Natural copper-binding ligands in the Arctic Ocean. The influence of the Transpolar Drift (GEOTRACES GN04)
The Arctic Ocean is a unique biogeochemical environment characterized by low salinity surface waters, extensive sea-ice coverage, high riverine inputs, large shelf extension and the long residence time of deep waters. These characteristics determine the distribution of dissolved bio-essential trace...
Published in: | Frontiers in Marine Science |
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2023
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Online Access: | http://hdl.handle.net/10553/128257 https://doi.org/10.3389/fmars.2023.1306278 |
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ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/128257 2024-02-04T09:52:44+01:00 Natural copper-binding ligands in the Arctic Ocean. The influence of the Transpolar Drift (GEOTRACES GN04) Arnone, Veronica Santana Casiano, Juana Magdalena González Dávila, Melchor Planquette, Hélène Sarthou, Géraldine Gerringa, Loes J.A. González González, Aridane NO DATA 57195278718 57265678700 6603931257 22836555200 6603306739 34770314700 37031064100 BU-BAS 2023 http://hdl.handle.net/10553/128257 https://doi.org/10.3389/fmars.2023.1306278 eng eng Efecto de la Acidificacion Oceanica, la Temperaturay El Contenido de Materia Organica en la Persistencia de Fe(Ii) en El Oceano Atlantico Frontiers in Marine Science 10 2296-7745 Scopus http://hdl.handle.net/10553/128257 doi:10.3389/fmars.2023.1306278 85180692510 Sí Frontiers in Marine Science [ISSN 2296-7745],v. 10, (Enero 2023) 251002 Oceanografía química Arctic Ocean Copper Copper-Binding Ligands Transpolar Drift Voltammetric Method info:eu-repo/semantics/Article Article 2023 ftunivlaspalmas https://doi.org/10.3389/fmars.2023.1306278 2024-01-10T00:15:41Z The Arctic Ocean is a unique biogeochemical environment characterized by low salinity surface waters, extensive sea-ice coverage, high riverine inputs, large shelf extension and the long residence time of deep waters. These characteristics determine the distribution of dissolved bio-essential trace metals, such as copper (Cu), and the dissolved organic-binding ligands capable of complexing it. This work reports the concentrations and conditional stability constants of dissolved Cu-binding ligands (LCu and log KcondCu2+L) measured in samples from the Polarstern (PS94) expedition, as part of the international GEOTRACES program (cruise GN04). Full-depth profile stations from the Barents Sea, Nansen Basin, Amundsen Basin and Makarov Basin were analysed by competitive ligand exchange-adsorptive cathodic stripping voltammetry (CLE-AdCSV). The basins and water masses presented a wide range of LCu concentrations (range: 1.40 – 7.91 nM) and log KcondCu2+L values (range: 13.83 – 16.01). The highest variability of Cu-binding ligand concentrations was observed in surface waters (≤200 m), and mean concentrations increased from the Barents Sea and Nansen Basin (2.15 ± 0.31 nM and 1.93 ± 0.35 nM, respectively) to the Amundsen (3.84 ± 1.69 nM) and Makarov Basins (4.40± 2.03 nM). The influence of the Transpolar Drift (TDP) flow path was observed in the Amundsen and Makarov Basins, especially on Cu-binding ligand concentrations (LCu range: 3.96 – 7.91 nM). In contrast, deep waters (>200 m) showed no significant differences between basins and water masses in terms of LCu concentrations (range: 1.45 – 2.78 nM) and log KcondCu2+L (range: 14.02 – 15.46). The presence of strong Cu-binding ligands (log KcondCu2+L>13) in surface waters stabilises the excess of dissolved copper (dCu) transported in the TPD and favours its export to the Fram Strait and Nordic Seas. 20 1,355 5,247 Q1 Q1 SCIE 10,3 Article in Journal/Newspaper amundsen basin Arctic Arctic Ocean Barents Sea Fram Strait makarov basin Nansen Basin Nordic Seas Sea ice Universidad de Las Palmas de Gran Canaria: Acceda Arctic Arctic Ocean Barents Sea Makarov Basin ENVELOPE(170.000,170.000,87.000,87.000) Amundsen Basin ENVELOPE(74.000,74.000,87.000,87.000) Frontiers in Marine Science 10 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
251002 Oceanografía química Arctic Ocean Copper Copper-Binding Ligands Transpolar Drift Voltammetric Method |
spellingShingle |
251002 Oceanografía química Arctic Ocean Copper Copper-Binding Ligands Transpolar Drift Voltammetric Method Arnone, Veronica Santana Casiano, Juana Magdalena González Dávila, Melchor Planquette, Hélène Sarthou, Géraldine Gerringa, Loes J.A. González González, Aridane Natural copper-binding ligands in the Arctic Ocean. The influence of the Transpolar Drift (GEOTRACES GN04) |
