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Goodwin, Claire; Rodolfo-Metalpa, Riccardo; Picton, Bernard; Hall-Spencer, Jason M (2014): Effects of ocean acidification on sponge communities. PANGAEA, https://doi.org/10.1594/PANGAEA.833805, Supplement to: Goodwin, C et al. (2014): Effects of ocean acidification on sponge communities. Marine Ecology, 35, 41-49, https://doi.org/10.1111/maec.12093

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Abstract:
The effects of ocean acidification on lower invertebrates such as sponges may be pronounced because of their low capacity for acid-base regulation. However, so far, most studies have focused on calcifiers. We present the first study of the effects of ocean acidification on the Porifera. Sponge species composition and cover along pH gradients at CO2 vents off Ischia (Tyrrhenian Sea, Italy) was measured at sites with normal pH (8.1-8.2), lowered pH (mean 7.8-7.9, min 7.4-7.5) and extremely low pH (6.6). There was a strong correlation between pH and both sponge cover and species composition. Crambe crambe was the only species present in any abundance in the areas with mean pH 6.6, seven species were present at mean pH 7.8-7.9 and four species (Phorbas tenacior, Petrosia ficiformis, Chondrilla nucula and Hemimycale columella) were restricted to sites with normal pH. Sponge percentage cover decreased significantly from normal to acidified sites. No significant effect of increasing CO2 levels and decreasing pH was found on spicule form in Crambe crambe. This study indicates that increasing CO2 concentrations will likely affect sponge community composition as some demosponge species appear to be more vulnerable than others. Further research into the mechanisms by which acidification affects sponges would be useful in predicting likely effects on sessile marine communities.
Further details:
Lavigne, Héloise; 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
Coverage:
Latitude: 40.730820 * Longitude: 13.951480
Date/Time Start: 2008-05-01T00:00:00 * Date/Time End: 2008-05-31T00:00:00
Event(s):
Castello_Aragonese * Latitude: 40.730820 * Longitude: 13.951480 * Date/Time Start: 2008-05-01T00:00:00 * Date/Time End: 2008-05-31T00:00:00 * 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 2014-07-03.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1SpeciesSpeciesGoodwin, Claire
2Station labelStationGoodwin, Claire
3CoverageCov%Goodwin, Clairemean
4Coverage, standard errorCov std e±Goodwin, Claire
5IdentificationIDGoodwin, Clairequadrat
6IdentificationIDGoodwin, Claire
7DescriptionDescriptionGoodwin, Clairesponge
8AreaAreacm2Goodwin, Claire
9CoverageCov%Goodwin, Claire
10DistanceDistancemGoodwin, Clairealong transect
11pHpHGoodwin, ClairePotentiometrictotal scale
12Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmGoodwin, ClaireCalculated using CO2SYS
13Carbonate ion[CO3]2-µmol/kgGoodwin, ClaireCalculated using CO2SYS
14Bicarbonate ion[HCO3]-µmol/kgGoodwin, ClaireCalculated using CO2SYS
15Calcite saturation stateOmega CalGoodwin, ClaireCalculated using CO2SYS
16Aragonite saturation stateOmega ArgGoodwin, ClaireCalculated using CO2SYS
17SalinitySalGoodwin, Claire
18Temperature, waterTemp°CGoodwin, Claire
19Alkalinity, totalATµmol/kgGoodwin, ClairePotentiometric titration
20Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
21Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
22Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
23Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
24Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
25Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
26Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
27Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
28Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Size:
4817 data points

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