Abundance of ammonia-oxidizing Archaea (AOA) was found to be always greater than that of ammonia-oxidizing Bacteria along an estuarine salinity gradient, and AOA abundance was highest at intermediate salinity. However, AOA abundance did not correlate with potential nitrification rates. This lack of correlation may be due to methodological limitations or alternative energy sources.
Bernhard, Anne E.; Landry, Zachary C.; Blevins, Alison; de la Torre, José R.; Giblin, Anne E.; and Stahl, David A., "Abundance of Ammonia-Oxidizing Archaea and Bacteria along an Estuarine Salinity Gradient in Relationship to Potential Nitrification Rates" (2010). Biology Faculty Publications. 28.
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