Citation:

PANGAEA.935599

Name: Compound-specific oxygen and hydrogen isotopes in soils from South Africa and results of the coupled δ2H–δ18O paleohygrometer approach
Published: 2021-09-08
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Apparent fractionation; Biomarker; Compound-specific hydrogen isotopes; Compound-specific oxygen isotopes; Hemicellulose sugars; leaf waxes; South Africa

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Published: 2021-09-08 • DOI registered: 2021-10-16

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Abstract:

Here we present the data of the study by Strobel et al. (2020; doi:10.1016/j.scitotenv.2020.137045), who analysed topsoil samples from South Africa for their compound-specific hydrogen isotopic composition of leaf wax-derived n-alkanes (δ2Hn-alkane) and oxygen isotopic composition of hemicellulose-derived sugars (δ18Osugar). Apparent fractionation, which is the difference between δ2Hn-alkane and the isotopic signature of growing season precipitation δ2Hp (εapp 2H) and δ18Osugar and δ18Op (εapp 18O), was calculated. Coupling both δ2Hn-alkane and δ18O sugar using a 'paleohygrometer' approach enables the calculation of the plants-source water and relative humidity. For more details see Strobel et al. (2020; doi:10.1016/j.scitotenv.2020.137045).

Keyword(s):

Apparent fractionation; Biomarker; Compound-specific hydrogen isotopes; Compound-specific oxygen isotopes; Hemicellulose sugars; leaf waxes; South Africa

Related to:

Strobel, Paul; Haberzettl, Torsten; Bliedtner, Marcel; Struck, Julian; Glaser, Bruno; Zech, Michael; Zech, Roland (2020): The potential of δ2H-alkanes and δ18Osugar for paleoclimate reconstruction – A regional calibration study for South Africa. Science of the Total Environment, 716, 137045, https://doi.org/10.1016/j.scitotenv.2020.137045

Funding:

German Research Foundation (DFG), grant/award no. 434918595 : Late Quaternary climate and environmental reconstruction based on lake and peat sediments from South Africa

Coverage:

Median Latitude: -33.831709 * Median Longitude: 21.553887 * South-bound Latitude: -34.808660 * West-bound Longitude: 18.417670 * North-bound Latitude: -32.278390 * East-bound Longitude: 24.263990

Minimum DEPTH, soil: 0 m * Maximum DEPTH, soil: 0 m

Event(s):

ZAT_1 * Latitude: -34.051110 * Longitude: 19.295290 * Elevation: 400.0 m * Location: South Africa * Method/Device: Soil sample (SOILS)

ZAT_2 * Latitude: -34.444030 * Longitude: 19.873500 * Elevation: 112.0 m * Location: South Africa * Method/Device: Soil sample (SOILS)

ZAT_3 * Latitude: -34.808660 * Longitude: 20.031160 * Elevation: 70.0 m * Location: South Africa * Method/Device: Soil sample (SOILS)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Latitude of event	Latitude		Strobel, Paul
2	Longitude of event	Longitude		Strobel, Paul
3	Elevation of event	Elevation	m	Strobel, Paul
4	Event label	Event		Strobel, Paul
5	Area/locality	Area		Strobel, Paul
6	DEPTH, soil	Depth soil	m	Strobel, Paul		Geocode
7	Average chain length, odd	odd-ACL		Strobel, Paul
8	Carbon Preference Index	CPI		Strobel, Paul
9	δ Deuterium, n-alkanes	δD n-alkanes	‰ SMOW	Strobel, Paul		vs. VSMOW
10	δ Deuterium, n-alkanes, standard deviation	δD n-alkanes std dev	±	Strobel, Paul
11	Apparent hydrogen isotope fractionation	εapp D	‰	Strobel, Paul
12	Apparent hydrogen isotope fractionation, standard deviation	εapp D std dev	±	Strobel, Paul
13	Arabinose, δ18O	Ara δ180	‰ SMOW	Strobel, Paul		vs. VSMOW
14	Arabinose, δ18O, standard deviation	Ara δ18O std dev	±	Strobel, Paul
15	Sugar, δ18O	Sugar δ180	‰ SMOW	Strobel, Paul		vs. VSMOW
16	Sugar, δ18O, standard deviation	Sugar δ18O std dev	±	Strobel, Paul
17	δ Deuterium, source water	δD source water	‰ SMOW	Strobel, Paul	Reconstructed	vs. VSMOW
18	δ18O, source water	δ18O source water	‰ SMOW	Strobel, Paul	Reconstructed	vs. VSMOW
19	Humidity, relative	RH	%	Strobel, Paul	Reconstructed

