Seawater carbonate chemistry and critical thermal maximum of coral reef fishes ...

• Main Authors: Ern, Rasmus, Johansen, Jacob L, Rummer, Jodie L, Esbaugh, Andrew J
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Acanthochromis polyacanthus; Animalia; Behaviour; Cheilodipterus quinquelineatus; Chordata; Chromis atripectoralis; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Laboratory experiment; Nekton; Oxygen; Pelagos; Respiration; Single species; South Pacific; Temperature; Tropical; Type; Species; Registration number of species; Uniform resource locator/link to reference; Experiment duration; Treatment; Temperature, water; Temperature, water, standard error; Oxygen, partial pressure; Oxygen, partial pressure, standard error; Metabolic rate, maximum; Metabolic rate, maximum, standard error; Mass; Mass, standard error; Metabolic rate, standard; Metabolic rate, standard, standard error; Aerobic scope of oxygen; Aerobic scope of oxygen, standard error; Oxygen, partial pressure, critical; Oxygen, partial pressure, critical, standard error; Critical thermal maximum; Critical thermal maximum, standard error; Identification; Duration; pH; pH, standard error; Alkalinity, total; Alkalinity, total, standard error; Salinity; Salinity, standard error; Partial pressure of carbon dioxide water at sea surface temperature wet air; Carbonate system computation flag; Carbon dioxide; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.923833; https://doi.pangaea.de/10.1594/PANGAEA.923833

Rising ocean temperatures are predicted to cause a poleward shift in the distribution of marine fishes occupying the extent of latitudes tolerable within their thermal range boundaries. A prevailing theory suggests that the upper thermal limits of fishes are constrained by hypoxia and ocean acidification. However, some eurythermal fish species do not conform to this theory, and maintain their upper thermal limits in hypoxia. Here we determine if the same is true for stenothermal species. In three coral reef fish species we tested the effect of hypoxia on upper thermal limits, measured as critical thermal maximum (CTmax). In one of these species we also quantified the effect of hypoxia on oxygen supply capacity, measured as aerobic scope (AS). In this species we also tested the effect of elevated CO2 (simulated ocean acidification) on the hypoxia sensitivity of CTmax. We found that CTmax was unaffected by progressive hypoxia down to approximately 35 mmHg, despite a substantial hypoxia-induced reduction in AS. ... : 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 2020-09-27. ...