Results 51 to 60 of about 1,535 (168)

Red to Green: A Lipid Biomarker Record of Tonian‐Ediacaran Algae in Siberia

Geobiology, Volume 24, Issue 5, September/October 2026.
ABSTRACT Multiple lines of evidence point to a major diversification of Eukarya in the late Tonian period, ca. 800–720 Ma ago. Regular steranes, lipid biomarkers primarily sourced from eukaryotes, are first unambiguously reported from multiple sites. Here, we present lipid biomarker stratigraphic records from two drill‐cores from the Lena‐Anabar Basin ...
Adriana I. Rizzo, Andrey Bekker, Anton B. Kuznetsov, Victoria B. Ershova, Yijun Xiong, Karl E. Karlstrom, Simon W. Poulton, Gordon D. Love   +7 more
wiley   +1 more source

Microbial hauberks: composition and function of surface layer proteins in gammaproteobacterial methanotrophs

Applied and Environmental Microbiology
Many species of proteobacterial methane-consuming bacteria (methanotrophs) form a hauberk-like envelope represented by a surface (S-) layer protein (SLP) matrix.
Richard Hamilton, William Gebbie, Chynna Bowman, Alex Mantanona, Marina G. Kalyuzhnaya   +4 more
doaj   +1 more source

Origin of Sedimentary BHPs Along a Mississippi River–Gulf of Mexico Export Transect: Insights From Spatial and Density Distributions

Frontiers in Marine Science, 2019
We investigated the origin of sedimentary bacteriohopanepolyols (BHPs) in low-density (<1.6 g cm–3), mesodensity (1.6–2.0 and 2.0–2.5 g cm–3) and high-density fractions (>2.5 g cm–3) as well as unfractionated bulk samples in a highly dynamic ...
Stephanie Kusch, Julio Sepúlveda, Stuart G. Wakeham   +2 more
doaj   +1 more source

State-of the-Art Constraint-Based Modeling of Microbial Metabolism: From Basics to Context-Specific Models with a Focus on Methanotrophs

Microorganisms, 2023
Methanotrophy is the ability of an organism to capture and utilize the greenhouse gas, methane, as a source of energy-rich carbon. Over the years, significant progress has been made in understanding of mechanisms for methane utilization, mostly in ...
Mikhail A. Kulyashov, Semyon K. Kolmykov, Tamara M. Khlebodarova, Ilya R. Akberdin   +3 more
doaj   +1 more source

Species‐level controls of foliar methane and nitrous oxide fluxes: roles of traits and microbes in temperate trees

New Phytologist, Volume 251, Issue 6, Page 3221-3237, September 2026.
Species‐level variation in temperate tree foliar greenhouse gas exchange, showing consistent foliar CH4 uptake, N2O emission, stronger CH4 uptake in fall leaves, and contrasting methanotroph communities between the high‐CH4‐oxidizing species Tilia americana and the low‐CH4‐oxidizing species Prunus virginiana. Summary The contribution of tree foliage to
Md Rezaul Karim, Sean C. Thomas
wiley   +1 more source

Contrasting temporal drivers of methane flux across land uses in freshwater wetlands

Limnology and Oceanography, Volume 71, Issue 8, August 2026.
Abstract Wetlands are collectively the largest natural source of methane (CH4), which complicates the climate mitigation potential of wetland restoration. Land‐use change alters wetland soils, vegetation, and hydrology, but the impact of this disturbance legacy on CH4 fluxes from restored wetlands is uncertain.
Graham A. Stewart, Michael R. Williams, Gregory W. McCarty, Margaret A. Palmer   +3 more
wiley   +1 more source

Evaluating the contribution of methanotrophy kinetics to uncertainty in the soil methane sink

Environmental Research Letters
The oxidation of atmospheric methane by soil microbes is an important natural sink for a potent greenhouse gas. However, estimates of the current and future soil methane sink are highly uncertain. Here we assessed the extent to which methanotrophy enzyme
Hannah Dion-Kirschner, Newton H Nguyen, Christian Frankenberg, Woodward W Fischer   +3 more
doaj   +1 more source

Elevated Spring Methane Emissions in a Sub‐Arctic Peatland Fen

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 8, August 2026.
Abstract The Arctic boreal region is rapidly shifting in response to global climate change, including rapid warming and permafrost thaw. Year‐round monitoring of carbon fluxes in these regions is crucial to understanding seasonal and annual carbon budgets, including methane (CH4), a potent greenhouse gas with 80 times the warming potential of carbon ...
Marco N. Montemayor, Kyle A. Arndt, Patrick Murphy, Mario Tenuta, Susan M. Natali   +4 more
wiley   +1 more source

Spatial Partitioning of Microbial Functional Potential Suggests Complex Nitrogen Cycling in a Subterranean Estuary

Environmental Microbiology, Volume 28, Issue 8, August 2026.
Microbial communities in a Mediterranean subterranean estuary show spatially structured nitrogen‐cycling potential across hydrochemical zones. Microbial properties, more than environmental variables, predict NO2− and NH4+ concentrations, highlighting their key role in controlling nitrogen transformations prior to submarine groundwater discharge ...
Daniel Romano‐Gude, Nestor Arandia‐Gorostidi, Catalina Mena, Marc Diego‐Feliu, Bella Almillategui, Anna J. Székely, Stefan Bertilsson, Andrea G. Bravo, Jesus Carrera, Cristina Romera‐Castillo, Albert Folch, Jordi Garcia‐Orellana, Valentí Rodellas, Clara Ruiz‐González   +13 more
wiley   +1 more source

Extraordinary methane levels in a small bar‐built tropical estuary

Limnology and Oceanography Letters, Volume 11, Issue 4, July 2026.
Abstract Small estuaries link uplands and nearshore marine environments but are understudied in many regions. We quantified spatial and temporal variability in CH4, CO2, nutrients, and organic matter in a small, deep, bar‐built tropical estuary in Fajardo, Puerto Rico.
William H. McDowell, Tatiana Barreto‐Vélez, Ricardo Colón‐Rivera, Jody D. Potter   +3 more
wiley   +1 more source