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

791 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Latitude	2 Longitude	3 Elevation [m]	4 Event	5 Area	7 odd-ACL	8 CPI	9 δD n-alkanes [‰ SMOW]	10 δD n-alkanes std dev [±]	11 εapp D [‰]	12 εapp D std dev [±]	13 Ara δ180 [‰ SMOW]	14 Ara δ18O std dev [±]	15 Sugar δ180 [‰ SMOW]	16 Sugar δ18O std dev [±]	17 δD source water [‰ SMOW]	18 δ18O source water [‰ SMOW]	19 RH [%]
-34.05111	19.29529	400	ZAT_1	WRZ	30.7	7.8	-151.6	0.8	-136.1	0.8	35.0	0.5	39.3	0.5	-27.49	-5.59	57.2
-34.44403	19.87350	112	ZAT_2	WRZ	30.3	7.8	-138.1	2.4	-125.9	2.4
-34.80866	20.03116	70	ZAT_3	WRZ	28.1	17.5	-151.7	1.3	-140.5	1.3
-34.58784	19.99783	30	ZAT_4	WRZ	30.5	8.5	-148.3	1.7	-138.0	1.7
-34.45162	20.17171	67	ZAT_5	WRZ	30.5	13.9	-156.0	1.2	-144.9	1.2	31.9	1.0	35.4	1.0	-20.96	-4.59	70.8
-34.40574	20.41035	187	ZAT_6	S-YRZ	30.3	8.8	-153.6	0.7	-140.7	0.7
-34.29465	20.59364	60	ZAT_7	S-YRZ	30.3	14.9	-183.3	0.6	-172.5	0.6	31.9	0.6	35.3	0.6	-69.94	-10.65	59.1
-34.09956	21.20386	228	ZAT_8	S-YRZ	31.3	11.6	-169.8	0.6	-157.1	0.6
-34.15286	21.29576	158	ZAT_9	S-YRZ	30.4	16.2	-160.1	0.6	-148.2	0.6	32.9	0.1	36.7	0.1	-31.78	-5.70	69.2
-34.27472	21.83828	0	ZAT_10	S-YRZ	30.9	11.1	-140.1	1.6	-129.6	1.6	30.3	0.2	33.6	0.2	16.57	0.58	92.7
-34.27227	21.83204	7	ZAT_14	S-YRZ	30.6	9.3	-163.1	0.7	-153.0	0.7	33.5	1.5	36.8	1.5	-39.62	-6.72	65.0
-34.25406	21.82178	11	ZAT_17	S-YRZ	30.1	3.9	-143.4	1.4	-133.0	1.4	30.8	0.8	34.1	0.8	8.02	-0.53	88.3
-34.24559	21.85248	67	ZAT_22	S-YRZ	30.7	7.6	-144.6	0.9	-133.3	0.9	31.5	1.5	35.0	1.5	3.08	-1.17	84.9
-34.24780	21.83148	110	ZAT_24	S-YRZ	30.5	8.2	-143.5	0.9	-131.3	0.9	34.5	0.1	38.0	0.1	-7.29	-2.52	73.4
-34.24229	21.87119	69	ZAT_27	S-YRZ	30.8	11.7	-147.9	1.2	-136.7	1.2	35.6	0.3	39.1	0.3	-20.15	-4.19	66.0
-34.21402	21.85035	120	ZAT_28	S-YRZ	30.9	10.0	-150.4	0.5	-138.4	0.5	35.6	0.5	39.3	0.5	-25.20	-4.84	64.2
-34.19790	21.85332	147	ZAT_29	S-YRZ	31.0	10.6	-153.1	0.4	-141.1	0.4	36.2	1.0	39.8	1.0	-32.52	-5.79	60.2
-34.23968	21.79967	98	ZAT_30	S-YRZ	30.7	10.8	-136.9	0.4	-125.5	0.4	36.1	1.1	39.6	1.1	-1.82	-1.81	70.9
