(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III
The High Nutrient Low Chlorophyll (HNLC) Southern Ocean plays a key role in regulating the biological pump and the global carbon cycle. Here we examine the efficacy of stable cadmium (Cd) isotope fractionation for detecting differences in biological productivity between regions. Our results show str...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.805890 2024-09-15T17:48:03+00:00 (Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III Abouchami, Wafa Galer, Stephen J G de Baar, Hein J W Alderkamp, Anne-Carlijn Middag, Rob Laan, Patrick Feldmann, H Andreae, Meinrat O MEDIAN LATITUDE: -54.768647 * MEDIAN LONGITUDE: 0.875278 * SOUTH-BOUND LATITUDE: -67.000700 * WEST-BOUND LONGITUDE: -1.399400 * NORTH-BOUND LATITUDE: -42.338900 * EAST-BOUND LONGITUDE: 8.993400 * DATE/TIME START: 2008-02-13T17:17:00 * DATE/TIME END: 2008-03-09T15:25:00 * MINIMUM DEPTH, water: 3.5 m * MAXIMUM DEPTH, water: 24.8 m 2011 text/tab-separated-values, 412 data points https://doi.pangaea.de/10.1594/PANGAEA.805890 https://doi.org/10.1594/PANGAEA.805890 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.805890 https://doi.org/10.1594/PANGAEA.805890 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Abouchami, Wafa; Galer, Stephen J G; de Baar, Hein J W; Alderkamp, Anne-Carlijn; Middag, Rob; Laan, Patrick; Feldmann, H; Andreae, Meinrat O (2011): Modulation of the Southern Ocean cadmium isotope signature by ocean circulation and primary productivity. Earth and Planetary Science Letters, 305(1-2), 83-91, https://doi.org/10.1016/j.epsl.2011.02.044 ANT-XXIV/3 Area/locality Cadmium Cadmium-110/Cadmium-112 error Cadmium-110/Cadmium-112 ratio CTD/Rosette ultra clean CTD-RO CTD-UC Depth bottom/max top/min water Elevation of event Event label IFISH International Polar Year (2007-2008) IPY Iron fish Latitude of event Longitude of event Method comment Nitrate Nitrite Nitrogen oxide Phosphate Polarstern PS71 PS71/101-2 PS71/103-1 PS71/104-2 PS71/105-1 PS71/107-2 PS71/109-1 PS71/111-1 PS71/113-1 PS71/114-1 PS71/117-1 PS71/120-1 PS71/123-1 PS71/126-1 PS71/129-1 PS71/133-1 PS71/136-1 PS71/138-1 PS71/139-1 dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.80589010.1016/j.epsl.2011.02.044 2024-07-24T02:31:32Z The High Nutrient Low Chlorophyll (HNLC) Southern Ocean plays a key role in regulating the biological pump and the global carbon cycle. Here we examine the efficacy of stable cadmium (Cd) isotope fractionation for detecting differences in biological productivity between regions. Our results show strong meridional Cd isotope and concentration gradients modulated by the Antarctic Fronts, with a clear biogeochemical divide located near 56°S. The coincidence of the Cd isotope divide with the Southern Boundary of the Antarctic Circumpolar Current (ACC),together with evidence for northward advection of the Cd signal in the ACC, demonstrate that Cd isotopes trace surface ocean circulation regimes. The relationships between Cd isotope ratios and concentrations display two negative correlations, separating the ACC and Weddell Gyre into two distinct Cd isoscapes. These arrays are consistent with Rayleigh fractionation and imply a doubling of the isotope effect due to biological consumption of Cd during water transport from the Weddell Gyre into the ACC. The increase in magnitude of Cd isotope fractionation can be accounted for by differences in the phytoplankton biomass, community composition, and their physiological uptake mechanisms in the Weddell Gyre and ACC, thus linking Cd isotope fractionation to primary production and the global carbon cycle. Dataset Antarc* Antarctic International Polar Year IPY Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-1.399400,8.993400,-42.338900,-67.000700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ANT-XXIV/3 Area/locality Cadmium Cadmium-110/Cadmium-112 error Cadmium-110/Cadmium-112 ratio CTD/Rosette ultra clean CTD-RO CTD-UC Depth bottom/max top/min water Elevation of event Event label IFISH International Polar Year (2007-2008) IPY Iron fish Latitude of event Longitude of event Method comment Nitrate Nitrite Nitrogen oxide Phosphate Polarstern PS71 PS71/101-2 PS71/103-1 PS71/104-2 PS71/105-1 PS71/107-2 PS71/109-1 PS71/111-1 PS71/113-1 PS71/114-1 PS71/117-1 PS71/120-1 PS71/123-1 PS71/126-1 PS71/129-1 PS71/133-1 PS71/136-1 PS71/138-1 PS71/139-1 |
spellingShingle |
