Results 1 to 10 of about 591 (127)

Substrate‐driven enrichment and eDNA metabarcoding reveal indigenous microbiomes in mangrove sediments with potential for ammonia and nitrite transformation

open access: yesJournal of the World Aquaculture Society, Volume 57, Issue 4, August 2026.
Abstract Effective management of ammonia and nitrite remains a major challenge in intensive shrimp aquaculture, where excessive nitrogen loading compromises water quality and animal health. Indigenous microbial communities inhabiting mangrove sediments are widely considered potential sources of ammonia‐ and nitrite‐transforming microorganisms; however,
Muhamad Amin   +7 more
wiley   +1 more source

Subsurface Production of Marine Derived Bacterial Tetraether Lipids: Implications for Paleoceanographic Reconstruction

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are widely used as paleoclimate proxies on land, yet their origin in marine environments remains incompletely constrained. Here, we analyze suspended particulate matter collected from five depths at an open‐ocean station in the northern South China Sea and provide depth‐resolved evidence
Jiaming Zhou   +9 more
wiley   +1 more source

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

open access: yesScientific 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   +13 more
doaj   +1 more source

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

open access: yesFrontiers 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   +10 more
doaj   +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

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

Biomanufacturing and Scale‐Up: Pathways to Biochemicals, Biofuels, and Biomaterials

open access: yes
Microbial Biotechnology, Volume 19, Issue 8, August 2026.
Carolina A. Barcelos   +6 more
wiley   +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

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

Comammox Nitrospira abundance and contribution to nitrification in a forested landscape

open access: yesEcosphere
Nitrification in terrestrial ecosystems is mediated by NH4+‐oxidizing bacteria (AOB) and archaea (AOA). Presently, we understand relatively little about how physiological capacities and environmental tolerances influence their community composition, and ...
Donald R. Zak, Rima A. Upchurch
doaj   +1 more source

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