The influence of Arctic Fe and Atlantic fixed N on summertime primary production in Fram Strait, North Greenland Sea
Climate change has led to a ~ 40% reduction in summer Arctic sea-ice cover extent since the 1970s. Resultant increases in light availability may enhance phytoplankton production. Direct evidence for factors currently constraining summertime phytoplankton growth in the Arctic region is however lackin...
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ftpubmed:oai:pubmedcentral.nih.gov:7499181 2023-05-15T14:49:19+02:00 The influence of Arctic Fe and Atlantic fixed N on summertime primary production in Fram Strait, North Greenland Sea Krisch, Stephan Browning, Thomas J. Graeve, Martin Ludwichowski, Kai-Uwe Lodeiro, Pablo Hopwood, Mark J. Roig, Stéphane Yong, Jaw-Chuen Kanzow, Torsten Achterberg, Eric P. 2020-09-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7499181/ https://doi.org/10.1038/s41598-020-72100-9 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7499181/ http://dx.doi.org/10.1038/s41598-020-72100-9 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Sci Rep Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-72100-9 2020-09-27T00:31:59Z Climate change has led to a ~ 40% reduction in summer Arctic sea-ice cover extent since the 1970s. Resultant increases in light availability may enhance phytoplankton production. Direct evidence for factors currently constraining summertime phytoplankton growth in the Arctic region is however lacking. GEOTRACES cruise GN05 conducted a Fram Strait transect from Svalbard to the NE Greenland Shelf in summer 2016, sampling for bioessential trace metals (Fe, Co, Zn, Mn) and macronutrients (N, Si, P) at ~ 79°N. Five bioassay experiments were conducted to establish phytoplankton responses to additions of Fe, N, Fe + N and volcanic dust. Ambient nutrient concentrations suggested N and Fe were deficient in surface seawater relative to typical phytoplankton requirements. A west-to-east trend in the relative deficiency of N and Fe was apparent, with N becoming more deficient towards Greenland and Fe more deficient towards Svalbard. This aligned with phytoplankton responses in bioassay experiments, which showed greatest chlorophyll-a increases in + N treatment near Greenland and + N + Fe near Svalbard. Collectively these results suggest primary N limitation of phytoplankton growth throughout the study region, with conditions potentially approaching secondary Fe limitation in the eastern Fram Strait. We suggest that the supply of Atlantic-derived N and Arctic-derived Fe exerts a strong control on summertime nutrient stoichiometry and resultant limitation patterns across the Fram Strait region. Text Arctic Climate change Fram Strait Greenland Greenland Sea North Greenland Phytoplankton Sea ice Svalbard PubMed Central (PMC) Arctic Greenland Svalbard Scientific Reports 10 1 |
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Article Krisch, Stephan Browning, Thomas J. Graeve, Martin Ludwichowski, Kai-Uwe Lodeiro, Pablo Hopwood, Mark J. Roig, Stéphane Yong, Jaw-Chuen Kanzow, Torsten Achterberg, Eric P. The influence of Arctic Fe and Atlantic fixed N on summertime primary production in Fram Strait, North Greenland Sea |
topic_facet |
Article |
description |
Climate change has led to a ~ 40% reduction in summer Arctic sea-ice cover extent since the 1970s. Resultant increases in light availability may enhance phytoplankton production. Direct evidence for factors currently constraining summertime phytoplankton growth in the Arctic region is however lacking. GEOTRACES cruise GN05 conducted a Fram Strait transect from Svalbard to the NE Greenland Shelf in summer 2016, sampling for bioessential trace metals (Fe, Co, Zn, Mn) and macronutrients (N, Si, P) at ~ 79°N. Five bioassay experiments were conducted to establish phytoplankton responses to additions of Fe, N, Fe + N and volcanic dust. Ambient nutrient concentrations suggested N and Fe were deficient in surface seawater relative to typical phytoplankton requirements. A west-to-east trend in the relative deficiency of N and Fe was apparent, with N becoming more deficient towards Greenland and Fe more deficient towards Svalbard. This aligned with phytoplankton responses in bioassay experiments, which showed greatest chlorophyll-a increases in + N treatment near Greenland and + N + Fe near Svalbard. Collectively these results suggest primary N limitation of phytoplankton growth throughout the study region, with conditions potentially approaching secondary Fe limitation in the eastern Fram Strait. We suggest that the supply of Atlantic-derived N and Arctic-derived Fe exerts a strong control on summertime nutrient stoichiometry and resultant limitation patterns across the Fram Strait region. |
format |
Text |
author |
Krisch, Stephan Browning, Thomas J. Graeve, Martin Ludwichowski, Kai-Uwe Lodeiro, Pablo Hopwood, Mark J. Roig, Stéphane Yong, Jaw-Chuen Kanzow, Torsten Achterberg, Eric P. |
author_facet |
Krisch, Stephan Browning, Thomas J. Graeve, Martin Ludwichowski, Kai-Uwe Lodeiro, Pablo Hopwood, Mark J. Roig, Stéphane Yong, Jaw-Chuen Kanzow, Torsten Achterberg, Eric P. |
author_sort |
Krisch, Stephan |
title |
The influence of Arctic Fe and Atlantic fixed N on summertime primary production in Fram Strait, North Greenland Sea |
title_short |
The influence of Arctic Fe and Atlantic fixed N on summertime primary production in Fram Strait, North Greenland Sea |
title_full |
The influence of Arctic Fe and Atlantic fixed N on summertime primary production in Fram Strait, North Greenland Sea |
title_fullStr |
The influence of Arctic Fe and Atlantic fixed N on summertime primary production in Fram Strait, North Greenland Sea |
title_full_unstemmed |
The influence of Arctic Fe and Atlantic fixed N on summertime primary production in Fram Strait, North Greenland Sea |
title_sort |
influence of arctic fe and atlantic fixed n on summertime primary production in fram strait, north greenland sea |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7499181/ https://doi.org/10.1038/s41598-020-72100-9 |
geographic |
Arctic Greenland Svalbard |
geographic_facet |
Arctic Greenland Svalbard |
genre |
Arctic Climate change Fram Strait Greenland Greenland Sea North Greenland Phytoplankton Sea ice Svalbard |
genre_facet |
Arctic Climate change Fram Strait Greenland Greenland Sea North Greenland Phytoplankton Sea ice Svalbard |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7499181/ http://dx.doi.org/10.1038/s41598-020-72100-9 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-72100-9 |
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Scientific Reports |
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