Correlation between anammox activity and microscale distribution of nitrite in a subtropical mangrove sediment

Meyer, RL, Risgaard-Petersen, N and Allen, DE (2005) Correlation between anammox activity and microscale distribution of nitrite in a subtropical mangrove sediment. Applied And Environmental Microbiology, 71 10: 6142-6149. doi:10.1128/AEM.71.10.6142-6149.2005

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Author Meyer, RL
Risgaard-Petersen, N
Allen, DE
Title Correlation between anammox activity and microscale distribution of nitrite in a subtropical mangrove sediment
Journal name Applied And Environmental Microbiology   Check publisher's open access policy
ISSN 0099-2240
Publication date 2005
Sub-type Article (original research)
DOI 10.1128/AEM.71.10.6142-6149.2005
Open Access Status File (Publisher version)
Volume 71
Issue 10
Start page 6142
End page 6149
Total pages 8
Editor L. Nicholson Ornston
Place of publication Washington
Publisher American Society for Microbiology
Collection year 2005
Language eng
Subject C1
270301 Bacteriology
780199 Other
Abstract The distribution of anaerobic ammonium oxidation (anammox) in nature has been addressed by only a few environmental studies, and our understanding of how anammox bacteria compete for substrates in natural environments is therefore limited. In this study, we measure the potential anammox rates in sediment from four locations in a subtropical tidal river system. Porewater profiles of NOx- (NO2- plus NO3-) and NO2- were measured with microscale biosensors, and the availability of NO2- was compared with the potential for anammox activity. The potential rate of anammox increased with increasing distance from the mouth of the river and correlated strongly with the production of nitrite in the sediment and with the average concentration or total pool of nitrite in the suboxic sediment layer. Nitrite accumulated both from nitrification and from NOx- reduction, though NOx- reduction was shown to have the greatest impact on the availability of nitrite in the suboxic sediment layer. This finding suggests that denitrification, though using NO2- as a substrate, also provides a substrate for the anammox process, which has been suggested in previous studies where microscale NO2- profiles were not measured.
Keyword Anammox Activity
Subtropical Tidal River System
Suboxic Sediment Layer
Biotechnology & Applied Microbiology
Microbiology
Anaerobic Ammonium Oxidation
Marine-sediments
Environmental Applications
Oxidizing Bacteria
N-2 Production
Water
Nitrate
Sea
Denitrification
Microsensor
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2006 Higher Education Research Data Collection
Advanced Water Management Centre Publications
 
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Created: Wed, 15 Aug 2007, 07:21:11 EST