Results 121 to 130 of about 273,232 (207)

Influence of soil properties on archaeal diversity and distribution in the McMurdo Dry Valleys, Antarctica [PDF]

open access: yes, 2014
Archaea are the least understood members of the microbial community in Antarctic mineral soils. Although their occurrence in Antarctic coastal soils has been previously documented, little is known about their distribution in soils across the McMurdo Dry ...
Barrett, John E.   +5 more
core   +1 more source

Benthic Ammonia Oxidizers Differ in Community Structure and Biogeochemical Potential Across a Riverine Delta

open access: yesFrontiers in Microbiology, 2015
Nitrogen pollution in coastal zones is a widespread issue, particularly in ecosystems with urban or agricultural watersheds. California’s Sacramento-San Joaquin Delta, at the landward reaches of San Francisco Bay, is highly impacted by both agricultural ...
Julian eDamashek   +5 more
doaj   +1 more source

Genome Sequence of an Ammonia-Oxidizing Soil Archaeon, “Candidatus Nitrosoarchaeum koreensis” MY1

open access: yes, 2011
Ammonia-oxidizing archaea are ubiquitous microorganisms which play important roles in global nitrogen and carbon cycle on earth. Here we present the high-quality draft genome sequence of an ammonia-oxidizing archaeon, “ Candidatus
Byung Kwon Kim   +10 more
core   +1 more source

Evolution of ammonia-oxidizing archaea related to global events

open access: yes, 2020
Ammonia-oxidizing archaea (AOA) are chemolithoautotrophs that dominate nitrification in today's low ammonium ocean, playing critical roles in the global nitrogen cycle, alongside ammonia-oxidizing bacteria (AOB) that favor higher ammonium environments ...
Cao, Zhiwei   +7 more
core   +1 more source

Effect of Nicotine on Soil Microbiota and Nitrification in a Microcosm Experiment

open access: yesAgronomy
Tobacco cultivation leads to nicotine accumulation in soil, but how nicotine affects soil nitrification and ammonia-oxidizing microorganisms remains poorly understood.
Lin Zhang, Qing X. Li, Guitong Li
doaj   +1 more source

Diversity and abundance of ammonia-oxidizing archaea in the Dongjiang River, China

open access: yesMicrobiological Research, 2011
Nitrification in aquatic ecosystems plays a crucial role in the global nitrogen cycling. It has been widely accepted that ammonia-oxidizing bacteria (AOB) are responsible for nitrification. However, this concept is currently challenged by the ubiquity of ammonia-oxidizing archaea (AOA) in various environments, such as in aquatic and terrestrial ...
Liu, Zhenghui   +4 more
openaire   +2 more sources

Effects of Zeolite and Biochar Addition on Ammonia-Oxidizing Bacteria and Ammonia-Oxidizing Archaea Communities during Agricultural Waste Composting

open access: yes, 2020
The effects of zeolite and biochar addition on ammonia-oxidizing bacteria (AOB) and archaea (AOA) communities during agricultural waste composting were determined in this study.
Liheng Ren   +3 more
core   +1 more source

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

open access: yesFrontiers 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   +3 more
doaj   +1 more source

Quantitative analyses of ammonia-oxidizing Archaea and bacteria in the sediments of four nitrogen-rich wetlands in China

open access: yes, 2011
With the rapid development of ammonia-synthesizing industry, the ammonia-nitrogen pollution in wetlands acting as the sink of point and diffuse pollution has been increased dramatically.
Wang, Shanyun   +9 more
core   +1 more source

Response of Nitrification and Crop Yield to the Presence of NBPT and DCD in a Wheat-Corn Double Cropping System

open access: yesAgronomy
The excessive application of nitrogen fertilizer aggravated the loss of nitrogen in farmland and exerted detrimental effects on the soil and water environment. Examining the effects of N-(n-Butyl)thiophosphoric triamide (NBPT) and nitrification inhibitor
Zhaoqi Qu   +11 more
doaj   +1 more source

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