Spatio-temporal variations of methane fluxes in sediments of a deep stratified temperate lake.

ABSTRACT: Spatio-temporal variability of sediment-mediated methane (CH₄) production in freshwater lakes causes large uncertainties in predicting global lake CH₄ emissions under different climate change and eutrophication scenarios. We conducted extensive sediment incubation experiments to investigate CH₄ fluxes in Lake Stechlin, a deep, stratified temperate lake. Our results show contrasting spatial patterns in CH₄ fluxes between littoral and profundal sites. The littoral sediments, ∼33% of the total sediment surface area, contributed ∼86.9% of the annual CH₄ flux at the sediment-water interface. Together with sediment organic carbon quality, seasonal stratification is responsible for the striking spatial difference in sediment CH₄ pr

SUBMITTER: Kang M 

PROVIDER: S-EPMC11000008 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature