Seawater carbonate chemistry and pulse rate, bell diameter, and righting ability of Cassiopeia sp. ...

• Main Authors: Thayer, R, Brunetz, I A, Daniel, S J, Wigal, C M, Nazor, K E
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Animalia; Behaviour; Benthic animals; Benthos; Cassiopeia sp.; Cnidaria; Containers and aquaria 20-1000 L or < 1 m**2; Growth/Morphology; Laboratory experiment; Laboratory strains; Not applicable; Single species; Type; Species; Experiment; Treatment; Time in days; Diameter; Pulse rate; Righting time; Salinity; Temperature, water; Carbon, inorganic, dissolved; Partial pressure of carbon dioxide water at sea surface temperature wet air; Carbonate system computation flag; pH; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; 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.945448; https://doi.pangaea.de/10.1594/PANGAEA.945448

The detrimental effect of ocean acidification (OA) on marine animals with carbonate exoskeletons or shells is an issue drawing increased attention in marine biology and ecology, yet few studies have focused on the impact on gelatinous organisms like scyphozoan medusae. Here, we examined the physiological tolerance of Cassiopea sp., an abundant genus of scyphozoans valuable for their role as bioindicators and for having similarities to other cnidarians, to OA by conducting three, 12-week trials using CO2 diffusers and electronic pH controllers to incrementally lower the water to test pHs of 7.5 and 7.0. The impact of reduced pH on the survival, pulse rate, bell diameter, and reorientation and settlement abilities of Cassiopea sp. medusae were measured weekly. Cassiopea sp. was tolerant to pH 7.5 while further reduction of the pH to 7.0 resulted in 22.22% mortality rate, which was significantly different from the control and treatment pH 7.5. Significant differences between the treatment pH 7.0 and control ... : 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 2022-06-15. ...