Results 51 to 60 of about 6,257 (199)

Unifying the global phylogeny and environmental distribution of ammonia-oxidising archaea based on amoA genes [PDF]

Nature Communications, 2018
AbstractAmmonia-oxidising archaea (AOA) are ubiquitous and abundant in nature and play a major role in nitrogen cycling. AOA have been studied intensively based on the amoA gene (encoding ammonia monooxygenase subunit A), making it the most sequenced functional marker gene.
Ricardo J. Eloy Alves, Bui Quang Minh, Tim Urich, Arndt von Haeseler, Christa Schleper   +4 more
openaire   +5 more sources

Warm‐wet transition restructures arid lake microbiomes and functional potential

iMetaOmics, Volume 3, Issue 3, September 2026.
This study summarizes how a long‐term warm‐dry to warm‐wet transition restructures microbiomes and functional potential in Lake Bosten, an arid lake in northwestern China. Warm‐wet hydroclimatic change increased water level and hydrological connectivity, while decreasing salinity and total nitrogen.
Zhen Shen, Xingchen Li, Zhijun Gong, Yang Hu, Yongjiu Cai, Keqiang Shao, Guang Gao, Robbie M. Martin, Xiangming Tang   +8 more
wiley   +1 more source

Enhancing Security in IoT-Assisted UAV Networks Using Adaptive Mongoose Optimization Algorithm With Deep Learning

IEEE Access
Due to the sensitive and mission-critical nature of the data collected and transferred, security in IoT-assisted UAV networks is of great significance. Intrusion detection in IoT-assisted UAV networks includes the deployment of complex monitoring systems
Saud S. Alotaibi, Ahmed Sayed, Elmouez Samir Abd Elhameed, Omar Alghushairy, Mohammed Assiri, Sara Saadeldeen Ibrahim   +5 more
doaj   +1 more source

Sedimentary lycopane/n‐C31 ratio as a proxy for bottom water hypoxia in coastal ocean

Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.
Abstract Bottom‐water hypoxia on continental shelves is intensifying under climate change and eutrophication, yet long‐term records remain scarce. Here we show that the sedimentary lycopane/n‐C31 ratio reliably records bottom‐water oxygenation in the seasonally hypoxic Yangtze River Estuary.
Qingnan Song, Huamao Yuan, Jinming Song, Guiling Zhang, Fengmin Pan, Xuegang Li, Liqin Duan   +6 more
wiley   +1 more source

Abundance and diversity of ammonia-oxidizing archaea and bacteria in sediments of trophic end members of the Laurentian Great Lakes, Erie and Superior. [PDF]

PLoS ONE, 2014
Ammonia oxidation is the first step of nitrification carried out by ammonia-oxidizing Archaea (AOA) and Bacteria (AOB). Lake Superior and Erie are part of the Great Lakes system differing in trophic status with Lake Superior being oligotrophic and Lake ...
Annette Bollmann, George S Bullerjahn, Robert Michael McKay   +2 more
doaj   +1 more source

Biochar Addition Inhibits Nitrification by Shifting Community Structure of Ammonia-Oxidizing Microorganisms in Salt-Affected Irrigation-Silting Soil

Microorganisms, 2022
Biochar has been widely recognized as an effective and eco-friendly ameliorant for saline soils, but information about the mechanism of how biochar influences nitrification in salt-affected agroecosystem remains fragmented.
Rong-Jiang Yao, Hong-Qiang Li, Jing-Song Yang, Xiang-Ping Wang, Wen-Ping Xie, Xing Zhang   +5 more
doaj   +1 more source

Serpentine Biocrust Microbes Maintain Nitrogen Cycling Under Drought and Heavy Metal Stress

Ecological Research, Volume 41, Issue 5, September 2026.
This study highlights the complex interplay between soil geochemistry and moisture availability in shaping microbial communities within wetter and drier serpentine and non‐serpentine biological soil crusts. It demonstrates that both factors influence the structure of nitrogen‐cycling microbial communities and the processes they mediate.
Sandra Barnard, Oluwatobi Barachiah, Stefan J. Siebert, Danielle Botha, Sarina Claassens   +4 more
wiley   +1 more source

Correlation between nitrate production rates and amoA abundance.

, 2015
Coefficients of determination (r2) for the correlation between the nitrate production rates and the number of amoA transcripts and genes. The coefficients were determined for the bacterial, archaeal or total summed amoA for either N-amended or non ...
Mathis Hjort Hjelmsø (734566), Bjarne Westergaard Strobel (734570), Morten Schostag Nielsen (734567), Carsten Suhr Jacobsen (734571), Louise Feld (734565), Paul Henning Krogh (734569), Anne Dorthe Jacobsen (734568), Regin Rønn (304567), Flemming Ekelund (304569)   +8 more
core   +1 more source

Differential Responses of Nitrifier and Denitrifier to Dicyandiamide in Short- and Long-Term Intensive Vegetable Cultivation Soils

Journal of Integrative Agriculture, 2014
Nitrification inhibitors, such as dicyandiamide (DCD), have been shown to decrease leaching from urea- and ammonium-based fertilizers in agricultural soils.
Yi LIU, Yang YANG, Hong-ling QIN, Yi-jun ZHU, Wen-xue WEI   +4 more
doaj   +1 more source

Can Organic Amendments Override Environmental Filtering of Soil Microbiomes? Evidence From 20 Years Old Agricultural Field Trials in Contrasting Tropical Sites

Global Change Biology, Volume 32, Issue 9, September 2026.
Across four long‐term Kenyan maize trials, site was the dominant driver of microbial community composition and N‐cycling gene abundance. Among organic amendments, farmyard manure most strongly enriched copiotrophic taxa and raised prokaryotic diversity.
Anna M. Visscher, Samuel Mathu Ndungu, Rafaela Feola Conz, Moritz Laub, Monicah Wanjiku Mucheru‐Muna, Daniel Mugendi, Rebecca Yegon, Frank Rasche, Wycliffe Waswa, Mirjam Pulleman, Bernard Vanlauwe, Johan Six, Martin Hartmann   +12 more
wiley   +1 more source