Seawater carbonate chemistry and lipid dynamics of Arctic pteropods (Limacina spp., Thecosomata) ...

• Main Authors: Lischka, Silke, Greenacre, Michael J, Riebesell, Ulf, Graeve, Martin
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Animalia; Arctic; Bottles or small containers/Aquaria <20 L; Laboratory experiment; Limacina helicina; Mollusca; Open ocean; Other studied parameter or process; Pelagos; Polar; Single species; Temperature; Zooplankton; Type; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Sample code/label; Treatment; Treatment temperature; Temperature, water; Treatment partial pressure of carbon dioxide; Partial pressure of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon dioxide; Carbon, inorganic, dissolved; pH; Aragonite saturation state; Salinity; Silicate; Alkalinity, total; Replicate; Saturated fatty acids of total fatty acid groups; Monounsaturated fatty acids of total fatty acids; Polyunsaturated fatty acids of total fatty acids; Fatty acid of total lipids; Fatty alcohol of total lipids; Lipids, total per individuum; Wax esters; Triacylglycerols; Sterols; Fatty acids, free; Phosphatidylethanolamine; Phosphatidylinositol; Phosphatidylserine; Cardiolipin; Phosphatidylcholine; Phospholipids; Carbonate system computation flag; arctic pteropods; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.952310; https://doi.pangaea.de/10.1594/PANGAEA.952310

Ocean warming and acidification will be most pronounced in the Arctic. Both phenomena severely threaten thecosome pteropods (holoplanktonic marine gastropods) by reducing their survival (warming) and causing the dissolution of their aragonitic shell (acidification). Lipids, particularly phospholipids, play a major role in veligers and juveniles of the polar thecosome pteropod Limacina helicina comprising more than two-thirds of their total lipids. Membrane lipids (phospholipids) are important for the temperature acclimation of ectotherms. Hence, we experimentally investigated ocean warming and acidification effects on total lipids, lipid classes, and fatty acids of Arctic early-stage L. helicina. The temperature and pCO2 treatments chosen resembled Representative Concentration Pathway model scenarios for this century. We found a massive decrease in total lipids at elevated temperatures and at the highest CO2 concentration (1,100 μatm) of the in situ temperature. Clearly, temperature was the overriding ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2022-12-15.All parameter in % are relative to total lipids. ...