en
Scientific article
Open access
English

Contribution of oxic methane production to surface methane emission in lakes and its global importance

Published inNature Communications, vol. 10, no. 5497
Publication date2019
Abstract

Recent discovery of oxic methane production in sea and lake waters, as well as wetlands, demands re-thinking of the global methane cycle and re-assessment of the contribution of oxic waters to atmospheric methane emission. Here we analysed system-wide sources and sinks of surface-water methane in a temperate lake. Using a mass balance analysis, we show that internal methane production in well-oxygenated surface water is an important source for surface-water methane during the stratified period. Combining our results and literature reports, oxic methane contribution to emission follows a predictive function of littoral sediment area and surface mixed layer volume. The contribution of oxic methane source(s) is predicted to increase with lake size, accounting for the majority (>50%) of surface methane emission for lakes with surface areas >1 km2.

Citation (ISO format)
GÜNTHEL, Marco et al. Contribution of oxic methane production to surface methane emission in lakes and its global importance. In: Nature Communications, 2019, vol. 10, n° 5497. doi: 10.1038/s41467-019-13320-0
Main files (1)
Article (Published version)
Identifiers
ISSN of the journal2041-1723
215views
77downloads

Technical informations

Creation10/27/2020 9:31:00 AM
First validation10/27/2020 9:31:00 AM
Update time03/15/2023 10:52:24 PM
Status update03/15/2023 10:52:24 PM
Last indexation05/05/2024 5:23:32 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack