Combined effects of short-term exposure to elevated CO2 and decreased O2 on the physiology and energy budget of the thick shell mussel Mytilus coruscus ...

• Main Authors: Sui, Yanming, Kong, Hui, Huang, Xizhi, Dupont, Sam, Hu, Menghong, Storch, Daniela, Pörtner, Hans-Otto, Lu, Weiqun, Wang, Youji
• Format: Dataset
• Language: English
• Published: PANGAEA 2016
• Subjects: Animalia; Behaviour; Benthic animals; Benthos; Brackish waters; Containers and aquaria 20-1000 L or < 1 m**2; Growth/Morphology; Laboratory experiment; Mollusca; Mytilus coruscus; North Pacific; Other metabolic rates; Respiration; Single species; Temperate; Type; Species; Registration number of species; Uniform resource locator/link to reference; Time in hours; Treatment; Respiration rate, oxygen; Ammonia excretion; Clearance rate; Scope for growth; Oxygen consumed/Nitrogen excreted ratio; Fecal organic dry mass ratio; Absorption efficiency; Oxygen; Oxygen, standard deviation; Salinity; Salinity, standard deviation; pH; pH, standard deviation; Temperature, water; Temperature, water, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Pacific; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.862074; https://doi.pangaea.de/10.1594/PANGAEA.862074

Hypoxia and ocean acidification are two consequences of anthropogenic activities. These global trends occur on top of natural variability. In environments such as estuarine areas, short-term acute pH and O2 fluctuations are occurring simultaneously. The present study tested the combined effects of short-term seawater acidification and hypoxia on the physiology and energy budget of the thick shell mussel Mytilus coruscus. Mussels were exposed for 72 h to six combined treatments with three pH levels (8.1, 7.7 and 7.3) and two dissolved oxygen (DO) levels (2 mg/L, 6 mg/L). Clearance rate (CR), food absorption efficiency (AE), respiration rate (RR), ammonium excretion rate (ER), O:N ratio and scope for growth (SFG) were significantly reduced, and faecal organic dry weight ratio (E) was significantly increased at low DO. Low pH did not lead to a reduced SFG. Interactive effects of pH and DO were observed for CR, E and RR. Principal component analysis (PCA) revealed positive relationships among most physiological ... : 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 2016-06-30. ...