Iron biogeochemistry in the high latitude North Atlantic Ocean
Iron (Fe) is an essential micronutrient for marine microbial organisms, and low supply controls productivity in large parts of the world’s ocean. The high latitude North Atlantic is seasonally Fe limited, but Fe distributions and source strengths are poorly constrained. Surface ocean dissolved Fe (D...
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:66046 2023-06-06T11:53:28+02:00 Iron biogeochemistry in the high latitude North Atlantic Ocean Achterberg, Eric P. Steigenberger, Sebastian Marsay, Chris M. LeMoigne, Frédéric A. C. Painter, Stuart C. Baker, Alex R. Connelly, Douglas P. Moore, C. Mark Tagliabue, Alessandro Tanhua, Toste 2018-01-19 application/pdf https://ueaeprints.uea.ac.uk/id/eprint/66046/ https://ueaeprints.uea.ac.uk/id/eprint/66046/2/Published_manuscript.pdf https://doi.org/10.1038/s41598-018-19472-1 en eng https://ueaeprints.uea.ac.uk/id/eprint/66046/2/Published_manuscript.pdf Achterberg, Eric P., Steigenberger, Sebastian, Marsay, Chris M., LeMoigne, Frédéric A. C., Painter, Stuart C., Baker, Alex R., Connelly, Douglas P., Moore, C. Mark, Tagliabue, Alessandro and Tanhua, Toste (2018) Iron biogeochemistry in the high latitude North Atlantic Ocean. Scientific Reports, 8. ISSN 2045-2322 doi:10.1038/s41598-018-19472-1 cc_by Article PeerReviewed 2018 ftuniveastangl https://doi.org/10.1038/s41598-018-19472-1 2023-04-13T22:32:04Z Iron (Fe) is an essential micronutrient for marine microbial organisms, and low supply controls productivity in large parts of the world’s ocean. The high latitude North Atlantic is seasonally Fe limited, but Fe distributions and source strengths are poorly constrained. Surface ocean dissolved Fe (DFe) concentrations were low in the study region (<0.1 nM) in summer 2010, with significant perturbations during spring 2010 in the Iceland Basin as a result of an eruption of the Eyjafjallajökull volcano (up to 2.5 nM DFe near Iceland) with biogeochemical consequences. Deep water concentrations in the vicinity of the Reykjanes Ridge system were influenced by pronounced sediment resuspension, with indications for additional inputs by hydrothermal vents, with subsequent lateral transport of Fe and manganese plumes of up to 250–300 km. Particulate Fe formed the dominant pool, as evidenced by 4–17 fold higher total dissolvable Fe compared with DFe concentrations, and a dynamic exchange between the fractions appeared to buffer deep water DFe. Here we show that Fe supply associated with deep winter mixing (up to 103 nmol m−2 d−1) was at least ca. 4–10 times higher than atmospheric deposition, diffusive fluxes at the base of the summer mixed layer, and horizontal surface ocean fluxes. Article in Journal/Newspaper Eyjafjallajökull Iceland North Atlantic University of East Anglia: UEA Digital Repository Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Scientific Reports 8 1 |
institution |
Open Polar |
collection |
University of East Anglia: UEA Digital Repository |
op_collection_id |
ftuniveastangl |
language |
English |
description |
Iron (Fe) is an essential micronutrient for marine microbial organisms, and low supply controls productivity in large parts of the world’s ocean. The high latitude North Atlantic is seasonally Fe limited, but Fe distributions and source strengths are poorly constrained. Surface ocean dissolved Fe (DFe) concentrations were low in the study region (<0.1 nM) in summer 2010, with significant perturbations during spring 2010 in the Iceland Basin as a result of an eruption of the Eyjafjallajökull volcano (up to 2.5 nM DFe near Iceland) with biogeochemical consequences. Deep water concentrations in the vicinity of the Reykjanes Ridge system were influenced by pronounced sediment resuspension, with indications for additional inputs by hydrothermal vents, with subsequent lateral transport of Fe and manganese plumes of up to 250–300 km. Particulate Fe formed the dominant pool, as evidenced by 4–17 fold higher total dissolvable Fe compared with DFe concentrations, and a dynamic exchange between the fractions appeared to buffer deep water DFe. Here we show that Fe supply associated with deep winter mixing (up to 103 nmol m−2 d−1) was at least ca. 4–10 times higher than atmospheric deposition, diffusive fluxes at the base of the summer mixed layer, and horizontal surface ocean fluxes. |
format |
Article in Journal/Newspaper |
author |
Achterberg, Eric P. Steigenberger, Sebastian Marsay, Chris M. LeMoigne, Frédéric A. C. Painter, Stuart C. Baker, Alex R. Connelly, Douglas P. Moore, C. Mark Tagliabue, Alessandro Tanhua, Toste |
spellingShingle |
Achterberg, Eric P. Steigenberger, Sebastian Marsay, Chris M. LeMoigne, Frédéric A. C. Painter, Stuart C. Baker, Alex R. Connelly, Douglas P. Moore, C. Mark Tagliabue, Alessandro Tanhua, Toste Iron biogeochemistry in the high latitude North Atlantic Ocean |
author_facet |
Achterberg, Eric P. Steigenberger, Sebastian Marsay, Chris M. LeMoigne, Frédéric A. C. Painter, Stuart C. Baker, Alex R. Connelly, Douglas P. Moore, C. Mark Tagliabue, Alessandro Tanhua, Toste |
author_sort |
Achterberg, Eric P. |
title |
Iron biogeochemistry in the high latitude North Atlantic Ocean |
title_short |
Iron biogeochemistry in the high latitude North Atlantic Ocean |
title_full |
Iron biogeochemistry in the high latitude North Atlantic Ocean |
title_fullStr |
Iron biogeochemistry in the high latitude North Atlantic Ocean |
title_full_unstemmed |
Iron biogeochemistry in the high latitude North Atlantic Ocean |
title_sort |
iron biogeochemistry in the high latitude north atlantic ocean |
publishDate |
2018 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/66046/ https://ueaeprints.uea.ac.uk/id/eprint/66046/2/Published_manuscript.pdf https://doi.org/10.1038/s41598-018-19472-1 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Reykjanes |
geographic_facet |
Reykjanes |
genre |
Eyjafjallajökull Iceland North Atlantic |
genre_facet |
Eyjafjallajökull Iceland North Atlantic |
op_relation |
https://ueaeprints.uea.ac.uk/id/eprint/66046/2/Published_manuscript.pdf Achterberg, Eric P., Steigenberger, Sebastian, Marsay, Chris M., LeMoigne, Frédéric A. C., Painter, Stuart C., Baker, Alex R., Connelly, Douglas P., Moore, C. Mark, Tagliabue, Alessandro and Tanhua, Toste (2018) Iron biogeochemistry in the high latitude North Atlantic Ocean. Scientific Reports, 8. ISSN 2045-2322 doi:10.1038/s41598-018-19472-1 |
op_rights |
cc_by |
op_doi |
https://doi.org/10.1038/s41598-018-19472-1 |
container_title |
Scientific Reports |
container_volume |
8 |
container_issue |
1 |
_version_ |
1767959636892188672 |