Seawater carbonate chemistry and metabolic rate, ventilation rate and critical oxygen partial pressure of Dosidicus gigas and Doryteuthis pealeii ...

• Main Authors: Birk, Matthew A, McLean, Erin L, Seibel, Brad A
• Format: Dataset
• Language: English
• Published: PANGAEA 2018
• Subjects: Animalia; Behaviour; Benthos; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Doryteuthis pealeii; Dosidicus gigas; Growth/Morphology; Laboratory experiment; Mollusca; Nekton; North Atlantic; Respiration; Single species; Temperate; Type; Species; Registration number of species; Uniform resource locator/link to reference; Identification; Mass; Length, mantle; Gender; Temperature, water; Salinity; pH; Partial pressure of carbon dioxide water at sea surface temperature wet air; Metabolic rate of oxygen; Oxygen, partial pressure, critical; Oxygen, partial pressure; Ventilation rate; Alkalinity, total; Alkalinity, total, standard deviation; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.909481; https://doi.pangaea.de/10.1594/PANGAEA.909481

Ocean acidification is hypothesized to limit the performance of squid owing to their exceptional oxygen demand and pH sensitivity of blood–oxygen binding, which may reduce oxygen supply in acidified waters. The critical oxygen partial pressure (Pcrit), the PO2 below which oxygen supply cannot match basal demand, is a commonly reported index of hypoxia tolerance. Any CO2-induced reduction in oxygen supply should be apparent as an increase in Pcrit. In this study, we assessed the effects of CO2 (46–143 Pa; 455–1410 μatm) on the metabolic rate and Pcrit of two squid species - Dosidicus gigas and Doryteuthis pealeii – through manipulative experiments. We also developed a model, with inputs for hemocyanin pH sensitivity, blood PCO2 and buffering capacity, that simulates blood oxygen supply under varying seawater CO2 partial pressures. We compare model outputs with measured Pcrit in squid. Using blood–O2 parameters from the literature for model inputs, we estimated that, in the absence of blood acid–base ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) 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 2019-11-20. ...