(Table 1) Methane concentrations, MOX rates and MOB abundance in arctic aquatic ecosystems of the Lena Delta, Northeast Siberia

Large amounts of organic carbon are stored in Arctic permafrost environments, and microbial activity can potentially mineralize this carbon into methane, a potent greenhouse gas. In this study, we assessed the methane budget, the bacterial methane oxidation (MOX) and the underlying environmental controls of arctic lake systems, which represent substantial sources of methane. Five lake systems located on Samoylov Island (Lena Delta, Siberia) and the connected river sites were analyzed using radiotracers to estimate the MOX rates, and molecular biology methods to characterize the abundance and the community composition of methane-oxidizing bacteria (MOB). In contrast to the river, the lake systems had high variation in the methane concentrations, the abundance and composition of the MOB communities, and consequently, the MOX rates. The highest methane concentrations and the highest MOX rates were detected in the lake outlets and in a lake complex in a floodplain area. […]

Data and Resources

Dataset extent

Map data © OpenStreetMap contributors
Source https://doi.pangaea.de/10.1594/PANGAEA.861845
Version 1.0
Citation None
Authors
  • Author Name: Roman Osudar
Temporal coverage
  • Temporal coverage start: 2012-07-20T00:00:00
Spatial coverage { "coordinates": [ [ [ 126.5265, 72.3668 ], [ 126.5265, 72.3916 ], [ 126.4697, 72.3916 ], [ 126.4697, 72.3668 ], [ 126.5265, 72.3668 ] ] ], "type": "Polygon" }
Station research-station-samoylov-island
Collaborator
Variable measured
  • Variable name: Lake
Measurement Technique
    Date published 2016-06-20
    Date modified
    Status
    Publisher
    • Publisher name: PANGAEA  Publisher URL: https://www.pangaea.de/
    Provider
    License https://creativecommons.org/licenses/by/3.0/