Dissolved zinc in the subarctic North Pacific and Bering Sea : its distribution, speciation, and importance to primary producers
Author Posting. © American Geophysical Union, 2012. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 26 (2012): GB2015, doi:10.1029/2010GB004004. The eastern subarcti...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/5211 2023-05-15T15:43:25+02:00 Dissolved zinc in the subarctic North Pacific and Bering Sea : its distribution, speciation, and importance to primary producers Jakuba, Rachel W. Saito, Mak A. Moffett, James W. Xu, Yan 2012-05-12 application/pdf https://hdl.handle.net/1912/5211 en_US eng American Geophysical Union https://doi.org/10.1029/2010GB004004 Global Biogeochemical Cycles 26 (2012): GB2015 https://hdl.handle.net/1912/5211 doi:10.1029/2010GB004004 Global Biogeochemical Cycles 26 (2012): GB2015 doi:10.1029/2010GB004004 North Pacific Diatoms Speciation Zinc Article 2012 ftwhoas https://doi.org/10.1029/2010GB004004 2022-05-28T22:58:36Z Author Posting. © American Geophysical Union, 2012. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 26 (2012): GB2015, doi:10.1029/2010GB004004. The eastern subarctic North Pacific, an area of high nutrients and low chlorophyll, has been studied with respect to the potential for iron to control primary production. The geochemistry of zinc, a critical micronutrient for diatoms, is less well characterized. Total zinc concentrations and zinc speciation were measured in near-surface waters on transects across the subarctic North Pacific and across the Bering Sea. Total dissolved zinc concentrations in the near-surface ranged from 0.10 nmol L−1 to 1.15 nmol L−1 with lowest concentrations in the eastern portions of both the North Pacific and Bering Sea. Dissolved zinc speciation was dominated by complexation to strong organic ligands whose concentration ranged from 1.1 to 3.6 nmol L−1 with conditional stability constants (K′ZnL/Zn′) ranging from 109.3 to 1011.0. The importance of zinc to primary producers was evaluated by comparison to phytoplankton pigment concentrations and by performing a shipboard incubation. Zinc concentrations were positively correlated with two pigments that are characteristic of diatoms. At one station in the North Pacific, the addition of 0.75 nmol L−1 zinc resulted in a doubling of chlorophyll after 4 days. This research was supported by NSF grant OCE-0136835 and by an EPA STAR Fellowship. 2012-11-12 Article in Journal/Newspaper Bering Sea Subarctic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Bering Sea Pacific Global Biogeochemical Cycles 26 2 n/a n/a |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
North Pacific Diatoms Speciation Zinc |
spellingShingle |
North Pacific Diatoms Speciation Zinc Jakuba, Rachel W. Saito, Mak A. Moffett, James W. Xu, Yan Dissolved zinc in the subarctic North Pacific and Bering Sea : its distribution, speciation, and importance to primary producers |
topic_facet |
North Pacific Diatoms Speciation Zinc |
description |
Author Posting. © American Geophysical Union, 2012. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 26 (2012): GB2015, doi:10.1029/2010GB004004. The eastern subarctic North Pacific, an area of high nutrients and low chlorophyll, has been studied with respect to the potential for iron to control primary production. The geochemistry of zinc, a critical micronutrient for diatoms, is less well characterized. Total zinc concentrations and zinc speciation were measured in near-surface waters on transects across the subarctic North Pacific and across the Bering Sea. Total dissolved zinc concentrations in the near-surface ranged from 0.10 nmol L−1 to 1.15 nmol L−1 with lowest concentrations in the eastern portions of both the North Pacific and Bering Sea. Dissolved zinc speciation was dominated by complexation to strong organic ligands whose concentration ranged from 1.1 to 3.6 nmol L−1 with conditional stability constants (K′ZnL/Zn′) ranging from 109.3 to 1011.0. The importance of zinc to primary producers was evaluated by comparison to phytoplankton pigment concentrations and by performing a shipboard incubation. Zinc concentrations were positively correlated with two pigments that are characteristic of diatoms. At one station in the North Pacific, the addition of 0.75 nmol L−1 zinc resulted in a doubling of chlorophyll after 4 days. This research was supported by NSF grant OCE-0136835 and by an EPA STAR Fellowship. 2012-11-12 |
format |
Article in Journal/Newspaper |
author |
Jakuba, Rachel W. Saito, Mak A. Moffett, James W. Xu, Yan |
author_facet |
Jakuba, Rachel W. Saito, Mak A. Moffett, James W. Xu, Yan |
author_sort |
Jakuba, Rachel W. |
title |
Dissolved zinc in the subarctic North Pacific and Bering Sea : its distribution, speciation, and importance to primary producers |
title_short |
Dissolved zinc in the subarctic North Pacific and Bering Sea : its distribution, speciation, and importance to primary producers |
title_full |
Dissolved zinc in the subarctic North Pacific and Bering Sea : its distribution, speciation, and importance to primary producers |
title_fullStr |
Dissolved zinc in the subarctic North Pacific and Bering Sea : its distribution, speciation, and importance to primary producers |
title_full_unstemmed |
Dissolved zinc in the subarctic North Pacific and Bering Sea : its distribution, speciation, and importance to primary producers |
title_sort |
dissolved zinc in the subarctic north pacific and bering sea : its distribution, speciation, and importance to primary producers |
publisher |
American Geophysical Union |
publishDate |
2012 |
url |
https://hdl.handle.net/1912/5211 |
geographic |
Bering Sea Pacific |
geographic_facet |
Bering Sea Pacific |
genre |
Bering Sea Subarctic |
genre_facet |
Bering Sea Subarctic |
op_source |
Global Biogeochemical Cycles 26 (2012): GB2015 doi:10.1029/2010GB004004 |
op_relation |
https://doi.org/10.1029/2010GB004004 Global Biogeochemical Cycles 26 (2012): GB2015 https://hdl.handle.net/1912/5211 doi:10.1029/2010GB004004 |
op_doi |
https://doi.org/10.1029/2010GB004004 |
container_title |
Global Biogeochemical Cycles |
container_volume |
26 |
container_issue |
2 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1766377543749861376 |