Dataset: Short-term heat stress assay Heron Island - thermal tolerance comparison between studies

Name: Thermal tolerance (ED50) data used to compare previously published regional (Florida Reef Tract, Coral Sea, Red Sea) coral thermal tolerance with Heron Island, Great Barrier Reef values measured in 2022
Published: 2024-05-07
Keywords: thermal tolerance, environmental variability, climate change, coral reefs, priming, oceans

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Cite This Dataset

Spatial Extent: N:-23.27 E:151.55 S:-23.27 W:151.55

Heron Island Research Station, Heron Island, southern Great Barrier Reef (23 27°S, 151 55°E)

Temporal Extent: 2022-09-15 - 2022-10-30

Project:

Influence of environmental pH variability and thermal sensitivity on the resilience of reef-building corals to acidification stress (Coral Resilience)

Co-Principal Investigator:

Katie Barott (University of Pennsylvania, Penn)

Kristen Brown (University of Pennsylvania, Penn)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2024-05-07

Restricted:

Validated:

Current State:

Data not available

Thermal tolerance (ED50) data used to compare previously published regional (Florida Reef Tract, Coral Sea, Red Sea) coral thermal tolerance with Heron Island, Great Barrier Reef values measured in 2022

Abstract:

Variable temperature regimes that expose corals to sub-lethal heat stress have been recognized as a mechanism to increase coral thermal tolerance and lessen coral bleaching. However, there is a need to better understand which thermal regimes maximize coral stress hardening. Here, standardized thermal stress assays were used to determine the relative thermal tolerance of three divergent genera of corals (Acropora, Pocillopora, Porites) originating from six reef sites representing an increasing gradient of annual mean diel temperature fluctuations of 1–3°C day-1. Bleaching severity and dark-acclimated photochemical yield (i.e., Fv/Fm) were quantified following exposure to five temperature treatments ranging from 23.0 to 36.3°C (see Related Datasets). This data set contains the comparison of thermal tolerance across studies.

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Description

See the "Related Datasets" section for other closely related data that was also part of the study published in Brown et al., 2024.

Dataset "Short-term heat stress assay Heron Island - physiological data" contains a supplemental file ed50.csv which contains Photochemical yield and color score data from the Heron Island short term heat assay which was used to determine effective dose 50 (ED50, thermal tolerance). The Heron Island ED50 values are included in this thermal tolerance comparison dataset.

Methods & Sampling

Three published studies using the standardized experimental approach (i.e., (Evensen et al. 2023)) were identified to compare coral thermal thresholds across reef systems and spatial scales: 1. Florida Reef Tract in the Caribbean (~300 km) (Cunning et al. 2021), 2. Coral Sea in eastern Australia (~860 km) (Marzonie et al. 2022), and 3. Red Sea (~900 km) (Evensen et al. 2022). Reported values of coral thermal tolerance (i.e., Fv/Fm ED50) were compiled by nursery/reef/site. To compare regional (Florida Reef Tract, Coral Sea, Red Sea) coral thermal tolerance with local (Heron Island), the range of coral thermal tolerance was calculated for each species by computing the difference between the site with the greatest thermal tolerance and the site with the lowest thermal tolerance.

Organism Genera (Genus, Lifesciences Identifier [LSID]):
Pocillopora, urn:lsid:marinespecies.org:taxname:206938
Porites, urn:lsid:marinespecies.org:taxname:206485
Acropora, urn:lsid:marinespecies.org:taxname:205469
* see supplemental file species_list.csv for supplemental information and LSIDs for all species names in the data table for this dataset.

Problems/Issues

N/A

Data Processing Description

For more detailed information on analysis and results, please see: Brown, et al. (2024).

BCO-DMO Processing

* submitted file "ed50 comparison across studies.csv" was imported into the BCO-DMO data system for this dataset. No changes were made to the table.
** Missing data values are displayed differently based on the file format you download. They are blank in csv files, "NaN" in MatLab files, etc.

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1923743

Deployments

None available yet

Instruments

Onset HOBO Pendant Temperature/Light Data Logger

Supplied Name: temperature loggers (HOBO UA-001-64)

Supplied Description:

Instrument Type

Generic Name: Onset HOBO Pendant Temperature/Light Data Logger

Acronym: Onset HOBO Pendant Temp/Light

Generic Description:

The Onset HOBO (model numbers UA-002-64 or UA-001-64) is an in-situ instrument for wet or underwater applications. It supports light intensity, soil temperature, temperature, and water temperature. A two-channel logger with 10-bit resolution can record up to approximately 28,000 combined temperature and light measurements with 64K bytes memory. It has a polypropylene housing case. Uses an optical USB to transmit data. A solar radiation shield is used for measurement in sunlight. Temperature measurement range: -20 deg C to 70 deg C (temperature). Light measurement range: 0 to 320,000 lux. Temperature accuracy: +/- 0.53 deg C from 0 deg C to 50 deg C. Light accuracy: Designed for measurement of relative light levels. Water depth rating: 30 m.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Location	Geolocation of the study (Heron Island, Coral Sea, Florida, etc).	unitless	site
Genus	Coral genus	unitless	genus
Species	Species name (includes cf.)	unitless	species
Reef	Reef Name or site code (see related publications for these studies for site code information). Heron island site include the full site name.	unitless	site
ed50	photochemical yield effective dose 50 [ed50m thermal tolerance]	degrees Celsius (degC)	no_bcodmo_term
Lower	95% lower confidence interval	degrees Celsius (degC)	no_bcodmo_term
Upper	95% upper confidence interval	degrees Celsius (degC)	no_bcodmo_term

Database

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Dataset: Short-term heat stress assay Heron Island - thermal tolerance comparison between studies