Utsumi Giovanna S A giovanna.utsumi@gmail.com 0009-0002-4581-246X University of Georgia https://ror.org/00te3t702 Medeiros Patricia M medeiros@uga.edu 0000-0001-6818-2603 University of Georgia https://ror.org/00te3t702 2026 Molecular composition of dissolved organic matter in Mono Lake (USA) derived from FT-ICR MS analysis dataset https://doi.org/10.1594/PANGAEA.983110 2026-03-12T06:03:06 We investigated the composition of dissolved organic matter (DOM) in the hypersaline Mono Lake in California (USA), providing a detailed molecular characterization of DOM in this extreme ecosystem during a shift in limnological conditions (2017–2018). This dataset contains DOM molecular data (mass-to-charge ratios and peak intensities) obtained using ultrahigh-resolution mass spectrometry (21T Fourier transform ion cyclotron resonance mass spectrometry, FT-ICR MS; Bruker). Water samples were collected seasonally at depths ranging from 0.5 m to 35 m, using a CTD rosette as described in Phillips et al. (2021). Additionally, the dataset includes DOM molecular data from two main creeks - Lee Vining Creek and Rush Creek - as well as from a dominant phytoplankton species, Picocystis sp. Utsumi Giovanna S A giovanna.utsumi@gmail.com 0009-0002-4581-246X Hollibaugh James T McKenna Amy M Castelao Renato M Medeiros Patricia M medeiros@uga.edu 0000-0001-6818-2603 2026 Temporal variability of dissolved organic matter composition in the hypersaline Mono Lake, California journal article Aquatic Sciences 88(2) https://doi.org/10.1007/s00027-026-01283-6 52 Phillips Alexandra A 0000-0001-5959-5238 Speth Daan 0000-0002-2361-5935 Miller Laurence G 0000-0002-7807-3475 Wang Xingchen wxc514033464@163.com 0000-0001-5316-789X Wu F Medeiros Patricia M medeiros@uga.edu 0000-0001-6818-2603 Monteverde Danielle R 0000-0002-0198-8220 Osburn Magdalena R 0000-0001-9180-559X Berelson William M berelson@usc.edu 0000-0002-1526-3802 Betts Hannah L Wijker Reto S 0000-0001-5104-9849 Mullin Sean W 0000-0002-6225-3279 Johnson Hope A 0000-0001-6721-3340 Orphan Victoria J 0000-0002-5374-6178 Fischer Woodward W Geobiology Course 2017 Geobiology Course 2018 Sessions Alex L 0000-0001-6120-2763 2021 Microbial succession and dynamics in meromictic Mono Lake, California journal article Geobiology 19(4) https://doi.org/10.1111/gbi.12437 376-393 -119.03149999781154 -119.03149999781154 37.95729999989599 37.95729999989599 -119.03149999781154 37.95729999989599 2017-05-23T00:00:00 2018-10-09T00:00:00 0.5 35.0 vertical profile National Science Foundation NSF https://doi.org/10.13039/100000001 DMR-1644779 National High Magnetic Field Laboratory Renewal 2018-2022 https://www.nsf.gov/awardsearch/show-award/?AWD_ID=1644779 University of Georgia Research Foundation https://doi.org/10.13039/100012483 19250PM1 UGARF IDC Mono_Lake 37.95733333 -119.0315 Mono Lake, California, United States of America CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers 3206154 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Sample code/label Sample label Medeiros Patricia M medeiros@uga.edu 0000-0001-6818-2603 Sample label DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Medeiros Patricia M medeiros@uga.edu 0000-0001-6818-2603 Date/Time LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 Medeiros Patricia M medeiros@uga.edu 0000-0001-6818-2603 Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 Medeiros Patricia M medeiros@uga.edu 0000-0001-6818-2603 Longitude DEPTH, water Depth water m depth http://purl.obolibrary.org/obo/PATO_0001595 water http://purl.obolibrary.org/obo/CHEBI_15377 Length L http://dbpedia.org/resource/Length Medeiros Patricia M medeiros@uga.edu 0000-0001-6818-2603 Depth water [m] Mass-to-charge ratio m/z http://goldbook.iupac.org/M03752.html ratio Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), Bruker; coupled with 21 Tesla (T) magnet Medeiros Patricia M medeiros@uga.edu 0000-0001-6818-2603 m/z Peak intensity Peak int Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), Bruker; coupled with 21 Tesla (T) magnet Medeiros Patricia M medeiros@uga.edu 0000-0001-6818-2603 Peak int CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable California Dissolved Organic Matter Endorheic saline lakes FT-ICR MS Mono Lake author101118 author103188 author103608 author107469 author111214 author111215 author111216 author111217 author111218 author111219 author111220 author111221 author111222 author111223 author111224 author20248 author27469 author36445 author47599 author65260 author65678 author65812 award1479 award4093 curlevel30 event3264157 funder20211 funder22229 geocode1599 geocode1600 geocode1601 geocode1619 inst21272 journal1382 journal6000 license21 method10923 method17954 param102741 param121230 param790 pi103188 ref133836 ref133837 term1073131 term2299371 term2606205 term2663825 term43863 term43975 term48500 term48527 term51201 term54154 term67626 term68026 term76225 term76229 topotype3