Bacteria are the dominant ammonia oxidizers in coastal sediments of the Western English Channel

ABSTRACT: The abundance of bacterial (AOB) and archaeal (AOA) ammonia oxidisers, assessed using quantitative PCR measurements of their respective a-subunit of the ammonia monooxygenase (amoA) genes, and ammonia oxidation rates were measured in four contrasting coastal sediments in the Western English Channel. Sediment was sampled bimonthly from July 2008 to May 2011, and measurements of ammonia oxidiser abundance and activity compared to a range of environmental variables including salinity, temperature, water column nutrients and sediment carbon and nitrogen content. Despite a higher abundance of AOA amoA genes within all sediments, and at all time-points, rates of ammonia oxidation correlated with AOB and not AOA amoA gene abundance. Other than ammonia oxidation rate, sediment particle size was th

ORGANISM(S): marine sediment metagenome

SUBMITTER: Bess Ward 

PROVIDER: E-GEOD-50163 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress