Autochthonous Communities
Mostrando 13-17 de 17 artigos, teses e dissertações.
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13. Protozoan Bacterivory and Escherichia coli Survival in Drinking Water Distribution Systems
The development of bacterial communities in drinking water distribution systems leads to a food chain which supports the growth of macroorganisms incompatible with water quality requirements and esthetics. Nevertheless, very few studies have examined the microbial communities in drinking water distribution systems and their trophic relationships. This study
American Society for Microbiology.
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14. Metabolic efficiency and turnover of soil microbial communities in biodegradation tests.
Biodegradability screening tests of soil commonly measure 14CO2 evolution from radiolabeled test compounds, and glucose has often served as a positive control. When constant amounts of radiolabel were added to soil in combination with increasing amounts of unlabeled substrates, glucose and some related hexoses behaved in an anomalous manner. In contrast to t
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15. Phylogenetic identification and in situ detection of individual microbial cells without cultivation.
The frequent discrepancy between direct microscopic counts and numbers of culturable bacteria from environmental samples is just one of several indications that we currently know only a minor part of the diversity of microorganisms in nature. A combination of direct retrieval of rRNA sequences and whole-cell oligonucleotide probing can be used to detect spec
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16. Sampling Natural Viral Communities from Soil for Culture-Independent Analyses
An essential first step in investigations of viruses in soil is the evaluation of viral recovery methods suitable for subsequent culture-independent analyses. In this study, four elution buffers (10% beef extract, 250 mM glycine buffer, 10 mM sodium pyrophosphate, and 1% potassium citrate) and three enumeration techniques (plaque assay, epifluorescence micro
American Society for Microbiology.
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17. Near-Bottom Pelagic Bacteria at a Deep-Water Sewage Sludge Disposal Site †
The epibenthic bacterial community at deep-ocean sewage sludge disposal site DWD-106, located approximately 106 miles (ca. 196 km) off the coast of New Jersey, was assessed for changes associated with the introduction of large amounts of sewage sludge. Mixed cultures and bacterial isolates obtained from water overlying sediment core samples collected at the