de.pangaea.dataset995820 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-09-04T12:21:29Z https://doi.pangaea.de/10.1594/PANGAEA.995820 <gco:CharacterString>Holocene hydrogen isotope composition of precipitation (δ²H) reconstructed from sedimentary leaf wax n-alkanes in Lake Peixão, Serra da Estrela, Portugal</gco:CharacterString> 2026-09-02T08:13:48 publication https://doi.org/10.1594/PANGAEA.995820 Fernández-Pérez, Uxía https://orcid.org/0000-0003-1022-7148 information author Santos, Ricardo N
r.n.santos@unibas.ch
https://orcid.org/0000-0002-8252-3619 information author Rodrigues, Teresa
teresa.rodrigues@ipma.pt
https://orcid.org/0000-0001-7811-7506 information author Schefuß, Enno
eschefuss@marum.de
https://orcid.org/0000-0002-5960-930X information author Bao, Roberto
roberto.bao@udc.es
https://orcid.org/0000-0002-2928-2836 information author Raposeiro, Pedro Miguel
pedro.mv.raposeiro@uac.p
https://orcid.org/0000-0002-7461-0851 information author Sáez, Alberto
a.saez@ub.edu
author Giralt, Santiago
sgiralt@geo3bcn.csic.es
https://orcid.org/0000-0001-8570-7838 information author Martín-Puertas, Celia
celia.martinpuertas@rhul.ac.uk
https://orcid.org/0000-0002-1349-5669 information author Francus, Pierre
pierre.francus@inrs.ca
https://orcid.org/0000-0001-5465-1966 information author Trigo, Ricardo M
rmtrigo@fc.ul.pt
https://orcid.org/0000-0002-4183-9852 information author Ramos, Alexandre M https://orcid.org/0000-0003-3129-7233 information author Hernández, Armand
armand.hernandez@udc.es
https://orcid.org/0000-0001-7245-9863 information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital This dataset provides a Holocene record of the hydrogen isotope composition of precipitation (δ²H precip) reconstructed from hydrogen isotopes measured in sedimentary leaf wax n-alkanes extracted from lacustrine sediment core PEX19-01, retrieved from Lake Peixão (40°20'35 N, 7°36'19 W), a small alpine lake located at 1677 meters above sea level in Serra da Estrela Montain, Portugal. Sediment cores were retrieved in June 2019 using a UWITEC piston coring system (Hernández et al., 2023). We adopt the age-depth model published by Hernández et al. (2023), which indicates continuous sedimentation over the past ~11.100 years. We present compound-specific hydrogen isotope ratios (δ²Hwax) of the terrestrial leaf wax endmember extracted by non-negative matrix factorization (NMF) of sedimentary n-alkane distributions, measured by gas chromatography–isotope ratio mass spectrometry (GC-IRMS). The NMF decomposition isolates the terrestrial vascular plant signal from other sources (e.g., aquatic, degraded organic matter), following Polissar et al. (2025). Precipitation isotope values (δ²H precip) were then derived by applying a catchment-integrated apparent fractionation factor (εapp = −129 ± 12‰; Santos et al., 2022, 2024), which accounts for the isotopic offset between leaf wax and source water. Uncertainty bounds reflect the propagated error on εapp (±12‰). Anomaly values (Δδ²H) represent the deviation of reconstructed δ²H precip from the modern mean annual precipitation isotope value at the site (δ²H MAP = −56‰), estimated using the Online Isotopes in Precipitation Calculator (OIPC). The dataset was generated to reconstruct past changes in hydroclimate and atmospheric circulation over the NW Iberian Peninsula during the Holocene, with the aim of characterizing the evolution of the Atlantic–Mediterranean climate boundary at centennial to millennial timescales. completed Fernández-Pérez, Uxía https://orcid.org/0000-0003-1022-7148 information principalInvestigator Biomarkers d2H Holocene Lake Peixão Lake sediment core leaf waxes lipid biomarkers Mediterranean mountain mountain lakes n-alkanes North Atlantic Paleoclimate plant waxes Portugal precipitation reconstruction Serra da Estrela Western Iberia theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -7.605371 -7.605371 40.343044 40.343044 2019-06-10T00:00:00 2019-06-10T00:00:00 AGE physicalMeasurement Age, calibrated; 1950 CE ka BP ka BP δ Deuterium, wax physicalMeasurement Gas chromatography-isotope ratio mass spectrometry (GC-IRMS), non-negative matrix factorization (NMF); vs. VSMOW, (terrestrial NMF-corrected) ‰ SMOW ‰ SMOW δ Deuterium, precipitation, reconstructed physicalMeasurement see reference(s); Apparent fractionation factor (εapp = −129 ± 12‰), Santos et al. (2022, 2024) ‰ SMOW ‰ SMOW δ Deuterium, precipitation, reconstructed, minimum physicalMeasurement lower bound, ε−12‰ ‰ SMOW ‰ SMOW δ Deuterium, precipitation, reconstructed, maximum physicalMeasurement upper bound, ε+12‰ ‰ SMOW ‰ SMOW Δδ Deuterium, wax physicalMeasurement Deviation from OIPC modern δ²H MAP (−56‰); Δδ²H vs δ²H MAP (anomaly) ‰ SMOW ‰ SMOW text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.995820?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: PEX19-01 * LATITUDE: 40.343044 * LONGITUDE: -7.605371 * DATE/TIME: 2019-06-10T00:00:00 * ELEVATION: 1677.0 m * LAKE WATER DEPTH: 5 m * METHOD/DEVICE: Gravity corer, UWITEC 2019-06-10T00:00:00 References <gco:CharacterString>The timing of the deglaciation in the Atlantic Iberian mountains: Insights from the stratigraphic analysis of a lake sequence in Serra da Estrela (Portugal)</gco:CharacterString> 2023-01-01 publication https://doi.org/10.1002/esp.5536 Hernández, Armand
