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  • Alkalinity, Gran titration (Gran, 1950); Alkalinity, total; Aragonite saturation state; Bacteria; 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; CF1 subunit of ATP synthase protein; CF1 subunit of ATP synthase protein, standard deviation; Comment; Cyanobacteria; Effective absorbance cross-section of photosystem II; Effective absorbance cross-section of photosystem II, standard deviation; Electron transport rate of photosystem II, per cell; Electron transport rate of photosystem II, standard deviation; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Fluorescence, intrinsic; Fluorescence, intrinsic, standard deviation; Fluorescence, maximum; Fluorescence, maximum, standard deviation; Fluorescence, variable; Fluorescence, variable, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); GlnA subunit of Gln synthetase; GlnA subunit of Gln synthetase, standard deviation; Iron protein of nitrogenase; Iron protein of nitrogenase, standard deviation; Laboratory experiment; Laboratory strains; Light; Maximum photochemical quantum yield of photosystem II; Maximum photochemical quantum yield of photosystem II, standard deviation; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Open photosystem II reaction centers; Open photosystem II reaction centers, standard deviation; Other metabolic rates; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; Photosynthetic protein, PsbA, standard deviation; Photosynthetic protein, PsbC; Photosynthetic protein, PsbC, standard deviation; Photosynthetic protein PsbA; Photosynthetic protein Rubisco; Photosynthetic protein Rubisco, standard deviation; Phytoplankton; Primary production/Photosynthesis; Radiation, photosynthetically active; Salinity; see reference(s); Single species; Temperature, water; Time in hours; Trichodesmium sp.  (1)
  • Alkalinity, Gran titration (Gran, 1950); Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Calcite saturation state; Calculated; Calculated, see reference(s); Calculated after Freeman & Hayes (1992); Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, particulate, per cell; Carbon, inorganic, particulate, production per cell; Carbon, organic, particulate, per cell; Carbon, organic, particulate, production per cell; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, total; Carbon organic/inorganic ratio; Chromista; Colorimetry; Entire community; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Growth rate, carbon-specific, per cell; Haptophyta; Identification; Isotopic fractionation, during photosynthis; Laboratory experiment; Laboratory strains; Light; Light:Dark cycle; Mass spectrometer ANCA-SL 20-20 Europa Scientific; Mass spectrometer Finnigan MAT 252; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Open ocean; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH meter, WTW, pH 3000; Phytoplankton; Primary production/Photosynthesis; Radiation, photosynthetically active; RRZZ_00-02; Salinity; Single species; Temperate; Temperature, water; UIC 5012 coulometer; δ13C, carbon dioxide, atmospheric; δ13C, dissolved inorganic carbon; δ13C, particulate inorganic carbon; δ13C, particulate organic carbon  (1)
  • Alexandrium tamarense; Alkalinity, total; 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; Carbon, inorganic, dissolved, standard deviation; Carbon, organic, particulate, per cell; Carbon, organic, particulate, standard deviation; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Category; Cell density; Cellular paralytic shellfish toxin, total; Cellular paralytic shellfish toxin, total, standard deviation; Chromista; Coulometric titration; Di-sulfated toxins C1+C2; Di-sulfated toxins C1+C2, standard deviation; Figure; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gene abundance; Gene expression (incl. proteomics); Gonyautoxins 1/4; Gonyautoxins 1/4, standard deviation; Gonyautoxins 2/3; Gonyautoxins 2/3, standard deviation; Growth/Morphology; Growth rate; Growth rate, standard deviation; Immunology/Self-protection; Laboratory experiment; Laboratory strains; Myzozoa; Neosaxitoxin; Neosaxitoxin, standard deviation; Neurotoxin saxitoxin; Neurotoxin saxitoxin, standard deviation; Nitrogen, organic, particulate, per cell; Nitrogen, organic, particulate, standard deviation; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Particulate organic carbon, production, standard deviation; Particulate organic carbon production per cell; Pelagos; pH; pH, standard deviation; Phosphate; Phytoplankton; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Salinity; Single species; Species; Strain; Table; Temperature, water; Time in days; Toxicity, cellular; Toxicity, cellular, standard deviation
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  • 1
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    Unknown
    PANGAEA
    In:  Supplement to: Levitan, Orly; Kranz, Sven A; Spungin, D; Prasil, O; Rost, Björn; Beran-Frank, Ilana (2010): Combined effects of CO2 and light on the N2-fixing cyanobacterium Trichodesmium IMS101: A mechanistic view. Plant Physiology, 154, 346-356, https://doi.org/10.1104/pp.110.159285
    Publication Date: 2024-03-15
    Description: The marine diazotrophic cyanobacterium Trichodesmium responds to elevated atmospheric CO2 partial pressure (pCO2) with higher N2 fixation and growth rates. To unveil the underlying mechanisms, we examined the combined influence of pCO2(150 and 900 µatm) and light (50 and 200 µmol photons m-2 s-1) on TrichodesmiumIMS101. We expand on a complementary study that demonstrated that while elevated pCO2 enhanced N2 fixation and growth, oxygen evolution and carbon fixation increased mainly as a response to high light. Here, we investigated changes in the photosynthetic fluorescence parameters of photosystem II, in ratios of the photosynthetic units (photosystem I:photosystem II), and in the pool sizes of key proteins involved in the fixation of carbon and nitrogen as well as their subsequent assimilation. We show that the combined elevation in pCO2 and light controlled the operation of the CO2-concentrating mechanism and enhanced protein activity without increasing their pool size. Moreover, elevated pCO2 and high light decreased the amounts of several key proteins (NifH, PsbA, and PsaC), while amounts of AtpB and RbcL did not significantly change. Reduced investment in protein biosynthesis, without notably changing photosynthetic fluxes, could free up energy that can be reallocated to increase N2 fixation and growth at elevated pCO2 and light. We suggest that changes in the redox state of the photosynthetic electron transportchain and posttranslational regulation of key proteins mediate the high flexibility in resources and energy allocation in Trichodesmium. This strategy should enableTrichodesmium to flourish in future surface oceans characterized by elevated pCO2, higher temperatures, and high light.