-34.22577	21.78030	173	ZAT_31	S-YRZ	30.9	13.6	-130.5	0.2	-117.2	0.2	33.1	0.8	36.8	0.8	22.48	1.35	87.1
-34.20845	21.79318	183	ZAT_32	S-YRZ	30.6	11.8	-152.0	0.5	-139.1	0.5	34.4	0.6	38.1	0.6	-22.83	-4.54	68.4
-34.19942	21.88450	99	ZAT_34	S-YRZ	30.8	13.8	-143.8	0.4	-132.6	0.4	35.8	0.5	39.3	0.5	-13.69	-3.35	67.6
-34.16040	21.91483	177	ZAT_38	S-YRZ	30.8	7.9	-160.3	1.5	-147.5	1.5	34.8	0.3	38.5	0.3	-40.00	-6.77	61.5
-34.12957	21.93340	211	ZAT_39	S-YRZ	31.0	9.4	-162.9	0.7	-150.2	0.7	38.8	1.1	42.7	1.1	-61.90	-9.61	43.3
-34.14534	21.95577	221	ZAT_40	S-YRZ	30.3	14.6	-141.7	0.9	-128.6	0.9	37.9	1.2	41.8	1.2	-18.82	-4.02	60.1
-34.00735	23.00836	15	ZAT_41	S-YRZ	30.8	8.9	-132.9	1.1	-122.3	1.1	29.7	1.3	33.0	1.3	32.24	2.62	99.5
-34.03284	23.19790	177	ZAT_42	S-YRZ	30.3	8.4	-130.7	0.3	-117.5	0.3	39.1	1.0	42.9	1.0	-3.75	-2.06	62.2
-33.97422	23.47429	210	ZAT_43	S-YRZ	30.9	8.8	-141.1	0.4	-129.8	0.4	34.1	1.1	37.7	1.1	-1.64	-1.78	76.4
-33.93892	23.55270	254	ZAT_44	S-YRZ	30.7	10.5	-147.1	1.0	-135.0	1.0	34.2	0.6	38.0	0.6	-13.42	-3.31	72.0
-33.96399	23.89888	268	ZAT_46	S-YRZ	29.9	8.2	-140.6	0.9	-128.4	0.9	34.6	0.7	38.4	0.7	-3.10	-1.97	74.4
-33.96400	23.91580	262	ZAT_47	S-YRZ	29.8	6.6	-120.4	2.6	-107.9	2.6	29.5	0.2	33.2	0.2	56.51	5.77	108.4
-33.96427	24.26399	474	ZAT_48	S-YRZ	30.6	6.2	-166.8	1.8	-152.3	1.8	35.5	0.8	39.7	0.8	-55.63	-8.80	54.5
-33.85461	23.98538	521	ZAT_49	S-YRZ	31.3	9.0	-148.8	0.4	-133.2	0.4	31.1	0.7	35.5	0.7	-3.58	-2.04	83.7
-33.74370	23.46874	783	ZAT_50	S-YRZ	31.4	10.5	-154.2	0.8	-135.2	0.8	39.0	0.6	44.0	0.6	-47.81	-7.78	47.9
-34.01698	22.90064	175	ZAT_59	S-YRZ	30.8	5.9	-136.3	2.1	-123.1	2.1	27.2	0.6	30.9	0.6	36.70	3.19	107.9
-34.01228	22.89713	293	ZAT_60	S-YRZ	31.0	7.3	-151.3	2.2	-137.5	2.2	29.6	0.2	33.7	0.2	-1.85	-1.81	88.2
-33.99877	22.90078	219	ZAT_63	S-YRZ	31.3	9.4	-159.7	0.6	-148.7	0.6	29.9	2.2	33.5	2.2	-18.60	-3.99	81.9
-34.00727	22.91282	232	ZAT_66	S-YRZ	31.2	6.1	-147.4	2.3	-133.5	2.3	32.7	1.4	36.5	1.4	-7.33	-2.52	78.2
-34.01634	22.90761	198	ZAT_67	S-YRZ	31.0	6.4	-136.6	0.9	-123.5	0.9	26.8	1.3	30.5	1.3	37.46	3.29	109.0
