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  "author": null,
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  "author": null,
            
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  "code": "7b.b.5",
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  "code": "7b.b.5",
            
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  "contributor": "NIOZ Royal Netherlands Institute for Sea Research",
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  "contributor": "NIOZ Royal Netherlands Institute for Sea Research",
            
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  "creator_user_id": "d4bbf1d4-da30-4dd9-8488-efed6f61732f",
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  "creator_user_id": "d4bbf1d4-da30-4dd9-8488-efed6f61732f",
            
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  "creators": 
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  "creators": 
            
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tname\":\"Indah\",\"lastname\":\"Ardiningsih\",\"affiliation\":\"Royal 
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tname\":\"Indah\",\"lastname\":\"Ardiningsih\",\"affiliation\":\"Royal 
            
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Netherlands Institute for Sea 
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Netherlands Institute for Sea 
            
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gsih@nioz.nl\",\"iscorrespondingauthor\":true},{\"firstname\":\"Sylvia  
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gsih@nioz.nl\",\"iscorrespondingauthor\":true},{\"firstname\":\"Sylvia  
            
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\",\"lastname\":\"Sander \",\"affiliation\":\"International Atomic 
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\",\"lastname\":\"Sander \",\"affiliation\":\"International Atomic 
            
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Energy 
12
Energy 
            
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ame\":\"Claudine\",\"lastname\":\"Strirling\",\"affiliation\":\"Centre 
13
ame\":\"Claudine\",\"lastname\":\"Strirling\",\"affiliation\":\"Centre 
            
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for Trace Element Analysis and Chemistry Department, University of 
14
for Trace Element Analysis and Chemistry Department, University of 
            
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ress\":\"\",\"iscorrespondingauthor\":false},{\"firstname\":\"Gert-Jan 
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ress\":\"\",\"iscorrespondingauthor\":false},{\"firstname\":\"Gert-Jan 
            
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\",\"lastname\":\"Reichart\",\"affiliation\":\"Royal Netherlands 
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\",\"lastname\":\"Reichart\",\"affiliation\":\"Royal Netherlands 
            
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Institute for Sea Research, University of 
17
Institute for Sea Research, University of 
            
18
tname\":\"Kevin\",\"lastname\":\"Arrigo\",\"affiliation\":\"Department 
18
tname\":\"Kevin\",\"lastname\":\"Arrigo\",\"affiliation\":\"Department 
            
19
of Earth System Science, Stanford University, 
19
of Earth System Science, Stanford University, 
            
20
firstname\":\"Loes\",\"lastname\":\"Gerringa\",\"affiliation\":\"Royal 
20
firstname\":\"Loes\",\"lastname\":\"Gerringa\",\"affiliation\":\"Royal 
            
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Netherlands Institute for Sea 
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Netherlands Institute for Sea 
            
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{\"firstname\":\"Rob\",\"lastname\":\"Middag\",\"affiliation\":\"Royal 
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{\"firstname\":\"Rob\",\"lastname\":\"Middag\",\"affiliation\":\"Royal 
            
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Netherlands Institute for Sea 
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Netherlands Institute for Sea 
            
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address\":\"\",\"iscorrespondingauthor\":false},{\"firstname\":\"Kyyas 
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address\":\"\",\"iscorrespondingauthor\":false},{\"firstname\":\"Kyyas 
            
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\",\"lastname\":\"Seyitmuhammedov\",\"affiliation\":\"University of 
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\",\"lastname\":\"Seyitmuhammedov\",\"affiliation\":\"University of 
            
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:\"\",\"contactemailaddress\":\"\",\"iscorrespondingauthor\":false}]",
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:\"\",\"contactemailaddress\":\"\",\"iscorrespondingauthor\":false}]",
            
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  "dataset_persistent_id": "DOI:10.25850/nioz/7b.b.5",
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  "dataset_persistent_id": "DOI:10.25850/nioz/7b.b.5",
            
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  "dates": 
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  "dates": 
            
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-11-20T23:00:00.000Z\",\"type\":\"collected\",\"information\":\"\"}]",
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-11-20T23:00:00.000Z\",\"type\":\"collected\",\"information\":\"\"}]",
            
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  "deposit_date": "2020-08-17",
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  "deposit_date": "2020-08-17",
            
