Dynamics of ammonia oxidizing Archaea in the South Atlantic Bight

ABSTRACT:  Previous work on the Georgia, USA coast revealed consistent mid-summer peaks in the abundance of Thaumarchaeota accompanied by spikes in nitrite concentration.  We collected data on the distribution of Thaumarchaeota, ammonia-oxidizing Betaproteobacteria (AOB), nitrite-oxidizing Nitrospina, environmental variables and rates of ammonia oxidation during 6 cruises in the South Atlantic Bight from April to November 2014 to evaluate the areal extent and timing of the bloom.  The abundance of Thaumarchaeota marker genes (16S rRNA and amoA) increased at inshore and nearshore stations st


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