The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms
Under-ice blooms of phytoplankton in the Chukchi Sea have been observed, with strong implications for our understanding of the production regimes in the Arctic Ocean. Using a combination of satellite remote sensing of phytoplankton biomass, in situ observations under sea ice from an autonomous under...
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ftpubmed:oai:pubmedcentral.nih.gov:6438636 2023-05-15T13:51:43+02:00 The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms Johnsen, Geir Norli, Marit Moline, Mark Robbins, Ian von Quillfeldt, Cecilie Sørensen, Kai Cottier, Finlo Berge, Jørgen 2018-02-13 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6438636/ https://doi.org/10.1007/s00300-018-2278-5 en eng Springer Berlin Heidelberg http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6438636/ http://dx.doi.org/10.1007/s00300-018-2278-5 © The Author(s) 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. CC-BY Original Paper Text 2018 ftpubmed https://doi.org/10.1007/s00300-018-2278-5 2019-04-21T00:18:49Z Under-ice blooms of phytoplankton in the Chukchi Sea have been observed, with strong implications for our understanding of the production regimes in the Arctic Ocean. Using a combination of satellite remote sensing of phytoplankton biomass, in situ observations under sea ice from an autonomous underwater vehicle (AUV), and in vivo photophysiology, we examined the composition, magnitude and origin of a bloom detected beneath the sea ice Northwest of Svalbard (Southern Yermak Plateau) in May 2010. In situ concentration of up to 20 mg chlorophyll a [Chl a] m(−3), were dominated by the northern planktonic spring species of diatoms, Thalassiosira nordenskioeldii, T. antarctica var. borealis, Chaetoceros socialis species complex and Fragilariopsis oceanica. These species were also found south of the marginal ice zone (MIZ). Cells in the water column under the sea ice were typically high-light acclimated, with a mean light saturation index (E(k)) of 138 μmol photons m(−2) s(−1) and a ratio between photoprotective carotenoids (PPC) and Chl a (w:w) of 0.2. Remotely sensed data of [Chl a] showed a 32,000 km(2) bloom developing south of the MIZ. In effect, our data suggest that the observed under-ice bloom was in fact a bloom developed in open waters south of the ice edge, and that a combination of northward-flowing water masses and southward drifting sea ice effectively positioned the bloom under the sea ice. This have implications for our general understanding of under-ice blooms, suggesting that their origin and connection with open water may be different in different regions of the Arctic. Text Antarc* Antarctica Arctic Arctic Ocean Chukchi Chukchi Sea Phytoplankton Sea ice Svalbard Yermak plateau PubMed Central (PMC) Arctic Arctic Ocean Chukchi Sea Svalbard Yermak Plateau ENVELOPE(5.000,5.000,81.250,81.250) Polar Biology 41 6 1197 1216 |
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Open Polar |
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ftpubmed |
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English |
topic |
Original Paper |
spellingShingle |
Original Paper Johnsen, Geir Norli, Marit Moline, Mark Robbins, Ian von Quillfeldt, Cecilie Sørensen, Kai Cottier, Finlo Berge, Jørgen The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms |
topic_facet |
Original Paper |
description |
Under-ice blooms of phytoplankton in the Chukchi Sea have been observed, with strong implications for our understanding of the production regimes in the Arctic Ocean. Using a combination of satellite remote sensing of phytoplankton biomass, in situ observations under sea ice from an autonomous underwater vehicle (AUV), and in vivo photophysiology, we examined the composition, magnitude and origin of a bloom detected beneath the sea ice Northwest of Svalbard (Southern Yermak Plateau) in May 2010. In situ concentration of up to 20 mg chlorophyll a [Chl a] m(−3), were dominated by the northern planktonic spring species of diatoms, Thalassiosira nordenskioeldii, T. antarctica var. borealis, Chaetoceros socialis species complex and Fragilariopsis oceanica. These species were also found south of the marginal ice zone (MIZ). Cells in the water column under the sea ice were typically high-light acclimated, with a mean light saturation index (E(k)) of 138 μmol photons m(−2) s(−1) and a ratio between photoprotective carotenoids (PPC) and Chl a (w:w) of 0.2. Remotely sensed data of [Chl a] showed a 32,000 km(2) bloom developing south of the MIZ. In effect, our data suggest that the observed under-ice bloom was in fact a bloom developed in open waters south of the ice edge, and that a combination of northward-flowing water masses and southward drifting sea ice effectively positioned the bloom under the sea ice. This have implications for our general understanding of under-ice blooms, suggesting that their origin and connection with open water may be different in different regions of the Arctic. |
format |
Text |
author |
Johnsen, Geir Norli, Marit Moline, Mark Robbins, Ian von Quillfeldt, Cecilie Sørensen, Kai Cottier, Finlo Berge, Jørgen |
author_facet |
Johnsen, Geir Norli, Marit Moline, Mark Robbins, Ian von Quillfeldt, Cecilie Sørensen, Kai Cottier, Finlo Berge, Jørgen |
author_sort |
Johnsen, Geir |
title |
The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms |
title_short |
The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms |
title_full |
The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms |
title_fullStr |
The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms |
title_full_unstemmed |
The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms |
title_sort |
advective origin of an under-ice spring bloom in the arctic ocean using multiple observational platforms |
publisher |
Springer Berlin Heidelberg |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6438636/ https://doi.org/10.1007/s00300-018-2278-5 |
long_lat |
ENVELOPE(5.000,5.000,81.250,81.250) |
geographic |
Arctic Arctic Ocean Chukchi Sea Svalbard Yermak Plateau |
geographic_facet |
Arctic Arctic Ocean Chukchi Sea Svalbard Yermak Plateau |
genre |
Antarc* Antarctica Arctic Arctic Ocean Chukchi Chukchi Sea Phytoplankton Sea ice Svalbard Yermak plateau |
genre_facet |
Antarc* Antarctica Arctic Arctic Ocean Chukchi Chukchi Sea Phytoplankton Sea ice Svalbard Yermak plateau |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6438636/ http://dx.doi.org/10.1007/s00300-018-2278-5 |
op_rights |
© The Author(s) 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00300-018-2278-5 |
container_title |
Polar Biology |
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41 |
container_issue |
6 |
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1197 |
op_container_end_page |
1216 |
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