Results 101 to 110 of about 285,336 (221)

Epixylic microbial communities as key regulators of methane emissions from submerged wood in a tropical hydroelectric reservoir

open access: yesLimnology and Oceanography, Volume 71, Issue 3, March 2026.
Abstract Tropical hydroelectric reservoirs are recognized hotspots for greenhouse gas emissions, yet the role of submerged forests in these emissions remains poorly understood. In this study, we investigated the contribution of standing dead trees and their associated epixylic biofilms to methane (CH4) and carbon dioxide (CO2) emissions in the ...
Fanny Colas   +12 more
wiley   +1 more source

Assessing the influence of the carbon oxidation-reduction state on organic pollutant biodegradation in algal-bacterial photobioreactors [PDF]

open access: yes, 2011
The influence of the carbon oxidation-reduction state (CORS) of organic pollutants on their biodegradation in enclosed algal-bacterial photobioreactors was evaluated using a consortium of enriched wild-type methanotrophic bacteria and microalgae. Methane,
Bahr, M.   +4 more
core   +3 more sources

Substrate Addition Alters Carbon Dioxide and Methane Exchange in Incubation Experiments of Canadian Peatland Soils

open access: yesGlobal Biogeochemical Cycles, Volume 40, Issue 3, March 2026.
Abstract Substrates added to peatland soils through anthropogenic disturbance alter carbon cycling and can shift these ecosystems from sinks to sources of atmospheric carbon. Isolating the direct influence these substrates have on peatland carbon cycling can be a challenge in field‐based studies due to interacting effects of vegetation and ...
Marissa A. Davies   +3 more
wiley   +1 more source

Rare bacteriohopanepolyols as markers for an autotrophic, intra-aerobic methanotroph [PDF]

open access: yesGeochimica et Cosmochimica Acta, 2014
Bacteriohopanepolyols (BHPs) and their diagenetic products, hopanoids, are of great interest for their potential as biomarker lipids in both present day environments as well as in the geological record. Specific structural features such as methylation of the A-ring, and number and type of functional groups of C35 BHPs have been held characteristic for ...
Kool DM   +4 more
openaire   +6 more sources

Diversity of active root-associated methanotrophs of three emergent plants in a eutrophic wetland in northern China

open access: yesAMB Express, 2020
Root-associated aerobic methanotrophs play an important role in regulating methane emissions from the wetlands. However, the influences of the plant genotype on root-associated methanotrophic structures, especially on active flora, remain poorly ...
Jing Cui   +6 more
doaj   +1 more source

Diversity and potential activity of methanotrophs in high methane-emitting permafrost thaw ponds. [PDF]

open access: yesPLoS ONE, 2017
Lakes and ponds derived from thawing permafrost are strong emitters of carbon dioxide and methane to the atmosphere, but little is known about the methane oxidation processes in these waters.
Sophie Crevecoeur   +4 more
doaj   +1 more source

Trace Metal Requirements for Microbial Enzymes Involved in the Production and Consumption of Methane and Nitrous Oxide [PDF]

open access: yes, 2012
Fluxes of greenhouse gases to the atmosphere are heavily influenced by microbiological activity. Microbial enzymes involved in the production and consumption of greenhouse gases often contain metal cofactors.
Jennifer B. Glass, Victoria J. Orphan
core   +2 more sources

Constraining Greenhouse Gas Cycling and Emissions in Africa's Largest Humic Lake

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 131, Issue 3, March 2026.
Abstract Humic tropical lakes and wetlands are globally important sources of atmospheric greenhouse gases (GHGs). However, mechanistic insight into GHG cycling in such systems remains limited—especially in understudied central Africa. To address this, here we measured high‐, falling‐, and low‐water seasonal concentrations and isotopic compositions of ...
M. Barthel   +16 more
wiley   +1 more source

Ammonium Impacts Methane Oxidation and Methanotrophic Community in Freshwater Sediment

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
Lacustrine ecosystems are regarded as one of the important natural sources of greenhouse gas methane. Aerobic methane oxidation, carried out by methane-oxidizing bacteria, is a key process regulating methane emission.
Yuyin Yang   +4 more
doaj   +1 more source

Graminoids Increase Greenhouse Gas Emissions From Thawed Permafrost at the End of the Growing Season

open access: yesGlobal Change Biology, Volume 32, Issue 3, March 2026.
Field study investigating whether and to which degree graminoids further reduce soil redox and lead to more greenhouse gas emissions from thawing permafrost soil on top of hydrology and anoxia effects. Graminoids, thus, contribute to thawed permafrost soils turning to C sources rather than sinks toward the end of the growing season.
Marie Mollenkopf   +9 more
wiley   +1 more source

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