Hughes-Allen, Lara; Bouchard, Frédéric; Séjourné, Antoine; Gandois, Laure (2020): Limnological properties of thermokarst lakes in Central Yakutia sampled between 2018-2019 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.919907
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Abstract:
This dataset compiles selected limnological properties of a series of thermokarst (thaw) lakes in Central Yakutia (Eastern Siberia). These properties were measured during fall 2018 (September), winter 2019 (March-April), spring 2019 (May), and summer 2019 (August). These data span four seasons (Fall, Winter, Spring, and Summer) 2018-2019. The lake type designation is based on field observations, past radiocarbon dating of lake sediments, geochemical signatures of lake waters, and a multiple-stage development model of thermokarst lakes. Data were collected at the surface (~ 30 cm depth) from lake shores. Specific conductivity (accuracy ±1% of reading), temperature (accuracy ±0.2°C), dissolved oxygen (accuracy ±1% of reading or 1% saturation) and pH (accuracy ±0.2) were measured using a YSI Pro DSS multiprobe sensor. Water samples were collected to analyze dissolved organic carbon (DOC). Samples were filtered using baked glass fiber filters (Whatman GF/F, 0. 7µm), acidified to pH 2 with ultra-pure HCl and stored in baked glass vials. DOC concentration was measured using a TOC-5000A analyzer (Shimadzu, Japan). The quantification limit was 1 mg L-1. Above this value, the analytical uncertainty was estimated at ±0.1 mg L-1. Reference material included ION-915 ([DOC]= 1.37 ± 0.41mg C L-1) and ION 96.4 ([DOC]= 4.64 ± 0.70 mg C L-1) (Environment and Climate Change Canada, Canada).
Keyword(s):
Supplement to:
Hughes-Allen, Lara; Bouchard, Frédéric; Séjourné, Antoine; Gandois, Laure (submitted): Seasonal patterns in greenhouse gas emissions from different types of thermokarst lakes in Central Yakutia (Eastern Siberia). Limnology and Oceanography
Coverage:
Median Latitude: 62.565944 * Median Longitude: 130.971366 * South-bound Latitude: 62.545200 * West-bound Longitude: 130.854700 * North-bound Latitude: 62.619200 * East-bound Longitude: 131.191000
Date/Time Start: 2018-01-01T00:00:00 * Date/Time End: 2019-12-31T00:00:00
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Season | Season | Hughes-Allen, Lara | |||
| 2 | Year of observation | Year obs | a AD | Hughes-Allen, Lara | ||
| 3 | Lake | Lake | Hughes-Allen, Lara | Lake number | ||
| 4 | Lake type | Lake type | Hughes-Allen, Lara | |||
| 5 | LATITUDE | Latitude | Hughes-Allen, Lara | Geocode | ||
| 6 | LONGITUDE | Longitude | Hughes-Allen, Lara | Geocode | ||
| 7 | Conductivity, specific | Cond | µS/m | Hughes-Allen, Lara | YSI Pro DSS multiprobe sensor | |
| 8 | Temperature, water | Temp | °C | Hughes-Allen, Lara | YSI Pro DSS multiprobe sensor | |
| 9 | Oxygen, dissolved | DO | % | Hughes-Allen, Lara | YSI Pro DSS multiprobe sensor | %Sat |
| 10 | pH | pH | Hughes-Allen, Lara | YSI Pro DSS multiprobe sensor | ||
| 11 | Carbon, organic, dissolved | DOC | mg/l | Hughes-Allen, Lara | TOC-5000A analyzer, Shimadzu, Japan |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
939 data points