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Wisshak, Max; Schönberg, Christine HL; Form, Armin; Freiwald, André (2013): Effects of ocean acidification and global warming on reef bioerosion-lessons from a clionaid sponge. doi:10.1594/PANGAEA.831660,
Supplement to: Wisshak, M et al. (2013): Effects of ocean acidification and global warming on reef bioerosion-lessons from a clionaid sponge. Aquatic Biology, 19(2), 111-127, doi:10.3354/ab00527

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Abstract:
Coral reefs are under threat, exerted by a number of interacting effects inherent to the present climate change, including ocean acidification and global warming. Bioerosion drives reef degradation by recycling carbonate skeletal material and is an important but understudied factor in this context. Twelve different combinations of pCO2 and temperature were applied to elucidate the consequences of ocean acidification and global warming on the physiological response and bioerosion rates of the zooxanthellate sponge Cliona orientalis-one of the most abundant and effective bioeroders on the Great Barrier Reef, Australia. Our results confirm a significant amplification of the sponges' bioerosion capacity with increasing pCO2, which is expressed by more carbonate being chemically dissolved by etching. The health of the sponges and their photosymbionts was not affected by changes in pCO2, in contrast to temperature, which had significant negative impacts at higher levels. However, we could not conclusively explain the relationship between temperature and bioerosion rates, which were slightly reduced at both colder as well as warmer temperatures than ambient. The present findings on the effects of ocean acidification on chemical bioerosion, however, will have significant implications for predicting future reef carbonate budgets, as sponges often contribute the lion's share of internal bioerosion on coral reefs.
Further details:
Lavigne, Héloise; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) 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 2014-04-04.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1SpeciesSpeciesWisshak, Max
2FigureFigWisshak, Max
3TableTabWisshak, Max
4TreatmentTreatWisshak, Max
5Time point, descriptiveTime pointWisshak, Max
6ScoreScoreWisshak, Maxhealth
7Score, standard deviationScore std dev±Wisshak, Maxhealth
8Maximum photochemical quantum yield of photosystem IIFv/FmWisshak, Max
9Maximum photochemical quantum yield of photosystem II, standard deviationFv/Fm std dev±Wisshak, Max
10Fluorescence, minimumFoWisshak, Max
11Fluorescence, minimum, standard deviationFo std dev±Wisshak, Max
12Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmWisshak, MaxCalculated using CO2SYS
13pHpHWisshak, MaxPotentiometrictotal scale
14Bioerosion rateBioerosionkg/m2/aWisshak, Maxchemical
15Temperature, waterTemp°CWisshak, Max
16Temperature, water, standard deviationTemp std dev±Wisshak, Max
17SalinitySalWisshak, Max
18Salinity, standard deviationSal std dev±Wisshak, Max
19pHpHWisshak, MaxPotentiometricmean, total scale
20pH, standard deviationpH std dev±Wisshak, MaxPotentiometrictotal scale
21Alkalinity, totalATµmol/kgWisshak, MaxPotentiometric titration
22Alkalinity, total, standard deviationAT std dev±Wisshak, MaxPotentiometric titration
23Carbon, inorganic, dissolvedDICµmol/kgWisshak, MaxCalculated using CO2SYS
24Carbon, inorganic, dissolved, standard deviationDIC std dev±Wisshak, MaxCalculated using CO2SYS
25Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmWisshak, MaxCalculated using CO2SYSmean
26Partial pressure of carbon dioxide, respiration, standard deviationpCO2 resp std dev±Wisshak, MaxCalculated using CO2SYSmean
27Bicarbonate ion[HCO3]-µmol/kgWisshak, MaxCalculated using CO2SYS
28Bicarbonate ion, standard deviation[HCO3]- std dev±Wisshak, MaxCalculated using CO2SYS
29Carbonate ion[CO3]2-µmol/kgWisshak, MaxCalculated using CO2SYS
30Carbonate ion, standard deviation[CO3]2- std dev±Wisshak, MaxCalculated using CO2SYS
31Aragonite saturation stateOmega ArgWisshak, MaxCalculated using CO2SYS
32Aragonite saturation state, standard deviationOmega Arg std dev±Wisshak, MaxCalculated using CO2SYS
33Calcite saturation stateOmega CalWisshak, MaxCalculated using CO2SYS
34Calcite saturation state, standard deviationOmega Cal std dev±Wisshak, MaxCalculated using CO2SYS
35Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
36Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
37Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
39Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
40Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
41Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
42Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
43Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Size:
2508 data points

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