Article Abstract:
The potential annamox rates in sediments were determined from four locations in a subtropical tidal river system by measuring the porewater profiles of NO(sub x)(super -) (NO(sub 2)(super -) plus NO(sub 3)(super -)) and NO(sub 2)(super -) and the availability of NO(sub 2)(super -) was compared with the potential for anammox activity. The results suggested that denitrification, though using NO(sub 2)(super -) as a substrate also provides a substrate for the anommox process.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
A microscale biosensor for methane was improved by making it insensitive to oxygen through the addition of an oxygen guard capillary containing heterotrophic bacteria. The bacteria in the oxygen guard's glass capillary consumed oxygen diffusing through the tip membrane, thus preventing it from diffusing into the methane-sensing unit. The improved, oxygen-insensitive biosensor was used in measuring methane concentration profiles in a rice paddy soil.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
The abundance, activity and diversity of ammonium-oxidizing (AOB) are analyzed in prepared microcosms with and without microphytobenthic activity. The analysis indicates that direct competitive interaction take place between algae and AOB and that benthic algae are superior competitors because they have higher N uptake rates and grow faster than AOB.
User Contributions:
Comment about this article or add new information about this topic: