Coral hypoxia response curve analysis

Oxygen (O2) availability is essential for healthy coral reef functioning, yet how continued loss of dissolved O2 via ocean deoxygenation impacts performance of reef building corals remains unclear. Here we examine how intra-colony spatial geometry of important Great Barrier Reef (GBR) coral species Acropora may influence variation in hypoxic thresholds for upregulation, to better understand capacity to tolerate future reductions in O2 availability. We first evaluate application of more streamlined models used to parameterise Hypoxia Response Curve data, models that have been used historically to identify variable oxyregulatory capacity. Using closed-system respirometry to analyse O2 drawdown rate, we show that a 2-parameter model returns similar outputs as previous 12th order models for descriptive statistics such as the average oxyregulation capacity (Tpos) and the ambient O2 level at which the coral exerts maximum regulation effort (Pcmax), for diverse Acropora species. Following an e..., These datasets were collected in February 2022, and all fieldwork and collections were carried out at Opal Reef on the Great Barrier Reef (GBR), Australia. 
Details for each dataset are provided in the README file.
 , , # Data from: Coral hypoxia response curve analysis

[https://doi.org/10.5061/dryad.gtht76ht3](https://doi.org/10.5061/dryad.gtht76ht3)

## Description of the data and file structure

This raw data and code has been collected and used in a recent study analysing intra-colony spatial variance of oxyregulation and hypoxic thresholds for the key coral species *Acropora* (Dilernia et al. 2024). Including algorithm evaluation and reporting selection criteria for best model choice, in conjunction with depositing data from coral hypoxia response curve analyses, allowing for reprocessing at any time using different polynomial models for comparison to optimise results, as well as *in situ* oxygen (O2) Logger Data.
The raw .csv files used to run the below code, containing data for the *p*O2 (ambient levels of O2 (% air saturation) and VO2 (patterns of O2 consumption, i.e., respiration (mg h-1) values for each species and replicate, across multiple experiments (as outlined in the manuscript), have ...