Dissolved Fe in the Deep and Upper Arctic Ocean With a Focus on Fe Limitation in the Nansen Basin
Global warming resulting from the release of anthropogenic carbon dioxide is rapidly changing the Arctic Ocean. Over the last decade sea ice declined in extent and thickness. As a result, improved light availability has increased Arctic net primary production, including in under-ice phytoplankton bl...
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ftdoajarticles:oai:doaj.org/article:86c8aacd075045d7b5cbb3d172175400 2023-05-15T14:35:08+02:00 Dissolved Fe in the Deep and Upper Arctic Ocean With a Focus on Fe Limitation in the Nansen Basin Micha J. A. Rijkenberg Hans A. Slagter Michiel Rutgers van der Loeff Jan van Ooijen Loes J. A. Gerringa 2018-03-01T00:00:00Z https://doi.org/10.3389/fmars.2018.00088 https://doaj.org/article/86c8aacd075045d7b5cbb3d172175400 EN eng Frontiers Media S.A. http://journal.frontiersin.org/article/10.3389/fmars.2018.00088/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2018.00088 https://doaj.org/article/86c8aacd075045d7b5cbb3d172175400 Frontiers in Marine Science, Vol 5 (2018) GEOTRACES dissolved Fe Arctic Ocean Fe limitation climate change Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2018 ftdoajarticles https://doi.org/10.3389/fmars.2018.00088 2022-12-31T13:44:52Z Global warming resulting from the release of anthropogenic carbon dioxide is rapidly changing the Arctic Ocean. Over the last decade sea ice declined in extent and thickness. As a result, improved light availability has increased Arctic net primary production, including in under-ice phytoplankton blooms. During the GEOTRACES cruise PS94 in the summer of 2015 we measured dissolved iron (DFe), nitrate and phosphate throughout the central part of the Eurasian Arctic. In the deeper waters concentrations of DFe were higher, which we relate to resuspension on the continental slope in the Nansen Basin and hydrothermal activity at the Gakkel Ridge. The main source of DFe in the surface was the Trans Polar Drift (TPD), resulting in concentrations up to 4.42 nM. Nevertheless, using nutrient ratios we show that a large under-ice bloom in the Nansen basin was limited by Fe. Fe limitation potentially prevented up to 54% of the available nitrate and nitrite from being used for primary production. In the Barents Sea, Fe is expected to be the first nutrient to be depleted as well. Changes in the Arctic biogeochemical cycle of Fe due to retreating ice may therefore have large consequences for primary production, the Arctic ecosystem and the subsequent drawdown of carbon dioxide. Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea Climate change Global warming Nansen Basin Phytoplankton Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Barents Sea Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Frontiers in Marine Science 5 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
GEOTRACES dissolved Fe Arctic Ocean Fe limitation climate change Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
GEOTRACES dissolved Fe Arctic Ocean Fe limitation climate change Science Q General. Including nature conservation geographical distribution QH1-199.5 Micha J. A. Rijkenberg Hans A. Slagter Michiel Rutgers van der Loeff Jan van Ooijen Loes J. A. Gerringa Dissolved Fe in the Deep and Upper Arctic Ocean With a Focus on Fe Limitation in the Nansen Basin |
topic_facet |
GEOTRACES dissolved Fe Arctic Ocean Fe limitation climate change Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Global warming resulting from the release of anthropogenic carbon dioxide is rapidly changing the Arctic Ocean. Over the last decade sea ice declined in extent and thickness. As a result, improved light availability has increased Arctic net primary production, including in under-ice phytoplankton blooms. During the GEOTRACES cruise PS94 in the summer of 2015 we measured dissolved iron (DFe), nitrate and phosphate throughout the central part of the Eurasian Arctic. In the deeper waters concentrations of DFe were higher, which we relate to resuspension on the continental slope in the Nansen Basin and hydrothermal activity at the Gakkel Ridge. The main source of DFe in the surface was the Trans Polar Drift (TPD), resulting in concentrations up to 4.42 nM. Nevertheless, using nutrient ratios we show that a large under-ice bloom in the Nansen basin was limited by Fe. Fe limitation potentially prevented up to 54% of the available nitrate and nitrite from being used for primary production. In the Barents Sea, Fe is expected to be the first nutrient to be depleted as well. Changes in the Arctic biogeochemical cycle of Fe due to retreating ice may therefore have large consequences for primary production, the Arctic ecosystem and the subsequent drawdown of carbon dioxide. |
format |
Article in Journal/Newspaper |
author |
Micha J. A. Rijkenberg Hans A. Slagter Michiel Rutgers van der Loeff Jan van Ooijen Loes J. A. Gerringa |
author_facet |
Micha J. A. Rijkenberg Hans A. Slagter Michiel Rutgers van der Loeff Jan van Ooijen Loes J. A. Gerringa |
author_sort |
Micha J. A. Rijkenberg |
title |
Dissolved Fe in the Deep and Upper Arctic Ocean With a Focus on Fe Limitation in the Nansen Basin |
title_short |
Dissolved Fe in the Deep and Upper Arctic Ocean With a Focus on Fe Limitation in the Nansen Basin |
title_full |
Dissolved Fe in the Deep and Upper Arctic Ocean With a Focus on Fe Limitation in the Nansen Basin |
title_fullStr |
Dissolved Fe in the Deep and Upper Arctic Ocean With a Focus on Fe Limitation in the Nansen Basin |
title_full_unstemmed |
Dissolved Fe in the Deep and Upper Arctic Ocean With a Focus on Fe Limitation in the Nansen Basin |
title_sort |
dissolved fe in the deep and upper arctic ocean with a focus on fe limitation in the nansen basin |
publisher |
Frontiers Media S.A. |
publishDate |
2018 |
url |
https://doi.org/10.3389/fmars.2018.00088 https://doaj.org/article/86c8aacd075045d7b5cbb3d172175400 |
long_lat |
ENVELOPE(90.000,90.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Barents Sea Gakkel Ridge |
geographic_facet |
Arctic Arctic Ocean Barents Sea Gakkel Ridge |
genre |
Arctic Arctic Ocean Barents Sea Climate change Global warming Nansen Basin Phytoplankton Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Climate change Global warming Nansen Basin Phytoplankton Sea ice |
op_source |
Frontiers in Marine Science, Vol 5 (2018) |
op_relation |
http://journal.frontiersin.org/article/10.3389/fmars.2018.00088/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2018.00088 https://doaj.org/article/86c8aacd075045d7b5cbb3d172175400 |
op_doi |
https://doi.org/10.3389/fmars.2018.00088 |
container_title |
Frontiers in Marine Science |
container_volume |
5 |
_version_ |
1766308009768648704 |