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  • (Diadinoxanthin + Diatoxanthin)/chlorophyll a ratio; (Diadinoxanthin + Diatoxanthin)/chlorophyll a ratio, standard deviation; Abundance; Alkalinity, total; Alkalinity, total, standard deviation; Antarctic; 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; Carbon, inorganic, dissolved, standard deviation; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cell density; Cell density, standard deviation; Chlorophyll a/particulate organic carbon ratio; Chlorophyll a/particulate organic carbon ratio, standard deviation; Community composition and diversity; Entire community; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Growth rate, standard deviation; Laboratory experiment; Light; Net primary production of carbon per particulate organic carbon; OA-ICC; Ocean Acidification International Coordination Centre; Open ocean; 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; Pelagos; pH; pH, standard deviation; Phosphate; Polar; Primary production/Photosynthesis; Primary production of carbon, standard deviation; Rothera_OA; Salinity; Silicate; Silicate, standard deviation; Species; Temperature, water; Thymidine uptake rate, standard deviation; Time point, descriptive; Treatment; Type  (1)
  • ANT-XXVIII/3; Area/locality; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Elevation of event; Event label; Latitude of event; Longitude of event; Nitrate; Nitrate/Phosphate deficit ratio; Nitrate deficit, integrated; Phosphate; Phosphate deficit, integrated; Polarstern; PS79; PS79/085-3; PS79/086-2; PS79/087-2; PS79/088-1; PS79/092-1; PS79/093-1; PS79/095-3; PS79/096-1; PS79/101-1; PS79/102-1; PS79/103-1; PS79/104-1; PS79/105-1; PS79/106-1; PS79/107-1; PS79/108-1; PS79/109-1; PS79/110-1; PS79/111-1; PS79/112-1; PS79/114-2; PS79/115-1; PS79/116-1; PS79/117-1; PS79/118-1; PS79/119-3; PS79/120-1; PS79/121-1; PS79/122-2; PS79/123-1; PS79/124-1; PS79/125-1; PS79/126-1; PS79/127-2; PS79/128-10; PS79/137-7; PS79/144-2; PS79/145-1; PS79/146-1; PS79/147-1; PS79/148-1; PS79/149-1; PS79/150-1; PS79/151-1; PS79/152-1; PS79/153-1; PS79/154-1; PS79/155-1; PS79/156-1; PS79/157-1; PS79/158-1; PS79/159-1; PS79/160-1; PS79/161-1; PS79/162-2; PS79/163-1; PS79/164-1; PS79/165-5; PS79/166-1; PS79/167-1; PS79/168-1; PS79/169-1; PS79/170-1; PS79/171-1; PS79/172-1; PS79/173-1; Silicate; Silicate/Nitrate deficite ratio; Silicate deficit, integrated; South Atlantic Ocean  (1)
  • Abundance; Abundance, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Antarctic; Aragonite saturation state; Bicarbonate ion; Biogenic particulate silica/Carbon, organic, particulate; Biogenic particulate silica/Carbon, organic, particulate, standard deviation; Biomass/Abundance/Elemental composition; 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, net production; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cell density; Cell density, standard deviation; Community composition and diversity; Entire community; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth rate; Growth rate, standard deviation; Iron, chemically labile; Iron, dissolved; Iron, dissolved, inorganic; Iron, dissolved, standard deviation; Iron, inorganic, conditional stability constants; Iron, inorganic, conditional stability constants, standard deviation; Iron uptake/Carbon, organic, particulate; Iron uptake/Carbon, organic, particulate, standard deviation; Laboratory experiment; Ligand concentration; Ligand concentration, standard deviation; Maximum photochemical quantum yield of photosystem II; Maximum photochemical quantum yield of photosystem II, standard deviation; Micro-nutrients; Nitrate; Nitrate, standard deviation; OA-ICC; Ocean Acidification International Coordination Centre; Open ocean; Other metabolic rates; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Particulate inorganic carbon per cell; Pelagos; pH; pH, standard deviation; Polar; Polar_front; Primary production/Photosynthesis; Salinity; Side coefficient of dissolved Fe-complex ligands; Temperature, water; Time in days; Time point, descriptive; Treatment; Type  (1)
Document type
Keywords
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  • 1
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    Unknown
    Seawater carbonate chemistry and productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula (2019)
    PANGAEA
    In:  Supplement to: Heiden, Jasmin; Völkner, Christian; Jones, Elizabeth M; van De Poll, Willem H; Buma, Anita G J; Meredith, Michael P; de Baar, Hein J W; Bischof, Kai; Wolf-Gladrow, Dieter A; Trimborn, Scarlett (2019): Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula. Limnology and Oceanography, 64(4), 1716-1736, https://doi.org/10.1002/lno.11147
    Details
    Publication Date: 2024-03-18
