The impact of preozonation and filter contact time (depth) on microbial communities was examined in drinking water biofilters treating Ohio River water which had undergone conventional treatment (coagulation, flocculation, sedimentation) or solutions of natural organic matter isolated from groundwater (both ozonated and nonozonated). With respect to filter depth, compared to filters treating no...

My main concern relates to the chemotaxonomic interpretation of PLFA, particularly of 16:1!7. 16:1!7 (syn. 16:1_9) is in fact a ubiquitous FA in microbial systems and can not serve as biomarker strictu sensu. Anyway, despite the fact that some of the conclusions made by Raghoebarsing et al. (2006) were wrong (meaning the co-existence between archaea and bacteria), the result, which they gained ...

The differences between aquatic and terrestrial habitats could change microbial community composition regulate litter decomposition in a subtropical forest, but the linkage remains uncertain. Using phospholipid fatty acids (PLFAs), associated with organisms was monitored to characterize of communities forest floor, headwater stream, intermittent stream. Habitat type did not significantly affect...

The removal of EDCs in activated sludge processes can be enhanced by increasing solid and hydraulic retention times (SRT HRT); it has been suggested that the improvement is due to changes microbial community structure (MCS). Though influence SRT HRT on chemical MCS studied isolation, their synergistic impact estrogens nonylphenols remains unknown. Hence, we investigated how both parameters ulte...

Microorganisms play a key role in nutrient cycling agriculture and can contribute to improve soil quality enhance crop production. Thus, there is need identify the most suitable management practices which foster increases microbial biomass diversity. A meta-analysis was performed assess changes abundance agricultural soils affected by: (i) (tillage, fertilization diversification); (ii) environm...

the influence of long-term mixed organic and inorganic contamination on soil microbial activity, community structure and genetic diversity was investigated in soil samples from a coke oven plant located in upper silesia, poland. the tested soils were heavily contaminated with polycyclic aromatic hydrocarbons (pahs) and heavy metals. the microbial communities were characterized using the phospho...

Microorganisms are key players in organic matter and nutrient cycles of terrestrial ecosystems. The analysis microbial membrane lipids, phospholipid fatty acids (PLFAs) has strongly improved our understanding how processes contribute to these cycles. proven yield robust results, but adaptations analytical parameters laboratory needs might lead pitfalls impede comparability PLFA results between ...

Fairy rings promoting circular greening belts in the vegetation can shape soil microbial communities by altering conditions. Knowledge about variables involved this process is incomplete. We characterized of six fairy phospholipid fatty acid (PLFA) profiling a montane grassland, and studied if changes properties correspond to PLFA patterns. Exchangeable potassium (K) decreased inside current ri...

Lipid biomarker analysis has proven valuable in testing the hypothesis that attributes of the extant microbiota can directly reflect the occurrence of contaminant biodegradation. Two past research efforts have demonstrated this utility and are described here. A 4.5 m vertical core was obtained from a diesel fuel oil contamination plume. Core material was assayed for total petroleum hydrocarbons...

Overgrazing and climate change strongly affect alpine meadows by decreasing the plant community biomass and deteriorating the soil environment. To understand how the plant community and soil microbial community structure respond to grazing and N deposition, we conducted an experiment to remove or maintain the plant litter under the chronic addition of N in the Haibei Alpine Meadow in 2005. The ...