Publication Date:
2024-06-12
Description:
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.
Keywords:
Carbon, organic, total; Carbon/Nitrogen ratio; d13C; dD; DEPTH, sediment/rock; Event label; Hydrogen index; I-index; Latitude of event; Longitude of event; 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; Mkuze River; 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 C23, δ13C; n-Alkane C23, δ13C, standard deviation; n-Alkane C24; n-Alkane C25; n-Alkane C25, δ13C; n-Alkane C25, δ13C, standard deviation; n-Alkane C25, δD; n-Alkane C25, δD, standard deviation; n-Alkane C26; n-Alkane C27; n-Alkane C27, δ13C; n-Alkane C27, δ13C, standard deviation; n-Alkane C27, δD; n-Alkane C27, δD, standard deviation; n-Alkane C28; n-Alkane C29; n-Alkane C29, δ13C; n-Alkane C29, δ13C, standard deviation; n-Alkane C29, δD; n-Alkane C29, δD, standard deviation; n-Alkane C30; n-Alkane C31; n-Alkane C31, δ13C; n-Alkane C31, δ13C, standard deviation; n-Alkane C31, δD; n-Alkane C31, δD, standard deviation; n-Alkane C32; n-Alkane C33; n-Alkane C33, δ13C; n-Alkane C33, δ13C, standard deviation; n-Alkane C33, δD; n-Alkane C33, δD, standard deviation; n-Alkane C34; n-Alkane C35; n-Alkane C35, δ13C; n-Alkane C35, δ13C, standard deviation; n-Alkane C35, δD; n-Alkane C35, δD, standard deviation; n-alkanes; Nitrogen, total; organic matter; plant waxes; R-Index; Rock-Eval; Sample comment; Sample type; South Africa; Species; TRACES; Tracing Human and Climate impacts in South Africa; wetland; δ13C, bulk carbonate
Type:
Dataset
Format:
text/tab-separated-values, 2231 data points
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