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Lohbeck, Kai T; Riebesell, Ulf; Reusch, Thorsten BH (2014): Adaptive evolution of a key phytoplankton species to ocean acidification. doi:10.1594/PANGAEA.832482,
Supplement to: Lohbeck, KT et al. (2012): Adaptive evolution of a key phytoplankton species to ocean acidification. Nature Geoscience, 5(5), 346-351, doi:10.1038/ngeo1441

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Abstract:
Ocean acidification, the drop in seawater pH associated with the ongoing enrichment of marine waters with carbon dioxide from fossil fuel burning, may seriously impair marine calcifying organisms. Our present understanding of the sensitivity of marine life to ocean acidification is based primarily on short-term experiments, in which organisms are exposed to increased concentrations of CO2. However, phytoplankton species with short generation times, in particular, may be able to respond to environmental alterations through adaptive evolution. Here, we examine the ability of the world's single most important calcifying organism, the coccolithophore Emiliania huxleyi, to evolve in response to ocean acidification in two 500-generation selection experiments. Specifically, we exposed E. huxleyi populations founded by single or multiple clones to increased concentrations of CO2. Around 500 asexual generations later we assessed their fitness. Compared with populations kept at ambient CO2 partial pressure, those selected at increased partial pressure exhibited higher growth rates, in both the single- and multiclone experiment, when tested under ocean acidification conditions. Calcification was partly restored: rates were lower under increased CO2 conditions in all cultures, but were up to 50% higher in adapted compared with non-adapted cultures. We suggest that contemporary evolution could help to maintain the functionality of microbial processes at the base of marine food webs in the face of global change.
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
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 2014-05-12.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1SpeciesSpeciesLohbeck, Kai T
2ExperimentExpLohbeck, Kai T
3TreatmentTreatLohbeck, Kai Tµatm pCO2
4TreatmentTreatLohbeck, Kai Tselection condition µatm pCO2
5TreatmentTreatLohbeck, Kai Tassay condition µatm pCO2
6Growth rateµ1/dayLohbeck, Kai T
7Carbon, organic, particulate, per cellPOCpg/#Lohbeck, Kai T
8Carbon, inorganic, particulate, per cellPIC/cellpg/#Lohbeck, Kai T
9Production of particulate organic carbon per cellPOC prodpg/#/dayLohbeck, Kai T
10Particulate inorganic carbon production per cellPIC prodpg/#/dayLohbeck, Kai T
11Particulate inorganic carbon/particulate organic carbon ratioPIC/POC ratioLohbeck, Kai T
12Cell sizeCell sizeµmLohbeck, Kai T
13SalinitySalLohbeck, Kai Tselection condition
14Temperature, waterTemp°CLohbeck, Kai Tselection condition
15PhosphatePHSPHTµmol/kgLohbeck, Kai Tselection condition
16Alkalinity, totalATµmol/kgLohbeck, Kai Tselection condition
17Carbon, inorganic, dissolvedDICµmol/kgLohbeck, Kai Tselection condition
18pHpHLohbeck, Kai Ttotal scale, selection condition
19Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmLohbeck, Kai Tselection condition
20Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmLohbeck, Kai Tselection condition
21SalinitySalLohbeck, Kai Tassay condition
22Temperature, waterTemp°CLohbeck, Kai Tassay condition
23PhosphatePHSPHTµmol/kgLohbeck, Kai Tassay condition
24Alkalinity, totalATµmol/kgLohbeck, Kai Tassay condition
25Carbon, inorganic, dissolvedDICµmol/kgLohbeck, Kai Tassay condition
26pHpHLohbeck, Kai Ttotal scale, assay condition
27Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmLohbeck, Kai Tassay condition
28Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmLohbeck, Kai Tassay condition
29Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
30pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale, selection condition
31Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)selection condition
32Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)selection condition
33Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)selection condition
34Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)selection condition
35Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)selection condition
36Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)selection condition
37Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)selection condition
38pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale, assay condition
39Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)assay condition
40Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)assay condition
41Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)assay condition
42Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)assay condition
43Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)assay condition
44Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)assay condition
45Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)assay condition
Size:
3150 data points

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