    Description: The Western Antarctic Peninsula (WAP), one of the most productive regions of the Southern Ocean, is currently undergoing rapid environmental changes such as ocean acidification (OA) and increased daily irradiances from enhanced surface‐water stratification. To assess the potential for future biological CO2 sequestration of this region, we incubated a natural phytoplankton assemblage from Ryder Bay, WAP, under a range of pCO2 levels (180 μatm, 450 μatm, and 1000 μatm) combined with either moderate or high natural solar radiation (MSR: 124 μmol photons/m**2/s and HSR: 435 μmol photons/ m**2/s, respectively). The initial and final phytoplankton communities were numerically dominated by the prymnesiophyte Phaeocystis antarctica, with the single cells initially being predominant and solitary and colonial cells reaching similar high abundances by the end. Only when communities were grown under ambient pCO2 in conjunction with HSR did the small diatom Fragilariopsis pseudonana outcompete P. antarctica at the end of the experiment. Such positive light‐dependent growth response of the diatom was, however, dampened by OA. These changes in community composition were caused by an enhanced photosensitivity of diatoms, especially F. pseudonana, under OA and HSR, reducing thereby their competitiveness toward P. antarctica. Moreover, community primary production (PP) of all treatments yielded similar high rates at the start and the end of the experiment, but with the main contributors shifting from initially large to small cells toward the end. Even though community PP of Ryder Bay phytoplankton was insensitive to the changes in light and CO2 availability, the observed size‐dependent shift in productivity could, however, weaken the biological CO2 sequestration potential of this region in the future.
    Keywords: (Diadinoxanthin + Diatoxanthin)/chlorophyll a ratio; (Diadinoxanthin + Diatoxanthin)/chlorophyll a ratio, standard deviation; Abundance; Alkalinity, total; Alkalinity, total, standard deviation; Antarctic; 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; Carbon, inorganic, dissolved, standard deviation; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cell density; Cell density, standard deviation; Chlorophyll a/particulate organic carbon ratio; Chlorophyll a/particulate organic carbon ratio, standard deviation; Community composition and diversity; Entire community; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Growth rate, standard deviation; Laboratory experiment; Light; Net primary production of carbon per particulate organic carbon; OA-ICC; Ocean Acidification International Coordination Centre; Open ocean; 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; Pelagos; pH; pH, standard deviation; Phosphate; Polar; Primary production/Photosynthesis; Primary production of carbon, standard deviation; Rothera_OA; Salinity; Silicate; Silicate, standard deviation; Species; Temperature, water; Thymidine uptake rate, standard deviation; Time point, descriptive; Treatment; Type
    Type: Dataset
    Format: text/tab-separated-values, 3185 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Seawater carbonate chemistry and Southern Ocean phytoplankton community characterization and iron uptake (2017)
    PANGAEA
    In:  Supplement to: Trimborn, Scarlett; Brenneis, Tina; Hoppe, Clara Jule Marie; Laglera, Luis Miguel; Norman, Louiza; Santos-Echeandía, Juan; Völkner, Christian; Wolf-Gladrow, Dieter A; Hassler, Christel S (2017): Iron sources alter the response of Southern Ocean phytoplankton to ocean acidification. Marine Ecology Progress Series, 578, 35-50, https://doi.org/10.3354/meps12250
    Details
    Publication Date: 2024-03-15
    Description: The rise in anthropogenic CO2 and the associated ocean acidification (OA) will change trace metal solubility and speciation, potentially altering Southern Ocean (SO) phytoplankton productivity and species composition. As iron (Fe) sources are important determinants of Fe bioavailability, we assessed the effect of Fe-laden dust versus inorganic Fe (FeCl3) enrichment under ambient and high pCO2 levels (390 and 900 μatm) in a naturally Fe-limited SO phytoplankton community. Despite similar Fe chemical speciation and net particulate organic carbon (POC) production rates, CO2-dependent species shifts were controlled by Fe sources. Final phytoplankton communities of both control and dust treatments were dominated by the same species, with an OA-dependent shift from the diatom Pseudo nitzschia prolongatoides towards the prymnesiophyte Phaeocystis antarctica. Addition of FeCl3 resulted in high abundances of Nitzschia lecointei and Chaetoceros neogracilis under ambient and high pCO2, respectively. These findings reveal that both the characterization of the phytoplankton community at the species level and the use of natural Fe sources are essential for a realistic projection of the biological carbon pump in the Fe-limited pelagic SO under OA. As dust deposition represents a more realistic scenario for the Fe-limited pelagic SO under OA, unaffected net POC production and dominance of P. antarctica can potentially weaken the export of carbon and silica in the future.
