{"refrec":{"BRefID":436720,"RR":"<b>Tian, H.-A.; van Manen, M.H.; Eich, C.; Jung, J.; van de Poll, W.H.; Reichart, G.-J.; Conway, T.M.; Middag, R.</b> (2025). Dissolved zinc and cadmium isotope systematics in the Amundsen and Weddell coastal Antarctic marginal seas. <i>Geochim. Cosmochim. Acta 399</i>: 93-110. <a href=\"https://dx.doi.org/10.1016/j.gca.2025.04.017\" target=\"_blank\">https://dx.doi.org/10.1016/j.gca.2025.04.017</a>","BEntID":434550,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Geochim. Cosmochim. Acta 399</i>: 93-110. <a href=\"https://dx.doi.org/10.1016/j.gca.2025.04.017\" target=\"_blank\">https://dx.doi.org/10.1016/j.gca.2025.04.017</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Tian, H.-A.; van Manen, M.H.; Eich, C.; Jung, J.; van de Poll, W.H.; Reichart, G.-J.; Conway, T.M.; Middag, R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Tian, H.-A. <i>et al.</i>","Englishabstract":"<span style=\"color:rgb(31,31,31);\">Coastal </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/antarctic-region\"><span style=\"color:rgb(31,31,31);\">Antarctica</span></a><span style=\"color:rgb(31,31,31);\"> is experiencing rapid environmental change with potential effects on regional marine trace element </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/agricultural-and-biological-sciences/biogeochemistry\"><span style=\"color:rgb(31,31,31);\">biogeochemistry</span></a><span style=\"color:rgb(31,31,31);\">. Here, we investigate the </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/biogeochemistry\"><span style=\"color:rgb(31,31,31);\">biogeochemistry</span></a><span style=\"color:rgb(31,31,31);\"> of two dissolved bioactive trace elements, zinc (Zn) and cadmium (Cd), and their </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/isotope-ratios\"><span style=\"color:rgb(31,31,31);\">isotope ratios</span></a><span style=\"color:rgb(31,31,31);\"> (δ</span><sup>66</sup><span style=\"color:rgb(31,31,31);\">Zn and δ</span><sup>114</sup><span style=\"color:rgb(31,31,31);\">Cd) in two coastal </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/marginal-sea\"><span style=\"color:rgb(31,31,31);\">marginal seas</span></a><span style=\"color:rgb(31,31,31);\"> with distinct </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/oceanographic-feature\"><span style=\"color:rgb(31,31,31);\">oceanographic features</span></a><span style=\"color:rgb(31,31,31);\"> – the Amundsen Sea with the intrusion of Circumpolar Deep Water (CDW) onto the Antarctic </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/agricultural-and-biological-sciences/continental-shelf\"><span style=\"color:rgb(31,31,31);\">continental shelf</span></a><span style=\"color:rgb(31,31,31);\">, and the Weddell Sea where formation of </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/antarctic-bottom-water\"><span style=\"color:rgb(31,31,31);\">Antarctic Bottom Water</span></a><span style=\"color:rgb(31,31,31);\"> occurs. In the Amundsen Sea, our isotope data show CDW predominantly controls δ</span><sup>66</sup><span style=\"color:rgb(31,31,31);\">Zn and δ</span><sup>114</sup><span style=\"color:rgb(31,31,31);\">Cd on the </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/continental-shelf\"><span style=\"color:rgb(31,31,31);\">continental shelf</span></a><span style=\"color:rgb(31,31,31);\">. This result is consistent with previous concentration-focused studies that suggested only a negligible addition of Zn and Cd from continental sediments and ice shelf </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/meltwater\"><span style=\"color:rgb(31,31,31);\">meltwater</span></a><span style=\"color:rgb(31,31,31);\">, and other processes (e.g., scavenging) play a limited role in their cycling on the shelf region. In the Weddell Sea, homogeneous δ</span><sup>66</sup><span style=\"color:rgb(31,31,31);\">Zn and δ</span><sup>114</sup><span style=\"color:rgb(31,31,31);\">Cd within different </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/water-mass\"><span