    Keywords: Alkalinity, Gran titration (Gran, 1950); Alkalinity, total; Aragonite saturation state; Bacteria; 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; CF1 subunit of ATP synthase protein; CF1 subunit of ATP synthase protein, standard deviation; Comment; Cyanobacteria; Effective absorbance cross-section of photosystem II; Effective absorbance cross-section of photosystem II, standard deviation; Electron transport rate of photosystem II, per cell; Electron transport rate of photosystem II, standard deviation; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Fluorescence, intrinsic; Fluorescence, intrinsic, standard deviation; Fluorescence, maximum; Fluorescence, maximum, standard deviation; Fluorescence, variable; Fluorescence, variable, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); GlnA subunit of Gln synthetase; GlnA subunit of Gln synthetase, standard deviation; Iron protein of nitrogenase; Iron protein of nitrogenase, standard deviation; Laboratory experiment; Laboratory strains; Light; Maximum photochemical quantum yield of photosystem II; Maximum photochemical quantum yield of photosystem II, standard deviation; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Open photosystem II reaction centers; Open photosystem II reaction centers, standard deviation; Other metabolic rates; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; Photosynthetic protein, PsbA, standard deviation; Photosynthetic protein, PsbC; Photosynthetic protein, PsbC, standard deviation; Photosynthetic protein PsbA; Photosynthetic protein Rubisco; Photosynthetic protein Rubisco, standard deviation; Phytoplankton; Primary production/Photosynthesis; Radiation, photosynthetically active; Salinity; see reference(s); Single species; Temperature, water; Time in hours; Trichodesmium sp.
    Type: Dataset
    Format: text/tab-separated-values, 608 data points
    Location Call Number Limitation Availability
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  • 2
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    Unknown
    PANGAEA
    In:  Supplement to: Riebesell, Ulf; Zondervan, Ingrid; Rost, Björn; Tortell, Philippe Daniel; Zeebe, Richard E; Morel, Francois M M (2000): Reduced calcification of marine plankton in response to increased atmospheric CO2. Nature, 407, 364-367, https://doi.org/10.1038/35030078
    Publication Date: 2024-05-27
    Description: The formation of calcareous skeletons by marine planktonic organisms and their subsequent sinking to depth generates a continuous rain of calcium carbonate to the deep ocean and underlying sediments. This is important in regulating marine carbon cycling and ocean-atmosphere CO2 exchange. The present rise in atmospheric CO2 levels causes significant changes in surface ocean pH and carbonate chemistry. Such changes have been shown to slow down calcification in corals and coralline macroalgae, but the majority of marine calcification occurs in planktonic organisms. Here we report reduced calcite production at increased CO2 concentrations in monospecific cultures of two dominant marine calcifying phytoplankton species, the coccolithophorids Emiliania huxleyi and Gephyrocapsa oceanica . This was accompanied by an increased proportion of malformed coccoliths and incomplete coccospheres. Diminished calcification led to a reduction in the ratio of calcite precipitation to organic matter production. Similar results were obtained in incubations of natural plankton assemblages from the north Pacific ocean when exposed to experimentally elevated CO2 levels. We suggest that the progressive increase in atmospheric CO2 concentrations may therefore slow down the production of calcium carbonate in the surface ocean. As the process of calcification releases CO2 to the atmosphere, the response observed here could potentially act as a negative feedback on atmospheric CO2 levels.
    Keywords: Alkalinity, Gran titration (Gran, 1950); Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Calcite saturation state; Calculated; Calculated, see reference(s); Calculated after Freeman & Hayes (1992); Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, particulate, per cell; Carbon, inorganic, particulate, production per cell; Carbon, organic, particulate, per cell; Carbon, organic, particulate, production per cell; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, total; Carbon organic/inorganic ratio; Chromista; Colorimetry; Entire community; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Growth rate, carbon-specific, per cell; Haptophyta; Identification; Isotopic fractionation, during photosynthis; Laboratory experiment; Laboratory strains; Light; Light:Dark cycle; Mass spectrometer ANCA-SL 20-20 Europa Scientific; Mass spectrometer Finnigan MAT 252; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Open ocean; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH meter, WTW, pH 3000; Phytoplankton; Primary production/Photosynthesis; Radiation, photosynthetically active; RRZZ_00-02; Salinity; Single species; Temperate; Temperature, water; UIC 5012 coulometer; δ13C, carbon dioxide, atmospheric; δ13C, dissolved inorganic carbon; δ13C, particulate inorganic carbon; δ13C, particulate organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 1190 data points
    Location Call Number Limitation Availability
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