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): Downcore sediment biogeochemical and physical data from Lake Alchichica (Puebla, Mexico) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.990132
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Published: 2026-06-05 • DOI registered: 2026-07-04
Abstract:
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.
Keyword(s):
Supplement to:
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
References:
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
Funding:
Fonds de la Recherche Scientifique (FNRS), grant/award no. PDR T.0079.21: Holocene Mexican Crater Lakes and Climate (HolMeCl)
Coverage:
Latitude: 19.410556 * Longitude: -97.403889
Date/Time Start: 2022-04-12T00:00:00 * Date/Time End: 2022-04-12T00:00:00
Minimum DEPTH, sediment/rock: 0.0025 m * Maximum DEPTH, sediment/rock: 0.1425 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Rantala, Marttiina V | Geocode – Middle depth of sediment section. | |
| 2 | Depth, sediment/rock, top/minimum | Depth sed top | m | Rantala, Marttiina V | Top depth of sediment section. | |
| 3 | Depth, sediment/rock, bottom/maximum | Depth sed bot | m | Rantala, Marttiina V | Bottom depth of sediment section. | |
| 4 | Age | Age | a AD/CE | Rantala, Marttiina V | Bayesian age model, according to Aquino-López et al. (2018) | Mean age for middle depth of sediment section, Plum version 0.5.1 by Aquino-López et al. (2018 , doi:10.1007/s13253-018-0328-7). |
| 5 | AGE | Age | ka BP | Rantala, Marttiina V | Geocode | |
| 6 | Organic matter | OM | % | Rantala, Marttiina V | Determined by loss on ignition at 550 °C, according to Heiri et al. (2010) | |
| 7 | Carbonates | Carb | % | Rantala, Marttiina V | Determined by loss on ignition at 950 °C, according to Heiri et al. (2010) | |
| 8 | Density, dry bulk | DBD | g/cm3 | Rantala, Marttiina V | Calculated, see Comment | Mass of dry sediment divided by wet sediment volume (1 cm³). |
| 9 | Sedimentation rate per year | SR | cm/a | Rantala, Marttiina V | Calculated, see Comment | Sediment section thickness divided by elapsed time. |
| 10 | Accumulation rate, mass, per year | MAR | g/cm2/a | Rantala, Marttiina V | Calculated, see Comment | Dry bulk density multiplied by sediment accumulation rate. |
| 11 | Accumulation rate, mass, carbon, organic, total | MAR TOC | g/m2/a | Rantala, Marttiina V | Calculated, see Comment | Sediment organic carbon content multiplied by mass accumulation rate. |
| 12 | Accumulation rate, mass, carbon, organic, total | MAR TOC | g/m2/a | Rantala, Marttiina V | Calculated, see Comment | Sediment organic carbon content multiplied by mass accumulation rate. Values corrected for sediment focusing based on measured unsupported 210Pb flux in the sediment core and atmospheric 210Pb flux estimated based on mean annual precipitation and Zhang et al. (2021, doi:10.5194/essd-13-2963-2021) equations for latitudinal bands 10-20°N and 20-30°N. |
| 13 | Carbon, organic, total | TOC | % | Rantala, Marttiina V | Elemental analyzer (EA), Elementar, vario MICRO cube | |
| 14 | Nitrogen, total | TN | % | Rantala, Marttiina V | Elemental analyzer (EA), Elementar, vario MICRO cube | |
| 15 | δ13C | δ13C | ‰ | Rantala, Marttiina V | Isotope ratio mass spectrometer (IRMS), Elementar, isoprime precisION | Values from acidified samples. |
| 16 | δ15N | δ15N | ‰ | Rantala, Marttiina V | Isotope ratio mass spectrometer (IRMS), Elementar, isoprime precisION | Values from nonacidified samples. |
| 17 | Carbon/Nitrogen ratio | C/N | mol/mol | Rantala, Marttiina V | Elemental analyzer (EA), Elementar, vario MICRO cube | Calculated based on values from acidified samples for both elements, mass ratio multiplied by 1.167. |
| 18 | Chlorophyll a, per dry mass | Chl a/dm | mg/g | Rantala, Marttiina V | Visible-near infrared spectroscopy, Foss NIRsystems, Model 6500 Rapid Content Analyzer | |
| 19 | Chlorophyll a, z-score | Chl a z | Rantala, Marttiina V | Visible-near infrared spectroscopy, Foss NIRsystems, Model 6500 Rapid Content Analyzer | Initial values z-score transformed. |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
423 data points