topic_facet |
251002 Oceanografía química Arctic Ocean Copper Copper-Binding Ligands Transpolar Drift Voltammetric Method |
description |
The Arctic Ocean is a unique biogeochemical environment characterized by low salinity surface waters, extensive sea-ice coverage, high riverine inputs, large shelf extension and the long residence time of deep waters. These characteristics determine the distribution of dissolved bio-essential trace metals, such as copper (Cu), and the dissolved organic-binding ligands capable of complexing it. This work reports the concentrations and conditional stability constants of dissolved Cu-binding ligands (LCu and log KcondCu2+L) measured in samples from the Polarstern (PS94) expedition, as part of the international GEOTRACES program (cruise GN04). Full-depth profile stations from the Barents Sea, Nansen Basin, Amundsen Basin and Makarov Basin were analysed by competitive ligand exchange-adsorptive cathodic stripping voltammetry (CLE-AdCSV). The basins and water masses presented a wide range of LCu concentrations (range: 1.40 – 7.91 nM) and log KcondCu2+L values (range: 13.83 – 16.01). The highest variability of Cu-binding ligand concentrations was observed in surface waters (≤200 m), and mean concentrations increased from the Barents Sea and Nansen Basin (2.15 ± 0.31 nM and 1.93 ± 0.35 nM, respectively) to the Amundsen (3.84 ± 1.69 nM) and Makarov Basins (4.40± 2.03 nM). The influence of the Transpolar Drift (TDP) flow path was observed in the Amundsen and Makarov Basins, especially on Cu-binding ligand concentrations (LCu range: 3.96 – 7.91 nM). In contrast, deep waters (>200 m) showed no significant differences between basins and water masses in terms of LCu concentrations (range: 1.45 – 2.78 nM) and log KcondCu2+L (range: 14.02 – 15.46). The presence of strong Cu-binding ligands (log KcondCu2+L>13) in surface waters stabilises the excess of dissolved copper (dCu) transported in the TPD and favours its export to the Fram Strait and Nordic Seas. 20 1,355 5,247 Q1 Q1 SCIE 10,3 |
author2 |
NO DATA 57195278718 57265678700 6603931257 22836555200 6603306739 34770314700 37031064100 BU-BAS |
format |
Article in Journal/Newspaper |
author |
Arnone, Veronica Santana Casiano, Juana Magdalena González Dávila, Melchor Planquette, Hélène Sarthou, Géraldine Gerringa, Loes J.A. González González, Aridane |
author_facet |
Arnone, Veronica Santana Casiano, Juana Magdalena González Dávila, Melchor Planquette, Hélène Sarthou, Géraldine Gerringa, Loes J.A. González González, Aridane |
author_sort |
Arnone, Veronica |
title |
Natural copper-binding ligands in the Arctic Ocean. The influence of the Transpolar Drift (GEOTRACES GN04) |
title_short |
Natural copper-binding ligands in the Arctic Ocean. The influence of the Transpolar Drift (GEOTRACES GN04) |
title_full |
Natural copper-binding ligands in the Arctic Ocean. The influence of the Transpolar Drift (GEOTRACES GN04) |
title_fullStr |
Natural copper-binding ligands in the Arctic Ocean. The influence of the Transpolar Drift (GEOTRACES GN04) |
title_full_unstemmed |
Natural copper-binding ligands in the Arctic Ocean. The influence of the Transpolar Drift (GEOTRACES GN04) |
title_sort |
natural copper-binding ligands in the arctic ocean. the influence of the transpolar drift (geotraces gn04) |
publishDate |
2023 |
url |
http://hdl.handle.net/10553/128257 https://doi.org/10.3389/fmars.2023.1306278 |
long_lat |
ENVELOPE(170.000,170.000,87.000,87.000) ENVELOPE(74.000,74.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Barents Sea Makarov Basin Amundsen Basin |
geographic_facet |
Arctic Arctic Ocean Barents Sea Makarov Basin Amundsen Basin |
genre |
amundsen basin Arctic Arctic Ocean Barents Sea Fram Strait makarov basin Nansen Basin Nordic Seas Sea ice |
genre_facet |
amundsen basin Arctic Arctic Ocean Barents Sea Fram Strait makarov basin Nansen Basin Nordic Seas Sea ice |
op_source |
Frontiers in Marine Science [ISSN 2296-7745],v. 10, (Enero 2023) |
op_relation |
Efecto de la Acidificacion Oceanica, la Temperaturay El Contenido de Materia Organica en la Persistencia de Fe(Ii) en El Oceano Atlantico Frontiers in Marine Science 10 2296-7745 Scopus http://hdl.handle.net/10553/128257 doi:10.3389/fmars.2023.1306278 85180692510 Sí |
op_doi |
https://doi.org/10.3389/fmars.2023.1306278 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
_version_ |
1789960735858622464 |