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Hofmann, Laurie C; Yildiz, Gamse; Hanelt, D; Bischof, Kai (2014): Experiment: Physiological responses of the calcifying rhodophyte, Corallina officinalis (L.), to future CO2 levels. PANGAEA, https://doi.org/10.1594/PANGAEA.830128, Supplement to: Hofmann, LC et al. (2011): Physiological responses of the calcifying rhodophyte, Corallina officinalis (L.), to future CO2 levels. Marine Biology, 159(4), 783-792, https://doi.org/10.1007/s00227-011-1854-9

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Abstract:
Future atmospheric CO2 levels will most likely have complex consequences for marine organisms, particulary photosynthetic calcifying organisms. Corallina officinalis L. is an erect calcifying macroalga found in the inter- and subtidal regions of temperate rocky coastlines and provides important substrate and refugia for marine meiofauna. The main goal of the current study was to determine the physiological responses of C. officinalis to increased CO2 concentrations expected to occur within the next century and beyond. Our results show that growth and production of inorganic material decreased under high CO2 levels, while carbonic anhydrase activity was stimulated and negatively correlated to algal inorganic content. Photosynthetic efficiency based on oxygen evolution was also negatively affected by increased CO2. The results of this study indicate that C. officinalis may become less competitive under future CO2 levels, which could result in structural changes in future temperate intertidal communities.
Keyword(s):
Benthos; Calcification/Dissolution; Coast and continental shelf; Containers and aquaria (20- 1000 L or < 1 m**2); Corallina officinalis; Growth/Morphology; Laboratory experiment; Macroalgae; North Atlantic; Plantae; Primary production/Photosynthesis; Rhodophyta; Single species; Temperate
Further details:
Lavigne, Héloise; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. 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 and Gattuso, 2011) 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 2014-02-11.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1SpeciesSpeciesHofmann, Laurie C
2TreatmentTreatHofmann, Laurie C
3GroupGroupHofmann, Laurie C
4ReplicateReplicateHofmann, Laurie C
5Incubation durationInc durdaysHofmann, Laurie C
6DateDateHofmann, Laurie C
7Time of dayTime of dayHofmann, Laurie C
8Maximum photochemical quantum yield of photosystem IIFv/FmHofmann, Laurie C
9IrradianceEµmol/m2/sHofmann, Laurie C
10Gross oxygen evolution, per chlorophyll aO2 ev/Chlµmol/mg/hHofmann, Laurie C
11Net oxygen evolution, per chlorophyll aO2 ev/Chlµmol/mg/hHofmann, Laurie C
12Calcified areaCalc areaHofmann, Laurie C
13Growth rateµ%/dayHofmann, Laurie C
14Carbonic anhydrase, activityCA activity1/gHofmann, Laurie C
15Organic matterOM%Hofmann, Laurie C
16Inorganic matterIM%Hofmann, Laurie C
17Fluorescence, yield at any given timeFtHofmann, Laurie C
18Electron transport rateETRµmol e/m2/sHofmann, Laurie C
19YieldYield%Hofmann, Laurie C
20Photochemical quenchingqPHofmann, Laurie C
21Non photochemical quenchingNPQHofmann, Laurie C
22Fluorescence, maximum, without dark adaptationFm'Hofmann, Laurie C
23Fluorescence, minimum, without dark adaptationFo'Hofmann, Laurie C
24Temperature, waterTemp°CHofmann, Laurie C
25SalinitySalHofmann, Laurie C
26pHpHHofmann, Laurie Ctotal scale
27pH, standard errorpH std e±Hofmann, Laurie Ctotal scale
28Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmHofmann, Laurie C
29Partial pressure of carbon dioxide, standard deviationpCO2 std dev±Hofmann, Laurie C
30Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
31Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
32Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
33Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
34Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
35Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
36Alkalinity, totalATµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
37Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Size:
13244 data points

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