{"refrec":{"BRefID":239866,"RR":"<b>Hawkes, J.A.; Connelly, D.P.; Rijkenberg, M.J.A.; Achterberg, E.P.</b> (2014). The importance of shallow hydrothermal island arc systems in ocean biogeochemistry. <i>Geophys. Res. Lett. 41(3)</i>: 942-947. <a href=\"http://dx.doi.org/10.1002/2013GL058817\" target=\"_blank\">dx.doi.org/10.1002/2013GL058817</a>","BEntID":231549,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Geophys. Res. Lett. 41(3)</i>: 942-947. <a href=\"https://dx.doi.org/10.1002/2013GL058817\" target=\"_blank\">https://dx.doi.org/10.1002/2013GL058817</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Hawkes, J.A.; Connelly, D.P.; Rijkenberg, M.J.A.; Achterberg, E.P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Hawkes, J.A. <i>et al.</i>","Englishabstract":"Hydrothermal venting often occurs at submarine volcanic calderas on island arc chains, typically at shallower depths than mid-ocean ridges. The effect of these systems on ocean biogeochemistry has been under-investigated to date. Here we show that hydrothermal effluent from an island arc caldera was rich in Fe(III) colloids (0.02-0.2 mu m; 46% of total Fe), contributing to a fraction of hydrothermal Fe that was stable in ocean water. Iron(III) colloids from island arc calderas may be transferred into surrounding waters (generally 0-1500m depth) by ocean currents, thereby potentially stimulating surface ocean primary productivity. Hydrothermal Fe oxyhydroxide particles (>0.2 mu m) were also pervasive in the studied caldera and contained high concentrations of oxyanions of phosphorus (P), vanadium (V), arsenic (As), and manganese (Mn). Hydrothermal island arcs may be responsible for>50% of global hydrothermal P scavenging and>40% V scavenging, despite representing <10% of global hydrothermal fluid flow.<br>Key Points<br><list list-type=\"bulleted\" id=\"grl51349-list-0001\"> <list-item id=\"grl51349-li-0001\">A large portion of iron from hydrothermal island arc calderas exists as colloids <list-item id=\"grl51349-li-0002\">These colloids coprecipitate important amounts of dissolved oxyanions <list-item id=\"grl51349-li-0003\">Iron colloids from hydrothermal island arcs may stimulate primary productivity","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"The importance of shallow hydrothermal island arc systems in ocean biogeochemistry","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"iron; hydrothermal; colloid; island arc; scavenging; caldera</td>","OtherDescriptors":null,"Notes":null,"AnaPub":2014,"MonPub":null,"DateUpdate":"2014-09-03","DateCreate":"2014-07-14","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000332990500028","VABBcode":null,"OpenAcc":1,"DOI":"10.1002/2013GL058817"},"refs":null,"anarec":{"AnaID":239866,"PubliDate":2014,"Pagination":"942-947","XtraPublOfAnaID":null,"ISBN":null,"Volume":"41","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42920,"SerRR":"Geophysical Research Letters. American Geophysical Union: Washington.  ISSN 0094-8276; e-ISSN 1944-8007","StandardTitleSer":"Geophysical Research Letters","ISSN":"0094-8276","AbbrevSer":"Geophys. Res. 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