armand.hernandez@udc.es
https://orcid.org/0000-0001-7245-9863 information author Sáez, Alberto
a.saez@ub.edu
author Santos, Ricardo N
r.n.santos@unibas.ch
https://orcid.org/0000-0002-8252-3619 information author Rodrigues, Teresa
teresa.rodrigues@ipma.pt
https://orcid.org/0000-0001-7811-7506 information author Martín-Puertas, Celia
celia.martinpuertas@rhul.ac.uk
https://orcid.org/0000-0002-1349-5669 information author Gil-Romera, Graciela https://orcid.org/0000-0001-5726-2536 information author Abbott, Mark
mark@oce.orst.edu
author Carballeira, Rafael author Costa, Pedro J M https://orcid.org/0000-0001-6573-0539 information author Giralt, Santiago
sgiralt@geo3bcn.csic.es
https://orcid.org/0000-0001-8570-7838 information author Gomes, Sandra D https://orcid.org/0000-0001-7807-3144 information author Griffore, Melissa author Ibañez-Insa, Jordi author Leira, M https://orcid.org/0000-0001-9024-9448 information author Moreno, João
jcmoreno@fc.ul.pt
https://orcid.org/0000-0003-4611-8648 information author Naughton, Filipa
filipa.naughton@ipma.pt
https://orcid.org/0000-0002-3055-9396 information author Oliveira, Dulce
dulce_oliveiraa@hotmail.com
https://orcid.org/0000-0002-3016-532X information author Raposeiro, Pedro Miguel
pedro.mv.raposeiro@uac.p
https://orcid.org/0000-0002-7461-0851 information author Trigo, Ricardo M
rmtrigo@fc.ul.pt
https://orcid.org/0000-0002-4183-9852 information author Vieira, Gonçalo
vieira@campus.ul.pt
https://orcid.org/0000-0001-7611-3464 information author Ramos, Alexandre M https://orcid.org/0000-0003-3129-7233 information author documentDigital Earth Surface Processes and Landforms esp.5536 References <gco:CharacterString>Mixed messages: Unmixing sedimentary molecular distributions reveals source contributions and isotopic values</gco:CharacterString> 2025-01-01 publication https://doi.org/10.1016/j.gca.2025.03.001 Polissar, Pratigya J https://orcid.org/0000-0001-5483-1625 information author Karp, A Tyler https://orcid.org/0000-0001-9764-749X information author D'Andrea, William J
dandrea@ldeo.columbia.edu
https://orcid.org/0000-0003-0182-8857 information author documentDigital Geochimica et Cosmochimica Acta 396 122-134 References <gco:CharacterString>Understanding the Atlantic influence on climate and vegetation dynamics in western Iberia over the last 2000 years</gco:CharacterString> 2024-01-01 publication https://doi.org/10.1016/j.quascirev.2024.108796 Santos, Ricardo N
r.n.santos@unibas.ch
https://orcid.org/0000-0002-8252-3619 information author Rodrigues, Teresa
teresa.rodrigues@ipma.pt
https://orcid.org/0000-0001-7811-7506 information author Naughton, Filipa
filipa.naughton@ipma.pt
https://orcid.org/0000-0002-3055-9396 information author Schefuß, Enno
eschefuss@marum.de
https://orcid.org/0000-0002-5960-930X information author Oliveira, Dulce
dulce_oliveiraa@hotmail.com
https://orcid.org/0000-0002-3016-532X information author Moreno, João
jcmoreno@fc.ul.pt
https://orcid.org/0000-0003-4611-8648 information author Raposeiro, Pedro Miguel
pedro.mv.raposeiro@uac.p
https://orcid.org/0000-0002-7461-0851 information author Gil-Romera, Graciela https://orcid.org/0000-0001-5726-2536 information author Morgan, Alistair author Leira, M https://orcid.org/0000-0001-9024-9448 information author Gomes, Sandra D https://orcid.org/0000-0001-7807-3144 information author Ladd, S N https://orcid.org/0000-0002-0132-5785 information author Trigo, Ricardo M
rmtrigo@fc.ul.pt
https://orcid.org/0000-0002-4183-9852 information author Ramos, Alexandre M https://orcid.org/0000-0003-3129-7233 information author Hernández, Armand
armand.hernandez@udc.es
https://orcid.org/0000-0001-7245-9863 information author documentDigital Quaternary Science Reviews 337 108796 References <gco:CharacterString>Leaf wax biomarkers of a high-mountain lake area in western iberia—Implications for environmental reconstructions</gco:CharacterString> 2022-01-01 publication https://doi.org/10.3389/fenvs.2022.994377 Santos, Ricardo N
r.n.santos@unibas.ch
https://orcid.org/0000-0002-8252-3619 information author Schefuß, Enno
eschefuss@marum.de
https://orcid.org/0000-0002-5960-930X information author Cordeiro, Lívia Gebara M S author Oliveira, Dulce
dulce_oliveiraa@hotmail.com
https://orcid.org/0000-0002-3016-532X information author Hernández, Armand
armand.hernandez@udc.es
https://orcid.org/0000-0001-7245-9863 information author Ramos, Alexandre M https://orcid.org/0000-0003-3129-7233 information author Rodrigues, Teresa
teresa.rodrigues@ipma.pt
https://orcid.org/0000-0001-7811-7506 information author documentDigital Frontiers in Environmental Science 10 994377