Garrido, Sebastián; Hoogakker, Babette A A; Richirt, Julien; Reyes-Macaya, Dharma; Hernández-Almeida, Iván; Cardich, Jorge; Castillo Bruna, Alexis; Fouet, Marie; Gayo, Eugenia M; Hebbeln, Dierk; Jorissen, Frans J: Benthic foraminiferal pore patterns as paleoxygenation proxy in the Southeast Pacific [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.973120 (dataset in review)
Abstract:
This dataset includes the pore pattern measurements of calcareous benthic foraminifera to calibrate a proxy for reconstructing bottom water dissolved oxygen (BWDO) levels in the Southeast Pacific (SEP), complemented by environmental and biogeochemical data. Surface sediment samples collected between 1962 and 2014 span depths of 24–3,252 meters and latitudes from 12°S to 44°S off the coasts of Chile and Peru. These samples were obtained using various devices, including a multicorer (Sonne 156, Sonne 211, Meteor 92), a gravity core (Sonne 161), a Petersen grab (USNS Eltanin), and a box corer (BIAC072014). Specimens of six benthic foraminifera species (Cibicidoides wuellerstorfi, C. lobatulus, C. ungerianus, Planulina ariminensis, P. ornata, and P. limbata) were collected from the sediment samples. The specimens, dated recent (Holocene to modern), were imaged using Scanning Electron Microscopy (SEM) between March and December 2022. Pore pattern measurements were conducted using ImageJ software between March 2022 and March 2023, including porosity, pore density, and pore size. This study aims to validate benthic foraminifera pore patterns as proxies for reconstructing past BWDO levels. These are crucial for understanding current and future long-term ocean oxygenation trends due to climate change. This dataset provides a region-specific calibration for BWDO proxies, offering detailed insights into geological ocean conditions with an error margin of ±5–20 µmol/kg.
Keyword(s):
Related to:
Garrido, Sebastián; Hoogakker, Babette A A; Richirt, Julien; Reyes-Macaya, Dharma; Hernández-Almeida, Iván; Cardich, Jorge; Bruna, Alexis Castillo; Fouet, Marie; Gayo, Eugenia M; Hebbeln, Dierk; Farias, Laura; Jorissen, Frans J (in review): A species-specific approach to benthic foraminifera pore patterns as a paleoxygenation proxy in the Southeast Pacific. Paleoceanography and Paleoclimatology
Further details:
Garrido, Sebastián (2024): Benthic Foraminifera Pore Patterns in the Southeast Pacific [dataset]. Zenodo, https://doi.org/10.5281/ZENODO.13361937
Funding:
Coverage:
Median Latitude: -25.018802 * Median Longitude: -74.725294 * South-bound Latitude: -44.088160 * West-bound Longitude: -77.491833 * North-bound Latitude: -12.453500 * East-bound Longitude: -70.538830
Date/Time Start: 2001-04-02T16:33:00 * Date/Time End: 2013-01-23T03:04:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
3 datasets
Download Data (login required)
Datasets listed in this bundled publication
- Garrido, S; Hoogakker, BAA; Richirt, J et al. (in review): Bottom water nitrate concentration, bottom water temperature, bottom water pH, and ocean net primary product of surface sediment samples from the Southeast Pacific. https://doi.pangaea.de/10.1594/PANGAEA.973107
- Garrido, S; Hoogakker, BAA; Richirt, J et al. (in review): Benthic foraminifera species abundance of surface sediment samples from the Southeast Pacific. https://doi.pangaea.de/10.1594/PANGAEA.973116
- Garrido, S; Hoogakker, BAA; Richirt, J et al. (in review): Rose Bengal staining status, surface sediment calibrated age, δ18O values, and specimen age of various benthic foraminifera species of surface sediment samples from the Southeast Pacific. https://doi.pangaea.de/10.1594/PANGAEA.973119