Evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast Pacific
The availability and toxicity of copper (Cu) to marine phytoplankton involve complexation of Cu by dissolved organic ligands of uncertain origin and structure. As part of a GEOTRACES process study we used immobilized copper(II)-ion affinity chromatography (IMAC) to isolate and obtain information abo...
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ftunivbern:oai:boris.unibe.ch:159955 2023-08-20T04:04:50+02:00 Evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast Pacific Nixon, Richard L. Peña, M. Angelica Taves, Robyn Janssen, David J. Cullen, Jay T. Ross, Andrew R.S. 2021 application/pdf https://boris.unibe.ch/159955/2/1-s2.0-S0304420321001195-main.pdf https://boris.unibe.ch/159955/ eng eng Elsevier https://boris.unibe.ch/159955/ info:eu-repo/semantics/openAccess Nixon, Richard L.; Peña, M. Angelica; Taves, Robyn; Janssen, David J.; Cullen, Jay T.; Ross, Andrew R.S. (2021). Evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast Pacific. Marine chemistry, 237(104034), p. 104034. Elsevier 10.1016/j.marchem.2021.104034 <http://dx.doi.org/10.1016/j.marchem.2021.104034> 550 Earth sciences & geology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2021 ftunivbern https://doi.org/10.1016/j.marchem.2021.104034 2023-07-31T22:09:00Z The availability and toxicity of copper (Cu) to marine phytoplankton involve complexation of Cu by dissolved organic ligands of uncertain origin and structure. As part of a GEOTRACES process study we used immobilized copper(II)-ion affinity chromatography (IMAC) to isolate and obtain information about the distribution and potential sources of Cu-complexing ligands along Line P in the subarctic northeast Pacific. Filtered seawater samples were collected from up to five stations during cruises in June 2016, June 2017, August 2017, and September 2018. Copper ligand concentrations were consistently higher at coastal station P4 than at other stations, particularly in surface waters. Ligand concentrations in the upper 40 m at station P26 increased between 2016 and 2018 following the 2014–2016 warming anomaly in the northeast Pacific, whereas an increase in ligand concentration from June to August 2017 coincided with seasonal increases in dissolved organic carbon (DOC) and net community production. At all stations, the depth of highest ligand concentration and maximum chlorophyll concentration coincided. A positive linear correlation between ligand and chlorophyll concentrations suggests that marine phytoplankton are a significant source of Cu ligands along Line P. The lower than expected ligand concentrations at station P26 in June 2016 are consistent with changes in phytoplankton ecology associated with the 2014–2016 warming anomaly. Comparing results from coastal and oceanic waters with those obtained previously in the Canadian Arctic suggests that terrigenous organic matter and marine humic substances contribute to the pool of Cu ligands captured by IMAC. Article in Journal/Newspaper Arctic Phytoplankton Subarctic BORIS (Bern Open Repository and Information System, University of Bern) Arctic Pacific Marine Chemistry 237 104034 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
550 Earth sciences & geology |
spellingShingle |
550 Earth sciences & geology Nixon, Richard L. Peña, M. Angelica Taves, Robyn Janssen, David J. Cullen, Jay T. Ross, Andrew R.S. Evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast Pacific |
topic_facet |
550 Earth sciences & geology |
description |
The availability and toxicity of copper (Cu) to marine phytoplankton involve complexation of Cu by dissolved organic ligands of uncertain origin and structure. As part of a GEOTRACES process study we used immobilized copper(II)-ion affinity chromatography (IMAC) to isolate and obtain information about the distribution and potential sources of Cu-complexing ligands along Line P in the subarctic northeast Pacific. Filtered seawater samples were collected from up to five stations during cruises in June 2016, June 2017, August 2017, and September 2018. Copper ligand concentrations were consistently higher at coastal station P4 than at other stations, particularly in surface waters. Ligand concentrations in the upper 40 m at station P26 increased between 2016 and 2018 following the 2014–2016 warming anomaly in the northeast Pacific, whereas an increase in ligand concentration from June to August 2017 coincided with seasonal increases in dissolved organic carbon (DOC) and net community production. At all stations, the depth of highest ligand concentration and maximum chlorophyll concentration coincided. A positive linear correlation between ligand and chlorophyll concentrations suggests that marine phytoplankton are a significant source of Cu ligands along Line P. The lower than expected ligand concentrations at station P26 in June 2016 are consistent with changes in phytoplankton ecology associated with the 2014–2016 warming anomaly. Comparing results from coastal and oceanic waters with those obtained previously in the Canadian Arctic suggests that terrigenous organic matter and marine humic substances contribute to the pool of Cu ligands captured by IMAC. |
format |
Article in Journal/Newspaper |
author |
Nixon, Richard L. Peña, M. Angelica Taves, Robyn Janssen, David J. Cullen, Jay T. Ross, Andrew R.S. |
author_facet |
Nixon, Richard L. Peña, M. Angelica Taves, Robyn Janssen, David J. Cullen, Jay T. Ross, Andrew R.S. |
author_sort |
Nixon, Richard L. |
title |
Evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast Pacific |
title_short |
Evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast Pacific |
title_full |
Evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast Pacific |
title_fullStr |
Evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast Pacific |
title_full_unstemmed |
Evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast Pacific |
title_sort |
evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast pacific |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://boris.unibe.ch/159955/2/1-s2.0-S0304420321001195-main.pdf https://boris.unibe.ch/159955/ |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Phytoplankton Subarctic |
genre_facet |
Arctic Phytoplankton Subarctic |
op_source |
Nixon, Richard L.; Peña, M. Angelica; Taves, Robyn; Janssen, David J.; Cullen, Jay T.; Ross, Andrew R.S. (2021). Evidence for the production of copper-complexing ligands by marine phytoplankton in the subarctic northeast Pacific. Marine chemistry, 237(104034), p. 104034. Elsevier 10.1016/j.marchem.2021.104034 <http://dx.doi.org/10.1016/j.marchem.2021.104034> |
op_relation |
https://boris.unibe.ch/159955/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.marchem.2021.104034 |
container_title |
Marine Chemistry |
container_volume |
237 |
container_start_page |
104034 |
_version_ |
1774715240148107264 |