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Schaum, Elisa; Rost, Björn; Collins, Sinéad (2016): Environmental stability affects phenotypic evolution in a globally distributed marine picoplankton. PANGAEA, https://doi.org/10.1594/PANGAEA.863127, Supplement to: Schaum, E et al. (2015): Environmental stability affects phenotypic evolution in a globally distributed marine picoplankton. The ISME Journal, 10(1), 75-84, https://doi.org/10.1038/ismej.2015.102

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Abstract:
Marine phytoplankton can evolve rapidly when confronted with aspects of climate change because of their large population sizes and fast generation times. Despite this, the importance of environment fluctuations, a key feature of climate change, has received little attention-selection experiments with marine phytoplankton are usually carried out in stable environments and use single or few representatives of a species, genus or functional group. Here we investigate whether and by how much environmental fluctuations contribute to changes in ecologically important phytoplankton traits such as C:N ratios and cell size, and test the variability of changes in these traits within the globally distributed species Ostreococcus. We have evolved 16 physiologically distinct lineages of Ostreococcus at stable high CO2 (1031±87 µatm CO2, SH) and fluctuating high CO2 (1012±244 µatm CO2, FH) for 400 generations. We find that although both fluctuation and high CO2 drive evolution, FH-evolved lineages are smaller, have reduced C:N ratios and respond more strongly to further increases in CO2 than do SH-evolved lineages. This indicates that environmental fluctuations are an important factor to consider when predicting how the characteristics of future phytoplankton populations will have an impact on biogeochemical cycles and higher trophic levels in marine food webs.
Keyword(s):
Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Chlorophyta; Growth/Morphology; Laboratory experiment; Laboratory strains; Not applicable; Ostreococcus sp.; Pelagos; Phytoplankton; Plantae; Primary production/Photosynthesis; Respiration; Single species
Further details:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloise (2015): seacarb: seawater carbonate chemistry with R. R package version 3.0.8. https://cran.r-project.org/package=seacarb
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 2016-07-19.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1TypeTypeSchaum, Elisastudy
2SpeciesSpeciesSchaum, Elisa
3Registration number of speciesReg spec noSchaum, Elisa
4Uniform resource locator/link to referenceURL refSchaum, ElisaWoRMS Aphia ID
5FigureFigSchaum, Elisa
6TreatmentTreatSchaum, Elisaassay
7TreatmentTreatSchaum, Elisaselected
8EcotypeEcotypeSchaum, Elisa
9TypeTypeSchaum, Elisafluctuate or not
10TypeTypeSchaum, Elisaassay
11Net photosynthesis rate, oxygen, per cellPN O2fmol/#/hSchaum, Elisa
12Net photosynthesis rate, standard deviationPN std dev±Schaum, Elisa
13Respiration rate, oxygen, per cellResp O2/cellfmol/#/hSchaum, Elisa
14Respiration rate, oxygen, standard deviationResp O2 std dev±Schaum, Elisa
15Chlorophyll a per cellChl afmol/#Schaum, Elisa
16Chlorophyll a, standard deviationChl a std dev±Schaum, Elisa
17SizeSizeµmSchaum, Elisacell
18Cell size, standard deviationCell size std dev±Schaum, Elisa
19Chlorophyll a per cellChl afmol/#Schaum, Elisadegraded
20Chlorophyll a, standard deviationChl a std dev±Schaum, Elisadegraded
21Lipids per cellLipids/cellpg/#Schaum, Elisa
22Lipids, standard deviationLipids std dev±Schaum, Elisa
23Carbon/Nitrogen ratioC/NSchaum, Elisa
24Carbon/Nitrogen ratio, standard deviationC/N std dev±Schaum, Elisa
25Growth rateµ1/daySchaum, Elisa
26Temperature, waterTemp°CSchaum, Elisa
27SalinitySalSchaum, Elisa
28Carbon, inorganic, dissolvedDICµmol/kgSchaum, Elisa
29Carbon, inorganic, dissolved, standard deviationDIC std dev±Schaum, Elisa
30Alkalinity, totalATµmol/kgSchaum, Elisa
31Alkalinity, total, standard deviationAT std dev±Schaum, Elisa
32Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
33pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
34Carbon dioxideCO2µmol/kgYang, 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)
36Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
37Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
39Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
40Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Size:
4875 data points

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