Arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics
Photophysiological and biochemical characteristics were investigated in natural communities of Arctic sea ice algae and phytoplankton to understand their respective responses towards variable irradiance and nutrient regimes. This study revealed large differences in photosynthetic efficiency and capa...
Published in: | Marine Ecology Progress Series |
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Language: | English |
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Online Access: | https://hdl.handle.net/10037/24382 https://doi.org/10.3354/meps13675 |
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ftunivtroemsoe:oai:munin.uit.no:10037/24382 2023-05-15T14:25:54+02:00 Arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics Kvernvik, Ane Cecilie Hoppe, Clara Jule Marie Greenacre, Michael Verbiest, Sander Wiktor, Józef Maria Gabrielsen, Tove M. Reigstad, Marit Leu, Eva 2021-05-20 https://hdl.handle.net/10037/24382 https://doi.org/10.3354/meps13675 eng eng Inter-Research Marine Ecology Progress Series Kvernvik AC, Hoppe CJ, Greenacre M, Verbiest S, Wiktor JM, Gabrielsen TM, Reigstad M, Leu E. Arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics. Marine Ecology Progress Series. 2021;666:31-55 FRIDAID 1955327 doi:10.3354/meps13675 0171-8630 1616-1599 https://hdl.handle.net/10037/24382 openAccess Copyright 2021 Inter-Research Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2021 ftunivtroemsoe https://doi.org/10.3354/meps13675 2022-03-16T23:58:04Z Photophysiological and biochemical characteristics were investigated in natural communities of Arctic sea ice algae and phytoplankton to understand their respective responses towards variable irradiance and nutrient regimes. This study revealed large differences in photosynthetic efficiency and capacity between the 2 types of algal assemblages. Sea ice algal assemblages clearly displayed increased photoprotective energy dissipation under the highest daily average irradiance levels (>8 μmol photons m −2 s −1 ). In contrast, phytoplankton assemblages were generally light-limited within the same irradiance ranges. Furthermore, phytoplankton assemblages exhibited more efficient carbon assimilation rates in the low irradiance range compared to sea ice algae, possibly explaining the ability of phytoplankton to generate substantial under-ice blooms. They were also able to readily adjust and increase their carbon production to higher irradiances. The Arctic is warming more rapidly than any other oceanic region on the planet, and as a consequence, irradiance levels experienced by microalgae are expected to increase due to declining ice thickness and snow cover, as well as enhanced stratification. The results of this study suggest that sea ice algae may have less capacity to adapt to the expected environmental changes compared to phytoplankton. We therefore anticipate a change in sea ice-based vs. pelagic primary production with respect to timing and quantity in a future Arctic. The clearly distinct responses of sea ice algae vs. phytoplankton need to be incorporated into model scenarios of current and future Arctic algal blooms and considered when predicting implications for the entire ecosystem and associated biogeochemical fluxes. Article in Journal/Newspaper Arctic Arctic ice algae Phytoplankton Sea ice University of Tromsø: Munin Open Research Archive Arctic Marine Ecology Progress Series 666 31 55 |
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Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
Photophysiological and biochemical characteristics were investigated in natural communities of Arctic sea ice algae and phytoplankton to understand their respective responses towards variable irradiance and nutrient regimes. This study revealed large differences in photosynthetic efficiency and capacity between the 2 types of algal assemblages. Sea ice algal assemblages clearly displayed increased photoprotective energy dissipation under the highest daily average irradiance levels (>8 μmol photons m −2 s −1 ). In contrast, phytoplankton assemblages were generally light-limited within the same irradiance ranges. Furthermore, phytoplankton assemblages exhibited more efficient carbon assimilation rates in the low irradiance range compared to sea ice algae, possibly explaining the ability of phytoplankton to generate substantial under-ice blooms. They were also able to readily adjust and increase their carbon production to higher irradiances. The Arctic is warming more rapidly than any other oceanic region on the planet, and as a consequence, irradiance levels experienced by microalgae are expected to increase due to declining ice thickness and snow cover, as well as enhanced stratification. The results of this study suggest that sea ice algae may have less capacity to adapt to the expected environmental changes compared to phytoplankton. We therefore anticipate a change in sea ice-based vs. pelagic primary production with respect to timing and quantity in a future Arctic. The clearly distinct responses of sea ice algae vs. phytoplankton need to be incorporated into model scenarios of current and future Arctic algal blooms and considered when predicting implications for the entire ecosystem and associated biogeochemical fluxes. |
format |
Article in Journal/Newspaper |
author |
Kvernvik, Ane Cecilie Hoppe, Clara Jule Marie Greenacre, Michael Verbiest, Sander Wiktor, Józef Maria Gabrielsen, Tove M. Reigstad, Marit Leu, Eva |
spellingShingle |
Kvernvik, Ane Cecilie Hoppe, Clara Jule Marie Greenacre, Michael Verbiest, Sander Wiktor, Józef Maria Gabrielsen, Tove M. Reigstad, Marit Leu, Eva Arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics |
author_facet |
Kvernvik, Ane Cecilie Hoppe, Clara Jule Marie Greenacre, Michael Verbiest, Sander Wiktor, Józef Maria Gabrielsen, Tove M. Reigstad, Marit Leu, Eva |
author_sort |
Kvernvik, Ane Cecilie |
title |
Arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics |
title_short |
Arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics |
title_full |
Arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics |
title_fullStr |
Arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics |
title_full_unstemmed |
Arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics |
title_sort |
arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics |
publisher |
Inter-Research |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/24382 https://doi.org/10.3354/meps13675 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic ice algae Phytoplankton Sea ice |
genre_facet |
Arctic Arctic ice algae Phytoplankton Sea ice |
op_relation |
Marine Ecology Progress Series Kvernvik AC, Hoppe CJ, Greenacre M, Verbiest S, Wiktor JM, Gabrielsen TM, Reigstad M, Leu E. Arctic sea ice algae differ markedly from phytoplankton in their ecophysiological characteristics. Marine Ecology Progress Series. 2021;666:31-55 FRIDAID 1955327 doi:10.3354/meps13675 0171-8630 1616-1599 https://hdl.handle.net/10037/24382 |
op_rights |
openAccess Copyright 2021 Inter-Research |
op_doi |
https://doi.org/10.3354/meps13675 |
container_title |
Marine Ecology Progress Series |
container_volume |
666 |
container_start_page |
31 |
op_container_end_page |
55 |
_version_ |
1766298392633278464 |