style=\"color:rgb(31,31,31);\">water masses</span></a><span style=\"color:rgb(31,31,31);\"> across the Antarctic Peninsula shelf, while Zn and Cd concentrations increase via physical mixing with deep water masses, suggest a preformed isotope signature on the continental shelf. In </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/agricultural-and-biological-sciences/surface-water\"><span style=\"color:rgb(31,31,31);\">surface waters</span></a><span style=\"color:rgb(31,31,31);\"> of both regions, δ</span><sup>114</sup><span style=\"color:rgb(31,31,31);\">Cd exhibited </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/agricultural-and-biological-sciences/isotope-fractionation\"><span style=\"color:rgb(31,31,31);\">isotope fractionation</span></a><span style=\"color:rgb(31,31,31);\"> linked to </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/biological-uptake\"><span style=\"color:rgb(31,31,31);\">biological uptake</span></a><span style=\"color:rgb(31,31,31);\">, with different Rayleigh closed system fractionation factors (α&nbsp;=&nbsp;R</span><sub>biomass</sub><span style=\"color:rgb(31,31,31);\">/R</span><sub>seawater</sub><span style=\"color:rgb(31,31,31);\">) for regions dominated by haptophytes (0.99930–0.99960) and diatoms (0.99970–0.99995) and we speculate that such differences may be associated with variability between species. In contrast, estimated fractionation factors for Zn in haptophytes (0.99995) and diatoms (0.99980–0.99995) dominated blooms are similar and comparable to reported values in the </span><a href=\"https://www-sciencedirect-com.proxy-ub.rug.nl/topics/earth-and-planetary-sciences/southern-ocean\"><span style=\"color:rgb(31,31,31);\">Southern Ocean</span></a><span style=\"color:rgb(31,31,31);\"> (0.99995&nbsp;±&nbsp;0.00001). At the intermediate depth (250–1500&nbsp;m) in the Weddell Sea, significantly lower δ</span><sup>114</sup><span style=\"color:rgb(31,31,31);\">Cd in the inner gyre compared to the outer gyre implies Cd regeneration and reduced ventilation. This pattern was not observed for δ⁶⁶Zn, likely due to its smaller biological fractionation in the surface. These findings confirm the role of CDW as the main source of Zn and Cd to the Amundsen Sea and the importance of physical mixing in setting global dissolved Zn and Cd distributions during the formation of deep waters in the Weddell Sea, providing insights into the impacts of regional coastal systems on the biogeochemistry of Zn and Cd.</span>","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Dissolved zinc and cadmium isotope systematics in the Amundsen and Weddell coastal Antarctic marginal seas","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-19 01:32:32.487981","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"<p style=\"margin-left:0px;\">GEOTRACES; Trace metals; Isotope compositions; Biogeochemistry","OtherDescriptors":null,"Notes":null,"AnaPub":2025,"MonPub":null,"DateUpdate":"2025-12-17","DateCreate":"2025-12-17","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1,"DOI":"10.1016/j.gca.2025.04.017"},"refs":null,"anarec":{"AnaID":436720,"PubliDate":2025,"Pagination":"93-110","XtraPublOfAnaID":null,"ISBN":null,"Volume":"399","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42901,"SerRR":"Geochimica et Cosmochimica Acta. Elsevier: Oxford,New York etc..  ISSN 0016-7037; e-ISSN 1872-9533","StandardTitleSer":"Geochimica et Cosmochimica Acta","ISSN":"0016-7037","AbbrevSer":"Geochim. Cosmochim. Acta","StandardTitleMon":null,"StartPage":93,"Pages":18,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Tian","Firstname":"Hung-An","Initials":"H.-A.","Affiliation":"OCS","Discriminator":null,"CorporateFlag":0,"BEntID":434550,"AutID":613305,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"NIOZ","InsFSN":"Koninklijk Nederlands Instituut voor Onderzoek der Zee","ORCID":null,"PersID":46142,"InsID":397},{"AutName":"van Manen","Firstname":"Mathijs","Initials":"M.H.