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  • Amino acids, dissolved hydrolyzable; Arctic Ocean, Central Basin; ARK-XXVII/3; Bacteria; BIOACID; Biological Impacts of Ocean Acidification; Carbon, organic, dissolved; Coomassie stainable particles; CT; DATE/TIME; DEPTH, water; Description; Event label; ICE; Ice station; Ice station #1; Ice station #2; LATITUDE; LONGITUDE; Polarstern; PS80/224-1; PS80/237-1; PS80/3-track; PS80 IceArc; Salinity; Sample code/label; Site; Slope ratio; Transparent exopolymer particles; Underway cruise track measurements; Uronic acids, dissolved  (1)
  • Bacteria; CDOM; Experiment day; inorganic particles; Microplastics; Optical density measurements; Replicate; Treatment  (1)
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  • 1
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    PANGAEA
    In:  Supplement to: Galgani, Luisa; Piontek, Judith; Engel, Anja (2016): Biopolymers form a gelatinous microlayer at the air-sea interface when Arctic sea ice melts. Scientific Reports, 6, 29465, https://doi.org/10.1038/srep29465
    Publication Date: 2023-05-12
    Description: The interface layer between ocean and atmosphere is only a couple of micrometers thick but plays a critical role in climate relevant processes, including the air-sea exchange of gas and heat and the emission of primary organic aerosols (POA). Recent findings suggest that low-level cloud formation above the Arctic Ocean may be linked to organic polymers produced by marine microorganisms. Sea ice harbors high amounts of polymeric substances that are produced by cells growing within the seaice brine. Here, we report from a research cruise to the central Arctic Ocean in 2012. Our study shows that microbial polymers accumulate at the air-sea interface when the sea ice melts. Proteinaceous compounds represented the major fraction of polymers supporting the formation of a gelatinous interface microlayer and providing a hitherto unrecognized potential source of marine POA. Our study indicates a novel link between sea ice-ocean and atmosphere that may be sensitive to climate change.
    Keywords: Amino acids, dissolved hydrolyzable; Arctic Ocean, Central Basin; ARK-XXVII/3; Bacteria; BIOACID; Biological Impacts of Ocean Acidification; Carbon, organic, dissolved; Coomassie stainable particles; CT; DATE/TIME; DEPTH, water; Description; Event label; ICE; Ice station; Ice station #1; Ice station #2; LATITUDE; LONGITUDE; Polarstern; PS80/224-1; PS80/237-1; PS80/3-track; PS80 IceArc; Salinity; Sample code/label; Site; Slope ratio; Transparent exopolymer particles; Underway cruise track measurements; Uronic acids, dissolved
    Type: Dataset
    Format: text/tab-separated-values, 567 data points
    Location Call Number Expected Availability
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  • 2
    Publication Date: 2023-10-28
    Description: The present dataset relates to a study that explored dissolved organic matter dynamics under three scenarios: a particle-free environment, a particle-enriched system with polystyrene microplastics, and a particle-enriched system with inorganic particles (water insoluble SiO₂). In part 1 of the experiment, natural marine organic matter was obtained by culturing a non-axenic strain of Chaetoceros socialis in 2 L flasks under each of three scenarios (1C = control, 2PS = polystyrene, 3S = silica). After the growth phase, filtered samples from the three flasks containing dissolved organic matter and bacteria were incubated separately in the dark in 4 replicates closed quartz cuvettes per treatment (total = 12 cuvettes, 28 mL capacity quartz cuvettes 10 cm path length, Hellma 120-QS, Quartz SUPRASIL, Hellma Analytics) at a temperature of of 20 °C ± 2 °C for 5 days. This dataset reports cell numbers measured by optical density in each of the three culturing flasks, three replicate measurements per flask..
    Keywords: Bacteria; CDOM; Experiment day; inorganic particles; Microplastics; Optical density measurements; Replicate; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 359 data points
    Location Call Number Expected Availability
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