Evidence for the linked biogeochemical cycling of zinc, cobalt, and phosphorus in the western North Atlantic Ocean
Author Posting. © American Geophysical Union, 2008. 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 22 (2008): GB4012, doi:10.1029/2007GB003119. Many trace metals su...
Published in: | Global Biogeochemical Cycles |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
2008
|
Subjects: | |
Online Access: | https://hdl.handle.net/1912/3410 |
id |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3410 |
---|---|
record_format |
openpolar |
spelling |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3410 2023-05-15T17:27:50+02:00 Evidence for the linked biogeochemical cycling of zinc, cobalt, and phosphorus in the western North Atlantic Ocean Jakuba, Rachel W. Moffett, James W. Dyhrman, Sonya T. 2008-11-22 application/pdf https://hdl.handle.net/1912/3410 en_US eng American Geophysical Union https://doi.org/10.1029/2007GB003119 Global Biogeochemical Cycles 22 (2008): GB4012 https://hdl.handle.net/1912/3410 doi:10.1029/2007GB003119 Global Biogeochemical Cycles 22 (2008): GB4012 doi:10.1029/2007GB003119 Trace metals Phosphorus Sargasso Sea Article 2008 ftwhoas https://doi.org/10.1029/2007GB003119 2022-05-28T22:57:58Z Author Posting. © American Geophysical Union, 2008. 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 22 (2008): GB4012, doi:10.1029/2007GB003119. Many trace metals such as iron, copper, and manganese have lower concentrations in the surface waters of the North Pacific Ocean than in North Atlantic surface waters. However, cobalt and zinc concentrations in North Atlantic surface waters are often as low as those reported in the North Pacific. We studied the relationship between the distribution of cobalt, zinc, and phosphorus in surface waters of the western North Atlantic Ocean. Both metals show strong depletion in the southern Sargasso Sea, a region characterized by exceedingly low dissolved inorganic phosphorus (generally <4 nmol L−1) and measurable alkaline phosphatase activity. Alkaline phosphatase is a metalloenzyme (typically containing zinc) that cleaves phosphate monoesters and is a diagnostic indicator of phosphorus stress in phytoplankton. In contrast to the North Pacific Ocean, cobalt and zinc appear to be drawn down to their lowest values only when inorganic phosphorus is below 10 nmol L−1 in the North Atlantic Ocean. Lower levels of phosphorus in the Atlantic may contribute to these differences, possibly through an increased biological demand for zinc and cobalt associated with dissolved organic phosphorus acquisition. This hypothesis is consistent with results of a culture study where alkaline phosphatase activity decreased in the model coccolithophore Emiliania huxleyi upon zinc and cobalt limitation. This research was supported by NSF grant OCE- 0136835 to J.W.M. and S.D. R.W.J. was supported by an EPA STAR Fellowship. Article in Journal/Newspaper North Atlantic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Pacific Global Biogeochemical Cycles 22 4 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 |
Trace metals Phosphorus Sargasso Sea |
spellingShingle |
Trace metals Phosphorus Sargasso Sea Jakuba, Rachel W. Moffett, James W. Dyhrman, Sonya T. Evidence for the linked biogeochemical cycling of zinc, cobalt, and phosphorus in the western North Atlantic Ocean |
topic_facet |
Trace metals Phosphorus Sargasso Sea |
description |
Author Posting. © American Geophysical Union, 2008. 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 22 (2008): GB4012, doi:10.1029/2007GB003119. Many trace metals such as iron, copper, and manganese have lower concentrations in the surface waters of the North Pacific Ocean than in North Atlantic surface waters. However, cobalt and zinc concentrations in North Atlantic surface waters are often as low as those reported in the North Pacific. We studied the relationship between the distribution of cobalt, zinc, and phosphorus in surface waters of the western North Atlantic Ocean. Both metals show strong depletion in the southern Sargasso Sea, a region characterized by exceedingly low dissolved inorganic phosphorus (generally <4 nmol L−1) and measurable alkaline phosphatase activity. Alkaline phosphatase is a metalloenzyme (typically containing zinc) that cleaves phosphate monoesters and is a diagnostic indicator of phosphorus stress in phytoplankton. In contrast to the North Pacific Ocean, cobalt and zinc appear to be drawn down to their lowest values only when inorganic phosphorus is below 10 nmol L−1 in the North Atlantic Ocean. Lower levels of phosphorus in the Atlantic may contribute to these differences, possibly through an increased biological demand for zinc and cobalt associated with dissolved organic phosphorus acquisition. This hypothesis is consistent with results of a culture study where alkaline phosphatase activity decreased in the model coccolithophore Emiliania huxleyi upon zinc and cobalt limitation. This research was supported by NSF grant OCE- 0136835 to J.W.M. and S.D. R.W.J. was supported by an EPA STAR Fellowship. |
format |
Article in Journal/Newspaper |
author |
Jakuba, Rachel W. Moffett, James W. Dyhrman, Sonya T. |
author_facet |
Jakuba, Rachel W. Moffett, James W. Dyhrman, Sonya T. |
author_sort |
Jakuba, Rachel W. |
title |
Evidence for the linked biogeochemical cycling of zinc, cobalt, and phosphorus in the western North Atlantic Ocean |
title_short |
Evidence for the linked biogeochemical cycling of zinc, cobalt, and phosphorus in the western North Atlantic Ocean |
title_full |
Evidence for the linked biogeochemical cycling of zinc, cobalt, and phosphorus in the western North Atlantic Ocean |
title_fullStr |
Evidence for the linked biogeochemical cycling of zinc, cobalt, and phosphorus in the western North Atlantic Ocean |
title_full_unstemmed |
Evidence for the linked biogeochemical cycling of zinc, cobalt, and phosphorus in the western North Atlantic Ocean |
title_sort |
evidence for the linked biogeochemical cycling of zinc, cobalt, and phosphorus in the western north atlantic ocean |
publisher |
American Geophysical Union |
publishDate |
2008 |
url |
https://hdl.handle.net/1912/3410 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Global Biogeochemical Cycles 22 (2008): GB4012 doi:10.1029/2007GB003119 |
op_relation |
https://doi.org/10.1029/2007GB003119 Global Biogeochemical Cycles 22 (2008): GB4012 https://hdl.handle.net/1912/3410 doi:10.1029/2007GB003119 |
op_doi |
https://doi.org/10.1029/2007GB003119 |
container_title |
Global Biogeochemical Cycles |
container_volume |
22 |
container_issue |
4 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766120146316820480 |