https://doi.org/10.25678/0001KE

Data for: Growth and rapid succession of methanotrophs effectively limit methane release during lake overturn

Abstract Lakes and reservoirs contribute substantially to atmospheric concentrations of the potent greenhouse gas methane. Lacustrine sediments produce large amounts of methane, which accumulate in oxygen-depleted hypolimnia of stratified lakes. Due to climate change and progressing eutrophication, the number of lakes with hypolimnetic methane storage may increase in the future. However, whether stored methane eventually reaches the atmosphere during lake overturn is a matter of controversy and depends critically on the response of the methanotroph assemblage. We show that the methanotroph assemblage in a mixing lake undergoes a substantial bloom and ecological succession. As a result, the methane oxidation capacity of the mixed layer kept pace with the methane supplied from the hypolimnion and most of the stored methane was oxidized. Our work demonstrates a previously unknown component of freshwater methanotroph ecology illuminating the mechanisms limiting methane transfer from lakes to the atmosphere.

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Mayr, M. J., Zimmermann, M., Dey, J., Brand, A., Wehrli, B., & Bürgmann, H. (2019). Data for: Growth and rapid succession of methanotrophs effectively limit methane release during lake overturn [Data set]. Eawag: Swiss Federal Institute of Aquatic Science and Technology. https://doi.org/10.25678/0001KE

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The associated article

Mayr, M. J., M. Zimmermann, J. Dey, A. Brand, B. Wehrli, and H. Bürgmann (2020), Growth and rapid succession of methanotrophs effectively limit methane release during lake overturn, Communications Biology, 3(1), doi:10.1038/s42003-020-0838-z.

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Author	Mayr, Magdalena J. Zimmermann, Matthias Dey, Jason Brand, Andreas Wehrli, Bernhard Bürgmann, Helmut
Keywords	methane oxdiation,Methanotroph,Lake,lake mixing,microbial community,Environmental Metatranscriptomes,CARD-FISH,pmoA gene,pmoA mRNA
Variables	concentration dissolved_inorganic_carbon dissolved_oygen flow_cytometric_cell_counts methanotroph_cell_counts potential_methane_oxidation_rates salinity temperature
Substances (scientific names)	ammonium methane nitrate nitrite oxygen phosphate
Taxa (scientific names)	Methylococcales
Organisms (generic terms)	Bacteria Methane-oxidizing bacteria
Systems	freshwater lake water column
Timerange	2016-10 TO 2017-01
Geographic Name(s)	Rotsee
Review Level	general
Curator	Buergmann, Helmut
Contact	Helmut.Buergmann@eawag.ch
DOI	10.25678/0001KE