Dissolved-gas concentrations, physical and chemical properties of 41 ponds as well as key meteorological parameters in the Lena River Delta, Siberia


Ponds emit more methane per area than larger lakes. However, methane concentrations in and methane emissions from ponds show more spatial variability than larger waterbodies. A better understanding of this variability is needed to improve upscaling estimates of freshwater methane emissions. To this end, we studied 41 polygonal-tundra ponds on the islands Samoylov and Kurungakh in the Lena River Delta, northeast Siberia. The ponds fall into three geomorphological types with distinct differences in drivers of methane concentrations: polygonal-center ponds, ice-wedge ponds and larger merged-polygonal ponds. We collected water samples at different locations and depths in each pond and determined methane concentrations using gas chromatography. Additionally, we collected information on the geomorphology, vegetation cover as well as on key physical and chemical properties of the ponds and combined them with meteorological data to identify drivers of surface-water methane concentrations.

DOI https://doi.org/10.1594/PANGAEA.922399
Related Identifier https://doi.org/10.3389/feart.2021.617662
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.922399
Creator Rehder, Zoé; Zaplavnova, Anna; Kutzbach, Lars
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2020
Funding Reference German Science Foundation, 390683824
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 820 data points
Discipline Earth System Research
Spatial Coverage (126.176W, 72.281S, 126.515E, 72.387N); Lena Delta
Temporal Coverage Begin 2019-07-23T00:00:00Z
Temporal Coverage End 2019-08-27T00:00:00Z