Growth, respiration and photophysiology of coral massive Porites spp. in the experiment of Moorea
Growth, respiration and photophysiology of coral massive Porites spp. in the experiment of Moorea
I tested the hypothesis that high pCO2 (76.6 Pa and 87.2 Pa vs. 42.9 Pa) has no effect on the metabolism of juvenile massive Porites spp. after 11 days at 28 °C and 545 µmol quanta/m**2/s. The response was assessed as aerobic dark respiration, skeletal weight (i.e., calcification), biomass, and chlorophyll fluorescence. Corals were collected from the shallow (3-4 m) back reef of Moorea, French Polynesia (17°28.614'S, 149°48.917'W), and experiments conducted during April and May 2011. An increase in pCO2 to 76.6 Pa had no effect on any dependent variable, but 87.2 Pa pCO2 reduced area-normalized (but not biomass-normalized) respiration 36 %, as well as maximum photochemical efficiency (Fv/Fm) of open RCIIs and effective photochemical efficiency of RCIIs in actinic light (Delta F/F'm ); neither biomass, calcification, nor the energy expenditure coincident with calcification (J/g) was effected. These results do not support the hypothesis that high pCO2 reduces coral calcification through increased metabolic costs and, instead, suggest that high pCO2 causes metabolic depression and photochemical impairment similar to that associated with bleaching. Evidence of a pCO2 threshold between 76.6 and 87.2 Pa for inhibitory effects on respiration and photochemistry deserves further attention as it might signal the presence of unpredictable effects of rising pCO2.
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 2013-10-11.
Supplement to: Edmunds, Peter J (2012): Effect of pCO2 on the growth, respiration, and photophysiology of massive Porites spp. in Moorea, French Polynesia. Marine Biology, 159(10), 2149-2160
Ocean Acidification International Coordination Centre (OA-ICC), Salinity, inorganic, Alkalinity, total scale, Surface area, South Pacific, Experiment, Temperature, water, Carbon, inorganic, dissolved, Calculated using seacarb after Nisumaa et al 2010, Irradiance, Porites sp., Aragonite saturation state, Biomass, Respiration rate, oxygen, Alkalinity, total, Irradiance, standard error, total, Sample code/label, Metabolic expenditure, pH, Respiration, Spectrophotometric, Temperature, