In this study, published and unpublished data on bulk organic matter from surficial sediments along the Southwestern Atlantic Margin (SAM) were gathered to identify sources and understand carbon transport over this large and complex area under the regime of strongly coupled climatic-hydrological-oceanographic interactions. To achieve this goal, total organic carbon (TOC), total nitrogen (TN), stable carbon (δ13C), and nitrogen (δ15N) isotopes, as well as calcium carbonate data from 242 sedimentary samples over the SAM were analyzed. Cluster analysis defined three geochemically distinct groups, closely related to sedimentary and hydrodynamic controls. Our results show that the latitude of 28°S marks a transition region in terms of the sedimentary bulk organic matter. To the south, organic material is strongly influenced by the continental contribution from the La Plata River and by the action of the Brazilian Coastal Current, whereas to the north, the contribution of La Plata River gradually decreases. Oceanographic fronts, currents, and river supply are the main mechanisms that drive organic matter distribution over the SAM.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Distributions and sources of bulk organic matter from surface sediments along the Southwestern Atlantic Margin","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-31 01:32:12.791729","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"La Plata River; Rio de la Plata; Total organic carbon; Total nitrogen; Stable carbon isotopes; Stable nitrogen isotopes; Brazilian coastal current; Brazil current; 813C; 815N","OtherDescriptors":null,"Notes":null,"AnaPub":2024,"MonPub":null,"DateUpdate":"2024-02-19","DateCreate":"2024-02-16","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001140177300001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.jsames.2023.104729"},"refs":null,"anarec":{"AnaID":382717,"PubliDate":2024,"Pagination":"104729","XtraPublOfAnaID":null,"ISBN":null,"Volume":"133","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":231896,"SerRR":"Journal of South American Earth Sciences. Elsevier: Oxford; New York; . ISSN 0895-9811; e-ISSN 1873-0647","StandardTitleSer":"Journal of South American Earth Sciences","ISSN":"0895-9811","AbbrevSer":"J. South Am. Earth Sci.","StandardTitleMon":null,"StartPage":14,"Pages":null,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Araujo","Firstname":"Ligia","Initials":"L.D.","Affiliation":"Univ Sao Paulo, Praca Oceanog, Inst Oceanog, BR-05508120 Sao Paulo, Brazil.","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":553550,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Freitas","Firstname":"Felipe","Initials":"F.S.","Affiliation":"Université Libre de Bruxelles","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":533594,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"ULB","InsFSN":"Université Libre de Bruxelles","ORCID":"0000-0001-8279-5772","PersID":40127,"InsID":4535},{"AutName":"Santos","Firstname":"Felipe","Initials":"F.R.","Affiliation":"Univ Sao Paulo, Praca Oceanog, Inst Oceanog, BR-05508120 Sao Paulo, Brazil.","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":553552,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Taniguchi","Firstname":"Satie","Initials":"S.","Affiliation":"Univ Sao Paulo, Praca Oceanog, Inst Oceanog, BR-05508120 Sao Paulo, Brazil.","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":553553,"OrderNr":4,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Timoszczuk","Firstname":"Cristian","Initials":"C.T.","Affiliation":"Univ Sao Paulo, Praca Oceanog, Inst Oceanog, BR-05508120 Sao Paulo, Brazil.","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":553554,"OrderNr":5,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Burone","Firstname":"Leticia","Initials":"L.","Affiliation":"Univ Republica, Fac Ciencias, Inst Ecol & Ciencias Ambientales, Igua 4225, Montevideo 11400, Uruguay.","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":553555,"OrderNr":6,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Lourenco","Firstname":"Rafael","Initials":"R.A.","Affiliation":"Univ Sao Paulo, Praca Oceanog, Inst Oceanog, BR-05508120 Sao Paulo, Brazil.","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":553556,"OrderNr":7,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Neves","Firstname":"Patricia","Initials":"P.A.","Affiliation":"Univ Sao Paulo, Praca Oceanog, Inst Oceanog, BR-05508120 Sao Paulo, Brazil.","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":553557,"OrderNr":8,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Rodriguez","Firstname":"Matilde","Initials":"M.","Affiliation":"Univ Republica, Fac Ciencias, Inst Ecol & Ciencias Ambientales, Igua 4225, Montevideo 11400, Uruguay.","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":553558,"OrderNr":9,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Mahiques","Firstname":"Michel de","Initials":"M.M.D.","Affiliation":"Univ Sao Paulo, Praca Oceanog, Inst Oceanog, BR-05508120 Sao Paulo, Brazil.","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":553559,"OrderNr":10,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Bicego","Firstname":"Marcia","Initials":"M.C.","Affiliation":"Univ Sao Paulo, Praca Oceanog, Inst Oceanog, BR-05508120 Sao Paulo, Brazil.","Discriminator":null,"CorporateFlag":0,"BEntID":380458,"AutID":553561,"OrderNr":11,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":396155,"LibID":36,"BRefID":382717,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":null,"ShelfLocCode":"396155","RFID":null,"PaidValue":null,"Medium":"Server","Description":"Interne VLIZ documenten","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Non-open access","URL":null,"ClassifID":228,"Classification":"Non-open access","ReqLink":1,"ClassifTypID":3,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":1,"InternalReq":1,"LoggedInReq":1,"Disclaimer":"Disclaimer_VLIZ_Intern","DutchDisclaimer":"
Deze publicatie is enkel beschikbaar voor persoonlijk gebruik binnen de Innovocean site
en mag op geen enkele manier verder worden verspreid.