Data Description

Citation:
Lohbeck, KT et al. (2014): Adaptive evolution of a key phytoplankton species to ocean acidification. doi:10.1594/PANGAEA.832482,
Supplement to: Lohbeck, Kai T; Riebesell, Ulf; Reusch, Thorsten BH (2012): Adaptive evolution of a key phytoplankton species to ocean acidification. Nature Geoscience, 5(5), 346-351, doi:10.1038/ngeo1441
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 *
Project(s):
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
1Species *SpeciesLohbeck, Kai T *
2Experiment *ExpLohbeck, Kai T *
3Treatment *TreatmLohbeck, Kai T *µatm pCO2
4Treatment *TreatmLohbeck, Kai T *selection condition µatm pCO2
5Treatment *TreatmLohbeck, Kai T *assay condition µatm pCO2
6Growth rate *µ1/dayLohbeck, Kai T *
7Carbon, organic, particulate, per cell *POCpg/#Lohbeck, Kai T *
8Carbon, inorganic, particulate, per cell *PIC/cellpg/#Lohbeck, Kai T *
9Production of particulate organic carbon per cell *POC prodpg/#/dayLohbeck, Kai T *
10Particulate inorganic carbon production per cell *PIC prodpg/#/dayLohbeck, Kai T *
11Particulate inorganic carbon/particulate organic carbon ratio *PIC/POC ratioLohbeck, Kai T *
12Cell size *Cell sizeµmLohbeck, Kai T *
13Salinity *SalLohbeck, Kai T *selection condition
14Temperature, water *Temp°CLohbeck, Kai T *selection condition
15Phosphate *PHSPHTµmol/kgLohbeck, Kai T *selection condition
16Alkalinity, total *ATµmol/kgLohbeck, Kai T *selection condition
17Carbon, inorganic, dissolved *DICµmol/kgLohbeck, Kai T *selection condition
18pH *pHLohbeck, Kai T *total scale, selection condition
19Fugacity of carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmLohbeck, Kai T *selection condition
20Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmLohbeck, Kai T *selection condition
21Salinity *SalLohbeck, Kai T *assay condition
22Temperature, water *Temp°CLohbeck, Kai T *assay condition
23Phosphate *PHSPHTµmol/kgLohbeck, Kai T *assay condition
24Alkalinity, total *ATµmol/kgLohbeck, Kai T *assay condition
25Carbon, inorganic, dissolved *DICµmol/kgLohbeck, Kai T *assay condition
26pH *pHLohbeck, Kai T *total scale, assay condition
27Fugacity of carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmLohbeck, Kai T *assay condition
28Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmLohbeck, Kai T *assay condition
29Carbonate system computation flag *CSC flagYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
30pH *pHYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *total scale, selection condition
31Carbon dioxide *CO2µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *selection condition
32Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *selection condition
33Fugacity of carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *selection condition
34Bicarbonate ion *[HCO3]-µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *selection condition
35Carbonate ion *[CO3]2-µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *selection condition
36Aragonite saturation state *Omega ArgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *selection condition
37Calcite saturation state *Omega CalYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *selection condition
38pH *pHYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *total scale, assay condition
39Carbon dioxide *CO2µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *assay condition
40Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *assay condition
41Fugacity of carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *assay condition
42Bicarbonate ion *[HCO3]-µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *assay condition
43Carbonate ion *[CO3]2-µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *assay condition
44Aragonite saturation state *Omega ArgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *assay condition
45Calcite saturation state *Omega CalYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *assay condition
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3150 data points

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