Results 81 to 90 of about 217,293 (183)

Metagenomic Evidence for the Presence of Comammox Nitrospira-Like Bacteria in a Drinking Water System

mSphere, 2016
We report metagenomic evidence for the presence of a Nitrospira-like organism with the metabolic potential to perform the complete oxidation of ammonia to nitrate (i.e., it is a complete ammonia oxidizer [comammox]) in a drinking water system.
Ameet J. Pinto, Daniel N. Marcus, Umer Zeeshan Ijaz, Quyen Melina Bautista-de lose Santos, Gregory J. Dick, Lutgarde Raskin   +5 more
doaj   +1 more source

Predominance of ammonia-oxidizing archaea and nirK-gene-bearing denitrifiers among ammonia-oxidizing and denitrifying populations in sediments of a large urban eutrophic lake (Lake Donghu)

, 2013
The coupled nitrification-denitrification process plays a pivotal role in cycling and removal of nitrogen in aquatic ecosystems. In the present study, the communities of ammonia oxidizers and denitrifiers in the sediments of 2 basins (Guozhenghu Basin ...
Song, Chunlei, Zhou, Yiyong, Zhou, YY (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, 7 Donghu South Rd, Wuhan, Hubei, Peoples R China., Cao, Xiuyun, Hou, Jie   +4 more
core   +1 more source

Ammonia oxidation coupled to CO2 fixation by Archaea and Bacteria in an agricultural soil

, 2011
Ammonia oxidation is an essential part of the global nitrogen cycling and was long thought to be driven only by bacteria. Recent findings expanded this pathway also to the archaea.
Dumont, Marc G., Jennifer Pratscher, Pratscher, J., Dumont, Marc, Dumont, M., Conrad, R., Dumont, Marc G, Marc G. Dumont, Ralf Conrad, Pratscher, Jennifer, Conrad, Ralf, Dumont, M. G.   +11 more
core   +1 more source

Ammonia‐oxidizing archaea and nitrite‐oxidizing nitrospiras in the biofilter of a shrimp recirculating aquaculture system [PDF]

, 2013
This study analysed the nitrifier community in the biofilter of a zero discharge, recirculating aquaculture system ( RAS ) for the production of marine shrimp in a low density (low ammonium production) system.
Raskin, Lutgarde, Briones, Aurelio, Brown, Monisha N., Diana, James   +3 more
core   +1 more source

Soil Microbial Communities Changes Along Depth and Contrasting Facing Slopes at the Parque Nacional La Campana, Chile

Microorganisms
The Parque Nacional La Campana (PNLC) was recently recognized for its high soil surface microbial richness. Here, we explored the microbial community structure in soil profiles from contrasting facing slopes where sclerophyllous forest (SF) and ...
Carolina Quinteros-Urquieta, Jean Pierre Francois, Polette Aguilar-Muñoz, Verónica Molina   +3 more
doaj   +1 more source

Hydroxylamine released by nitrifying microorganisms is a precursor for HONO emission from drying soils

Scientific Reports, 2018
Nitrous acid (HONO) is an important precursor of the hydroxyl radical (OH), the atmosphere´s primary oxidant. An unknown strong daytime source of HONO is required to explain measurements in ambient air.
M. Ermel, T. Behrendt, R. Oswald, B. Derstroff, D. Wu, S. Hohlmann, C. Stönner, A. Pommerening-Röser, M. Könneke, J. Williams, F. X. Meixner, M. O. Andreae, I. Trebs, M. Sörgel   +13 more
doaj   +1 more source

Nitrogen removal and ammonia-oxidising bacteria in a vertical flow constructed wetland treating inorganic wastewater [PDF]

, 2011
Nitrogen removal performance and the ammonia-oxidising bacterial (AOB) community were assessed in the batch loaded 1.3ha saturated surface vertical flow wetland at CSBP Ltd, a fertiliser and chemical manufacturer located in Kwinana, Western Australia ...
Domingos, S.S., Dallas, S., Skillman, L., Felstead, S., Ho, G.   +4 more
core  

Vertical segregation and phylogenetic characterization of ammonia-oxidizing bacteria and archaea in the sediment of a freshwater aquaculture pond

Frontiers in Microbiology, 2016
Pond aquaculture is the major freshwater aquaculture method in China. Ammonia-oxidizing communities inhabiting pond sediments play an important role in controlling culture water quality.
Shimin eLu, Shimin eLu, Xingguo eLiu, Qigen eLiu, Zhuojun eMa, Zongfan eWu, Zongfan eWu, Xianlei eZeng, Xianlei eZeng, Xu eShi, Zhaojun eGu   +10 more
doaj   +1 more source

Ammonia-oxidizing archaea in engineered biofiltration systems [PDF]

, 2016
Ammonia is a nitrogenous metabolic waste product that is produced by all animal life. High concentrations of ammonia are toxic to animals and may result in algal blooms and eutrophication in aquatic environments. To prevent negative impacts on animal and
Sauder, Laura
core  

Meta-analysis reveals ammonia-oxidizing bacteria respond more strongly to nitrogen addition than ammonia-oxidizing archaea [PDF]

, 2016
Shifts in microbial communities driven by anthropogenic nitrogen (N) addition have broad-scale ecological consequences. However, responses of microbial groups to exogenous N supply vary considerably across studies, hindering efforts to predict community ...
Carey, Chelsea J, Hart, Stephen C, Nicholas C. Dove, Stephen C. Hart, Dove, Nicholas C, Chelsea J. Carey, Emma L. Aronson, Beman, J Michael, Aronson, Emma L, J. Michael Beman   +9 more
core   +1 more source