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Büscher, Janina; Form, Armin; Riebesell, Ulf (2017): Seawater carbon chemistry and growth rate, mortality, fitness of cold-water coral Lophelia pertusa. PANGAEA,, Supplement to: Büscher, J et al. (2017): Interactive Effects of Ocean Acidification and Warming on Growth, Fitness and Survival of the Cold-Water Coral Lophelia pertusa under Different Food Availabilities. Frontiers in Marine Science, 4,

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Cold-water corals are important bioengineers that provide structural habitat for a diverse species community. About 70 % of the presently known scleractinian cold-water corals are expected to be exposed to corrosive waters by the end of this century due to ocean acidification. At the same time, the corals will experience a steady warming of their environment. Studies on the sensitivity of cold-water corals to climate change mainly concentrated on single stressors in short-term incubation approaches, thus not accounting for possible long-term acclimatisation and the interactive effects of multiple stressors. Besides, preceding studies did not test for possible compensatory effects of a change in food availability. In this study a multifactorial long-term experiment (6 months) was conducted with end-of-the-century scenarios of elevated pCO2 and temperature levels in order to examine the acclimatisation potential of the cosmopolitan cold-water coral Lophelia pertusa to future climate change related threats. For the first time multiple ocean change impacts including the role of the nutritional status were tested on L. pertusa with regard to growth, 'fitness', and survival. Our results show that while L. pertusa is capable of calcifying under elevated CO2 and temperature, its condition (fitness) is more strongly influenced by food availability rather than changes in seawater chemistry. Whereas growth rates increased at elevated temperature (+ 4°C), they decreased under elevated CO2 concentrations (800 µatm). No difference in net growth was detected when corals were exposed to the combination of increased CO2 and temperature compared to ambient conditions. A 10-fold higher food supply stimulated growth under elevated temperature, which was not observed in the combined treatment. This indicates that increased food supply does not compensate for adverse effects of ocean acidification and underlines the importance of considering the nutritional status in studies investigating organism responses under environmental changes.
Animalia; Benthic animals; Benthos; Cnidaria; Containers and aquaria (20-1000 L or < 1 m**2); Deep-sea; Growth/Morphology; Laboratory experiment; Lophelia pertusa; Mortality/Survival; North Atlantic; Other; Other studied parameter or process; Single species; Temperate; Temperature
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.
Latitude: 63.606670 * Longitude: 9.378330
Date/Time Start: 2011-09-01T00:00:00 * Date/Time End: 2011-09-30T00:00:00
Trondheim_fjord_OA * Latitude: 63.606670 * Longitude: 9.378330 * Date/Time Start: 2011-09-01T00:00:00 * Date/Time End: 2011-09-30T00:00:00 * Method/Device: Experiment (EXP)
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 2017-07-19.
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1TypeTypeBüscher, Janinastudy
2SpeciesSpeciesBüscher, Janina
3Registration number of speciesReg spec noBüscher, Janina
4Uniform resource locator/link to referenceURL refBüscher, JaninaWoRMS Aphia ID
5Experiment durationExp durationmonthsBüscher, Janina
6TreatmentTreatBüscher, Janina
7Temperature, waterTemp°CBüscher, Janina
8Temperature, water, standard deviationTemp std dev±Büscher, Janina
9SalinitySalBüscher, Janina
10Salinity, standard deviationSal std dev±Büscher, Janina
11Alkalinity, totalATµmol/kgBüscher, Janina
12Alkalinity, total, standard deviationAT std dev±Büscher, Janina
13Carbon, inorganic, dissolvedDICµmol/kgBüscher, Janina
14Carbon, inorganic, dissolved, standard deviationDIC std dev±Büscher, Janina
15pHpHBüscher, Janinatotal scale
16pH, standard deviationpH std dev±Büscher, Janinatotal scale
17Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmBüscher, Janina
18Partial pressure of carbon dioxide, standard deviationpCO2 std dev±Büscher, Janina
19Bicarbonate ion[HCO3]-µmol/kgBüscher, Janina
20Bicarbonate ion, standard deviation[HCO3]- std dev±Büscher, Janina
21Aragonite saturation stateOmega ArgBüscher, Janina
22Aragonite saturation state, standard deviationOmega Arg std dev±Büscher, Janina
23ReplicatesRepl#Büscher, Janina
24Growth rateµ%/dayBüscher, Janina
25Growth rate, standard deviationµ std dev±Büscher, Janina
26Growth rateµ%/dayBüscher, JaninaMin
27Growth rateµ%/dayBüscher, JaninaMax
28RNA/DNA ratioRNA/DNABüscher, JaninaFitness
29RNA/DNA ratio, standard deviationRNA/DNA std dev±Büscher, JaninaFitness
30RNA/DNA ratioRNA/DNABüscher, JaninaFitness, Min
31RNA/DNA ratioRNA/DNABüscher, JaninaFitness, Max
32MortalityMortality%Büscher, Janina
33Mortality, standard deviationMortality std dev±Büscher, Janina
34Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
35pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
36Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
37Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
39Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
40Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
41Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
42Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
336 data points

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