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  "depositor": "Indah Ardiningsih",
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  "depositor": "Indah Ardiningsih",
            
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  "distribution_date": "2020-08-17",
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  "distribution_date": "2020-08-17",
            
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  "distributor": "Research Data Management(NIOZ Royal Netherlands 
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  "distributor": "Research Data Management(NIOZ Royal Netherlands 
            
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Institute for Sea Research)",
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Institute for Sea Research)",
            
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  "doi_date_published": "2020-11-24",
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  "doi_date_published": "2020-11-24",
            
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  "funding_references": "[{\"name\":\"Indonesia Endowment Fund for 
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  "funding_references": "[{\"name\":\"Indonesia Endowment Fund for 
            
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Education (LPDP)\",\"awardnumber\":\"\",\"awardtitle\":\"doctoral 
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Education (LPDP)\",\"awardnumber\":\"\",\"awardtitle\":\"doctoral 
            
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scholarship awarded to Indah Ardiningsih\"},{\"name\":\"The National 
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scholarship awarded to Indah Ardiningsih\"},{\"name\":\"The National 
            
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Science Foundation Office of Polar Programs 
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Science Foundation Office of Polar Programs 
            
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\",\"awardnumber\":\"ANT-1063592\",\"awardtitle\":\"Kevin R. 
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\",\"awardnumber\":\"ANT-1063592\",\"awardtitle\":\"Kevin R. 
            
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Arrigo\"},{\"name\":\"University of Otago Posgraduate 
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Arrigo\"},{\"name\":\"University of Otago Posgraduate 
            
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Scholarship\",\"awardnumber\":\"\",\"awardtitle\":\"awarded to Kyyas 
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Scholarship\",\"awardnumber\":\"\",\"awardtitle\":\"awarded to Kyyas 
            
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Seyitmuhammedov\"}]",
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Seyitmuhammedov\"}]",
            
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  "geographic_coverage": "[{\"place\":\"Bellingshausen 
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  "geographic_coverage": "[{\"place\":\"Bellingshausen 
            
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1\":-55,\"longitude_1\":-60,\"latitude_2\":-75,\"longitude_2\":-68}]",
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1\":-55,\"longitude_1\":-60,\"latitude_2\":-75,\"longitude_2\":-68}]",
            
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  "metadata_modified": "2024-10-22T13:50:56.470501",
            
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  "name": "7bb5",
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  "name": "7bb5",
            
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  "notes": "Organic ligands are a key factor determining availability 
55
  "notes": "Organic ligands are a key factor determining availability 
            
56
of dissolved-Fe (DFe) in the high nutrient low chlorophyll (HNLC) 
56
of dissolved-Fe (DFe) in the high nutrient low chlorophyll (HNLC) 
            
57
areas of the Southern Ocean. In this study, organic speciation of Fe 
57
areas of the Southern Ocean. In this study, organic speciation of Fe 
            
58
is investigated along a natural gradient of the western Antarctic 
58
is investigated along a natural gradient of the western Antarctic 
            
59
Peninsula, from an ice covered shelf to the open ocean. An 
59
Peninsula, from an ice covered shelf to the open ocean. An 
            
60
electrochemical approach, competitive ligand exchange - adsorptive 
60
electrochemical approach, competitive ligand exchange - adsorptive 
            
61
cathodic stripping voltammetry (CLE-AdCSV) was applied. Our results 
61
cathodic stripping voltammetry (CLE-AdCSV) was applied. Our results 
            
62
indicated that organic ligands in surface water on the shelf are 
62
indicated that organic ligands in surface water on the shelf are 
            
63
associated with ice-algal exudates, possibly combined with melting of 
63
associated with ice-algal exudates, possibly combined with melting of 
            
64
sea-ice. Organic ligands in deeper shelf water are supplied via 
64
sea-ice. Organic ligands in deeper shelf water are supplied via 
            
65
resuspension of slope or shelf sediments. Further offshore, organic 
65
resuspension of slope or shelf sediments. Further offshore, organic 
            
66
ligands are most likely related to the development of phytoplankton 
66
ligands are most likely related to the development of phytoplankton 
            
67
blooms in open ocean waters. On the shelf, total ligand concentrations 
67
blooms in open ocean waters. On the shelf, total ligand concentrations 
            
