PANGAEA_990132 Downcore sediment biogeochemical and physical data from Lake Alchichica (Puebla, Mexico) Rantala, Marttiina V; Israde-Alcántara, Isabel; Safaierad, Reza; Mattielli, Nadine; Tylmann, Wojciech; Smol, John P; Grooms, Christopher; Lepoint, Gilles; Francus, Pierre; Metcalfe, Sarah; Etmański, Paweł; Fagel, Nathalie Downcore sediment biogeochemical and physical data from Lake Alchichica (Puebla, Mexico) 2026-06-05 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.990132 Investigator Marttiina V Rantala marttiina.rantala@gmail.com Earth Science DEPTH, sediment/rock Depth, sediment/rock, top/minimum Depth, sediment/rock, bottom/maximum Age AGE Organic matter Carbonates Density, dry bulk Sedimentation rate per year Accumulation rate, mass, per year Accumulation rate, mass, carbon, organic, total Carbon, organic, total Nitrogen, total δ13C δ15N Carbon/Nitrogen ratio Chlorophyll a, per dry mass Chlorophyll a, z-score geoscientificInformation Anthropocene biogeochemistry Carbon accumulation crater lake LAc22-1 Lake sediment Mexico Primary production Sediment corer, UWITEC Tropical Bayesian age model, according to Aquino-López et al. (2018) Determined by loss on ignition at 550 °C, according to Heiri et al. (2010) Determined by loss on ignition at 950 °C, according to Heiri et al. (2010) Calculated, see Comment Elemental analyzer (EA), Elementar, vario MICRO cube Isotope ratio mass spectrometer (IRMS), Elementar, isoprime precisION Visible-near infrared spectroscopy, Foss NIRsystems, Model 6500 Rapid Content Analyzer 2022-04-12 2022-04-12 Complete 19.410556 19.410556 -97.403889 -97.403889 0.0025 m (DEPTH, sediment/rock) 0.1425 m (DEPTH, sediment/rock) unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 423 data points text/tab-separated-values Rantala, Marttiina V; Israde-Alcántara, Isabel; Safaierad, Reza; Mattielli, Nadine; Tylmann, Wojciech; Smol, John P; Grooms, Christopher; Lepoint, Gilles; Francus, Pierre; Metcalfe, Sarah; Etmański, Paweł; Fagel, Nathalie (2026): Increasing lake primary production and organic carbon sequestration in tropical Mexican lakes during the past century. CATENA, 273, 110448, https://doi.org/10.1016/j.catena.2026.110448 Aquino-Lopez, Marco A; Blaauw, Maarten; Christen, Andrés; Sanderson, Nicole K (2018): Bayesian Analysis of 210Pb Dating. Journal of Agricultural Biological and Environmental Statistics, 23(3), 317-333, https://doi.org/10.1007/s13253-018-0328-7 Heiri, Oliver; Lotter, André F; Lemcke, G (2001): Loss on ignition as a method for estimating organic and carbonate content in sediments: reproducibility and comparability of results. Journal of Paleolimnology, 25(1), 101-110, https://doi.org/10.1023/A:1008119611481 Zhang, Fule; Wang, Jinlong; Baskaran, Mark; Zhong, Qiangqiang; Wang, Yali; Paatero, Jussi; Du, Jinzhou (2021): A global dataset of atmospheric 7Be and 210Pb measurements: annual air concentration and depositional flux. Earth System Science Data, 13(6), 2963-2994, https://doi.org/10.5194/essd-13-2963-2021

Multiproxy biogeochemical and physical data of sediment core LAc22-1 retrieved from Lake Alchichica in April 2022. Measurements (elemental and isotope biogeochemistry, visible range spectroscopy, loss on ignition) were performed on discrete sediment samples and extend back to the late 1800s. Ages were estimated using Pb-210 dating and Bayesian age-depth modeling. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.990132"!

http://en.wikipedia.org/wiki/Kyr AGE https://doi.org/10.1007/s13253-018-0328-7 Bayesian age model, according to Aquino-López et al. (2018) https://doi.org/10.1007/s13253-018-0328-7 Bayesian Analysis of 210Pb Dating https://doi.org/10.1016/j.catena.2026.110448 Increasing lake primary production and organic carbon sequestration in tropical Mexican lakes during the past century https://doi.org/10.1023/A:1008119611481 Determined by loss on ignition at 550 °C, according to Heiri et al. (2010) https://doi.org/10.1023/A:1008119611481 Determined by loss on ignition at 950 °C, according to Heiri et al. (2010) https://doi.org/10.1023/A:1008119611481 Loss on ignition as a method for estimating organic and carbonate content in sediments: reproducibility and comparability of results https://doi.org/10.5194/essd-13-2963-2021 A global dataset of atmospheric 7Be and 210Pb measurements: annual air concentration and depositional flux DIF 9.4 2026-06-05 2026-09-04