Methane Hydrates and Related Phenomena

Anaerobic methane oxidation by ANME-2a at 2 M chloride in the Orca Basin halocline

The paper investigates anaerobic methane oxidation in the Orca Basin, identifying ANME-2a's role at high salinity and revealing microbial communities involved in methane cycling.

Seafloor topography structures subseafloor microbial communities in the Puerto Rico Trench

This study shows that seafloor topography influences subseafloor microbial communities in the Puerto Rico Trench by shaping oxygen availability and organic matter distribution.

When seeps give ANME-SRB the cold shoulder: putative role of denitrification mediated methane oxidation in an Antarctic Cold Seep

The paper identifies methane oxidation mechanisms in Antarctic sediments, finding denitrification-mediated oxidation and aerobic methanotrophy as primary sinks instead of the typical ANME-SRB pathway.

Methane-producing microorganisms are widespread in surface waters and floating algal mats of inshore Baltic Sea habitats

The paper quantifies methane concentrations and microbial communities in Baltic Sea surface waters and algal mats, finding active methane production in oxygen-saturated environments.

DNA-SIP reveals salinity-associated niche differentiation of potentially active methanogens in mangrove soils

The paper uses DNA-SIP to identify active methanogens in mangrove soils under different salinity conditions and finds that methylotrophic and mixotrophic methanogens show niche differentiation based on environmental factors.

Potential for metal-coupled methane oxidation by Candidatus Methanocomedenaceae in coastal sediments

The paper investigates the genomic potential and ecophysiology of ANME-2a for metal-dependent anaerobic methane oxidation in coastal sediments, identifying two clusters with differing electron transfer capabilities.

Rapid ecosystem collapse and biofilter formation following seabed methane leakage

This study shows that seabed ecosystems rapidly collapse and form a methane biofilter after methane leakage from hydrates, with significant microbial and macrofaunal changes.

Cycling of sulfur redox intermediates drives microbial activity in the sulfate-methane transition zone of cold methane seeps

This study shows that sulfur redox intermediates sustain microbial activity in sulfate-limited methane seep sediments by driving sulfur transformations and anaerobic methane oxidation.

Dissolved inorganic carbon supports robust anabolism and methanogenesis in actively serpentinizing rocks

This study quantifies carbon assimilation in serpentinizing rocks, finding dissolved inorganic carbon supports robust microbial anabolism and methanogenesis even at high pH.

Sediment chemistry controls methane emissions from lake littoral zones

The paper investigates how sediment chemistry, specifically polyphenolic concentration, influences methane emissions from lake littoral zones by altering redox conditions and methanogen composition.

Diversity and single-cell activity of endolithic microbes in sediment-hosted carbonate nodules within and below the sulfate-methane transition zone

This study examines microbial communities in carbonate nodules and surrounding sediments within and below the sulfate-methane transition zone, revealing active endolithic microbes and their physiological responses to geochemical conditions.

Distinct Microbial Communities Within and On Seep Carbonates Support Long-term Anaerobic Oxidation of Methane and Novel pMMO Diversity

The paper investigates microbial communities within and on methane seep carbonates, revealing distinct diversity and activity patterns, including potential new pMMO diversity and reactivation of AOM under dynamic conditions.

Terrestrial Organic Matter Amplifies Methane Emissions Across Sediments of the Mississippi River Headwaters

The paper investigates how terrestrial organic matter increases methane production in sediments of the Mississippi River headwaters, highlighting microbial interactions driving this effect.

Microbial succession, community assembly and adaptation over five years in a newly discovered deep-sea cold seep

This study tracks microbial succession, community assembly, and adaptation over five years at a deep-sea cold seep, revealing shifts in community structure and functional adaptations.

Methane production from hydrocarbons by consortia dominated by ANME archaea

The paper tracks methane production from hydrocarbons using isotopic labeling and identifies ANME-2c archaea as potential methane producers in hydrocarbon-rich sediments.

Biogeochemical and omic evidence for paradoxical methane production via multiple co-occurring mechanisms in aquatic ecosystems

The paper identifies multiple co-occurring mechanisms of paradoxical methane production in aquatic ecosystems using experimental and omic approaches.

Comparative metagenomics of coalbed methane microbial communities reveals biogenic methane potential in the Appalachian Basin

The paper analyzes coalbed methane microbial communities in the Appalachian Basin using metagenomics to show their potential for biogenic methane production.