Citation:

lno.10048

Name: Carbonate chemistry, community metabolism, PAR, temperature and salinity of One Tree Island reef
Published: 2014-08-21
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Benthos; Calcification/Dissolution; Coast and continental shelf; Entire community; Field observation; Primary production/Photosynthesis; Rocky-shore community; South Pacific; Temperate

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Published: 2014-08-21 • DOI registered: 2014-09-19

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Abstract:

There are few in situ studies showing how net community calcification (Gnet) of coral reefs is related to carbonate chemistry, and the studies to date have demonstrated different predicted rates of change. In this study, we measured net community production (Pnet), Gnet, and carbonate chemistry of a reef flat at One Tree Island, Great Barrier Reef. Diurnal pCO2 variability of 289-724 µatm was driven primarily by photosynthesis and respiration. The reef flat was found to be net autotrophic, with daily production of ~ 35 mmol C/m**2/d and net calcification of ~ 33 mmol C/m**2/d . Gnet was strongly related to Pnet, which drove a hysteresis pattern in the relationship between Gnet and aragonite saturation state (Omega ar). Although Pnet was the main driver of Gnet, Omega ar was still an important factor, where 95% of the variance in Gnet could be described by Pnet and Omega ar. Based on the observed in situ relationship, Gnet would be expected to reach zero when Omega ar is 2.5. It is unknown what proportion of a decline in Gnet would be through reduced calcification and what would occur through increased dissolution, but the results here support predictions that overall calcium carbonate production will decline in coral reefs as a result of ocean acidification.

Keyword(s):

Benthos; Calcification/Dissolution; Coast and continental shelf; Entire community; Field observation; Primary production/Photosynthesis; Rocky-shore community; South Pacific; Temperate

Related to:

Shaw, Emily; Phinn, Stuart R; Tilbrook, Bronte; Steven, Andrew D L (2014): Comparability of Slack Water and Lagrangian Flow Respirometry Methods for Community Metabolic Measurements. PLoS ONE, 9(11), e112161, https://doi.org/10.1371/journal.pone.0112161.s001

Further details:

Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0 [webpage]. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Median Latitude: -23.507540 * Median Longitude: 152.089334 * South-bound Latitude: -23.510100 * West-bound Longitude: 152.039500 * North-bound Latitude: -23.477800 * East-bound Longitude: 152.091900

Date/Time Start: 2013-11-08T17:28:00 * Date/Time End: 2013-11-22T13:56:00

Minimum DEPTH, water: 0.50 m * Maximum DEPTH, water: 1.60 m

Event(s):

One_Tree_Island * Latitude: -23.507500 * Longitude: 152.089300 * Date/Time Start: 2013-11-08T00:00:00 * Date/Time End: 2013-11-22T00:00:00 * Method/Device: Experiment (EXP)

Comment:

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 2014-08-21.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Site	Site		Shaw, Emily
2	DATE/TIME	Date/Time				Geocode
3	Date	Date		Shaw, Emily		UTC
4	LATITUDE	Latitude				Geocode
5	LONGITUDE	Longitude				Geocode
6	DEPTH, water	Depth water	m			Geocode
7	Temperature, water	Temp	°C	Shaw, Emily		measured in situ
8	Salinity	Sal		Shaw, Emily		measured in situ
9	Irradiance	E	µmol/m²/s	Shaw, Emily		measured in situ
10	Alkalinity, total	AT	µmol/kg	Shaw, Emily		measured from discrete water samples
11	Carbon, inorganic, dissolved	DIC	µmol/kg	Shaw, Emily		measured from discrete water samples
12	Alkalinity, total	AT	µmol/kg	Shaw, Emily		salinity-normalized (S=35)
13	Carbon, inorganic, dissolved	DIC	µmol/kg	Shaw, Emily		salinity-normalized (S=35)
14	pH, total scale	pHT		Shaw, Emily	Calculated using CO2SYS	total scale
15	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Shaw, Emily	Calculated using CO2SYS
16	Aragonite saturation state	Omega Arg		Shaw, Emily	Calculated using CO2SYS
17	Net calcification rate of calcium carbonate	NC CaCO3	µmol/cm²/h	Shaw, Emily	Calculated	calculated from changes in TA and DIC of consecutive samples
18	Net photosynthesis rate, carbon dioxide	PN CO2	µmol/cm²/h	Shaw, Emily		calculated from changes in TA and DIC of consecutive samples
19	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
20	pH, total scale	pHT		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
21	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
22	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
23	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
24	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
25	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
26	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
27	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1810 data points

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Datasets with similar metadata

Shaw, E; McNeil, BI; Tilbrook, B (2012): Carbonate chemistry, temperature and salinity of Lady Elliot Island Reef 2009-2010. https://doi.org/10.1594/PANGAEA.823685
Davis, KL; McMahon, A; Kelaher, BP et al. (2019): Seawater carbonate chemistry and calcification and productivity of sporadic coral reef. https://doi.org/10.1594/PANGAEA.908818
DeCarlo, TM; Cohen, AL; Wong, GTF et al. (2017): Seawater carbonate chemistry and ecosystem calcification, community production of coral reef. https://doi.org/10.1594/PANGAEA.875891

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