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Schaum, Elisa; Rost, Bjoern; Millar, Andrew J; Collins, Sinéad (2012): Seawater carbonate chemistry and net photosynthesis, C/N ratio, growth rate, size of Ostreococcus tauri in a laboratory experiment. PANGAEA, https://doi.org/10.1594/PANGAEA.823378, Supplement to: Schaum, E et al. (2012): Variation in plastic responses of a globally distributed picoplankton species to ocean acidification. Nature Climate Change, 3(3), 298-302, https://doi.org/10.1038/nclimate1774

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Abstract:
Phytoplankton are the basis of marine food webs, and affect biogeochemical cycles. As CO2 levels increase, shifts in the frequencies and physiology of ecotypes within phytoplankton groups will affect their nutritional value and biogeochemical function. However, studies so far are based on a few representative genotypes from key species. Here, we measure changes in cellular function and growth rate at atmospheric CO2 concentrations predicted for the year 2100 in 16 ecotypes of the marine picoplankton Ostreococcus. We find that variation in plastic responses among ecotypes is on par with published between-genera variation, so the responses of one or a few ecotypes cannot estimate changes to the physiology or composition of a species under CO2 enrichment. We show that ecotypes best at taking advantage of CO2 enrichment by changing their photosynthesis rates most should increase in relative fitness, and so in frequency in a high-CO2 environment. Finally, information on sampling location, and not phylogenetic relatedness, is a good predictor of ecotypes likely to increase in frequency in this system.
Keyword(s):
Bottles or small containers/Aquaria (<20 L); Chlorophyta; Growth/Morphology; Laboratory experiment; Laboratory strains; North Atlantic; Ostreococcus tauri; Pelagos; Phytoplankton; Plantae; Primary production/Photosynthesis; Respiration; Single species
Original version:
Schaum, Elisa; Rost, Bjoern; Millar, Andrew J; Collins, Sinéad (2013): Data from: Variation in plastic responses of a globally distributed picoplankton species to ocean acidification. Dryad Digital Repository, https://doi.org/10.5061/DRYAD.SM7P8
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 2013-11-28.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1SpeciesSpeciesSchaum, Elisa
2IdentificationIDSchaum, Elisa
3TreatmentTreatSchaum, Elisa
4EcotypeEcotypeSchaum, Elisa
5Growth rateµ1/daySchaum, Elisa
6Growth rate, standard errorµ std e±Schaum, Elisa
7Net photosynthesis rate, oxygen, per cellPN O2fmol/#/hSchaum, Elisa
8Net photosynthesis rate, oxygen, standard errorPN O2 std e±Schaum, Elisa
9Cell sizeCell sizeµmSchaum, Elisa
10Cell size, standard errorCell size std e±Schaum, Elisa
11Carbon, organic, particulate, per cellPOCpg/#Schaum, Elisa
12Particulate organic nitrogen per cellPON cellpg/#Schaum, Elisa
13Carbon, organic, particulate/Nitrogen, organic, particulate ratioPOC/PONSchaum, Elisa
14Respiration rate, oxygen, per cellResp O2/cellfmol/#/hSchaum, Elisa
15Respiration rate, oxygen, standard errorResp O2 std e±Schaum, Elisa
16Chlorophyll a per cellChl apg/#Schaum, Elisa
17SalinitySalSchaum, Elisa
18Temperature, waterTemp°CSchaum, Elisa
19Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetppmvSchaum, Elisa
20Partial pressure of carbon dioxide, standard deviationpCO2 std dev±Schaum, Elisa
21pHpHSchaum, ElisaNBS scale
22pH, standard deviationpH std dev±Schaum, ElisaNBS scale
23Alkalinity, totalATµmol/kgSchaum, ElisaPotentiometric titration
24Alkalinity, total, standard deviationAT std dev±Schaum, Elisa
25Carbon, inorganic, dissolvedDICµmol/kgSchaum, Elisa
26Carbon, inorganic, dissolved, standard deviationDIC std dev±Schaum, Elisa
27Bicarbonate ion[HCO3]-µmol/kgSchaum, ElisaCalculated using CO2SYS
28Bicarbonate ion, standard deviation[HCO3]- std dev±Schaum, Elisa
29Carbonate ion[CO3]2-µmol/kgSchaum, ElisaCalculated using CO2SYS
30Carbonate ion, standard deviation[CO3]2- std dev±Schaum, Elisa
31Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
32pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
33Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
34Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
35Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
36Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
37Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
39Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Size:
5228 data points

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