Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 Humphries Marc Marc.Humphries@wits.ac.za 0000-0002-4047-1451 Zabel Matthias mzabel@uni-bremen.de 0000-0003-4681-1821 Sebag David davidsebag.ird@gmail.com 0000-0002-6446-6921 Hahn Annette hahnette@hotmail.com 0000-0002-3647-473X Schefuß Enno eschefuss@marum.de 0000-0002-5960-930X 2021 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 dataset https://doi.org/10.1594/PANGAEA.935586 2021-09-08T08:51:20 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. Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 Humphries Marc Marc.Humphries@wits.ac.za 0000-0002-4047-1451 Zabel Matthias mzabel@uni-bremen.de 0000-0003-4681-1821 Sebag David davidsebag.ird@gmail.com 0000-0002-6446-6921 Hahn Annette hahnette@hotmail.com 0000-0002-3647-473X Schefuß Enno eschefuss@marum.de 0000-0002-5960-930X 2022 Origin, transport, and retention of fluvial sedimentary organic matter in South Africa's largest freshwater wetland, Mkhuze Wetland System journal article Biogeosciences 19(11) https://doi.org/10.5194/bg-19-2881-2022 2881-2902 32.01755 32.561083 -27.9457 -27.5839166 32.45432308431372 -27.803903623529422 0.1 0.1 not specified TRACES Tracing Human and Climate impacts in South Africa MARUM - Center for Marine Environmental Sciences, University Bremen MARUM http://www.marum.de/ https://ror.org/04ers2y35 Federal Ministry of Education and Research BMBF https://www.bmftr.bund.de https://doi.org/10.13039/501100002347 03F0798A Tracing Human and Climate impacts in South Africa https://foerderportal.bund.de/foekat/jsp/SucheAction.do?actionMode=view&fkz=03F0798A MK01-10 -27.5987 32.3020833 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK02-2 -27.654833 32.403083 Mkuze River MK02-3 -27.654833 32.403083 Mkuze River MK03-1 -27.6628 32.419883 Mkuze River MK03-2 -27.6628 32.419883 Mkuze River MK03-3 -27.6628 32.419883 Mkuze River MK04-1 -27.5943666 32.01755 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK05-1 -27.5839166 32.1471333 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK06-1 -27.5918333 32.2185333 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK07-2 -27.841167 32.478383 Mkuze River MK07-3 -27.841167 32.478383 Mkuze River MK07-4 -27.841167 32.478383 Mkuze River MK07-5_1 -27.841167 32.478383 Mkuze River MK07-5_2 -27.841167 32.478383 Mkuze River MK07-6 -27.841167 32.478383 Mkuze River MK07-7 -27.841167 32.478383 Mkuze River MK08-2 -27.8895833 32.48305 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK08-4 -27.8863 32.4837833 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK09-2 -27.8523833 32.4768333 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK10-1 -27.69625 32.47455 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK12-1 -27.6961166 32.4679166 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK12-3 -27.696117 32.467917 Mkuze River MK13-1 -27.8624166 32.4804666 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK14-1 -27.8566666 32.47855 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK15-1 -27.8650333 32.4840333 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK16-1 -27.87005 32.4845 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK17-1 -27.8738 32.4838 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK18-1 -27.8779666 32.48345 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK19-1 -27.8818833 32.4822833 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK20-1 -27.725417 32.48675 Mkuze River MK20-2 -27.725417 32.48675 Mkuze River MK21-1 -27.7459666 32.5021333 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK21-4 -27.745967 32.502133 Mkuze River MK21-5 -27.745967 32.502133 Mkuze River MK22-1 -27.7459666 32.5021333 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK23-1 -27.8526166 32.4749166 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK24-4 -27.8560833 32.4793333 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK24-5 -27.856083 32.479333 Mkuze River MK25-1 -27.8948 32.4832166 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK26-1 -27.8994833 32.4834333 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK27-1 -27.90495 32.48485 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK28-1 -27.9082666 32.4858666 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK29-1 -27.9130166 32.4860166 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK30-1 -27.9177666 32.4867333 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK31-1 -27.9225333 32.4869333 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK32-1 -27.92675 32.4893666 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK33-1 -27.9312833 32.4912 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK34-1 -27.9360833 32.4930166 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK35-1 -27.9402666 32.4952166 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK36-1 -27.9457 32.497 Mkuze River TRACES fieldtrip to the Mkuze (MK) River catchment in November/December 2018 MK37-2 -27.599083 32.561083 Mkuze River 2231 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Event label Event Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 Event Latitude of event Latitude Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 Latitude Longitude of event Longitude Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 Longitude DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 Depth sed [m] Sample type Samp type Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 Samp type Sample comment Sample comment Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 Sample comment Species Species https://en.wikipedia.org/wiki/Species species Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 Species n-Alkane C16 C16 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C16 [ng/g] n-Alkane C17 C17 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C17 [ng/g] n-Alkane C18 C18 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C18 [ng/g] n-Alkane C19 C19 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C19 [ng/g] n-Alkane C20 C20 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C20 [ng/g] n-Alkane C21 C21 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C21 [ng/g] n-Alkane C22 C22 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C22 [ng/g] n-Alkane C23 C23 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C23 [ng/g] n-Alkane C24 C24 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C24 [ng/g] n-Alkane C25 C25 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C25 [ng/g] n-Alkane C26 C26 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C26 [ng/g] n-Alkane C27 C27 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C27 [ng/g] n-Alkane C28 C28 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C28 [ng/g] n-Alkane C29 C29 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C29 [ng/g] n-Alkane C30 C30 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C30 [ng/g] n-Alkane C31 C31 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C31 [ng/g] n-Alkane C32 C32 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C32 [ng/g] n-Alkane C33 C33 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C33 [ng/g] n-Alkane C34 C34 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C34 [ng/g] n-Alkane C35 C35 ng/g Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C35 [ng/g] n-Alkane C23, δ13C C23 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C23 δ13C [‰ PDB] n-Alkane C23, δ13C, standard deviation C23 δ13C std dev ± δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C23 δ13C std dev [±] n-Alkane C25, δ13C C25 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C25 δ13C [‰ PDB] n-Alkane C25, δ13C, standard deviation C25 δ13C std dev ± δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C25 δ13C std dev [±] n-Alkane C27, δ13C C27 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C27 δ13C [‰ PDB] n-Alkane C27, δ13C, standard deviation C27 δ13C std dev ± δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C27 δ13C std dev [±] n-Alkane C29, δ13C C29 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C29 δ13C [‰ PDB] n-Alkane C29, δ13C, standard deviation C29 δ13C std dev ± δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C29 δ13C std dev [±] n-Alkane C31, δ13C C31 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C31 δ13C [‰ PDB] n-Alkane C31, δ13C, standard deviation C31 δ13C std dev ± δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C31 δ13C std dev [±] n-Alkane C33, δ13C C33 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C33 δ13C [‰ PDB] n-Alkane C33, δ13C, standard deviation C33 δ13C std dev ± δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C33 δ13C std dev [±] n-Alkane C35, δ13C C35 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C35 δ13C [‰ PDB] n-Alkane C35, δ13C, standard deviation C35 δ13C std dev ± δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C35 δ13C std dev [±] n-Alkane C25, δD C25 δD ‰ SMOW Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C25 δD [‰ SMOW] n-Alkane C25, δD, standard deviation C25 δD std dev ± standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C25 δD std dev [±] n-Alkane C27, δD C27 δD ‰ SMOW Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C27 δD [‰ SMOW] n-Alkane C27, δD, standard deviation C27 δD std dev ± standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C27 δD std dev [±] n-Alkane C29, δD C29 δD ‰ SMOW Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C29 δD [‰ SMOW] n-Alkane C29, δD, standard deviation C29 δD std dev ± standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C29 δD std dev [±] n-Alkane C31, δD C31 δD ‰ SMOW Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C31 δD [‰ SMOW] n-Alkane C31, δD, standard deviation C31 δD std dev ± standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C31 δD std dev [±] n-Alkane C33, δD C33 δD ‰ SMOW Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C33 δD [‰ SMOW] n-Alkane C33, δD, standard deviation C33 δD std dev ± standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C33 δD std dev [±] n-Alkane C35, δD C35 δD ‰ SMOW Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C35 δD [‰ SMOW] n-Alkane C35, δD, standard deviation C35 δD std dev ± standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C35 δD std dev [±] Carbon, organic, total TOC % carbon C https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:27594 organic total https://www.oxforddictionaries.com/definition/american_english/total Dimensionless Ratio ψ Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 TOC [%] Nitrogen, total TN % nitrogen N https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:25555 total https://www.oxforddictionaries.com/definition/american_english/total Dimensionless Ratio ψ Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 TN [%] δ13C, bulk carbonate δ13C bulk carb ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 δ13C bulk carb [‰ PDB] Carbon/Nitrogen ratio C/N carbon C https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:27594 nitrogen N https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:25555 ratio Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 C/N Hydrogen index HI Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 HI I-index I-index Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 I-index R-Index R-Index https://doi.org/10.1016/j.geoderma.2016.08.025 Gensel Julia julchen3988@hotmail.de 0000-0002-8948-2231 R-Index CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable d13C dD n-alkanes organic matter plant waxes Rock-Eval South Africa wetland author22432 author43342 author60119 author626 author63889 author69503 award135 curlevel30 event2906661 event2906662 event2906663 event2906664 event2906667 event2906668 event2906670 event2906671 event2906673 event2906674 event2906675 event2906676 event2906677 event2906678 event2906679 event2906680 event2906681 event2906682 event2906683 event2906684 event2906686 event2906687 event2906688 event2906689 event2906690 event2906691 event2906692 event2906693 event2906694 event2906695 event2906696 event2906697 event2982546 event2982547 event2982548 event2982549 event2982550 event2982551 event2982552 event2982553 event2982554 event2982555 event2982556 event2982557 event2982558 event2982559 event2982560 event2982561 event2982562 event2982563 event2982564 funder20473 geocode1 geocode1600 geocode1601 inst277 journal2146 license21 param101914 param101915 param102489 param104817 param104818 param150649 param150650 param1547 param155102 param170952 param171320 param173129 param18011 param185845 param24478 param24479 param24480 param24481 param24482 param24483 param24484 param24485 param24486 param24487 param24488 param24489 param24490 param24491 param24492 param24493 param24494 param24495 param24496 param24497 param27732 param27734 param27736 param27738 param27740 param49095 param49096 param49097 param502722 param502723 param505327 param67 param7053 param7059 param73 param80161 param84425 param84428 param84429 param86470 param96392 param96393 pi69503 project4301 ref110863 term1073089 term1073131 term2663825 term2687818 term37764 term38253 term38263 term38477 term38548 term41056 term43794 term43863 term44419 term47183 term47485 term47498 term47957 term47974 term49019 term49384 term53862 term69091 topotype1