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Zheng, Xinqing; Wang, Chenying; Sheng, Huaxia; Niu, Gaofeng; Dong, Xu; Yuan, Lingling; Shi, Tuo (2021): Seawater carbonate chemistry and carbon and nitrogen fixation in the hermatypic coral Galaxea fascicularis [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.932784

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Abstract:
The supply of metabolites from symbionts to scleractinian corals is crucial to coral health. Members of the Symbiodiniaceae can enhance coral calcification by providing photosynthetically fixed carbon (PFC) and energy, whereas dinitrogen (N2)-fixing bacteria can provide additional nutrients such as diazotrophically-derived nitrogen (DDN) that sustain coral productivity especially when alternative external nitrogen sources are scarce. How these mutualistic associations benefit corals in the future acidifying ocean is not well understood. In this study, we investigated the possible effects of ocean acidification (OA; pHs 7.7 and 7.4 vs. 8.1) on calcification in the hermatypic coral Galaxea fascicularis with respect to PFC and DDN assimilation. Our measurements based on isotopic tracing showed no significant differences in the assimilation of PFC among different pH treatments, but the assimilation of DDN decreased significantly after 28 days of stress at pH 7.4. The decreased DDN assimilation suggests a nitrogenous nutrient deficiency in the coral holotiont, potentially leading to reduced coral calcification and resilience to bleaching and other stressful events. This contrasting impact of OA on carbon and N flux demonstrates the flexibility of G. fascicularis in coping with OA, apparently by sustaining a largely undamaged photosystem at the expense of N2 fixation machinery, which competes with coral calcification for energy from photosynthesis. These findings shed new light on the critically important but more vulnerable N cycling in hospite, and on the trade-off between coral hosts and symbionts in response to future climate change.
Keyword(s):
Animalia; Benthic animals; Benthos; Calcification/Dissolution; Cnidaria; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Galaxea fascicularis; Laboratory experiment; North Pacific; Other metabolic rates; Primary production/Photosynthesis; Single species; Tropical
Supplement to:
Zheng, Xinqing; Wang, Chenying; Sheng, Huaxia; Niu, Gaofeng; Dong, Xu; Yuan, Lingling; Shi, Tuo (2021): Effects of Ocean Acidification on Carbon and Nitrogen Fixation in the Hermatypic Coral Galaxea fascicularis. Frontiers in Marine Science, 8, https://doi.org/10.3389/fmars.2021.644965
Further details:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2021): seacarb: seawater carbonate chemistry with R. R package version 3.2.16. https://cran.r-project.org/web/packages/seacarb/index.html
Project(s):
Ocean Acidification International Coordination Centre (OA-ICC)
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) 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 by seacarb is 2021-06-17.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1TypeTypeShi, Tuostudy
2SpeciesSpeciesShi, Tuo
3Registration number of speciesReg spec noShi, Tuo
4Uniform resource locator/link to referenceURL refShi, TuoWoRMS Aphia ID
5Experiment durationExp durationdaysShi, Tuo
6TreatmentTreatShi, Tuo
7Effective quantum yieldYShi, Tuo
8Effective quantum yield, standard deviationY std dev±Shi, Tuo
9Maximum quantum yield of photosystem IIFv/FmShi, Tuo
10Maximum quantum yield of photosystem II, standard deviationFv/Fm std dev±Shi, Tuo
11Calcification rateCalc rate%/weekShi, Tuo
12Calcification rate, standard deviationCalc rate std dev±Shi, Tuo
13Photosynthetically fixed carbon assimilation rate, carbon in tracer/carbon in tissuePFC assim rnmol/µmol/dayShi, Tuo
14Photosynthetically fixed carbon assimilation rate, carbon in tracer/carbon in tissue, standard deviationPFC assim r std dev±Shi, Tuo
