Ocean acidification has no effect on thermal bleaching in the coral Seriatopora caliendrum, supplement to: Wall, Christopher B; Fan, Tung-Yung; Edmunds, Peter J (2013): Ocean acidification has no effect on thermal bleaching in the coral Seriatopora caliendrum. Coral Reefs, 33(1), 119-130

• Main Authors: Wall, Christopher B, Fan, Tung-Yung, Edmunds, Peter J
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2014
• Subjects: Animalia; Benthic animals; Benthos; Cnidaria; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Growth/Morphology; Laboratory experiment; North Pacific; Primary production/Photosynthesis; Respiration; Seriatopora caliendrum; Single species; Temperature; Tropical; Species; Partial pressure of carbon dioxide water at sea surface temperature wet air; Temperature, water; Identification; Replicate; Surface area; Cell density; Chlorophyll a; Chlorophyll a per cell; Photosynthetic efficiency; Net photosynthesis rate, oxygen; Respiration rate, oxygen; Effective quantum yield; Maximum photochemical quantum yield of photosystem II; Temperature, water, standard error; pH; Alkalinity, total; Alkalinity, total, standard error; Partial pressure of carbon dioxide water at sea surface temperature wet air, standard error; Bicarbonate ion; Bicarbonate ion, standard error; Carbonate ion; Carbonate ion, standard error; Salinity; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; Experiment; Spectrophotometric; 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.833949; https://doi.pangaea.de/10.1594/PANGAEA.833949

The objective of this study was to test whether elevated pCO2 predicted for the year 2100 (85.1 Pa) affects bleaching in the coral Seriatopora caliendrum (Ehrenberg 1834) either independently or interactively with high temperature (30.5 °C). Response variables detected the sequence of events associated with the onset of bleaching: reduction in the photosynthetic performance of symbionts as measured by maximum photochemical efficiency (F v/F m) and effective photochemical efficiency (delta F/F m') of PSII, declines in net photosynthesis (P net) and photosynthetic efficiency (alpha), and finally, reduced chlorophyll a and symbiont concentrations. S. caliendrum was collected from Nanwan Bay, Taiwan, and subjected to combinations of temperature (27.7 vs. 30.5 °C) and pCO2 (45.1 vs. 85.1 Pa) for 14 days. High temperature reduced values of all dependent variables (i.e., bleaching occurred), but high pCO2 did not affect Symbiodinium photophysiology or productivity, and did not cause bleaching. These results suggest that short-term exposure to 81.5 Pa pCO2, alone and in combination with elevated temperature, does not cause or affect coral bleaching. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) 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 2014-07-09.