Results 21 to 30 of about 1,066,674 (283)

Community composition and abundance of complete ammonia oxidation (comammox) bacteria in the Lancang River cascade reservoir

Ecotoxicology and Environmental Safety, 2023
The construction of the reservoir has changed the nitrogen migration and transformation processes in the river, and a large amount of sediment deposition in the reservoir may also lead to the spatial differentiation of complete ammonia oxidation ...
Hang Ding, Jiahui Zhang, Yuchun Wang, Mingming Hu, Jie Wen, Shanze Li, Yufei Bao, Jianwei Zhao   +7 more
doaj   +1 more source

Ammonia-oxidizing archaea and ammonia-oxidizing bacteria communities respond differently in oxy-gen-limited habitats

Frontiers in Environmental Science, 2022
Ammonia-oxidizing archaea (AOA) and bacteria (AOB) are the most important ammonia oxidation functional community, while the coastal environment just provides a different oxygen environment for the ammonia oxidation process.
Jialin Du, Jialin Du, Lin Meng, Mingsheng Qiu, Shuaiwei Chen, Binghui Zhang, Wenjing Song, Ping Cong, Xuebo Zheng   +8 more
doaj   +1 more source

The use of artificial aeration in horizontal sub-surface flow constructed wetlands for tertiary nitrification [PDF]

, 2014
Increased treatment capability is required on small sewage treatment works to meet ammonium consents that are tightening to effluent concentrations of below 5 mg[Ammonical nitrogen (mg/L)] and in some cases as low as 0.5mg[Ammonical nitrogen (mg/L ...
Butterworth, Eleanor
core   +7 more sources

Diversity and Abundance of Ammonia-Oxidizing Bacteria and Archaea in a Freshwater Recirculating Aquaculture System

Hayati Journal of Biosciences, 2018
The role of ammonia-oxidizing bacteria and archaea was evaluated using amoA gene in a freshwater recirculating system. Broken earthen pot pieces (BEP) were used as filter bed material.
Cherita Devi Khangembam, Jai Gopal Sharma, Rina Chakrabarti   +2 more
doaj   +1 more source

Effect of Long-Term Fertilization on Ammonia-Oxidizing Microorganisms and Nitrification in Brown Soil of Northeast China

Frontiers in Microbiology, 2021
The objective of this study was to find out changes in ammonia oxidation microorganisms with respect to fertilizer as investigated by real-time polymerase chain reaction and high-throughput sequencing.
Fangfang Cai, Fangfang Cai, Fangfang Cai, Peiyu Luo, Peiyu Luo, Peiyu Luo, Jinfeng Yang, Jinfeng Yang, Jinfeng Yang, Muhammad Irfan, Shiyu Zhang, Shiyu Zhang, Shiyu Zhang, Ning An, Ning An, Ning An, Jian Dai, Jian Dai, Jian Dai, Xiaori Han, Xiaori Han, Xiaori Han   +21 more
doaj   +1 more source

Low yield and abiotic origin of N2O formed by the complete nitrifier Nitrospira inopinata

Nature Communications, 2019
Ammonia-oxidizing bacteria and archaea are major producers of the gases nitrous oxide and nitric oxide. Here, Kits et al. show that a complete ammonia-oxidizing (comammox) bacterium emits nitrous oxide at levels that are comparable to those produced by ...
K. Dimitri Kits, Man-Young Jung, Julia Vierheilig, Petra Pjevac, Christopher J. Sedlacek, Shurong Liu, Craig Herbold, Lisa Y. Stein, Andreas Richter, Holger Wissel, Nicolas Brüggemann, Michael Wagner, Holger Daims   +12 more
doaj   +1 more source

Nitrifier Gene Abundance and Diversity in Sediments Impacted by Acid Mine Drainage

Frontiers in Microbiology, 2017
Extremely acidic and metal-rich acid mine drainage (AMD) waters can have severe toxicological effects on aquatic ecosystems. AMD has been shown to completely halt nitrification, which plays an important role in transferring nitrogen to higher organisms ...
Bhargavi Ramanathan, Andrew M. Boddicker, Timberley M. Roane, Annika C. Mosier   +3 more
doaj   +1 more source

Alcohols as inhibitors of ammonia oxidizing archaea and bacteria

FEMS Microbiology Letters, 2023
Abstract Ammonia oxidizers are key players in the global nitrogen cycle and are responsible for the oxidation of ammonia to nitrite, which is further oxidized to nitrate by other microorganisms. Their activity can lead to adverse effects on some human-impacted environments, including water pollution through leaching of nitrate and ...
Barbora Oudova-Rivera, Andrew T Crombie, J Colin Murrell, Laura E Lehtovirta-Morley   +3 more
openaire   +2 more sources

Transcriptomic Response of Nitrosomonas europaea Transitioned from Ammonia- to Oxygen-Limited Steady-State Growth

mSystems, 2020
Ammonia-oxidizing microorganisms perform the first step of nitrification, the oxidation of ammonia to nitrite. The bacterium Nitrosomonas europaea is the best-characterized ammonia oxidizer to date. Exposure to hypoxic conditions has a profound effect on
Christopher J. Sedlacek, Andrew T. Giguere, Michael D. Dobie, Brett L. Mellbye, Rebecca V. Ferrell, Dagmar Woebken, Luis A. Sayavedra-Soto, Peter J. Bottomley, Holger Daims, Michael Wagner, Petra Pjevac   +10 more
doaj   +3 more sources

Nitrogen and Phosphorus Fertilization Reshapes the Abundance and Structure of Ammonia Oxidizers on a Leymus chinensis Steppe in Northern China

Agronomy, 2022
Although nitrogen (N) and phosphorus (P) fertilization are important for maintaining the health and productivity of Leymus chinensis steppe, their impact on the abundance and community structure of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing ...
Yan Qin, Wenhui Liu, Feng He, Xianglin Li   +3 more
doaj   +1 more source