(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III, 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
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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ftdatacite:10.1594/pangaea.805890 2023-05-15T13:56:05+02:00 (Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III, 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 Abouchami, Wafa Galer, Stephen J G de Baar, Hein J W Alderkamp, Anne-Carlijn Middag, Rob Laan, Patrick Feldmann, H Andreae, Meinrat O 2011 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.805890 https://doi.pangaea.de/10.1594/PANGAEA.805890 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.epsl.2011.02.044 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Event label Latitude of event Longitude of event Elevation of event Area/locality Method comment DEPTH, water Depth, top/min Depth, bottom/max Salinity Temperature, water Phosphate Silicon Nitrogen oxide Nitrite Nitrate Cadmium Cadmium-110/Cadmium-112 ratio Cadmium-110/Cadmium-112, error Ratio Standard deviation CTD/Rosette, ultra clean Iron fish CTD/Rosette Thermal Ionization Mass Spectrometry TIMS ANT-XXIV/3 Polarstern International Polar Year 2007-2008 IPY Supplementary Dataset dataset Dataset 2011 ftdatacite https://doi.org/10.1594/pangaea.805890 https://doi.org/10.1016/j.epsl.2011.02.044 2021-11-05T12:55:41Z 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. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 Dataset Antarc* Antarctic International Polar Year IPY Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean The Antarctic Weddell |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Event label Latitude of event Longitude of event Elevation of event Area/locality Method comment DEPTH, water Depth, top/min Depth, bottom/max Salinity Temperature, water Phosphate Silicon Nitrogen oxide Nitrite Nitrate Cadmium Cadmium-110/Cadmium-112 ratio Cadmium-110/Cadmium-112, error Ratio Standard deviation CTD/Rosette, ultra clean Iron fish CTD/Rosette Thermal Ionization Mass Spectrometry TIMS ANT-XXIV/3 Polarstern International Polar Year 2007-2008 IPY |
spellingShingle |
Event label Latitude of event Longitude of event Elevation of event Area/locality Method comment DEPTH, water Depth, top/min Depth, bottom/max Salinity Temperature, water Phosphate Silicon Nitrogen oxide Nitrite Nitrate Cadmium Cadmium-110/Cadmium-112 ratio Cadmium-110/Cadmium-112, error Ratio Standard deviation CTD/Rosette, ultra clean Iron fish CTD/Rosette Thermal Ionization Mass Spectrometry TIMS ANT-XXIV/3 Polarstern International Polar Year 2007-2008 IPY 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, 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 |
topic_facet |
Event label Latitude of event Longitude of event Elevation of event Area/locality Method comment DEPTH, water Depth, top/min Depth, bottom/max Salinity Temperature, water Phosphate Silicon Nitrogen oxide Nitrite Nitrate Cadmium Cadmium-110/Cadmium-112 ratio Cadmium-110/Cadmium-112, error Ratio Standard deviation CTD/Rosette, ultra clean Iron fish CTD/Rosette Thermal Ionization Mass Spectrometry TIMS ANT-XXIV/3 Polarstern International Polar Year 2007-2008 IPY |
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. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 |
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, 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 |
title_short |
(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III, 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 |
title_full |
(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III, 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 |
title_fullStr |
(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III, 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 |
title_full_unstemmed |
(Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III, 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 |
title_sort |
(table 1) cadmium and nutrient concentration of surface waters sampled during polarstern cruise ant-xxiv/iii, 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 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2011 |
url |
https://dx.doi.org/10.1594/pangaea.805890 https://doi.pangaea.de/10.1594/PANGAEA.805890 |
geographic |
Antarctic Southern Ocean The Antarctic Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell |
genre |
Antarc* Antarctic International Polar Year IPY Southern Ocean |
genre_facet |
Antarc* Antarctic International Polar Year IPY Southern Ocean |
op_relation |
https://dx.doi.org/10.1016/j.epsl.2011.02.044 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.805890 https://doi.org/10.1016/j.epsl.2011.02.044 |
_version_ |
1766263313422876672 |