Methane fluxes, soil gas profiles and microbial activities in ponds at Samoylov, 2002 & 2013

Knoblauch, Christian; Spott, Oliver; Evgrafova, Svetlana; Kutzbach, Lars; Pfeiffer, Eva-Maria

Methane (CH4) production, oxidation, and emission were studied in ponds of the permafrost-affected polygonal tundra in northeast Siberia. Summer CH4 fluxes were measured with closed chambers at the margins of ponds vegetated by vascular plants and in their centers without vascular plants. Furthermore, CH4 and oxygen concentration gradients, stable carbon isotope signatures of dissolved and emitted CH4, and microbial CH4 production and CH4 oxidation were determined.

The data files give the basic field and laboratory data on five ponds in the northeast Siberian Arctic tundra on Samoylov. The files contain water and soil temperature data of the ponds, methane fluxes, measured with closed chambers in the centres without vascular plants and the margins with vascular plants, the contribution of plant mediated fluxes on total methane fluxes, the gas concentrations (methane and dissolved inorganic carbon, oxygen) in the soil and the water column of the ponds, microbial activities (methane production, methane oxidation, aerobic and anaerobic carbon dioxide production), total carbon pools in the different horizons of the bottom soils, soil bulk density, soil substance density, and soil porosity.

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Contact

Christian Knoblauch

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Data and Resources

Additional Info

Field Value
Identifier DOI: 10.1594/PANGAEA.853641
Project(s)
Institute University of Hamburg
Source https://doi.pangaea.de/10.1594/PANGAEA.853641
Publication Date 2015
Version 1.0
Product Methane Flux, δ13C methane, total organic carbon, oxygen saturation
Sensor chambers/gas chromatography, isotope ratio mass spectrometry, planar trace oxygen minisensor
Files
  1. Knoblauch_2015.zip
Variables [Units]
  1. Latitude: [°N]
  2. Longitude: [°E]
  3. Comment
  4. Date/Time: Date and time
  5. Depth soil: Soil depth [m]
  6. CH4: Methane [mmol/l]
  7. CH4 std dev: Methane, standard deviation [±]
  8. DIC: Dissolved inorganic carbon [mmol/l]
  9. DIC std dev: Dissolved inorganic carbon, standard deviation [±]
  10. δ13C CH4: δ13C, methane [‰ PDB]
  11. δ13C CH4 std dev: δ13C methane, standard deviation [±]
  12. δ13C DIC: δ13C, dissolved inorganic carbon [‰ PDB]
  13. δ13C DIC std dev: δ13C, dissolved inorganic carbon, standard deviation [±]
  14. DEPTH, water [m] (Depth water)
  15. CH4 flux: Methane flux [mg m-2 d-1]
  16. CH4 flux std dev: Methane flux standard deviation [±]
  17. CH4 prod: Methane production rate [µmol/cm**3/day]
  18. CH4 prod std dev: Methane production rate standard deviation [±]
  19. MOX: Methane oxidation rate [µmol/cm**3/day]
  20. MOX std dev: Methane oxidation rate standard deviation [±]
  21. CO2 prod aerob: Aerobic carbon dioxide production [µmol/g/day]
  22. CO2 prod aerob std dev: Aerobic carbon dioxide production standard deviation [±]
  23. CO2 prod anaerob: Anerobic carbon dioxide production [µmol/g/day]
  24. CO2 prod anaerob std dev: Anaerobic carbon dioxide production standard deviation [±]
  25. O2 sat: Oxygen saturation [%]
  26. C. aquatilis s: Carex aquatilis shoot density [# m-2]
  27. C. chordorrhiza s: Carex chordorrhiza shoot density [# m-2]
  28. A. fulva s: Arctophila fulva, shoot density [# m-2]
  29. T soil: Soil temperature [°C]
  30. TOC: Total organic carbon [g m-2]
  31. TOC std dev: Total organic carbon standard deviation [±]
  32. DBD: Dry bulk density [g cm-3]
  33. DBD std dev: Dry bulk density standard deviation [±]
  34. Density subs: Mean substance density in horizon [g cm-3]
  35. Density subs std dev: Mean substance density in horizon standard deviation [±]
  36. Poros: Porosity [% vol]
  37. Temp: Temperature, water [°C]
  38. Depth water: Water depth [m]
Region Samoylov Island, Lena River Delta
Spatial Reference
Spatial Resolution Point based
Spatial Coverage Latitude 72.370710 to 72.373560, Longitude 126.485400 to 126.494940
Temporal Coverage 2001-08-08 to 2013-08-28
Temporal Resolution Discrete, Daily
Format TXT
Is Supplement To

Knoblauch, C et al. (2015): Regulation of methane production, oxidation, and emission by vascular plants and bryophytes in ponds of the northeast Siberian polygonal tundra. Journal of Geophysical Research: Biogeosciences, 120(12), 2525-2541, https://doi.org/10.1002/2015JG003053
Related to

Dataset extent