Ocean acidification as one of multiple stressors: growth response of Thalassiosira weissflogii (diatom) under temperature and light stress
Shifts in phytoplankton composition and productivity are anticipated in the future, because phytoplankton are frequently bottom-up controlled, and environmental conditions, like temperature, partial pressure of CO2 (pCO2), and light climate continue to change. Culture experiments revealed that where...
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Language: | English |
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PANGAEA
2015
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.868435 https://doi.org/10.1594/PANGAEA.868435 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.868435 |
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openpolar |
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Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total Aragonite saturation state Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved organic particulate per cell Carbon/Nitrogen ratio Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a/carbon ratio Chlorophyll a per cell Chromista Colorimetric Dry mass per cell Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate Identification Irradiance Laboratory experiment Laboratory strains Light Nitrogen Not applicable OA-ICC Ocean Acidification International Coordination Centre Ochrophyta Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phytoplankton Potentiometric titration Registration number of species Salinity Single species Species Spectrophotometric |
spellingShingle |
Alkalinity total Aragonite saturation state Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved organic particulate per cell Carbon/Nitrogen ratio Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a/carbon ratio Chlorophyll a per cell Chromista Colorimetric Dry mass per cell Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate Identification Irradiance Laboratory experiment Laboratory strains Light Nitrogen Not applicable OA-ICC Ocean Acidification International Coordination Centre Ochrophyta Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phytoplankton Potentiometric titration Registration number of species Salinity Single species Species Spectrophotometric Passow, Uta Laws, Edward A Ocean acidification as one of multiple stressors: growth response of Thalassiosira weissflogii (diatom) under temperature and light stress |
topic_facet |
Alkalinity total Aragonite saturation state Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved organic particulate per cell Carbon/Nitrogen ratio Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a/carbon ratio Chlorophyll a per cell Chromista Colorimetric Dry mass per cell Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate Identification Irradiance Laboratory experiment Laboratory strains Light Nitrogen Not applicable OA-ICC Ocean Acidification International Coordination Centre Ochrophyta Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phytoplankton Potentiometric titration Registration number of species Salinity Single species Species Spectrophotometric |
description |
Shifts in phytoplankton composition and productivity are anticipated in the future, because phytoplankton are frequently bottom-up controlled, and environmental conditions, like temperature, partial pressure of CO2 (pCO2), and light climate continue to change. Culture experiments revealed that whereas future (elevated) pCO2 had no effect on T. weissflogii in the absence of environmental stressors, growth rate was drastically decreased under future pCO2 if cells grew under light and temperature stress. The reduction in growth rates and a smaller decline in cellular photosynthesis under high pCO2 were associated with 2- to 3-fold increases in the production of transparent exopolymer particles (TEP), in the cell quotas of organic carbon, and the chl a:C ratios. Results suggest that under light- and temperature-stressed growth, elevated pCO2 led to increased energy requirements, which were fulfilled by increased light harvesting capabilities that permitted photosynthesis of acclimatized cells to remain relatively high. This was combined with the inability of these cells to acclimatize their growth rate to sub-optimal temperatures. As a consequence, growth rate was low and decoupled from photosynthesis. This decoupling led to large cell sizes and high excretion rates in future pCO2 treatments compared to ambient treatments if growth temperature and light were sub-optimal. Under optimal growth conditions the increased energy demands required to re-equilibrate the disturbed acid-base balance in future pCO2 treatments were likely mediated by a variety of physiological acclimatization mechanisms, individually too small to show a statistically detectable response in terms of growth rate, photosynthesis, pigment concentration, or excretion. |
format |
Dataset |
author |
Passow, Uta Laws, Edward A |
author_facet |
Passow, Uta Laws, Edward A |
author_sort |
Passow, Uta |
title |
Ocean acidification as one of multiple stressors: growth response of Thalassiosira weissflogii (diatom) under temperature and light stress |
title_short |
Ocean acidification as one of multiple stressors: growth response of Thalassiosira weissflogii (diatom) under temperature and light stress |
title_full |