15Diazotrophically-derived nitrogen assimilation rate, nitrogen in tracer/nitrogen in tissueDDN assim rnmol/µmol/dayShi, Tuo
16Diazotrophically-derived nitrogen assimilation rate, nitrogen in tracer/nitrogen in tissue, standard deviationDDN assim r std dev±Shi, Tuo
17δ13Cδ13C‰ PDBShi, Tuo
18δ13C, standard deviationδ13C std dev±Shi, Tuo
19δ15Nδ15N‰ airShi, Tuo
20δ15N, standard deviationδ15N std dev±Shi, Tuo
21pHpHShi, TuoPotentiometrictotal scale
22pH, standard deviationpH std dev±Shi, TuoPotentiometrictotal scale
23Alkalinity, totalATµmol/lShi, TuoPotentiometric titration
24Alkalinity, total, standard deviationAT std dev±Shi, TuoPotentiometric titration
25Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmShi, TuoCalculated using CO2SYS
26Partial pressure of carbon dioxide, standard deviationpCO2 std dev±Shi, TuoCalculated using CO2SYS
27Carbon dioxideCO2µmol/kgShi, TuoCalculated using CO2SYS
28Carbon dioxide, standard deviationCO2 std dev±Shi, TuoCalculated using CO2SYS
29Bicarbonate ion[HCO3]-µmol/kgShi, TuoCalculated using CO2SYS
30Bicarbonate ion, standard deviation[HCO3]- std dev±Shi, TuoCalculated using CO2SYS
31Carbonate ion[CO3]2-µmol/kgShi, TuoCalculated using CO2SYS
32Carbonate ion, standard deviation[CO3]2- std dev±Shi, TuoCalculated using CO2SYS
33Aragonite saturation stateOmega ArgShi, TuoCalculated using CO2SYS
34Aragonite saturation state, standard deviationOmega Arg std dev±Shi, TuoCalculated using CO2SYS
35Temperature, waterTemp°CShi, Tuo
36Temperature, water, standard deviationTemp std dev±Shi, Tuo
37SalinitySalShi, Tuo
38Salinity, standard deviationSal std dev±Shi, Tuo
39Phosphate[PO4]3-µmol/lShi, Tuo
40Phosphate, standard deviation[PO4]3- std dev±Shi, Tuo
41Nitrite[NO2]-µmol/lShi, Tuo
42Nitrite, standard deviation[NO2]- std dev±Shi, Tuo
43Nitrate[NO3]-µmol/lShi, Tuo
44SilicateSi(OH)4µmol/lShi, Tuo
45Silicate, standard deviationSi(OH)4 std dev±Shi, Tuo
46Ammonium[NH4]+µmol/lShi, Tuo
47Ammonium, standard deviation[NH4]+ std dev±Shi, Tuo
48Alkalinity, totalATµmol/kgShi, Tuo
49Carbonate system computation flagCSC flagShi, TuoCalculated using seacarb after Nisumaa et al. (2010)
50Carbon dioxideCO2µmol/kgShi, TuoCalculated using seacarb after Nisumaa et al. (2010)
51Carbon dioxide, standard deviationCO2 std dev±Shi, TuoCalculated using seacarb after Orr et al. (2018)
52Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmShi, TuoCalculated using seacarb after Nisumaa et al. (2010)
53Fugacity of carbon dioxide in seawater, standard deviationfCO2 std dev±Shi, TuoCalculated using seacarb after Orr et al. (2018)
54Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmShi, TuoCalculated using seacarb after Nisumaa et al. (2010)
55Partial pressure of carbon dioxide, standard deviationpCO2 std dev±Shi, TuoCalculated using seacarb after Orr et al. (2018)
56Bicarbonate ion[HCO3]-µmol/kgShi, TuoCalculated using seacarb after Nisumaa et al. (2010)
57Bicarbonate ion, standard deviation[HCO3]- std dev±Shi, TuoCalculated using seacarb after Orr et al. (2018)
58Carbonate ion[CO3]2-µmol/kgShi, TuoCalculated using seacarb after Nisumaa et al. (2010)
59Carbonate ion, standard deviation[CO3]2- std dev±Shi, TuoCalculated using seacarb after Orr et al. (2018)
60Carbon, inorganic, dissolvedDICµmol/kgShi, TuoCalculated using seacarb after Nisumaa et al. (2010)
61Carbon, inorganic, dissolved, standard deviationDIC std dev±Shi, TuoCalculated using seacarb after Orr et al. (2018)
62Aragonite saturation stateOmega ArgShi, TuoCalculated using seacarb after Nisumaa et al. (2010)
63Aragonite saturation state, standard deviationOmega Arg std dev±Shi, TuoCalculated using seacarb after Orr et al. (2018)
64Calcite saturation stateOmega CalShi, TuoCalculated using seacarb after Nisumaa et al. (2010)
65Calcite saturation state, standard deviationOmega Cal std dev±Shi, TuoCalculated using seacarb after Orr et al. (2018)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
555 data points

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