Researchers Identified Methane-Consuming Bacteria in Lakes
A new study reveals that bacteria living on microalgae eliminate over 70% of methane in surface waters.
Updated on Oct. 1, 2026 in Environmental
Live Poll
Do you believe natural biological processes provide sufficient mitigation for climate change concerns?
Scientists have discovered that methanotrophic bacteria colonizing the surface of microalgae play a critical role in methane oxidation within lakes. These bacteria consume methane as an energy source, effectively removing more than 70% of the gas dissolved in surface water.
Why it matters
Understanding this symbiotic process helps researchers predict how lakes will influence future methane emission trends. By leveraging the oxygen-carbon dioxide exchange between algae and bacteria, these ecosystems mitigate significant greenhouse gas releases.
The study utilized 503 distinct measurements across 79 African lakes to analyze bacterial methane oxidation. Oxidation successfully eliminates more than 70% of dissolved methane in surface waters through this microbial process.
The players
Science Advances
This is a peer-reviewed, open-access scientific journal published by the American Association for the Advancement of Science.
The details
Methanotrophic bacteria reside on the surface of microalgae, creating a beneficial exchange where algae provide necessary oxygen while the bacteria utilize methane for energy and biomass. In the Congo Basin, flooded forest soils further contribute to these high-oxidation environments.
Timeline
The study findings were published in the journal Science Advances on October 1, 2026.
The Big Picture
This discovery provides critical field data that updates and refines the existing methane reduction variables used in the IPCC global methane emission modeling protocols. The findings mark a shift in understanding how freshwater ecosystems act as natural filters for greenhouse gases.
This research provides a more accurate baseline for calculating the climate impact of freshwater bodies globally. These insights could lead to improved environmental policy and more effective climate change mitigation strategies in the future.
The takeaway
The symbiotic relationship between algae and bacteria serves as a powerful natural mechanism for regulating greenhouse gas concentrations in aquatic environments. Identifying these biological processes is essential for improving the accuracy of climate forecasting models.
Further reading
Learn more about the latest research in the Environmental section.
Source note: This article includes information reported by Earth.
Live Poll
Do you believe natural biological processes provide sufficient mitigation for climate change concerns?
