ArticleFEMS microbiology ecology2024
Seasonal dynamics of the microbial methane filter in the water column of a eutrophic coastal basin.
Article in FEMS microbiology ecology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Long-Term Euxinia Restricts Microbial Methane Removal in Eutrophic Coastal Basins.Environmental science & technology · 2025Article
- Microbial Communities Drive Methane Fluxes From Floodplain Lakes-A Hydrological Gradient Perspective.Environmental microbiology · 2025Article
- Microbes Saving Lives and Reducing Suffering.Microbial biotechnology · 2025Article
- Eutrophication and Deoxygenation Drive High Methane Emissions from a Brackish Coastal System.Environmental science & technology · 2024Article
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Authors and funding
10 authors.
Funding
Abstract
In coastal waters, methane-oxidizing bacteria (MOB) can form a methane biofilter and mitigate methane emissions. The metabolism of these MOBs is versatile, and the resilience to changing oxygen concentrations is potentially high. It is still unclear how seasonal changes in oxygen availability and water column chemistry affect the functioning of the methane biofilter and MOB community composition. Here, we determined water column methane and oxygen depth profiles, the methanotrophic community structure, methane oxidation potential, and water-air methane fluxes of a eutrophic marine basin during summer stratification and in the mixed water in spring and autumn. In spring, the MOB diversity and relative abundance were low. Yet, MOB formed a methane biofilter with up to 9% relative abundance and vertical niche partitioning during summer stratification. The vertical distribution and potential methane oxidation of MOB did not follow the upward shift of the oxycline during summer, and water-air fluxes remained below 0.6 mmol m-2 d-1. Together, this suggests active methane removal by MOB in the anoxic water. Surprisingly, with a weaker stratification, and therefore potentially increased oxygen supply, methane oxidation rates decreased, and water-air methane fluxes increased. Thus, despite the potential resilience of the MOB community, seasonal water column dynamics significantly influence methane removal.
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