsurface sediment collected from a highly site an uncontaminated along the Mahoning River, OH. PAH concentrations, physical characteristics, other parameters (biomass as phospholipid phosphate (PLP) activity) were also measured. PAHs detected all samples but only quantifiable (250 μg/g g−1) sediment. Subsurface both locations showed very similar PLP values distribution PLFAs, 27–37 % being composed sulfate reducing anaerobic bacteria. Principal components analysis indicated no correlation between contamination PLFA diversity. Although measurements bacterial communities did not reflect environmental differences among sites, highest measured activity (reduction 1,200 nmol INT g−1 h−1), likely population adapted to pollutants, rates that are much higher than many soil systems. These data warrant further investigation into at genetic level indicate potential for bioremediation by indigenous microbes.