PANGAEA_935586
Bulk organic matter composition, n-alkane distribution patterns, and compound-specific stable isotope compositions of modern surface sediments and plants of South Africa's largest freshwater wetland
Gensel, Julia; Humphries, Marc; Zabel, Matthias; Sebag, David; Hahn, Annette; Schefuß, Enno
Bulk organic matter composition, n-alkane distribution patterns, and compound-specific stable isotope compositions of modern surface sediments and plants of South Africa's largest freshwater wetland
2021-09-08
PANGAEA
Dataset
https://doi.pangaea.de/10.1594/PANGAEA.935586
Investigator
Julia
Gensel
julchen3988@hotmail.de
Earth Science
Event label
Latitude of event
Longitude of event
DEPTH, sediment/rock
Sample type
Sample comment
Species
n-Alkane C16
n-Alkane C17
n-Alkane C18
n-Alkane C19
n-Alkane C20
n-Alkane C21
n-Alkane C22
n-Alkane C23
n-Alkane C24
n-Alkane C25
n-Alkane C26
n-Alkane C27
n-Alkane C28
n-Alkane C29
n-Alkane C30
n-Alkane C31
n-Alkane C32
n-Alkane C33
n-Alkane C34
n-Alkane C35
n-Alkane C23, δ13C
n-Alkane C23, δ13C, standard deviation
n-Alkane C25, δ13C
n-Alkane C25, δ13C, standard deviation
n-Alkane C27, δ13C
n-Alkane C27, δ13C, standard deviation
n-Alkane C29, δ13C
n-Alkane C29, δ13C, standard deviation
n-Alkane C31, δ13C
n-Alkane C31, δ13C, standard deviation
n-Alkane C33, δ13C
n-Alkane C33, δ13C, standard deviation
n-Alkane C35, δ13C
n-Alkane C35, δ13C, standard deviation
n-Alkane C25, δD
n-Alkane C25, δD, standard deviation
n-Alkane C27, δD
n-Alkane C27, δD, standard deviation
n-Alkane C29, δD
n-Alkane C29, δD, standard deviation
n-Alkane C31, δD
n-Alkane C31, δD, standard deviation
n-Alkane C33, δD
n-Alkane C33, δD, standard deviation
n-Alkane C35, δD
n-Alkane C35, δD, standard deviation
Carbon, organic, total
Nitrogen, total
δ13C, bulk carbonate
Carbon/Nitrogen ratio
Hydrogen index
I-index
R-Index
geoscientificInformation
d13C
dD
MK01-10
MK02-2
MK02-3
MK03-1
MK03-2
MK03-3
MK04-1
MK05-1
MK06-1
MK07-2
MK07-3
MK07-4
MK07-5_1
MK07-5_2
MK07-6
MK07-7
MK08-2
MK08-4
MK09-2
MK10-1
MK12-1
MK12-3
MK13-1
MK14-1
MK15-1
MK16-1
MK17-1
MK18-1
MK19-1
MK20-1
MK20-2
MK21-1
MK21-4
MK21-5
MK22-1
MK23-1
MK24-4
MK24-5
MK25-1
MK26-1
MK27-1
MK28-1
MK29-1
MK30-1
MK31-1
MK32-1
MK33-1
MK34-1
MK35-1
MK36-1
MK37-2
n-alkanes
organic matter
plant waxes
Rock-Eval
South Africa
wetland
Complete
-27.9457
-27.5839166
32.01755
32.561083
0.1 m (DEPTH, sediment/rock)
0.1 m (DEPTH, sediment/rock)
TRACES
Tracing Human and Climate impacts in South Africa
unrestricted
CC-BY-4.0: Creative Commons Attribution 4.0 International
English
PANGAEA
Data Publisher for Earth & Environmental Science
https://www.pangaea.de/
Data Center Contact
Michael
Diepenbroek
info@pangaea.de
Leobener Str.
Bremen
Bremen
28359
Germany
online
2231 data points
text/tab-separated-values
Gensel, Julia; Humphries, Marc; Zabel, Matthias; Sebag, David; Hahn, Annette; Schefuß, Enno (2022): Origin, transport, and retention of fluvial sedimentary organic matter in South Africa's largest freshwater wetland, Mkhuze Wetland System. Biogeosciences, 19(11), 2881-2902, https://doi.org/10.5194/bg-19-2881-2022
Surface sediments (n=41) reflecting modern times (uppermost 10 cm) were collected during a November/December 2018 field campaign along the course of the Mkhuze River and a transect into Lake St. Lucia (KwaZulu Natal Province, South Africa). In addition, plant species (n=10) were collected based on previous reports of dominant vegetation communities and local occurrences. All samples were extracted soon after with a mixture of dichloromethane and methanol (9:1), purified, and fractionated. The apolar fraction was finally analyzed for its n-alkane concentrations and corresponding compound-specific carbon and hydrogen isotope compositions. Sub-samples of the surface sediments were also analyzed for (i) organic matter content (total organic carbon) and composition (d13C, carbon-to-nitrogen ratio) after decalcification, and (ii) for thermal indices (Hydrogen Index, R-index, I-index) using Rock-Eval analyses. The study's objective was to evaluate the most extensive freshwater wetland system in South Africa regarding its current condition and functioning by identifying the origin and transport pathways of sedimentary organic matter. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.935586"!
https://doi.org/10.1016/j.geoderma.2016.08.025
R-Index
https://doi.org/10.5194/bg-19-2881-2022
Origin, transport, and retention of fluvial sedimentary organic matter in South Africa's largest freshwater wetland, Mkhuze Wetland System
https://en.wikipedia.org/wiki/Species
Species
DIF
9.4
2021-09-08
2026-07-15