1. Identity statement | |
Reference Type | Conference Paper (Conference Proceedings) |
Site | mtc-m21d.sid.inpe.br |
Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
Identifier | 8JMKD3MGP3W34T/4BTLCRB |
Repository | sid.inpe.br/mtc-m21d/2024/08.28.17.03 |
Metadata Repository | sid.inpe.br/mtc-m21d/2024/08.28.17.03.07 |
Metadata Last Update | 2024:08.29.11.02.54 (UTC) administrator |
Secondary Key | INPE--PRE/ |
Citation Key | AvelinaCunLudKocKla:2024:InSpDi |
Title | Increased spring dissolved organic carbon and nitrogen production and DOC/DON ratio decrease along the Atlantic sector of the Southern Ocean |
Year | 2024 |
Access Date | 2024, Nov. 05 |
Secondary Type | PRE CI |
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2. Context | |
Author | 1 Avelina, Raquel 2 Cunha, Letķcia Cotrim da 3 Ludwichowski, Kai-Uwe 4 Koch, Boris P. 5 Klaas, Christine |
Group | 1 2 DIIAV-CGCT-INPE-MCTI-GOV-BR |
Affiliation | 1 Universidade do Estado do Rio de Janeiro (UERJ) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Alfred-Wegener-Institut Helmholtz Zentrum für Polar - und Meeresforschung 4 Alfred-Wegener-Institut Helmholtz Zentrum für Polar - und Meeresforschung 5 Alfred-Wegener-Institut Helmholtz Zentrum für Polar - und Meeresforschung |
Conference Name | Open Science Conference (SCAR), 11 |
Conference Location | Pucón, Chile |
Date | 19-23 aug. 2024 |
Book Title | Proceedings |
History (UTC) | 2024-08-28 17:03:07 :: simone -> administrator :: 2024-08-29 11:02:54 :: administrator -> simone :: 2024 |
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3. Content and structure | |
Is the master or a copy? | is the master |
Content Stage | completed |
Transferable | 1 |
Content Type | External Contribution |
Version Type | publisher |
Abstract | Dissolved organic matter (DOM) is a component of the ocean biological pump, containing fractions of dissolved organic carbon (DOC), nitrogen (DON), and other biologically relevant elements. The role of DOM in marine systems is important for linking the carbon and nutrient cycles. Here we evaluate the seasonal DOC and DON distributions and the DOC/DON ratio in the upper 300 m of the Atlantic sector of the Southern Ocean between 2004 and 2022. We used the dataset collected aboard the RV Polarstern on cruises under umbrella of the Alfred Wegener Institute, Germany, during austral summer 2012, winter/early spring 2013 and spring 2022 as well as datasets from international repositories collected in the spring 2004 and summers 2005, 2010 and 2014. DOC and total dissolved nitrogen (TDN) were analyzed with a TOC-L® Series Shimadzu. DON was calculated by subtracting TDN and dissolved inorganic nitrogen concentrations. The austral spring presented the highest median concentrations of DOC and DON respectively, 49.8 µmol kg1 and 5.1 µmol kg1 and the lowest DOC/DON ratio (11.2). The DOC, DON and the DOC/DON ratio in spring were also statistically different from median results in winter (45.2 µmol kg1 , 3.4 µmol kg1 and 14.3) and summer (45.8 µmol kg1 , 3.6 µmol kg1 and 13.1). However, there were no differences between winter and summer conditions. The highest DOC and DON concentrations confirmed that spring is important for the DOM production and accumulation in the euphotic zone, due to the availability of light and nutrients for phytoplankton. We also corroborate studies in other sectors of the Southern Ocean showing that DOM deviates from the Redfield C/N ratio for plankton production (6.6). However, the release of nitrogen-rich organic matter by zooplankton may contribute to the DOC/DON ratio decrease in spring. |
Area | CST |
Arrangement | urlib.net > BDMCI > Fonds > Produēćo a partir de 2021 > CGCT > Increased spring dissolved... |
doc Directory Content | there are no files |
source Directory Content | there are no files |
agreement Directory Content | |
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4. Conditions of access and use | |
User Group | simone |
Visibility | shown |
Update Permission | not transferred |
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5. Allied materials | |
Mirror Repository | urlib.net/www/2021/06.04.03.40.25 |
Next Higher Units | 8JMKD3MGPCW/46KUATE |
Host Collection | urlib.net/www/2021/06.04.03.40 |
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6. Notes | |
Empty Fields | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor electronicmailaddress format isbn issn keywords label language lineage mark nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark tertiarytype type url volume |
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7. Description control | |
e-Mail (login) | simone |
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