Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance
The Arctic Ocean is a region particularly prone to ongoing ocean acidification (OA) and climate-driven changes. The influence of these changes on Arctic phytoplankton assemblages, however, remains poorly understood. In order to understand how OA and enhanced irradiances (e.g., resulting from sea–ice...
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ftpubmed:oai:pubmedcentral.nih.gov:6952045 2023-05-15T14:48:22+02:00 Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance Hoppe, C. J. M. Schuback, N. Semeniuk, D. Giesbrecht, K. Mol, J. Thomas, H. Maldonado, M. T. Rost, B. Varela, D. E. Tortell, P. D. 2017-08-09 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6952045/ https://doi.org/10.1007/s00300-017-2186-0 en eng Springer Berlin Heidelberg http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6952045/ http://dx.doi.org/10.1007/s00300-017-2186-0 © The Author(s) 2017 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 2017 ftpubmed https://doi.org/10.1007/s00300-017-2186-0 2020-01-26T01:18:45Z The Arctic Ocean is a region particularly prone to ongoing ocean acidification (OA) and climate-driven changes. The influence of these changes on Arctic phytoplankton assemblages, however, remains poorly understood. In order to understand how OA and enhanced irradiances (e.g., resulting from sea–ice retreat) will alter the species composition, primary production, and eco-physiology of Arctic phytoplankton, we conducted an incubation experiment with an assemblage from Baffin Bay (71°N, 68°W) under different carbonate chemistry and irradiance regimes. Seawater was collected from just below the deep Chl a maximum, and the resident phytoplankton were exposed to 380 and 1000 µatm pCO(2) at both 15 and 35% incident irradiance. On-deck incubations, in which temperatures were 6 °C above in situ conditions, were monitored for phytoplankton growth, biomass stoichiometry, net primary production, photo-physiology, and taxonomic composition. During the 8-day experiment, taxonomic diversity decreased and the diatom Chaetoceros socialis became increasingly dominant irrespective of light or CO(2) levels. We found no statistically significant effects from either higher CO(2) or light on physiological properties of phytoplankton during the experiment. We did, however, observe an initial 2-day stress response in all treatments, and slight photo-physiological responses to higher CO(2) and light during the first five days of the incubation. Our results thus indicate high resistance of Arctic phytoplankton to OA and enhanced irradiance levels, challenging the commonly predicted stimulatory effects of enhanced CO(2) and light availability for primary production. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00300-017-2186-0) contains supplementary material, which is available to authorized users. Text Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Ocean acidification Phytoplankton Sea ice PubMed Central (PMC) Arctic Arctic Ocean Baffin Bay Polar Biology 41 3 399 413 |
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English |
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Original Paper |
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Original Paper Hoppe, C. J. M. Schuback, N. Semeniuk, D. Giesbrecht, K. Mol, J. Thomas, H. Maldonado, M. T. Rost, B. Varela, D. E. Tortell, P. D. Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance |
topic_facet |
Original Paper |
description |
The Arctic Ocean is a region particularly prone to ongoing ocean acidification (OA) and climate-driven changes. The influence of these changes on Arctic phytoplankton assemblages, however, remains poorly understood. In order to understand how OA and enhanced irradiances (e.g., resulting from sea–ice retreat) will alter the species composition, primary production, and eco-physiology of Arctic phytoplankton, we conducted an incubation experiment with an assemblage from Baffin Bay (71°N, 68°W) under different carbonate chemistry and irradiance regimes. Seawater was collected from just below the deep Chl a maximum, and the resident phytoplankton were exposed to 380 and 1000 µatm pCO(2) at both 15 and 35% incident irradiance. On-deck incubations, in which temperatures were 6 °C above in situ conditions, were monitored for phytoplankton growth, biomass stoichiometry, net primary production, photo-physiology, and taxonomic composition. During the 8-day experiment, taxonomic diversity decreased and the diatom Chaetoceros socialis became increasingly dominant irrespective of light or CO(2) levels. We found no statistically significant effects from either higher CO(2) or light on physiological properties of phytoplankton during the experiment. We did, however, observe an initial 2-day stress response in all treatments, and slight photo-physiological responses to higher CO(2) and light during the first five days of the incubation. Our results thus indicate high resistance of Arctic phytoplankton to OA and enhanced irradiance levels, challenging the commonly predicted stimulatory effects of enhanced CO(2) and light availability for primary production. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00300-017-2186-0) contains supplementary material, which is available to authorized users. |
format |
Text |
author |
Hoppe, C. J. M. Schuback, N. Semeniuk, D. Giesbrecht, K. Mol, J. Thomas, H. Maldonado, M. T. Rost, B. Varela, D. E. Tortell, P. D. |
author_facet |
Hoppe, C. J. M. Schuback, N. Semeniuk, D. Giesbrecht, K. Mol, J. Thomas, H. Maldonado, M. T. Rost, B. Varela, D. E. Tortell, P. D. |
author_sort |
Hoppe, C. J. M. |
title |
Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance |
title_short |
Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance |
title_full |
Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance |
title_fullStr |
Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance |
title_full_unstemmed |
Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance |
title_sort |
resistance of arctic phytoplankton to ocean acidification and enhanced irradiance |
publisher |
Springer Berlin Heidelberg |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6952045/ https://doi.org/10.1007/s00300-017-2186-0 |
geographic |
Arctic Arctic Ocean Baffin Bay |
geographic_facet |
Arctic Arctic Ocean Baffin Bay |
genre |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Ocean acidification Phytoplankton Sea ice |
genre_facet |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Ocean acidification Phytoplankton Sea ice |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6952045/ http://dx.doi.org/10.1007/s00300-017-2186-0 |
op_rights |
© The Author(s) 2017 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/s00300-017-2186-0 |
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Polar Biology |
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41 |
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3 |
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399 |
op_container_end_page |
413 |
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1766319457504854016 |