Tischer, Jana; Zopfi, Jakob; Lepori, Fabio; Lehmann, Moritz F (2025): Incubation experiments with ¹⁵N-tracers in the water column of the Lake Lugano North Basin, Switzerland [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.977625
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Published: 2025-06-16 • DOI registered: 2025-07-15
Abstract:
In incubation experiments with ¹⁵N-labelled nitrate, without or with additional sulfide or acetate, we determined rates of denitrification, anammox, and dissimilatory nitrate reduction to ammonium to study nitrogen removal versus nitrogen recycling processes. Water column samples were collected from the meromictic Lake Lugano North Basin, Switzerland, during field campaigns in February 2017, October 2017, and April 2018, using Niskin bottles at depths between 95 and 105 m.
Keyword(s):
Supplement to:
Tischer, Jana; Lehmann, Moritz F; Su, Guangyi; Lepori, Fabio; Zopfi, Jakob (preprint): Microbial nitrogen removal versus recycling in the redox transition zone of a meromictic lake and its coupling to sulfur. https://doi.org/10.1101/2025.01.03.627289
Tischer, Jana; Zopfi, Jakob; Frey, Claudia; Venetz, Jessica; Giglio, Elena; Burgdorfer, Lukas; Rehmann, Oliver; Wankel, Scott D; Lehmann, Moritz F (preprint): Nitrogen and oxygen isotope effects during enzymatic nitrate reduction in vitro and by natural lake water consortia. https://doi.org/10.1101/2025.03.29.645582
Funding:
Swiss National Science Foundation (SNF), grant/award no. 153055: Seasonal Dynamics of fixed N elimination and its coupling with Sulfur and Carbon Cycling in the Redox Transition Zones of Lake Lugano
Coverage:
Latitude: 46.010472 * Longitude: 9.020806
Date/Time Start: 2017-10-17T00:00:00 * Date/Time End: 2018-04-25T00:00:00
Minimum DEPTH, water: 95 m * Maximum DEPTH, water: 105 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Tischer, Jana | Geocode – Date of water sampling and start of incubation | ||
| 2 | DEPTH, water | Depth water | m | Tischer, Jana | Geocode – Water used for experiment | |
| 3 | Nitrogen-15, tracer | 15N tracer | µmol/l | Tischer, Jana | Targeted initial concentration of 15[NO3]- tracer | |
| 4 | Nitrogen-15, tracer, fraction | 15N tracer frac | Tischer, Jana | Calculated | ||
| 5 | Treatment | Treat | Tischer, Jana | Additional substrate: none, H2S or NaAc | ||
| 6 | Treatment | Treat | Tischer, Jana | Additional substrate concentration in µmol/l | ||
| 7 | Nitrogen gas, 30N2, production | 30N2 prod | µmol/l/day | Tischer, Jana | 15N tracer incubations (Wenk et al. 2013) | |
| 8 | Nitrogen gas, 30N2, production, standard error | 30N2 prod std e | ± | Tischer, Jana | 15N tracer incubations (Wenk et al. 2013) | |
| 9 | Nitrogen gas, 29N2, production | 29N2 prod | µmol/l/day | Tischer, Jana | 15N tracer incubations (Wenk et al. 2013) | |
| 10 | Nitrogen gas, 29N2, production, standard error | 29N2 prod std e | ± | Tischer, Jana | 15N tracer incubations (Wenk et al. 2013) | |
| 11 | Ammonium-15, production | 15[NH4]+ prod | µmol/l/day | Tischer, Jana | IRMS, hypobromite method (Robertson et al. 2016) | |
| 12 | Ammonium-15, production, standard error | 15[NH4]+ prod std e | ± | Tischer, Jana | IRMS, hypobromite method (Robertson et al. 2016) | |
| 13 | Nitrogen gas, 30N2, production | 30N2 prod | % | Tischer, Jana | Calculated | Relative contribution of mass 30 dinitrogen gas production with respect to the combined production of mass 29 and mass 30 dinitrogen gas, and 15N-[NH4]+ |
| 14 | Nitrogen gas, 29N2, production | 29N2 prod | % | Tischer, Jana | Calculated | Relative contribution of mass 29 dinitrogen gas production with respect to the combined production of mass 29 and mass 30 dinitrogen gas, and 15N-[NH4]+ |
| 15 | Ammonium-15, production | 15[NH4]+ prod | % | Tischer, Jana | Calculated | Relative contribution of 15N-[NH4]+ production with respect to the combined production of mass 29 and mass 30 dinitrogen gas, and 15N-[NH4]+ |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
111 data points