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Trimborn, Scarlett; Brenneis, Tina; Hoppe, Clara Jule Marie; Laglera, Luis M; Norman, Louiza; Santos-Echeandía, Juan; Völkner, Christian; Wolf-Gladrow, Dieter A; Hassler, Christel S (2018): Seawater carbonate chemistry and Southern Ocean phytoplankton community characterization and iron uptake. PANGAEA, https://doi.org/10.1594/PANGAEA.890637, Supplement to: Trimborn, S et al. (2017): Iron sources alter the response of Southern Ocean phytoplankton to ocean acidification. Marine Ecology Progress Series, 578, 35-50, https://doi.org/10.3354/meps12250

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Abstract:
The rise in anthropogenic CO2 and the associated ocean acidification (OA) will change trace metal solubility and speciation, potentially altering Southern Ocean (SO) phytoplankton productivity and species composition. As iron (Fe) sources are important determinants of Fe bioavailability, we assessed the effect of Fe-laden dust versus inorganic Fe (FeCl3) enrichment under ambient and high pCO2 levels (390 and 900 μatm) in a naturally Fe-limited SO phytoplankton community. Despite similar Fe chemical speciation and net particulate organic carbon (POC) production rates, CO2-dependent species shifts were controlled by Fe sources. Final phytoplankton communities of both control and dust treatments were dominated by the same species, with an OA-dependent shift from the diatom Pseudo nitzschia prolongatoides towards the prymnesiophyte Phaeocystis antarctica. Addition of FeCl3 resulted in high abundances of Nitzschia lecointei and Chaetoceros neogracilis under ambient and high pCO2, respectively. These findings reveal that both the characterization of the phytoplankton community at the species level and the use of natural Fe sources are essential for a realistic projection of the biological carbon pump in the Fe-limited pelagic SO under OA. As dust deposition represents a more realistic scenario for the Fe-limited pelagic SO under OA, unaffected net POC production and dominance of P. antarctica can potentially weaken the export of carbon and silica in the future.
Keyword(s):
Antarctic; Antarctic; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria ( 20 L); Community composition and diversity; Entire community; Laboratory experiment; Micro-nutrients; Open ocean; Other metabolic rates; Pelagos; Primary production/Photosynthesis; Temperate
Further details:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloise; Orr, James C; Gentili, Bernard; Proye, Aurélien; Soetaert, Karline; Rae, James (2016): seacarb: seawater carbonate chemistry with R. R package version 3.1. https://cran.r-project.org/package=seacarb
Coverage:
Latitude: -53.013330 * Longitude: 10.025000
Date/Time Start: 2012-01-21T00:00:00 * Date/Time End: 2012-01-21T00:00:00
Event(s):
Polar_front * Latitude: -53.013330 * Longitude: 10.025000 * Date/Time: 2012-01-21T00:00:00 * Device: Experiment (EXP)
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) 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 2018-05-23.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1TypeTypeTrimborn, Scarlettstudy
2TreatmentTreatTrimborn, Scarlett
3Time in daysTimedaysTrimborn, Scarlett
4Maximum photochemical quantum yield of photosystem IIFv/FmTrimborn, Scarlett
5Maximum photochemical quantum yield of photosystem II, standard deviationFv/Fm std dev±Trimborn, Scarlett
6Nitrate[NO3]-µmol/lTrimborn, Scarlett
7Nitrate, standard deviationNO3 std dev±Trimborn, Scarlett
8Time point, descriptiveTime pointTrimborn, Scarlett
9AbundanceAbund%Trimborn, ScarlettPseudonitzschia pro longatoides
10Abundance, standard deviationAbund std dev±Trimborn, ScarlettPseudonitzschia pro longatoides
11AbundanceAbund%Trimborn, ScarlettNitz-schia leco intei
12Abundance, standard deviationAbund std dev±Trimborn, ScarlettNitz-schia leco intei
13AbundanceAbund%Trimborn, ScarlettChaetoceros neo-gracilis
14Abundance, standard deviationAbund std dev±Trimborn, ScarlettChaetoceros neo-gracilis
15AbundanceAbund%Trimborn, ScarlettFragilariopsis curta
16Abundance, standard deviationAbund std dev±Trimborn, ScarlettFragilariopsis curta
17AbundanceAbund%Trimborn, ScarlettPhaeocystis antarctica
18Abundance, standard deviationAbund std dev±Trimborn, ScarlettPhaeocystis antarctica
19AbundanceAbund%Trimborn, Scarletttotal diatoms
20Abundance, standard deviationAbund std dev±Trimborn, Scarletttotal diatoms
21Growth rateµ1/dayTrimborn, ScarlettP. antarctica
22Growth rate, standard deviationµ std dev±Trimborn, ScarlettP. antarctica
