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Xu, Kai; Fu, Feixue; Hutchins, David A (2014): Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.840328, Supplement to: Xu, K et al. (2014): Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability. Limnology and Oceanography, 59(6), 1919-1931, https://doi.org/10.4319/lo.2014.59.6.1919

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Abstract:
We investigated the responses of the ecologically dominant Antarctic phytoplankton species Phaeocystis antarctica (a prymnesiophyte) and Fragilariopsis cylindrus (a diatom) to a clustered matrix of three global change variables (CO2, mixed-layer depth, and temperature) under both iron (Fe)-replete and Fe-limited conditions based roughly on the Intergovernmental Panel on Climate Change (IPCC) A2 scenario: (1) Current conditions, 39 Pa (380 ppmv) CO2, 50 µmol photons/m**2/s light, and 2°C; (2) Year 2060, 61 Pa (600 ppmv) CO2, 100 µmol photons/m**2/s light, and 4°C; (3) Year 2100, 81 Pa (800 ppmv) CO2, 150 µmol photons/m**2/s light, and 6°C. The combined interactive effects of these global change variables and changing Fe availability on growth, primary production, and cell morphology are species specific. A competition experiment suggested that future conditions could lead to a shift away from P. antarctica and toward diatoms such as F. cylindrus. Along with decreases in diatom cell size and shifts from prymnesiophyte colonies to single cells under the future scenario, this could potentially lead to decreased carbon export to the deep ocean. Fe : C uptake ratios of both species increased under future conditions, suggesting phytoplankton of the Southern Ocean will increase their Fe requirements relative to carbon fixation. The interactive effects of Fe, light, CO2, and temperature on Antarctic phytoplankton need to be considered when predicting the future responses of biology and biogeochemistry in this region.
Keyword(s):
Antarctic; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Chromista; Fragilariopsis cylindrus; Growth/Morphology; Haptophyta; Laboratory experiment; Laboratory strains; Light; Micro-nutrients; Ochrophyta; Pelagos; Phaeocystis antarctica; Phytoplankton; Primary production/Photosynthesis; Species interaction; Temperature
Further details:
Lavigne, Héloïse; 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):
Ocean Acidification International Coordination Centre (OA-ICC)
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 2014-12-04.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1SpeciesSpeciesHutchins, David A
2TreatmentTreatHutchins, David A
3TreatmentTreatHutchins, David A
4Growth rateµ1/dayHutchins, David A
5Growth rate, standard deviationµ std dev±Hutchins, David A
6Chlorophyll a per cellChl a/cellpg/#Hutchins, David A
7Chlorophyll a, standard deviationChl a std dev±Hutchins, David A
8Carbon/Nitrogen ratioC/NHutchins, David A
9Carbon/Nitrogen ratio, standard deviationC/N std dev±Hutchins, David A
10Nitrogen/Phosphorus ratioN/PHutchins, David A
11Nitrogen/Phosphorus ratio, standard deviationN/P std dev±Hutchins, David A
12Carbon/Phosphorus ratioC/PHutchins, David A
13Carbon/Phosphorus ratio, standard deviationC/P std dev±Hutchins, David A
14Silicon/Carbon, molar ratioSi/CHutchins, David A
15Silicon/Carbon ratio, standard deviationSi/C±Hutchins, David A
16Silicon/Nitrogen, molar ratioSi/NHutchins, David A
17Silicon/Nitrogen ratio, standard deviationSi/N ratio std dev±Hutchins, David A
18Silicon/Phosphorus ratioSi/PHutchins, David A
19Silicon/Phosphorus ratio, standard deviationSi/P std dev±Hutchins, David A
20Iron uptake rate, per cellFe upt rate/cellfmol/#/hHutchins, David A
21Iron uptake rate, standard deviationFe upt rate std dev±Hutchins, David A
22Iron/Carbon uptake ratioFe/C uptµmol/molHutchins, David A
23Iron/Carbon uptake ratio, standard deviationFe/C upt std dev±Hutchins, David A
24Cell counts, percent of totalCell count%Hutchins, David Asolitary cell percentag
25Cell counts, standard deviationCell count std dev±Hutchins, David Asolitary cell percentag
26Cell density per colonyCells/col#/#Hutchins, David A
27Cell density, standard deviationCells std dev±Hutchins, David A
28DiameterصmHutchins, David Acolony
29HeighthµmHutchins, David A
30DiameterصmHutchins, David A
31Cell biovolumeCell biovolµm3Hutchins, David A
32Duration, number of daysDurationdaysHutchins, David A
33AbundanceAbund%Hutchins, David A
34Abundance, standard deviationAbund std dev±Hutchins, David A
35Particulate organic carbon, per cellPOC/cellpmol/#Hutchins, David A
36Carbon, organic, particulate, standard deviationPOC std dev±Hutchins, David A
37Particulate organic nitrogen per cellPON/cellpmol/#Hutchins, David A
38Nitrogen, organic, particulate, standard deviationPON std dev±Hutchins, David A
39Particulate organic carbon production per cellPOC prod/cellpmol/#/dayHutchins, David AMeasured
40Particulate organic carbon, production, standard deviationPOC prod std dev±Hutchins, David A
41Production of particulate organic nitrogenPON prodpmol/#/dayHutchins, David A
42Particulate organic nitrogen production, standard deviationPON prod std dev±Hutchins, David A
43Particulate organic phosphorus per cellPOP/cellpmol/#Hutchins, David A
44Particulate organic phosphorus, standard deviationPOP std dev±Hutchins, David A
45Particulate organic phosphorus production per cellPOP prod/cellpmol/#/dayHutchins, David A
46Production of particulate organic phosphorus, standard deviationPOP prod std dev±Hutchins, David A
47Biogenic silica, per cellbSiO2/cellfmol/#Hutchins, David A
48Biogenic silica, standard deviationbSiO2 std dev±Hutchins, David A
49Biogenic silica production per cellbSiO2 prod/cellfmol/#/dayHutchins, David A
50Biogenic silica production, standard deviationbSiO2 prod std dev±Hutchins, David A
51SalinitySalHutchins, David A
52Temperature, waterTemp°CHutchins, David A
53pHpHHutchins, David APotentiometricNBS scale
54pH, standard deviationpH std dev±Hutchins, David APotentiometricNBS scale
55Carbon, inorganic, dissolvedDICµmol/kgHutchins, David ACoulometric titration
56Carbon, inorganic, dissolved, standard deviationDIC std dev±Hutchins, David ACoulometric titration
57Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
58pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
59Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
60Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
61Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
62Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
63Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
64Alkalinity, totalATµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
65Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
66Calcite 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:
32742 data points

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