Lipid biomarker glycerol dialkyl glycerol tetraether (GDGT) distributions from soils, peats and lake sediments on Sumatra

Petter Hällberg, Guillermo Jarne Bueno, Yolanda Schankat, Julia Steinbach, Hamdi Rifai, Caroline Bouvet de la Maisonneuve, Rienk H. Smittenberg

This dataset contains glycerol dialkyl glycerol tetraether (GDGT) distributions from a soil transect, two peat cores and a short lake core on West Sumatra. We report the peak areas for isoprenoid-GDGTs, branched-GDGTs and H-GDGTs, allowing GDGT indexes to be calculated by the user.

GDGT data can be used as paleothermometry and paleoenvironmental proxies, and we use the data to reconstruct the Holocene temperature evolution and local environmental conditions on Sumatra over the Holocene.

The data was generated by high performance liquid chromatography and mass spectrometry (HPLC-MS) measurements of polar lipid extracts. The soils are from an altitudinal transect 0⁠ – ⁠2840 m elevation range, while lake and peat core sediments are of ages up to 11000 years, i.e., almost the entire Holocene.

Citation

Petter Hällberg, Guillermo Jarne Bueno, Yolanda Schankat, Julia Steinbach, Hamdi Rifai, Caroline Bouvet de la Maisonneuve, Rienk H. Smittenberg (2022) Lipid biomarker glycerol dialkyl glycerol tetraether (GDGT) distributions from soils, peats and lake sediments on Sumatra. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/hallberg-2022-sumatra-1

Data description

Reported data are the peak areas of a range of GDGT compounds. Blanks indicate that the compound was absent in the sample, or under the limit of quantification. File type: .csv. File size: 103 kB.

Column description:

• Type (peat, lake, or soil)
• Site
• Sample name
• Age (years BP)
• Depth (cm; where 0 for soils indicate that the samples were collected from the upper centimeter, i.e. less than 1 cm depth)
• Elevation (m)
• 5-methyl brGDGTs: Ia, Ib, Ic, IIa, IIb, IIc, IIIa, IIIb, IIIc
• 6-methyl brGDGTs: IIa', IIb', IIIa', IIIb'
• 7-methyl brGDGT: IIIa7
• Isoprenoid GDGTs: GDGT-0, GDGT-1, GDGT-2, GDGT-3, GDGT-4, cren, cren isomer
• H-brGDGTs: H1020ab (combined H1020a and H1020b), H1020c, H1034a, H1034b, H1034c, H1048
• H-isoGDGTs: H-GDGT-0, H-GDGT-1, H-GDGT-2

For naming convections and molecular structures for brGDGTs and H-isoGDGTs, see Naafs et al. 2018 and for H-brGDGTs see Baxter et al. 2019.

Comments

Petter Hällberg generated the Diatas and Singgalang data and curated all other data. Guillermo Jarne Bueno generated the Padang data and Yolanda Schankat generated the lake Maninjao data. Julia Steinbach assisted with the analyses. Hamdi Rifai and Caroline Bouvet de la Maisonneuve were responsible for the collection of the Diatas, Padang and Maninjao samples and aided in obtaining the Singgalang samples. [javascript protected email address] provided funding and led the project and he is also an alternative contact person.