23Growth rateµ1/dayTrimborn, ScarlettDiatom community
24Growth rate, standard deviationµ std dev±Trimborn, ScarlettDiatom community
25Cell densityCells#/mlTrimborn, ScarlettPseudonitzschia pro longatoides
26Cell density, standard deviationCells std dev±Trimborn, ScarlettPseudonitzschia pro longatoides
27Cell densityCells#/mlTrimborn, ScarlettNitz-schia leco intei
28Cell density, standard deviationCells std dev±Trimborn, ScarlettNitz-schia leco intei
29Cell densityCells#/mlTrimborn, ScarlettChaetoceros neo-gracilis
30Cell density, standard deviationCells std dev±Trimborn, ScarlettChaetoceros neo-gracilis
31Cell densityCells#/mlTrimborn, ScarlettFragilariopsis curta
32Cell density, standard deviationCells std dev±Trimborn, ScarlettFragilariopsis curta
33Cell densityCells#/mlTrimborn, ScarlettPhaeocystis antarctica
34Cell density, standard deviationCells std dev±Trimborn, ScarlettPhaeocystis antarctica
35Cell densityCells#/mlTrimborn, Scarletttotal diatoms
36Cell density, standard deviationCells std dev±Trimborn, Scarletttotal diatoms
37Net production of Carbon, organic, particulateNP POCµg/dayTrimborn, Scarlett
38Particulate inorganic carbon per cellPIC cellpmol/#Trimborn, Scarlett
39Biogenic particulate silica/Carbon, organic, particulatebPSi/POCTrimborn, Scarlett
40Biogenic particulate silica/Carbon, organic, particulate, standard deviationbPSi/POC std dev±Trimborn, Scarlett
41Iron uptake/Carbon, organic, particulateFe upt/POCTrimborn, Scarlett
42Iron uptake/Carbon, organic, particulate, standard deviationFe upt/POC std dev±Trimborn, Scarlett
43Iron, dissolvedFe dissnmol/lTrimborn, Scarletttotal
44Iron, chemically labileFe labnmol/lTrimborn, Scarletttotal
45Iron, dissolved, inorganicFe´ disspmol/lTrimborn, Scarlett
46Side coefficient of dissolved Fe-complex ligandsLog alpha Fe3+LiTrimborn, Scarlett
47Ligand concentrationLigandsnmol/lTrimborn, Scarlettdetermined according to Gerringa et al. (1995)
48Ligand concentration, standard deviationLigands std dev±Trimborn, Scarlettdetermined according to Gerringa et al. (1995)
49Iron, inorganic, conditional stability constantsLog K Fe'LTrimborn, Scarlettdetermined according to Gerringa et al. (1995)
50Iron, inorganic, conditional stability constants, standard deviationLog K Fe'L std dev±Trimborn, Scarlettdetermined according to Gerringa et al. (1995)
51Ligand concentrationLigandsnmol/lTrimborn, Scarlettdetermined according to van den Berg (1982)
52Ligand concentration, standard deviationLigands std dev±Trimborn, Scarlettdetermined according to van den Berg (1982)
53Iron, inorganic, conditional stability constantsLog K Fe'LTrimborn, Scarlettdetermined according to van den Berg (1982)
54Iron, inorganic, conditional stability constants, standard deviationLog K Fe'L std dev±Trimborn, Scarlettdetermined according to van den Berg (1982)
55Temperature, waterTemp°CTrimborn, Scarlett
56SalinitySalTrimborn, Scarlett
57Alkalinity, totalATµmol/kgTrimborn, Scarlettexperimental bottles
58Alkalinity, total, standard deviationAT std dev±Trimborn, Scarlettexperimental bottles
59Carbon, inorganic, dissolvedDICµmol/kgTrimborn, Scarlettexperimental bottles
60Carbon, inorganic, dissolved, standard deviationDIC std dev±Trimborn, Scarlettexperimental bottles
61pHpHTrimborn, ScarlettCalculated using CO2SYSexperimental bottles, total scale
62pH, standard deviationpH std dev±Trimborn, ScarlettCalculated using CO2SYSexperimental bottles, total scale
63Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmTrimborn, ScarlettCalculated using CO2SYSexperimental bottles
64Partial pressure of carbon dioxide, standard deviationpCO2 std dev±Trimborn, ScarlettCalculated using CO2SYSexperimental bottles
65Iron, dissolvedFe dissnmol/lTrimborn, ScarlettAbiotic control
66Iron, dissolved, standard deviationFe diss std dev±Trimborn, ScarlettAbiotic control
67Iron, dissolvedFe dissnmol/lTrimborn, Scarlettexperimental bottles
68Iron, dissolved, standard deviationFe diss std dev±Trimborn, Scarlettexperimental bottles
69Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
70pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
71Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
72Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
73Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
74Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
75Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
76Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
77Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Size:
4906 data points

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