Results 61 to 70 of about 1,348 (145)
It Takes a Village: Discovering and Isolating the Nitrifiers
It has been almost 150 years since Jean-Jacques Schloesing and Achille Müntz discovered that the process of nitrification, the oxidation of ammonium to nitrate, is a biological process carried out by microorganisms.
Christopher J. Sedlacek
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ABSTRACT Subsoiling is a common practice for improving soil structure and has recently been recognised for its potential to reduce nitrous oxide (N2O) emissions. However, its impact on nitrate (NO3−–N) leaching must also be considered if it is to be used as a mitigation strategy. This study investigated N2O emissions, NO3−–N leaching and grass yield in
Juan Liu +11 more
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Abstract The atmosphere may constitute the Earth's largest microbial ecosystem, yet it remains the least understood. While microorganisms can persist and may even thrive in the polyextremes of the Earth's atmosphere, it is still unknown whether the atmosphere sustains an active microbial community.
Eloi Martinez‐Rabert +6 more
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From the river coastal to the adjacent sea waters, the diversity characteristics, community assembly processes, functional potential and community compositions of sedimentary microbial communities exhibit significant changes with increasing salinity levels.
Zongxiao Zhang +7 more
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This study explored the use of sulfate‐based soil amendments as a new method to mitigate N2O—a powerful greenhouse gas—from agricultural soils. Laboratory and field experiments showed sulfate treatments significantly lowered N2O emissions without negatively affecting crop yields, mainly by altering soil microbial processes.
Hyun Ho Lee +11 more
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Sediments From a Seasonally Euxinic Coastal Ecosystem Show High Nitrogen Cycling Potential
The nitrogen cycling potential of sediments from seasonally euxinic Lake Grevelingen was investigated through incubation experiments and 16S rRNA amplicon and shotgun metagenome sequencing. The sediments have a high potential for nitrification, denitrification, and DNRA, but not for anammox. ABSTRACT Coastal ecosystems are susceptible to eutrophication
Isabel M. L. Rigutto +6 more
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Nitrification, the oxidative process converting ammonia to nitrite and nitrate, is driven by microbes and plays a central role in the global nitrogen cycle.
Arda Gülay +7 more
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Nitrogen Redox Controls on Greenhouse Gas Production in Yedoma Taliks
Arctic Yedoma permafrost holds large carbon and nitrogen pools that, when thawed, undergo microbially mediated processes that release greenhouse gases like methane and nitrous oxide. We analyzed seasonal shifts in microbial community dynamics and geochemistry in deep thawed soils (talik) and found year‐round methane production, with limited winter ...
Oded Bergman +3 more
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Linking Cell Size, Vmax and Km in Phototrophs and Chemotrophs: Insights From Bayesian Inference
Using scaling laws and Bayesian estimation, we inferred the relationship between cell size and uptake kinetics in chemotrophs, finding higher scaling exponents than in phytoplankton, suggesting additional factors influence microbial resource uptake. ABSTRACT Microbial growth is often described in terms of resource uptake rates, making the understanding
Risa Sasaki, Mayumi Seto
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Lithology can strongly influence soil's physical and chemical properties, significantly affecting soil nitrogen (N) transformation rates. Ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB) and complete ammonia oxidizers (comammox ...
Xiangyu Wan +6 more
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