ArticleProceedings of the National Academy of Sciences of the United States of America2014
Anaerobic methane oxidation coupled to denitrification is the dominant methane sink in a deep lake.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.
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Who cites it
46 citing papers in PubMed, 249 citations in OpenAlex.
- A Diffusion-Driven CH4-O2 Boundary Structures Methane Oxidation and Carbon Transformation in Upland Soils.Environmental science & technology · 2026Article
- Globally doubled methane emissions from nutrient-enriched rivers.National science review · 2026Article
- Methanotrophs and methane oxidation in cold wetlands: distribution, ecology, and mechanisms.ISME communications · 2026Review
- Electron acceptors modulate methane oxidation and active methanotrophic communities in anoxic urban wetland sediments.Applied and environmental microbiology · 2025Article
- Nitrite-dependent microbial utilization for simultaneous removal of sulfide and methane in sewers.Water research X · 2024Article
- Persistent activity of aerobic methane-oxidizing bacteria in anoxic lake waters due to metabolic versatility.Nature communications · 2024Article
- Spatio-temporal variations of methane fluxes in sediments of a deep stratified temperate lake.iScience · 2024Article
- Organic matter lability modifies the vertical structure of methane-related microbial communities in lake sediments.Microbiology spectrum · 2023Article
- Anthropogenic activities mediate stratification and stability of microbial communities in freshwater sediments.Microbiome · 2023Article
- Water column dynamics control nitrite-dependent anaerobic methane oxidation by Candidatus "Methylomirabilis" in stratified lake basins.The ISME journal · 2023Article
- A novelmLife · 2022Article
- SSThe coexistence and diversity of Candidatus methylomirabilis oxyfera-like and anammox bacteria in sediments of an urban eutrophic lake.International microbiology : the official journal of the Spanish Society for Microbiology · 2022Article
- NOEnvironmental science and pollution research international · 2022Article
- Multiple Groups of Methanotrophic Bacteria Mediate Methane Oxidation in Anoxic Lake Sediments.Frontiers in microbiology · 2022Article
- Amsterdam urban canals contain novel niches for methane-cycling microorganisms.Environmental microbiology · 2022Article
- Article
- Seasonal Dynamics of Abundance, Structure, and Diversity of Methanogens and Methanotrophs in Lake Sediments.Microbial ecology · 2021Article
- Methanotrophs: Discoveries, Environmental Relevance, and a Perspective on Current and Future Applications.Frontiers in microbiology · 2021Review
- Methane distribution patterns along a transect of Lake Fuxian, a deep oligotrophic lake in China.Environmental science and pollution research international · 2020Article
- Trace Metal Availability Affects Greenhouse Gas Emissions and Microbial Functional Group Abundance in Freshwater Wetland Sediments.Frontiers in microbiology · 2020Article
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Authors and funding
4 authors at 2 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Anaerobic methane oxidation coupled to denitrification, also known as "nitrate/nitrite-dependent anaerobic methane oxidation" (n-damo), was discovered in 2006. Since then, only a few studies have identified this process and the associated microorganisms in natural environments. In aquatic sediments, the close proximity of oxygen- and nitrate-consumption zones can mask n-damo as aerobic methane oxidation. We therefore investigated the vertical distribution and the abundance of denitrifying methanotrophs related to Candidatus Methylomirabilis oxyfera with cultivation-independent molecular techniques in the sediments of Lake Constance. Additionally, the vertical distribution of methane oxidation and nitrate consumption zones was inferred from high-resolution microsensor profiles in undisturbed sediment cores. M. oxyfera-like bacteria were virtually absent at shallow-water sites (littoral sediment) and were very abundant at deep-water sites (profundal sediment). In profundal sediment, the vertical distribution of M. oxyfera-like bacteria showed a distinct peak in anoxic layers that coincided with the zone of methane oxidation and nitrate consumption, a strong indication for n-damo carried out by M. oxyfera-like bacteria. Both potential n-damo rates calculated from cell densities (660-4,890 µmol CH4⋅m(-2)⋅d(-1)) and actual rates calculated from microsensor profiles (31-437 µmol CH4⋅m(-2)⋅d(-1)) were sufficiently high to prevent methane release from profundal sediment solely by this process. Additionally, when nitrate was added to sediment cores exposed to anoxic conditions, the n-damo zone reestablished well below the sediment surface, completely preventing methane release from the sediment. We conclude that the previously overlooked n-damo process can be the major methane sink in stable freshwater environments if nitrate is available in anoxic zones.
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