ANT-XXIV/3 Area/locality Cadmium Cadmium-110/Cadmium-112 error Cadmium-110/Cadmium-112 ratio CTD/Rosette ultra clean CTD-RO CTD-UC Depth bottom/max top/min water Elevation of event Event label IFISH International Polar Year (2007-2008) IPY Iron fish Latitude of event Longitude of event Method comment Nitrate Nitrite Nitrogen oxide Phosphate Polarstern PS71 PS71/101-2 PS71/103-1 PS71/104-2 PS71/105-1 PS71/107-2 PS71/109-1 PS71/111-1 PS71/113-1 PS71/114-1 PS71/117-1 PS71/120-1 PS71/123-1 PS71/126-1 PS71/129-1 PS71/133-1 PS71/136-1 PS71/138-1 PS71/139-1 Abouchami, Wafa Galer, Stephen J G de Baar, Hein J W Alderkamp, Anne-Carlijn Middag, Rob Laan, Patrick Feldmann, H Andreae, Meinrat O (Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III |
topic_facet |
ANT-XXIV/3 Area/locality Cadmium Cadmium-110/Cadmium-112 error Cadmium-110/Cadmium-112 ratio CTD/Rosette ultra clean CTD-RO CTD-UC Depth bottom/max top/min water Elevation of event Event label IFISH International Polar Year (2007-2008) IPY Iron fish Latitude of event Longitude of event Method comment Nitrate Nitrite Nitrogen oxide Phosphate Polarstern PS71 PS71/101-2 PS71/103-1 PS71/104-2 PS71/105-1 PS71/107-2 PS71/109-1 PS71/111-1 PS71/113-1 PS71/114-1 PS71/117-1 PS71/120-1 PS71/123-1 PS71/126-1 PS71/129-1 PS71/133-1 PS71/136-1 PS71/138-1 PS71/139-1 |
description |
The High Nutrient Low Chlorophyll (HNLC) Southern Ocean plays a key role in regulating the biological pump and the global carbon cycle. Here we examine the efficacy of stable cadmium (Cd) isotope fractionation for detecting differences in biological productivity between regions. Our results show strong meridional Cd isotope and concentration gradients modulated by the Antarctic Fronts, with a clear biogeochemical divide located near 56°S. The coincidence of the Cd isotope divide with the Southern Boundary of the Antarctic Circumpolar Current (ACC),together with evidence for northward advection of the Cd signal in the ACC, demonstrate that Cd isotopes trace surface ocean circulation regimes. The relationships between Cd isotope ratios and concentrations display two negative correlations, separating the ACC and Weddell Gyre into two distinct Cd isoscapes. These arrays are consistent with Rayleigh fractionation and imply a doubling of the isotope effect due to biological consumption of Cd during water transport from the Weddell Gyre into the ACC. The increase in magnitude of Cd isotope fractionation can be accounted for by differences in the phytoplankton biomass, community composition, and their physiological uptake mechanisms in the Weddell Gyre and ACC, thus linking Cd isotope fractionation to primary production and the global carbon cycle. |
format |
Dataset |
author |
Abouchami, Wafa Galer, Stephen J G de Baar, Hein J W Alderkamp, Anne-Carlijn Middag, Rob Laan, Patrick Feldmann, H Andreae, Meinrat O |
author_facet |
Abouchami, Wafa Galer, Stephen J G de Baar, Hein J W Alderkamp, Anne-Carlijn Middag, Rob Laan, Patrick Feldmann, H Andreae, Meinrat O |
author_sort |
Abouchami, Wafa |
title |
(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III |
title_short |
(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III |
title_full |
(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III |
title_fullStr |
(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III |
title_full_unstemmed |
(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III |
title_sort |
(table 1) cadmium and nutrient concentration of surface waters sampled during polarstern cruise ant-xxiv/iii |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.805890 https://doi.org/10.1594/PANGAEA.805890 |
op_coverage |
MEDIAN LATITUDE: -54.768647 * MEDIAN LONGITUDE: 0.875278 * SOUTH-BOUND LATITUDE: -67.000700 * WEST-BOUND LONGITUDE: -1.399400 * NORTH-BOUND LATITUDE: -42.338900 * EAST-BOUND LONGITUDE: 8.993400 * DATE/TIME START: 2008-02-13T17:17:00 * DATE/TIME END: 2008-03-09T15:25:00 * MINIMUM DEPTH, water: 3.5 m * MAXIMUM DEPTH, water: 24.8 m |
long_lat |
ENVELOPE(-1.399400,8.993400,-42.338900,-67.000700) |
genre |
Antarc* Antarctic International Polar Year IPY Southern Ocean |
genre_facet |
Antarc* Antarctic International Polar Year IPY Southern Ocean |
op_source |
Supplement to: Abouchami, Wafa; Galer, Stephen J G; de Baar, Hein J W; Alderkamp, Anne-Carlijn; Middag, Rob; Laan, Patrick; Feldmann, H; Andreae, Meinrat O (2011): Modulation of the Southern Ocean cadmium isotope signature by ocean circulation and primary productivity. Earth and Planetary Science Letters, 305(1-2), 83-91, https://doi.org/10.1016/j.epsl.2011.02.044 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.805890 https://doi.org/10.1594/PANGAEA.805890 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.80589010.1016/j.epsl.2011.02.044 |
_version_ |
1810288853708177408 |