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":434550,"AutID":438391,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"OCS","InsFSN":"Koninklijk Nederlands Instituut voor Onderzoek der Zee; Ocean Sciences","ORCID":"0000-0002-6016-9161","PersID":39856,"InsID":13654},{"AutName":"Eich","Firstname":"Charlotte","Initials":"C.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":434550,"AutID":506163,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"MMB","InsFSN":"Koninklijk Nederlands Instituut voor Onderzoek der Zee; Marine Microbiology and Biogeochemistry","ORCID":null,"PersID":null,"InsID":13655},{"AutName":"Jung","Firstname":"Jinyoung","Initials":"J.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":434550,"AutID":443295,"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":"van de Poll","Firstname":"Willem","Initials":"W.H.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":434550,"AutID":231839,"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":"Reichart","Firstname":"Gert-Jan","Initials":"G.-J.","Affiliation":"OCS","Discriminator":null,"CorporateFlag":0,"BEntID":434550,"AutID":205637,"OrderNr":6,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"OCS","InsFSN":"Koninklijk Nederlands Instituut voor Onderzoek der Zee; Ocean Sciences","ORCID":"0000-0002-7256-2243","PersID":15347,"InsID":13654},{"AutName":"Conway","Firstname":"Tim","Initials":"T.M.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":434550,"AutID":259572,"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":"Middag","Firstname":"Rob","Initials":"R.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":434550,"AutID":252610,"OrderNr":8,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"OCS","InsFSN":"Koninklijk Nederlands Instituut voor Onderzoek der Zee; Ocean Sciences","ORCID":"0000-0002-3326-530X","PersID":29858,"InsID":13654}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":434550,"BEntPrivate":null,"availability":[{"BInstID":418499,"LibID":2779,"BRefID":436720,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"418499","RFID":null,"PaidValue":null,"Medium":"Server","Description":null,"Acronym":null,"Library":"NIOZ","DutchTerm":null,"URL":null,"ClassifID":260,"Classification":"NIOZ Open Repository","ReqLink":null,"ClassifTypID":1,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":1,"InternalReq":null,"LoggedInReq":null,"Disclaimer":"Disclaimer_NIOZ","DutchDisclaimer":null,"FileFormat":".pdf","FileDescr":"pdf","InsPub":1,"InsID":397,"FileFormID":6,"LendableFlag":null,"PublicFlag":1,"orderLib":"NIOZ","Notes":null,"AccConID":21,"AccessConstraint":"Attribution (CC BY)","LicURL":"https://creativecommons.org/licenses/by/4.0/"}],"litstyles":null,"thespers":null,"arch2discl":805,"SERpubls":[{"PublName":"Elsevier","City":"Oxford,New York etc."}],"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":{"805":{"SpName":"Koninklijk Nederlands Instituut voor Onderzoek der Zee","SpColID":805,"ParSpColID":null,"TopParID":null,"ShortName":"NIOZ","URLLocation":"https://www.vliz.be/imis/nioz/imis.php?refid=","LibID":2779,"OpenRepoFlag":1,"SpTypID":1,"TopParIDNotWebsite":null,"SpColPath":"NIOZ"}},"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":434550,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"},{"BEntID":434550,"AbstractFlag":1,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":[{"URL":"https://dx.doi.org/10.1016/j.gca.2025.04.017","externalID":"10.1016/j.gca.2025.04.017","URLTypeCode":"DOI","URLID":155099,"URLTypID":13,"URLType":"DOI","URLPrefix":"http://dx.doi.org/"}],"thesterms":null,"taxterms":null,"geoterms":null,"othterms":null,"asfacodes":null,"asfa2codes":null,"thestermsFRIS":null,"taxtermsFRIS":null,"geotermsFRIS":null,"othtermsFRIS":null,"resmessage":"","complete":1,"sessions":{"newSesName":"daan.van.loon@nioz.nl","newSesDate":{"date":"2025-12-17 10:00:24.450000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"daan.van.loon@nioz.nl","updSesDate":{"date":"2025-12-17 10:00:24.450000","timezone_type":3,"timezone":"Europe/Brussels"}}}