10.1594/PANGAEA.977623Tischer, JanaJanaTischer0000-0001-8375-5705University of BaselZopfi, JakobJakobZopfi0000-0002-8437-7344University of BaselLepori, FabioFabioLepori0000-0002-6438-9452University of Applied Sciences and Arts of Southern SwitzerlandSu, GuangyiGuangyiSuUniversity of BaselGiglio, ElenaElenaGiglioUniversity of BaselFrey, ClaudiaClaudiaFrey0000-0002-3544-3800University of BaselLehmann, Moritz FMoritz FLehmann0000-0003-0626-5942University of BaselPANGAEA202515N-traceranammoxanoxic hypolimnionDenitrificationdissimilatory nitrate reduction to ammoniumLakemeromixisnitrateNitrate isotopesnitrate reductionnitrificationNitrogennitrogen cyclenitrogen isotopesoxyclineSulfursulfur cyclewater columnDATE/TIMEDEPTH, waterIron, dissolvedIron, particulateManganese, dissolvedManganese, particulateNitrateNitriteAmmoniumHydrogen sulfideSulfur, elementalThiosulfateSulfiteSulfateMethaneNitrate/δ15N ratioNitrate/δ18O ratioMultiple investigationsICP-MS, Spectro Ciros Vision (2015), ICP-OES, Agilent Technologies (2017)Chemiluminescence detection of NO, Vanadium(III) method (Braman and Hendrix 1989)Photometrical detection, Griess reagent method (Hansen and Koroleff 1999)Photometrical detection, Phenol method (Hansen and Koroleff 1999)HPLC, Fluorescence detection, monobromobimane method (Fahey and Newton 1987)Photometer, methylene blue (Cline, 1969)Reversed phase high performance liquid chromatography (RP-HPLC) (Zopfi et al. 2008)Ion chromatography (940 Professional IC Vario, Metrohm)Gas chromatograph (8610C, SRI Instruments, Torrance, USA)GC-IRMS, denitrifier method (Sigman et al. 2001)Ion Chromatograph, Thermo Fisher Scientific, Integrion, IC-11002015-02-17T10:30:00/2018-04-25T15:00:00Dataset10.1101/2025.01.03.62728910.1101/2025.03.29.6455822059 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalWe 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.9.02080646.010472SwitzerlandSwiss National Science Foundationhttps://doi.org/10.13039/501100001711153055Seasonal Dynamics of fixed N elimination and its coupling with Sulfur and Carbon Cycling in the Redox Transition Zones of Lake Lugano