Ocean acidification as one of multiple stressors: growth response of Thalassiosira weissflogii (diatom) under temperature and light stress |
title_fullStr |
Ocean acidification as one of multiple stressors: growth response of Thalassiosira weissflogii (diatom) under temperature and light stress |
title_full_unstemmed |
Ocean acidification as one of multiple stressors: growth response of Thalassiosira weissflogii (diatom) under temperature and light stress |
title_sort |
ocean acidification as one of multiple stressors: growth response of thalassiosira weissflogii (diatom) under temperature and light stress |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.868435 https://doi.org/10.1594/PANGAEA.868435 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Passow, Uta; Laws, Edward A (2015): Ocean acidification as one of multiple stressors: growth response of Thalassiosira weissflogii (diatom) under temperature and light stress. Marine Ecology Progress Series, 541, 75-90, https://doi.org/10.3354/meps11541 Passow, Uta; Laws, Edward A (2015): Series 5: pCO2 as one of multiple stressors for Thalassiosira weissflogii. Woods Hp;e Open Access Server, https://doi.org/10.1575/1912/7689 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse (2015): seacarb: seawater carbonate chemistry with R. R package version 3.0.8. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.868435 https://doi.org/10.1594/PANGAEA.868435 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.868435 https://doi.org/10.3354/meps11541 https://doi.org/10.1575/1912/7689 |
_version_ |
1766158267621310464 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.868435 2023-05-15T17:51:12+02:00 Ocean acidification as one of multiple stressors: growth response of Thalassiosira weissflogii (diatom) under temperature and light stress Passow, Uta Laws, Edward A 2015-11-16 text/tab-separated-values, 3762 data points https://doi.pangaea.de/10.1594/PANGAEA.868435 https://doi.org/10.1594/PANGAEA.868435 en eng PANGAEA Passow, Uta; Laws, Edward A (2015): Ocean acidification as one of multiple stressors: growth response of Thalassiosira weissflogii (diatom) under temperature and light stress. Marine Ecology Progress Series, 541, 75-90, https://doi.org/10.3354/meps11541 Passow, Uta; Laws, Edward A (2015): Series 5: pCO2 as one of multiple stressors for Thalassiosira weissflogii. Woods Hp;e Open Access Server, https://doi.org/10.1575/1912/7689 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse (2015): seacarb: seawater carbonate chemistry with R. R package version 3.0.8. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.868435 https://doi.org/10.1594/PANGAEA.868435 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Alkalinity total Aragonite saturation state Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved organic particulate per cell Carbon/Nitrogen ratio Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a/carbon ratio Chlorophyll a per cell Chromista Colorimetric Dry mass per cell Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate Identification Irradiance Laboratory experiment Laboratory strains Light Nitrogen Not applicable OA-ICC Ocean Acidification International Coordination Centre Ochrophyta Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phytoplankton Potentiometric titration Registration number of species Salinity Single species Species Spectrophotometric Dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.868435 https://doi.org/10.3354/meps11541 https://doi.org/10.1575/1912/7689 2023-01-20T09:08:10Z Shifts in phytoplankton composition and productivity are anticipated in the future, because phytoplankton are frequently bottom-up controlled, and environmental conditions, like temperature, partial pressure of CO2 (pCO2), and light climate continue to change. Culture experiments revealed that whereas future (elevated) pCO2 had no effect on T. weissflogii in the absence of environmental stressors, growth rate was drastically decreased under future pCO2 if cells grew under light and temperature stress. The reduction in growth rates and a smaller decline in cellular photosynthesis under high pCO2 were associated with 2- to 3-fold increases in the production of transparent exopolymer particles (TEP), in the cell quotas of organic carbon, and the chl a:C ratios. Results suggest that under light- and temperature-stressed growth, elevated pCO2 led to increased energy requirements, which were fulfilled by increased light harvesting capabilities that permitted photosynthesis of acclimatized cells to remain relatively high. This was combined with the inability of these cells to acclimatize their growth rate to sub-optimal temperatures. As a consequence, growth rate was low and decoupled from photosynthesis. This decoupling led to large cell sizes and high excretion rates in future pCO2 treatments compared to ambient treatments if growth temperature and light were sub-optimal. Under optimal growth conditions the increased energy demands required to re-equilibrate the disturbed acid-base balance in future pCO2 treatments were likely mediated by a variety of physiological acclimatization mechanisms, individually too small to show a statistically detectable response in terms of growth rate, photosynthesis, pigment concentration, or excretion. Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science |