Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1038/s42003-021-02365-x |
Licence  |
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| Title (Primary) | High concentrations of dissolved biogenic methane associated with cyanobacterial blooms in East African lake surface water |
| Author | Fazia, S.; Amalfitano, S.; Venturi, S.; Pacini, N.; Vazquez, S.; Olaka, L.A.; Tassi, F.; Crognale, S.; Herzsprung, P.; Lechtenfeld, O.J.
; Cabassi, J.; Capecchiacci, F.; Rossetti, S.; Yakimov, M.M.; Vaselli, O.; Harper, D.M.; Butturini, A. |
| Source Titel | Communications Biology |
| Year | 2021 |
| Department | SEEFO; ANA |
| Volume | 4 |
| Page From | art. 845 |
| Language | englisch |
| Topic | T5 Future Landscapes T9 Healthy Planet |
| Supplements | https://static-content.springer.com/esm/art%3A10.1038%2Fs42003-021-02365-x/MediaObjects/42003_2021_2365_MOESM1_ESM.pdf |
| Keywords | Carbon cycle; Microbial ecology |
| UFZ wide themes | ProVIS; |
| Abstract | The contribution of oxic methane production to greenhouse gas emissions from lakes is globally relevant, yet uncertainties remain about the levels up to which methanogenesis can counterbalance methanotrophy by leading to CH4 oversaturation in productive surface waters. Here, we explored the biogeochemical and microbial community variation patterns in a meromictic soda lake, in the East Africa Rift Valley (Kenya), showing an extraordinarily high concentration of methane in oxic waters (up to 156 μmol L-1). Vertical profiles of dissolved gases and their isotopic signature indicated a biogenic origin of CH4. A bloom of Oxyphotobacteria co-occurred with abundant hydrogenotrophic and acetoclastic methanogens, mostly found within suspended aggregates promoting the interactions between Bacteria, Cyanobacteria, and Archaea. Moreover, aggregate sedimentation appeared critical in connecting the lake compartments through biomass and organic matter transfer. Our findings provide insights into understanding how hydrogeochemical features of a meromictic soda lake, the origin of carbon sources, and the microbial community profiles, could promote methane oversaturation and production up to exceptionally high rates. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24686 |
| Fazia, S., Amalfitano, S., Venturi, S., Pacini, N., Vazquez, S., Olaka, L.A., Tassi, F., Crognale, S., Herzsprung, P., Lechtenfeld, O.J., Cabassi, J., Capecchiacci, F., Rossetti, S., Yakimov, M.M., Vaselli, O., Harper, D.M., Butturini, A. (2021): High concentrations of dissolved biogenic methane associated with cyanobacterial blooms in East African lake surface water Commun. Biol. 4 , art. 845 10.1038/s42003-021-02365-x |
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