Slotta, Franziska; Wacker, Lukas; Riedel, Frank; Heussner, Karl-Uwe; Hartmann, Kai; Helle, Gerhard (2019): Subseasonal δ13C and δ18O of tree-ring cellulose of an African baobab (Adansonia digitata) tree from Oman [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.905625, In: Slotta, F et al. (2019): Normalized 14C activity ratios (F14C), tree-ring width indices (RWI) and subseasonal δ13C and δ18O of tree-ring cellulose of an African baobab (Adansonia digitata) tree from Oman [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.905626
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Abstract:
Carbon and oxygen stable isotope data of tree-ring cellulose covers the period from 1941 to 2005CE. Tangential wood slices of approximately 1 mm were cut parallel to the fiber orientation, in radial direction from the cambial zone towards the pith resulting in resolutions from 1 up to 11 samples per year. Visible rays and other identified parenchymatous structures were removed from the wood slices to minimize possible contamination. Cellulose was extracted from wood samples after Wieloch et al. (2011). After extraction cellulose samples were homogenized by ultrasonic treatment (Laumer et al., 2009), and freeze-dried for at least 48 h. 130 180 μg of cellulose were packed in silver capsules and stored over night at 100 °C in a vacuum drying oven (ThermoFisher Heraeus VT 6060) prior to isotope ratio mass spectrometry. δ13C and δ18O were measured simultaneously by reduction of cellulose samples to carbon monoxide in a high temperature TC/EA converter (1400 °C) coupled online to an IRMS Delta V Plus (Thermo Fisher Scientific, Bremen, Germany). Values are referred to VPDB and VSMOW, respectively with a reproducibility of ≤ 0.15 for δ13C and ≤ 0.25 for δ18O.
Related to:
Slotta, Franziska; Wacker, Lukas; Riedel, Frank; Heussner, Karl-Uwe; Hartmann, Kai; Helle, Gerhard (2021): High-resolution <sup>14</sup>C bomb peak dating and climate response analyses of subseasonal stable isotope signals in wood of the African baobab – a case study from Oman. Biogeosciences, 18(12), 3539-3564, https://doi.org/10.5194/bg-18-3539-2021
Further details:
Laumer, W; Andreu, L; Helle, Gerhard; Schleser, Gerhard Hans; Wieloch, Thomas; Wissel, Holger (2009): A novel approach for the homogenization of cellulose to use micro-amounts for stable isotope analyses. Rapid Communications in Mass Spectrometry, 23(13), 1934-1940, https://doi.org/10.1002/Rcm.4105
Wieloch, Thomas; Helle, Gerhard; Heinrich, Ingo; Voigt, Michael; Schyma, Philipp (2011): A novel device for batch-wise isolation of α-cellulose from small-amount wholewood samples. Dendrochronologia, 29(2), 115-117, https://doi.org/10.1016/j.dendro.2010.08.008
Coverage:
Latitude: 17.050000 * Longitude: 54.600000
Date/Time Start: 2015-04-01T00:00:00 * Date/Time End: 2015-04-01T00:00:00
Minimum Elevation: 318.0 m * Maximum Elevation: 318.0 m
Event(s):
Comment:
Funding agency:
Deutsche Forschungsgemeinschaft, Grant Agreement No. HE3089/10-1 and RI 809/32-1
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | AGE | Age | ka BP | Helle, Gerhard | Geocode | |
| 2 | Age | Age | a AD/CE | Helle, Gerhard | Year CE | |
| 3 | δ13C, tree rings | δ13C TR | ‰ PDB | Helle, Gerhard | vs VPDB | |
| 4 | δ18O, tree rings | δ18O TR | ‰ SMOW | Helle, Gerhard | vs VSMOW |
License:
Creative Commons Attribution-ShareAlike 4.0 International (CC-BY-SA-4.0)
Size:
1023 data points