Seawater carbonate chemistry and acclimation and adaptation of the coastal calanoid copepod Acartia tonsa to ocean acidification ...

• Main Authors: Langer, Julia A F, Meunier, Cédric Léo, Ecker, Ursula, Horn, Henriette G, Schwenk, Klaus, Boersma, Maarten
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Acartia tonsa; Animalia; Arthropoda; Biomass/Abundance/Elemental composition; Containers and aquaria 20-1000 L or < 1 m**2; Development; Growth/Morphology; Laboratory experiment; Laboratory strains; Not applicable; Pelagos; Reproduction; FOS Medical biotechnology; Single species; Zooplankton; Type of study; Species, unique identification; Year of sampling; Treatment partial pressure of carbon dioxide; Carbon/Nitrogen ratio; Carbon/Phosphorus ratio; Carbon; Phosphorus; Nitrogen; Replicate; Individuals; Identification; Sampling date/time, experiment; Length; Percentage; Egg production rate per female; Nauplii; Temperature, water; Salinity; Alkalinity, total; pH; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; Potentiometric titration; Potentiometric; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification; Copepods
• Online Access: https://dx.doi.org/10.1594/pangaea.959671; https://doi.pangaea.de/10.1594/PANGAEA.959671

Ocean acidification impacts many marine biota. Although evolutionary responses should occur during persisting environmental change, little is known about the adaptability of copepods. Therefore, we set up a 3½ yr long selection experiment, maintaining Acartia tonsa populations in seawater treated with 200 and 800 μatm CO2, and feeding them with algae cultured under corresponding CO2 conditions. In 3 reciprocal transplant experiments, roughly 1 yr apart, we measured developmental rates, C:N and C:P ratios, egg production and hatching rates of the different lines. In the transplant experiments, we observed significantly lower developmental rates in the high CO2 treatment independent of the selective history. Egg production and hatching success were unaffected by the experimental conditions, but we observed an earlier hatching of eggs from females with a high CO2 selective history. Over the experimental period, beneficial adaptations of the copepods cultured under high CO2 conditions of elevated seawater pCO2 ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) 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 2023-06-08. The seawater carbonate chemistry data are the data measured at the start of the long-term selection experiment. ...