DOI: 10.5061/dryad.7sqv9s55s
title: Data from: Oxygen supersaturation could protect reef-building corals against acute thermal stress

description: Ongoing climate change is constraining the availability of molecular
 oxygen (O2) on coral reefs. The field has recently invested considerable
 resources to quantify the effects of hypoxia on corals. However, drivers
 of reef oxygen decline will not only expose corals to more frequent
 episodes of hypoxia but also limit peak daytime oxygen levels. Here, we
 test the theory of oxygen-mediated thermal performance on three
 reef-building corals by comparing their thermal thresholds under three
 bulk seawater oxygen concentrations in low flow conditions: 10 mg O2 L⁻¹,
 6.5 mg O2 L⁻¹, and &lt; 2 mg O2 L⁻¹. We hypothesized that when the
 photosynthetic machinery of their microalgal symbionts was impaired,
 corals in higher oxygen treatments would use oxygen from the bulk water to
 supplement their heightened metabolic demands under heat stress, thereby
 increasing their thermal thresholds. These datasets include mortality,
 photochemical efficiency, and metabolic rates for three coral species from
 the Red Sea in an acute thermal stress assay under varying oxygen regimes.
description: # Data from: Oxygen supersaturation could protect reef-building corals
 against acute thermal stress Dataset DOI:
 [10.5061/dryad.7sqv9s55s](https://doi.org/10.5061/dryad.7sqv9s55s) ##
 Description of the data and file structure This dataset includes data from
 the experiments conducted in *Oxygen supersaturation could protect
 reef-building corals from acute heat stress.* 3 identical thermal ramping
 experiments were performed on 3 coral species, under 3 different oxygen
 regimes. Here we include the respiration and net photosynthesis mean
 values, the average PAM per temperature and the mortality data per
 temperature (as a percentage). ### Files and variables #### File:
 Dataset_1.xlsx **Sheet:** TPC This sheet includes the mean metabolic rates
 per temperature that were used to construct the thermal performance curves
 (TPC) in Figure 4. ##### Variables * Curve_ID - individual performance
 curve * Species - coral species * Treatment - oxygen treatment * temp -
 temperature (°C) * rate - average metabolic rate (μmol O₂ cm⁻² h⁻¹) per
 temperature * std_dev - standard deviation (μmol O₂ cm⁻² h⁻¹) of the
 average metabolic rate **Sheet:** Mortality This sheet includes all
 mortality data used for the dose response curves in Figure 3. #####
 Variables * Temperature - (°C) * Gal_Hyp_Mort - percentage mortality for
 the Hyperoxia treatment, *G. fascicularis* experiment * Gal_Cont_Mort
 - percentage mortality for the Control treatment, *G. fascicularis*
 experiment * Gal_Deox_Mort - percentage mortality for the Deoxygenated
 treatment, *G. fascicularis* experiment * Acr_Hyp_Mort - percentage
 mortality for the Hyperoxia treatment, *A. hemprichii* experiment *
 Acr_Cont_Mort - percentage mortality for the Control treatment, *A.
 hemprichii* experiment * Acr_Deox_Mort - percentage mortality for the
 Deoxygenated treatment, *A. hemprichii* experiment * Sty_Hyp_Mort
 - percentage mortality for the Hyperoxia treatment, *S. pistillata*
 experiment * Sty_Cont_Mort - percentage mortality for the Control
 treatment, *S. pistillata* experiment * Sty_Deox_Mort - percentage
 mortality for the Deoxygenated treatment, *S. pistillata* experiment
 **Sheet:** PAM  This sheet includes the average PAM (pulse-amplitude
 flurometry) values per temperature, used for dose reponse curves in Figure
 3.  *F~q~'/F~m~'* is the operating photochemical efficiency.
 ##### Variables * Oxygen_Treatment - oxygen treatment (hyperoxia, control,
 deoxygenated) * Species - coral species * Temperature - Temperature (°C) *
 Average_PAM - Average *F~q~'/F~m~'* value per temperature *
 PAM_SD - Standard deviation for average PAM per temperature * n - number
 of replicates