Distinguishing nitrous oxide production from nitrification and denitrification on the basis of isotopomer abundances

Article Abstract:

A study was conducted on the production of nitrous oxide by hydroxylamine oxidation, by ammonia oxidizers and by a methanotroph, and the nitrite and nitrate reduction by denitrifiers. It was observed that site preferences were 33% characteristic of nitrification and 0% characteristic of denitrification and provide a basis to quantatively apportion nitrous oxide.

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Bacterial diversity in a nonsaline alkaline environment: Heterotrophic aerobic populations

Article Abstract:

Heterotrophic populations are isolated and characterized from an alkaline groundwater environment generated by active sepentinization, which results in a Ca(OH)(sub 2) with pH 11.4. The isolates are screened to assess the degree of diversity present in the environment and to select representative strains for characterization of the populations.

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Application of Streptococcus uberis multilocus sequence typing: Analysis of the population structure detected among environmental and bovine isolates from New Zealand and the United Kingdom

Article Abstract:

Multilocus sequence typing (MLST) was used to study the population biology of bovine milk isolates from the United Kingdom and New Zealand. The scheme was initially used to study a collection of 160 bovine milk isolates from the United Kingdom and showed that the majority of isolates were from one complex (designated the ST-5 complex).

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