Results 91 to 100 of about 15,618 (215)

Impact of ENSO on Nitrous Oxide Emissions in the Eastern Tropical Pacific

Global Biogeochemical Cycles, Volume 40, Issue 3, March 2026.
Abstract Nitrous oxide (N2O ${\mathrm{N}}_{2}\mathrm{O}$) is a powerful greenhouse gas, with the ocean contributing ∼4.2 Tg N y−1 to global N2O ${\mathrm{N}}_{2}\mathrm{O}$ emissions. The Eastern Tropical Pacific (ETP) is a hotspot of N2O ${\mathrm{N}}_{2}\mathrm{O}$ emissions due to high N2O ${\mathrm{N}}_{2}\mathrm{O}$ production under low‐oxygen ...
Jana Härri, Daniel McCoy, Meike Vogt, Daniele Bianchi, Nicolas Gruber   +4 more
wiley   +1 more source

Seasonality and depth distribution of the abundance and activity of ammonia oxidizing microorganisms in marine coastal sediments (North Sea) [PDF]

, 2014
Microbial processes such as nitrification and anaerobic ammonium oxidation (anammox) are important for nitrogen cycling in marine sediments. Seasonal variations of archaeal and bacterial ammonia oxidizers (AOA and AOB) and anammox bacteria, as well as ...
Bale, N.J., Hopmans, E.C., Lipsewers, Y.A., Schouten, S., Sinninghe Damsté, J.S., Villanueva, L.   +5 more
core   +2 more sources

Acidification Stimulates N2O Production by Oceanic Nitrifying Bacteria

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 3, March 2026.
Abstract Recent studies have shown changes in the production rates of nitrous oxide (N2O) in aerobic seawater in response to ocean acidification (OA). Understanding how N2O production responds to OA is crucial because N2O is a strong greenhouse gas and stratospheric ozone‐depleting substance emitted from the ocean.
Sakae Toyoda, Takeru Sato, Tatsuro Hirane, Tomoya Matsui, Taketomo Fujiwara, Naohiro Yoshida   +5 more
wiley   +1 more source

Metagenomic Evidence for the Presence of Comammox Nitrospira-Like Bacteria in a Drinking Water System

mSphere, 2016
We report metagenomic evidence for the presence of a Nitrospira-like organism with the metabolic potential to perform the complete oxidation of ammonia to nitrate (i.e., it is a complete ammonia oxidizer [comammox]) in a drinking water system.
Ameet J. Pinto, Daniel N. Marcus, Umer Zeeshan Ijaz, Quyen Melina Bautista-de lose Santos, Gregory J. Dick, Lutgarde Raskin   +5 more
doaj   +1 more source

Autotrophic growth of bacterial and archaeal ammonia oxidizers in freshwater sediment microcosms incubated at different temperatures

, 2013
Both bacteria and archaea potentially contribute to ammonia oxidation, but their roles in freshwater sediments are still poorly understood. Seasonal differences in the relative activities of these groups might exist, since cultivated archaeal ammonia ...
Conrad, R., Dumont, Marc, Hernandez Garcia, Marcela, Jia, Z., Ke, X., Wang, B., Wu, Y.   +6 more
core   +1 more source

Bacterial Active Community Cycling in Response to Solar Radiation and Their Influence on Nutrient Changes in a High-Altitude Wetland [PDF]

, 2016
Indexación: Web of Science; Scopus.Microbial communities inhabiting high-altitude spring ecosystems are subjected to extreme changes in solar irradiance and temperature throughout the diel cycle.
Dorador, C, Eissler, Y, Harrod, C, Hengst, M, Hernandez, K, Molina, V, Perez, V   +6 more
core   +2 more sources

Metagenomic Analysis of Thawing Permafrost Highlights Links Between Carbon and Nitrogen Cycling Processes in Abrupt Thaw Simulation

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 3, March 2026.
Abstract Abrupt permafrost thaw events are projected to contribute up to 40% of permafrost carbon (C) release to the atmosphere. They involve sudden hydrological shifts within the soil column; however, the exact microbial functional pathway shifts induced by these events remain cryptic. To investigate how C and nutrient cycling processes differ in thaw
M. Laurent, M. R. Baysinger, A. Bartholomäus, T. Windirsch, J. Strauss, T. Sanders, S. Liebner, C. Treat   +7 more
wiley   +1 more source

Nitrification and Nitrifying Bacteria in a Coastal Microbial Mat [PDF]

, 2015
The first step of nitrification, the oxidation of ammonia to nitrite, can be performed by ammonia-oxidizing archaea (AOA) or ammonium-oxidizing bacteria (AOB).
Bolhuis, H., Fan, H., Stal, L.J.
core   +1 more source

Hydrazine Synthase From Anammox Is Inhibited by Linear and Aromatic Alkynes

Environmental Microbiology, Volume 28, Issue 3, March 2026.
Linear and aromatic alkynes inhibit anammox in culture and in wetlands. The inhibition by alkynes is specific to the hydrazine synthase, a key enzyme in the anammox pathway. ABSTRACT N2O emissions by nitrifiers are often estimated using selective inhibitors, such as 1‐alkynes.
Cerys Maryan, Guylaine H. L. Nuijten, Andrew T. Crombie, Sebastian Lücker, Victoria Gibson, Marcela Hernández, J. Colin Murrell, Laura E. Lehtovirta‐Morley   +7 more
wiley   +1 more source

River Microbiomes as Sentinels of National‐Scale Freshwater Ecosystems

Global Change Biology, Volume 32, Issue 3, March 2026.
River biofilms are complex microbial assemblages that underpin aquatic food webs and play a central role in biogeochemical cycling. By responding to environmental signals over space and time, biofilm microbial communities can act as sensitive indicators of river health.
Amy C. Thorpe, Susheel Bhanu Busi, Jonathan Warren, Lindsay K. Newbold, Joe D. Taylor, Kerry Walsh, Daniel S. Read   +6 more
wiley   +1 more source