Seawater carbonate chemistry and net calcification, gross photosynthesis, and dark respiration of Montipora capitata, Pocillopora damicornis and Leptastrea purpurea, supplement to: Bahr, Keisha D; Rodgers, Ku'ulei; Jokiel, Paul L (2018): Ocean warming drives decline in coral metabolism while acidification highlights species-specific responses. Marine Biology Research, 14(9-10), 924-935

• Main Authors: Bahr, Keisha D, Rodgers, Ku'ulei, Jokiel, Paul L
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2018
• Subjects: Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Cnidaria; Coast and continental shelf; Laboratory experiment; Leptastrea purpurea; Montipora capitata; North Pacific; Pocillopora damicornis; Primary production/Photosynthesis; Respiration; Single species; Species interaction; Temperature; Tropical; Type; Species; Registration number of species; Uniform resource locator/link to reference; Treatment; Temperature, water; Calcification rate of calcium carbonate; Calcification rate, standard error; Net photosynthesis rate, oxygen; Net photosynthesis rate, oxygen, standard error; Respiration rate, oxygen; Respiration rate, oxygen, standard error; Light mode; Category; Identification; Temperature, water, standard error; Oxygen, dissolved; Oxygen, dissolved, standard error; pH; pH, standard error; Alkalinity, total; Alkalinity, total, standard error; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air, standard error; Carbon, inorganic, dissolved; Proton, flux; Carbon, inorganic, dissolved, flux; Salinity; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Aragonite saturation state; Calcite saturation state; Experiment; Potentiometric; Potentiometric titration; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Pacific; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.909655; https://doi.pangaea.de/10.1594/PANGAEA.909655

Ocean warming and acidification can have negative implications on coral reefs. This mechanistic study aims to evaluate the proximal causes of the observed negative response of Hawaiian corals to climate change scenarios. Net calcification (Gnet), gross photosynthesis, and dark respiration were measured in three species of Hawaiian corals across a range of temperature and acidification regimes using endpoint incubations. Calcification rates showed a curvilinear response with temperature, with the highest calcification rates observed at 26°C. Coral response to ocean acidification (OA) was species dependent and highly variable. OA enhanced calcification rates by 45% in the perforate coral, Montipora capitata, but had no short-term effect on the calcification or photosynthetic rates of imperforate corals, Pocillopora damicornis or Leptastrea purpurea. Further investigations revealed M. capitata to effectively dissipate protons (H+) while increasing uptake of bicarbonate (HCO-3), therefore maintaining high rates of Gnet under acute OA stress. This study demonstrates the first experimental evidence of the ability of a coral species to take advantage of increased dissolved inorganic carbon and overcome an increasing proton gradient in the boundary layer under OA conditions. These observed differences in coral metabolism may underlie the species-specific responses to climate change. : 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.