Shaw, Emily; Tilbrook, Bronte; Steven, Andrew D L; Phinn, Stuart R (2014): Carbonate chemistry, community metabolism, PAR, temperature and salinity of One Tree Island reef [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.835109, Supplement to: Shaw, Emily; Phinn, Stuart R; Tilbrook, Bronte; Steven, Andrew D L (2015): Natural in situ relationships suggest coral reef calcium carbonate production will decline with ocean acidification. Limnology and Oceanography, https://doi.org/10.1002/lno.10048
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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.
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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. https://cran.r-project.org/package=seacarb
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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
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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.
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License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1810 data points