Seawater carbonate chemistry and specific growth rate, respiration rate, net photosynthetic rate and photochemical parameters of Phaeodactylum tricornutum
Experimentally elevated pCO2 and the associated pH drop are known to differentially affect many aspects of the physiology of diatoms under different environmental conditions or in different regions. However, contrasting responses to elevated pCO2 in the dark and light periods of a diel cycle have no...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.939406 2024-09-15T18:28:22+00:00 Seawater carbonate chemistry and specific growth rate, respiration rate, net photosynthetic rate and photochemical parameters of Phaeodactylum tricornutum Qu, Liming Beardall, John Jiang, Xiaowen Gao, Kunshan 2021 text/tab-separated-values, 3030 data points https://doi.pangaea.de/10.1594/PANGAEA.939406 https://doi.org/10.1594/PANGAEA.939406 en eng PANGAEA Qu, Liming; Beardall, John; Jiang, Xiaowen; Gao, Kunshan (2021): Elevated pCO2 enhances under light but reduces in darkness the growth rate of a diatom, with implications for the fate of phytoplankton below the photic zone. Limnology and Oceanography, 66(10), 3630-3642, https://doi.org/10.1002/lno.11903 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2021): seacarb: seawater carbonate chemistry with R. R package version 3.2.16. https://cran.r-project.org/web/packages/seacarb/index.html https://doi.pangaea.de/10.1594/PANGAEA.939406 https://doi.org/10.1594/PANGAEA.939406 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess Alkalinity total standard deviation Aragonite saturation state Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Carotenoids Carotenoids/Chlorophyll a ratio Carotenoids per cell Cell diameter Chlorophyll a Chlorophyll a per cell Chromista Effective photochemical quantum yield Electron transport rate relative Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate dataset 2021 ftpangaea https://doi.org/10.1594/PANGAEA.93940610.1002/lno.11903 2024-07-24T02:31:34Z Experimentally elevated pCO2 and the associated pH drop are known to differentially affect many aspects of the physiology of diatoms under different environmental conditions or in different regions. However, contrasting responses to elevated pCO2 in the dark and light periods of a diel cycle have not been documented. By growing the model diatom Phaeodactylum tricornutum under 3 light levels and 2 different CO2 concentrations, we found that the elevated pCO2/pH drop projected for future ocean acidification reduced the diatom's growth rate by 8–25% during the night period but increased it by up to 9–21% in the light period, resulting in insignificant changes in growth over the diel cycle under the three different light levels. The elevated pCO2 increased the respiration rates irrespective of growth light levels and light or dark periods and enhanced its photosynthetic performance during daytime. With prolonged exposure to complete darkness, simulating the sinking process in the dark zones of the ocean, the growth rates decreased faster under elevated pCO2, along with a faster decline in quantum yield and cell size. Our results suggest that elevated pCO2 enhances the diatom's respiratory energy supplies to cope with acidic stress during the night period but enhances its death rate when the cells sink to dark regions of the oceans below the photic zone, with implications for a possible acidification-induced reduction in vertical transport of organic carbon. Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science |
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Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total standard deviation Aragonite saturation state Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Carotenoids Carotenoids/Chlorophyll a ratio Carotenoids per cell Cell diameter Chlorophyll a Chlorophyll a per cell Chromista Effective photochemical quantum yield Electron transport rate relative Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate |
spellingShingle |
Alkalinity total standard deviation Aragonite saturation state Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Carotenoids Carotenoids/Chlorophyll a ratio Carotenoids per cell Cell diameter Chlorophyll a Chlorophyll a per cell Chromista Effective photochemical quantum yield Electron transport rate relative Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate Qu, Liming Beardall, John Jiang, Xiaowen Gao, Kunshan Seawater carbonate chemistry and specific growth rate, respiration rate, net photosynthetic rate and photochemical parameters of Phaeodactylum tricornutum |
topic_facet |
Alkalinity total standard deviation Aragonite saturation state Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Carotenoids Carotenoids/Chlorophyll a ratio Carotenoids per cell Cell diameter Chlorophyll a Chlorophyll a per cell Chromista Effective photochemical quantum yield Electron transport rate relative Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate |
description |
Experimentally elevated pCO2 and the associated pH drop are known to differentially affect many aspects of the physiology of diatoms under different environmental conditions or in different regions. However, contrasting responses to elevated pCO2 in the dark and light periods of a diel cycle have not been documented. By growing the model diatom Phaeodactylum tricornutum under 3 light levels and 2 different CO2 concentrations, we found that the elevated pCO2/pH drop projected for future ocean acidification reduced the diatom's growth rate by 8–25% during the night period but increased it by up to 9–21% in the light period, resulting in insignificant changes in growth over the diel cycle under the three different light levels. The elevated pCO2 increased the respiration rates irrespective of growth light levels and light or dark periods and enhanced its photosynthetic performance during daytime. With prolonged exposure to complete darkness, simulating the sinking process in the dark zones of the ocean, the growth rates decreased faster under elevated pCO2, along with a faster decline in quantum yield and cell size. Our results suggest that elevated pCO2 enhances the diatom's respiratory energy supplies to cope with acidic stress during the night period but enhances its death rate when the cells sink to dark regions of the oceans below the photic zone, with implications for a possible acidification-induced reduction in vertical transport of organic carbon. |
format |
Dataset |
author |
Qu, Liming Beardall, John Jiang, Xiaowen Gao, Kunshan |
author_facet |
Qu, Liming Beardall, John Jiang, Xiaowen Gao, Kunshan |
author_sort |
Qu, Liming |
title |
Seawater carbonate chemistry and specific growth rate, respiration rate, net photosynthetic rate and photochemical parameters of Phaeodactylum tricornutum |
title_short |
Seawater carbonate chemistry and specific growth rate, respiration rate, net photosynthetic rate and photochemical parameters of Phaeodactylum tricornutum |
title_full |
Seawater carbonate chemistry and specific growth rate, respiration rate, net photosynthetic rate and photochemical parameters of Phaeodactylum tricornutum |
title_fullStr |
Seawater carbonate chemistry and specific growth rate, respiration rate, net photosynthetic rate and photochemical parameters of Phaeodactylum tricornutum |
title_full_unstemmed |
Seawater carbonate chemistry and specific growth rate, respiration rate, net photosynthetic rate and photochemical parameters of Phaeodactylum tricornutum |
title_sort |
seawater carbonate chemistry and specific growth rate, respiration rate, net photosynthetic rate and photochemical parameters of phaeodactylum tricornutum |
publisher |
PANGAEA |
publishDate |
2021 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.939406 https://doi.org/10.1594/PANGAEA.939406 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Qu, Liming; Beardall, John; Jiang, Xiaowen; Gao, Kunshan (2021): Elevated pCO2 enhances under light but reduces in darkness the growth rate of a diatom, with implications for the fate of phytoplankton below the photic zone. Limnology and Oceanography, 66(10), 3630-3642, https://doi.org/10.1002/lno.11903 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2021): seacarb: seawater carbonate chemistry with R. R package version 3.2.16. https://cran.r-project.org/web/packages/seacarb/index.html https://doi.pangaea.de/10.1594/PANGAEA.939406 https://doi.org/10.1594/PANGAEA.939406 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.93940610.1002/lno.11903 |
_version_ |
1810469718673326080 |