Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Coastal ecosystems dominate oceanic methane (CH4) emissions. However, there is limited knowledge about how biotic interactions between infauna and aerobic methanotrophs (i.e. CH4 oxidizing bacteria) drive the spatial-temporal dynamics of these emissions. Here, we investigated the role of meio- and macrofauna in mediating CH4 sediment-water fluxes and aerobic methanotrophic activity that can oxidize significant portions of CH4. We show that macrofauna increases CH4 fluxes by enhancing vertical solute transport through bioturbation, but this effect is somewhat offset by high meiofauna abundance. The increase in CH4 flux reduces CH4 pore-water availability, resulting in lower abundance and activity of aerobic methanotrophs, an effect that counterbalances the potential stimulation of these bacteria by higher oxygen flux to the sediment via bioturbation. These findings indicate that a larger than previously thought portion of CH4 emissions from coastal ecosystems is due to faunal activity and multiple complex interactions with methanotrophs.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10942774 | PMC |
| http://dx.doi.org/10.1093/ismejo/wrae013 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Distinct Microbial Communities Within and On Seep Carbonates Support Long-term Anaerobic Oxidation of Methane and Divergent pMMO Diversity.
ISME J
September 2025
Division of Biology and Biological Engineering, California Institute of Technology Pasadena, California, United States.
At methane seeps worldwide, syntrophic anaerobic methane-oxidizing archaea and sulfate-reducing bacteria promote carbonate precipitation and rock formation, acting as methane and carbon sinks. Although maintenance of anaerobic oxidation of methane (AOM) within seep carbonates has been documented, its reactivation upon methane exposure remains uncertain. Surface-associated microbes may metabolize sulfide from AOM, maintain carbonate anoxia, contribute to carbonate dissolution, and support higher trophic levels; however, these communities are poorly described.
View Article and Find Full Text PDFIncreased snowpack enhances ecological functions of cold-region constructed wetlands via plant-microbe interactions.
Water Res
August 2025
Key Laboratory of SFGA (SPA) on Conservation Ecology in the Northeast Tiger and Leopard National park & Jilin Provincial Key Laboratory of Wetland Ecological Functions and Ecological Security, College of Geography and Ocean Sciences, Yanbian University, Yanji, 133300, China.
Snowpack variations in cold regions exert profound influences on the ecological functioning of constructed wetlands (CWs), particularly with respect to GHG emissions and nutrient removal. However, the underlying mechanisms have yet to be clarified. This study established pilot-scale vertical subsurface flow CWs in Northeast China, with Phragmites australis and Iris sibirica, and applied doubled snowpack (DS) and natural snow cover (CK) during winter.
View Article and Find Full Text PDFSimultaneous denitrification and phosphorus removal in MBfR with methane as the sole carbon source.
J Environ Manage
August 2025
State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China. Electronic address:
Aerobic methane oxidation coupled to denitrification (AME-D) employed in membrane biofilm reactor (MBfR) is a promising strategy to reduce methane emission and enhance denitrification in wastewater treatment. However, focusing on enhancing nitrogen removal efficiency during AME-D has consistently overlooked the changes in phosphorus (P), and the underlying microbiome assembly mechanisms remain unclear. In this study, the MBfR was established to simultaneously enhance methane oxidation, denitrification, and P removal by the AME-D process under seasonal temperatures.
View Article and Find Full Text PDFWater mass mixing controls methane cycling and emission in highly hydrodynamic regions of the open ocean.
ISME Commun
January 2025
Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Qingdao 266100, China.
Ocean circulations and water mass exchange can exert significant influences on seawater biogeochemistry, microbial communities, and carbon cycling in marine systems. However, the detailed mechanisms of the impacts of physical processes in the open ocean on the cycle of greenhouse gases, particularly methane, remain poorly understood. In this study, we integrated high-resolution underway observations, experimental incubations, radioisotope labelling, and molecular analysis to constrain the controls of methanogenic pathways, methanotrophic activity, and emission fluxes in the highly hydrodynamic Kuroshio and Oyashio Extension (KOE) region of the Northwest Pacific.
View Article and Find Full Text PDFMethane Oxidation Potential and Niche Differentiation of Aerobic Methanotrophs in Coastal Mangrove Forest Soils along a 370 Km Long Coastline in Taiwan.
Environ Sci Technol
August 2025
Biodiversity Research Center, Academia Sinica, Taipei 11529, Taiwan.
Mangrove forests are key blue carbon ecosystems, but their net sink potential depends on methane oxidation in soils. In this study, DNA-based stable isotope probing was employed to decipher the changes of potentially active methanotrophic communities across five different mangrove forests along a 370 km coastline of Taiwan, with dominating the northern sites (Hsinchu and Miaoli) and dominating the central and southern sites (Changhua, Tainan, and Pingtung). The results showed that the CH oxidation potentials ranged from 10 to 60 nmol CH g hr in the mangrove forest soils.
View Article and Find Full Text PDF