-33.93807	23.15792	453	ZAT_68	S-YRZ	30.8	9.0	-139.4	0.7	-124.5	0.7	32.3	0.9	36.5	0.9	8.91	-0.41	84.7
-33.91210	23.13660	812	ZAT_69	S-YRZ	31.4	13.8	-160.7	0.7	-140.9	0.7	24.6	2.2	29.5	2.2	2.13	-1.29	103.1
-33.91561	22.41143	462	ZAT_70	S-YRZ	30.3	11.7	-160.1	1.1	-145.5	1.1	36.1	0.2	40.4	0.2	-46.08	-7.56	56.0
-33.76247	22.33530	548	ZAT_71	S-YRZ	31.0	16.1	-154.6	0.7	-139.1	0.7	34.7	1.0	39.2	1.0	-29.56	-5.41	65.2
-33.70352	22.28826	514	ZAT_72	S-YRZ	31.6	21.5	-148.8	0.5	-133.2	0.5	34.5	1.2	38.9	1.2	-17.77	-3.88	69.7
-33.39799	22.19341	629	ZAT_73	N-WRZ	30.8	11.2	-141.7	0.4	-124.1	0.4	35.0	0.5	39.6	0.5	-6.87	-2.46	72.0
-33.52905	21.84269	378	ZAT_74	N-WRZ	30.6	7.2	-130.7	2.3	-116.6	2.3	28.2	1.5	32.2	1.5	42.66	3.97	107.1
-33.45733	21.42406	546	ZAT_75	N-WRZ	31.1	12.3	-154.7	0.4	-139.2	0.4	33.0	1.3	37.4	1.3	-22.25	-4.46	72.4
-33.36601	21.36593	1171	ZAT_76	N-WRZ	30.2	8.6	-125.1	1.1	-99.9	1.1	35.6	0.9	41.5	0.9	20.98	1.15	80.0
-33.37444	21.32259	1190	ZAT_77	N-WRZ	30.6	11.5	-136.1	0.6	-111.2	0.6	30.3	0.8	36.2	0.8	23.68	1.50	95.1
-33.37817	20.95725	496	ZAT_78	N-WRZ	31.4	15.6	-136.4	0.8	-120.5	0.8	30.9	0.8	35.1	0.8	20.87	1.14	92.5
-33.21151	20.66490	903	ZAT_79	N-WRZ	31.4	19.8	-130.1	1.2	-108.7	1.2	34.3	1.3	39.5	1.3	17.84	0.75	82.3
-33.29058	19.45257	740	ZAT_81	WRZ	30.3	8.4	-157.3	2.9	-139.3	2.9	37.1	0.8	42.0	0.8	-49.58	-8.98	41.0
-33.22596	19.29576	1440	ZAT_82	WRZ	29.9	7.7	-154.9	1.5	-126.9	1.5	38.2	0.9	44.6	0.9	-51.36	-9.26	36.8
-33.11662	19.34096	991	ZAT_83	WRZ	30.5	5.7	-147.1	3.5	-125.3	3.5	37.9	1.2	43.3	1.2	-32.94	-6.43	44.8
-32.63049	19.07340	515	ZAT_85	WRZ	30.1	4.3	-123.4	2.0	-109.2	2.0	31.8	2.1	36.0	2.1	46.52	5.78	97.9
-32.62135	18.94451	566	ZAT_88	WRZ	30.8	10.4	-142.5	0.6	-127.7	0.6	35.8	0.6	40.0	0.6	-11.55	-3.14	60.8
-32.58613	18.92373	727	ZAT_89	WRZ	30.8	7.9	-155.0	0.9	-138.7	0.9	39.2	0.4	43.9	0.4	-54.52	-9.74	31.6
-32.72225	18.65356	351	ZAT_94	WRZ	30.4	6.5	-123.0	0.8	-135.5	0.3	37.6	0.8	41.4	0.9	20.46	1.78	67.2
-32.27839	18.41767	198	ZAT_95	WRZ	30.9	10.6	-145.0	0.3	-129.3	0.6	38.0	0.9	39.9	0.6	-26.53	-5.44	47.0
-32.60391	18.50614	203	ZAT_98	WRZ	30.5	9.7	-138.9	0.6	-123.0	0.8	36.5	0.6	37.6	0.8	-7.02	-2.44	60.1