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Pettit, Laura Rachel; Smart, Christopher W; Hart, Malcom B; Milazzo, Marco; Hall-Spencer, Jason M (2015): Seaweed fails to prevent ocean acidification impact on foraminifera along a shallow-water CO2 gradient [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.846530, Supplement to: Pettit, LR et al. (2015): Seaweed fails to prevent ocean acidification impact on foraminifera along a shallow-water CO2 gradient. Ecology and Evolution, 5(9), 1784-1793, https://doi.org/10.1002/ece3.1475

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Abstract:
Ocean acidification causes biodiversity loss, alters ecosystems, and may impact food security, as shells of small organisms dissolve easily in corrosive waters. There is a suggestion that photosynthetic organisms could mitigate ocean acidification on a local scale, through seagrass protection or seaweed cultivation, as net ecosystem organic production raises the saturation state of calcium carbonate making seawater less corrosive. Here, we used a natural gradient in calcium carbonate saturation, caused by shallow-water CO2 seeps in the Mediterranean Sea, to assess whether seaweed that is resistant to acidification (Padina pavonica) could prevent adverse effects of acidification on epiphytic foraminifera. We found a reduction in the number of species of foraminifera as calcium carbonate saturation state fell and that the assemblage shifted from one dominated by calcareous species at reference sites (pH 8.19) to one dominated by agglutinated foraminifera at elevated levels of CO2 (pH 7.71). It is expected that ocean acidification will result in changes in foraminiferal assemblage composition and agglutinated forms may become more prevalent. Although Padina did not prevent adverse effects of ocean acidification, high biomass stands of seagrass or seaweed farms might be more successful in protecting epiphytic foraminifera.
Keyword(s):
Adelosina longirostra; Affinetrina gualtieriana; Benthos; Biomass/Abundance/Elemental composition; Bolivina pseudoplicata; CO2 vent; Coast and continental shelf; Community composition and diversity; Cornuspira involvens; Daitrona sp.; Elphidium advenum; Elphidium crispum; Elphidium macellum; Elphidium margaritaceum; Elphidium sp.; Entire community; Field observation; Haynesina depressula; Lobatula lobatula; Massilina gualtieriana; Mediterranean Sea; Miliolinella sp.; Miliolinella subrotunda; Peneroplis pertusus; Peneroplis planatus; Pileolina patelliformis; Pseudotriloculina sp.; Quinqueloculina annectens; Quinqueloculina auberiana; Quinqueloculina bosciana; Quinqueloculina sp.; Quinqueloculina stelligera; Rocky-shore community; Rosalina globularis; Rosalina sp.; Spiroloculina ornata; Temperate; Triloculinella dilatata; Vertebralina striata
Further details:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse (2015): seacarb: seawater carbonate chemistry with R. R package version 3.0.6. https://cran.r-project.org/package=seacarb
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, 2015) 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 2015-05-21.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1IdentificationIDPettit, Laura Rachel
2SpeciesSpeciesPettit, Laura Rachel
3IndividualsInd#Pettit, Laura Rachelper 2g dried thallus
4PercentagePerc%Pettit, Laura Rachel
5Temperature, waterTemp°CPettit, Laura Rachel
6SalinitySalPettit, Laura Rachel
7pHpHPettit, Laura RachelPotentiometricNBS scale
8Alkalinity, totalATµmol/kgPettit, Laura RachelPotentiometric titration
9Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmPettit, Laura RachelCalculated using CO2SYS
10Bicarbonate ion[HCO3]-µmol/kgPettit, Laura RachelCalculated using CO2SYS
11Carbonate ion[CO3]2-µmol/kgPettit, Laura RachelCalculated using CO2SYS
12Calcite saturation stateOmega CalPettit, Laura RachelCalculated using CO2SYS
13Aragonite saturation stateOmega ArgPettit, Laura RachelCalculated using CO2SYS
14Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
15pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
16Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
17Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
18Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
19Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
20Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
21Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
22Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
23Calcite saturation stateOmega CalYang, YanCalculated 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:
42780 data points

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