Results 41 to 50 of about 1,535 (168)

Microbial Activity in Subterranean Ecosystems: Recent Advances

Applied Sciences, 2020
Of the several critical challenges present in environmental microbiology today, one is the assessment of the contribution of microorganisms in the carbon cycle in the Earth-climate system.
Tamara Martin-Pozas, Jose Luis Gonzalez-Pimentel, Valme Jurado, Soledad Cuezva, Irene Dominguez-Moñino, Angel Fernandez-Cortes, Juan Carlos Cañaveras, Sergio Sanchez-Moral, Cesareo Saiz-Jimenez   +8 more
doaj   +1 more source

Role of methanotrophy in a high‐methane emitting thermokarst lake

Limnology and Oceanography, Volume 71, Issue 9, September 2026.
Abstract Thermokarst (thaw) lakes are projected to be an increasing source of atmospheric methane (CH4), a potent greenhouse gas, as climate warms and permafrost thaws. However, the magnitude of CH4 cycling, particularly the role of aerobic CH4 oxidation (methanotrophy), among thermokarst lakes, is not well constrained.
Teresa Aguirrezabala‐Cámpano, Katey Walter Anthony, Frederic Thalasso, Pablo Inchausti, Natalie Tyler   +4 more
wiley   +1 more source

Methane‐limited methanotrophy in tidal freshwater swamps [PDF]

Global Biogeochemical Cycles, 2002
We investigated the relationship between CH4 production and oxidation in two tidal freshwater wetland forests in order to determine whether CH4 oxidation efficiency was limited by O2 or CH4. Methane oxidation was measured in situ over a 16‐month period with bi‐monthly applications of the inhibitor CH3F.
J. Patrick Megonigal, William. H. Schlesinger   +1 more
openaire   +1 more source

Higher methanotroph abundance and bottom‐water methane in ponds with floating photovoltaic arrays

Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.
Abstract Floating photovoltaic (FPV) arrays alter the methane (CH4) cycling dynamics of waterbodies on which they are deployed. Here, we investigated dissolved CH4 dynamics and associated CH4 cycling microbial communities (methanogens and methanotrophs) in the 2nd year of FPV deployment (70% aerial coverage) in experimental ponds.
Nicholas E. Ray, Sophia Aredas, Steven M. Grodsky, Ash Canino, Simone J. Cardoso, Meredith A. Holgerson, Meredith Theus, Marian L. Schmidt   +7 more
wiley   +1 more source

Root oxygen mitigates methane fluxes in tropical peatlands

Environmental Research Letters, 2020
Tropical peatlands are a globally important source of methane, a potent greenhouse gas. Vegetation is critical in regulating fluxes, providing a conduit for emissions and regular carbon inputs.
Nicholas T Girkin, Christopher H Vane, Benjamin L Turner, Nicholas J Ostle, Sofie Sjögersten   +4 more
doaj   +1 more source

Viability of enhancing methanotrophy in terrestrial ecosystems exposed to low concentrations of methane

Communications Earth & Environment
Methane is a potent but relatively short-lived greenhouse gas, with anthropogenic and natural sources and rapidly increasing atmospheric concentrations.
Eric A. Davidson, Danielle R. Monteverde, Jeremy D. Semrau   +2 more
doaj   +1 more source

Seasonal Variation in Carbon Dynamics in the Lower Tocantins River: Influence of Discharge and Environmental Drivers

River Research and Applications, Volume 42, Issue 7, Page 1604-1617, September 2026.
ABSTRACT Tropical rivers play a key role in regional carbon budgets, yet greenhouse gas (GHG) dynamics in regulated systems remain poorly understood. This study investigates the seasonal variability of carbon dioxide (CO2) and methane (CH4) concentrations, isotopic composition (δ13C), and river‐atmosphere fluxes in the lower Tocantins River, a ...
Maria Gabriella da S. Araújo, Vania Neu, Victor M. Guedes, Marcelo Z. Moreira, Nicholas D. Ward, Alex V. Krusche   +5 more
wiley   +1 more source

Rapid Reactivation of Deep Subsurface Microbes in the Presence of C-1 Compounds

Microorganisms, 2015
Microorganisms in the deep biosphere are believed to conduct little metabolic activity due to low nutrient availability in these environments. However, destructive penetration to long-isolated bedrock environments during construction of underground waste
Pauliina Rajala, Malin Bomberg, Riikka Kietäväinen, Ilmo Kukkonen, Lasse Ahonen, Mari Nyyssönen, Merja Itävaara   +6 more
doaj   +1 more source

Automated Daily Measurements of Soil Pore Space CO2 and O2: Signals Revealing Soil Physical and Biogeochemical Processes

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 9, September 2026.
Abstract There is a need to understand and monitor active soil processes in the field; however, it is challenging to observe and separate co‐occurring belowground processes. High precision monitoring of soil pore space gases is a potentially powerful approach, complicated by the variety of biological and physical processes that impact gas.
Timothy M. Gallagher, Jason Dahlberg, Kyle E. Smart, Nicole Czwakiel, Morgan Mellum, Daniel O. Breecker   +5 more
wiley   +1 more source

Methanotrophy below pH 1 by a new Verrucomicrobia species

Nature, 2007
Mud volcanoes, mudpots and fumaroles are remarkable geological features characterized by the emission of gas, water and/or semi-liquid mud matrices with significant methane fluxes to the atmosphere (10(-1) to 10(3) t y(-1)). Environmental conditions in these areas vary from ambient temperature and neutral pH to high temperatures and low pH.
POL A., HEIJMANS K., HARHANGI H., TEDESCO, Dario, JETTEN M., OP DEN CAMP H.   +5 more
openaire   +3 more sources