Early life stages of the Arctic copepod Calanus glacialis are unaffected by increased seawater pCO2, supplement to: Bailey, Allison; Thor, Peter; Browman, Howard I; Fields, David M; Runge, Jeffrey A; Vermont, Alexander; Bjelland, Reidun; Thompson, Cameron; Shema, Steven; Durif, Caroline M F; Hop, Haakon (2016): Early life stages of the Arctic copepod Calanus glacialis are unaffected by increased seawater pCO2. ICES Journal of Marine Science, fsw066

• Main Authors: Bailey, Allison, Thor, Peter, Browman, Howard I, Fields, David M, Runge, Jeffrey A, Vermont, Alexander, Bjelland, Reidun, Thompson, Cameron, Shema, Steven, Durif, Caroline M F, Hop, Haakon
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2017
• Subjects: Animalia; Arctic; Arthropoda; Biomass/Abundance/Elemental composition; Calanus glacialis; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Development; Growth/Morphology; Laboratory experiment; Pelagos; Polar; Respiration; Single species; Zooplankton; Type; Species; Registration number of species; Uniform resource locator/link to reference; Stage; Treatment; Median development time; Median development time, standard error; Replicates; Duration, number of days; Duration, number of days, standard error; Dry mass; Dry mass, standard error; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard error; Carbon content per individual; Carbon content per individual, standard error; Nitrogen content per individual; Nitrogen content per individual, standard error; Respiration rate, oxygen, per individual; Respiration rate, oxygen, standard error; Respiration rate, oxygen; Temperature, water; pH; pH, standard error; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air, standard error; Salinity; Salinity, standard error; Alkalinity, total; Alkalinity, total, standard error; Bicarbonate ion; Bicarbonate ion, standard error; Carbonate ion; Carbonate ion, standard error; Carbon dioxide; Carbon dioxide, standard error; Nitrite; Nitrite, standard error; Nitrate; Nitrate, standard error; Phosphate; Phosphate, standard error; Silicate; Silicate, standard error; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; Experiment; Spectrophotometric; Calculated using CO2SYS; Potentiometric titration; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Svalbard; Norway; Arctic copepod; Ocean acidification; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.861734; https://doi.pangaea.de/10.1594/PANGAEA.861734

As the world's oceans continue to absorb anthropogenic CO2 from the atmosphere, the carbonate chemistry of seawater will change. This process, termed ocean acidification, may affect the physiology of marine organisms. Arctic seas are expected to experience the greatest decreases in pH in the future, as changing sea ice dynamics and naturally cold, brackish water, will accelerate ocean acidification. In this study, we investigated the effect of increased pCO2 on the early developmental stages of the key Arctic copepod Calanus glacialis. Eggs from wild-caught C. glacialis females from Svalbard, Norway (80°N), were cultured for 2 months to copepodite stage C1 in 2°C seawater under four pCO2 treatments (320, 530, 800, and 1700 matm). Developmental rate, dry weight, and carbon and nitrogen mass were measured every other day throughout the experiment, and oxygen consumption rate was measured at stages N3, N6, and C1. All endpoints were unaffected by pCO2 levels projected for the year 2300. These results indicate that naupliar development in wild populations of C. glacialis is unlikely to be detrimentally affected in a future high CO2 ocean. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) 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 is 2016-06-15.