68
([Lt]) were between 1.2 nM eq. Fe and 6.4 nM eq. Fe. The organic 
68
([Lt]) were between 1.2 nM eq. Fe and 6.4 nM eq. Fe. The organic 
            
69
ligands offshore ranged between 1.0 and 3.0 nM eq. Fe. The southern 
69
ligands offshore ranged between 1.0 and 3.0 nM eq. Fe. The southern 
            
70
boundary of the Antarctic Circumpolar Current (SB ACC) separated the 
70
boundary of the Antarctic Circumpolar Current (SB ACC) separated the 
            
71
organic ligands on the shelf from bloom-associated ligands offshore. 
71
organic ligands on the shelf from bloom-associated ligands offshore. 
            
72
Overall, organic ligand concentrations always exceeded DFe 
72
Overall, organic ligand concentrations always exceeded DFe 
            
73
concentration (excess ligand concentration, [L??] = 0.8 - 5.0 nM eq. 
73
concentration (excess ligand concentration, [L??] = 0.8 - 5.0 nM eq. 
            
74
Fe). The [L??] made up to 80% of [Lt], suggesting that any additional 
74
Fe). The [L??] made up to 80% of [Lt], suggesting that any additional 
            
75
Fe input can be stabilized in the dissolved form via organic 
75
Fe input can be stabilized in the dissolved form via organic 
            
76
complexation. The denser modified Circumpolar Deep Water (mCDW) on the 
76
complexation. The denser modified Circumpolar Deep Water (mCDW) on the 
            
77
shelf showed the highest complexation capacity of Fe (??Fe??L ; the 
77
shelf showed the highest complexation capacity of Fe (??Fe??L ; the 
            
78
product of [L??] and binding strength of ligands, K??Fe??L). Since Fe 
78
product of [L??] and binding strength of ligands, K??Fe??L). Since Fe 
            
79
is also supplied by shelf sediments and glacial discharge, the high 
79
is also supplied by shelf sediments and glacial discharge, the high 
            
80
complexation capacity over the shelf can keep Fe dissolved and 
80
complexation capacity over the shelf can keep Fe dissolved and 
            
81
available for local primary productivity later in the season upon sea 
81
available for local primary productivity later in the season upon sea 
            
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ice melting.",
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ice melting.",
            
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  "state": "active",
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  "state": "active",
            
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  "subject": "Earth and Environmental Sciences",
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  "subject": "Earth and Environmental Sciences",
            
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  "tags": [
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  "tags": [
            
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    {
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    {
            
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      "display_name": "Bellingshausen Sea",
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      "display_name": "Bellingshausen Sea",
            
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      "id": "2c6830ab-4d54-4727-a1bd-41ededb2f0dc",
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      "display_name": "Fe-binding ligands",
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      "display_name": "Fe-binding ligands",
            
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      "id": "075d80c1-392a-4b5f-9f1f-70e7f6350ed9",
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      "display_name": "Iron Organic ligands",
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      "display_name": "Iron Organic ligands",
            
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      "id": "c90a3da0-a08b-4867-b482-d0af0b511a71",
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      "id": "c90a3da0-a08b-4867-b482-d0af0b511a71",
            
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      "name": "Iron Organic ligands",
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    {
            
174
      "display_name": "Southern Ocean",
174
      "display_name": "Southern Ocean",
            
175
      "id": "339dc59d-5add-42c3-b19c-dd4115de7859",
175
      "id": "339dc59d-5add-42c3-b19c-dd4115de7859",
            
176
      "name": "Southern Ocean",
176
      "name": "Southern Ocean",
            
177
      "state": "active",
177
      "state": "active",
            
178
      "vocabulary_id": null
178
      "vocabulary_id": null
            
179
    }
179
    }
            
180
  ],
180
  ],
            
n
181
  "title": "Sources of Fe-binding organic ligands in surface waters of 
n
181
  "title": "Fe-binding organic ligands in surface waters of the 
            
182
the western Antarctic Peninsula",
182
western Antarctic Peninsula",
            
183
  "type": "dataset",
183
  "type": "dataset",
            
184
  "url": "https://dataportal.nioz.nl/doi/10.25850/nioz/7b.b.5",
184
  "url": "https://dataportal.nioz.nl/doi/10.25850/nioz/7b.b.5",
            
t
185
  "version": "2"
t
185
  "version": "3"
            
186
}
186
}