    Keywords: Abundance; Abundance, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Antarctic; Aragonite saturation state; Bicarbonate ion; Biogenic particulate silica/Carbon, organic, particulate; Biogenic particulate silica/Carbon, organic, particulate, standard deviation; Biomass/Abundance/Elemental composition; 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, net production; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cell density; Cell density, standard deviation; Community composition and diversity; Entire community; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth rate; Growth rate, standard deviation; Iron, chemically labile; Iron, dissolved; Iron, dissolved, inorganic; Iron, dissolved, standard deviation; Iron, inorganic, conditional stability constants; Iron, inorganic, conditional stability constants, standard deviation; Iron uptake/Carbon, organic, particulate; Iron uptake/Carbon, organic, particulate, standard deviation; Laboratory experiment; Ligand concentration; Ligand concentration, standard deviation; Maximum photochemical quantum yield of photosystem II; Maximum photochemical quantum yield of photosystem II, standard deviation; Micro-nutrients; Nitrate; Nitrate, standard deviation; OA-ICC; Ocean Acidification International Coordination Centre; Open ocean; Other metabolic rates; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Particulate inorganic carbon per cell; Pelagos; pH; pH, standard deviation; Polar; Polar_front; Primary production/Photosynthesis; Salinity; Side coefficient of dissolved Fe-complex ligands; Temperature, water; Time in days; Time point, descriptive; Treatment; Type
    Type: Dataset
    Format: text/tab-separated-values, 4906 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Unknown
    Averaged nutrient concentrations during POLARSTERN cruise ANT-XXVIII/2 (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-25
    Keywords: ANT-XXVIII/3; Area/locality; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Elevation of event; Event label; Latitude of event; Longitude of event; Nitrate; Nitrate/Phosphate deficit ratio; Nitrate deficit, integrated; Phosphate; Phosphate deficit, integrated; Polarstern; PS79; PS79/085-3; PS79/086-2; PS79/087-2; PS79/088-1; PS79/092-1; PS79/093-1; PS79/095-3; PS79/096-1; PS79/101-1; PS79/102-1; PS79/103-1; PS79/104-1; PS79/105-1; PS79/106-1; PS79/107-1; PS79/108-1; PS79/109-1; PS79/110-1; PS79/111-1; PS79/112-1; PS79/114-2; PS79/115-1; PS79/116-1; PS79/117-1; PS79/118-1; PS79/119-3; PS79/120-1; PS79/121-1; PS79/122-2; PS79/123-1; PS79/124-1; PS79/125-1; PS79/126-1; PS79/127-2; PS79/128-10; PS79/137-7; PS79/144-2; PS79/145-1; PS79/146-1; PS79/147-1; PS79/148-1; PS79/149-1; PS79/150-1; PS79/151-1; PS79/152-1; PS79/153-1; PS79/154-1; PS79/155-1; PS79/156-1; PS79/157-1; PS79/158-1; PS79/159-1; PS79/160-1; PS79/161-1; PS79/162-2; PS79/163-1; PS79/164-1; PS79/165-5; PS79/166-1; PS79/167-1; PS79/168-1; PS79/169-1; PS79/170-1; PS79/171-1; PS79/172-1; PS79/173-1; Silicate; Silicate/Nitrate deficite ratio; Silicate deficit, integrated; South Atlantic Ocean
    Type: Dataset
    Format: text/tab-separated-values, 580 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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