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Tischer, Jana; Zopfi, Jakob; Lepori, Fabio; Su, Guangyi; Giglio, Elena; Frey, Claudia; Lehmann, Moritz F (2025): Profiles of N, Fe, Mn and S compounds - concentrations and isotopes in the water column of the Lake Lugano North Basin, Switzerland [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.977623

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Published: 2025-06-16 • DOI registered: 2025-07-15

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Abstract:
We investigated the water column of the meromictic Lake Lugano North Basin, Switzerland, during 12 sampling campaigns between 2015 and 2018. At the deepest point of the lake, we sampled water between 75 and 165 m depth using Niskin bottles, and analyzed concentrations of N, S, and Fe species as well as isotope characteristics of nitrate.
Keyword(s):
15N-tracer; anammox; anoxic hypolimnion; Denitrification; dissimilatory nitrate reduction to ammonium; Lake; meromixis; nitrate; Nitrate isotopes; nitrate reduction; nitrification; Nitrogen; nitrogen cycle; nitrogen isotopes; oxycline; Sulfur; sulfur cycle; water column
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: 2015-02-17T10:30:00 * Date/Time End: 2018-04-25T15:00:00
Minimum DEPTH, water: 0.4 m * Maximum DEPTH, water: 284.0 m
Event(s):
LakeLugano * Latitude: 46.010472 * Longitude: 9.020806 * Date/Time Start: 2015-02-17T10:30:00 * Date/Time End: 2018-04-25T15:00:00 * Location: Switzerland * Method/Device: Multiple investigations (MULT) * Comment: 12 sampling campaigns between 2015 and 2018
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeTischer, JanaGeocode – Start timepoint of sampling
2DATE/TIMEDate/TimeTischer, JanaGeocode – End timepoint of sampling
3DEPTH, waterDepth watermTischer, JanaGeocode
4Iron, dissolvedFe dissµmol/lTischer, JanaICP-MS, Spectro Ciros Vision (2015), ICP-OES, Agilent Technologies (2017)
5Iron, particulateFe partµmol/lTischer, JanaICP-MS, Spectro Ciros Vision (2015), ICP-OES, Agilent Technologies (2017)
6Manganese, dissolvedMn dissµmol/lTischer, JanaICP-MS, Spectro Ciros Vision (2015), ICP-OES, Agilent Technologies (2017)
7Manganese, particulateMn partµmol/lTischer, JanaICP-MS, Spectro Ciros Vision (2015), ICP-OES, Agilent Technologies (2017)
8Nitrate[NO3]-µmol/lTischer, JanaChemiluminescence detection of NO, Vanadium(III) method (Braman and Hendrix 1989)
9Nitrite[NO2]-µmol/lTischer, JanaPhotometrical detection, Griess reagent method (Hansen and Koroleff 1999)
10Ammonium[NH4]+µmol/lTischer, JanaPhotometrical detection, Phenol method (Hansen and Koroleff 1999)
11Hydrogen sulfideH2Sµmol/lTischer, JanaHPLC, Fluorescence detection, monobromobimane method (Fahey and Newton 1987)
12Hydrogen sulfideH2Sµmol/lTischer, JanaPhotometer, methylene blue (Cline, 1969)
13Sulfur, elementalS°µmol/lTischer, JanaReversed phase high performance liquid chromatography (RP-HPLC) (Zopfi et al. 2008)
14ThiosulfateS2O3µmol/lTischer, JanaHPLC, Fluorescence detection, monobromobimane method (Fahey and Newton 1987)
15Sulfite[SO3]2-µmol/lTischer, JanaHPLC, Fluorescence detection, monobromobimane method (Fahey and Newton 1987)
16Sulfate[SO4]2-µmol/lTischer, JanaIon chromatography (940 Professional IC Vario, Metrohm)
17MethaneCH4µmol/lSu, GuangyiGas chromatograph (8610C, SRI Instruments, Torrance, USA)
18Nitrate/δ15N ratio[NO3]-/δ15NTischer, JanaGC-IRMS, denitrifier method (Sigman et al. 2001)
19Nitrate/δ18O ratio[NO3]/-δ18OTischer, JanaGC-IRMS, denitrifier method (Sigman et al. 2001)
20Nitrate[NO3]-µmol/lTischer, JanaIon Chromatograph, Thermo Fisher Scientific, Integrion, IC-1100Whole water column; These data were collected within the limnological campaign on Lake Lugano funded by the International Commission for the Protection of Italian-Swiss Waters (CIPAIS)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2059 data points

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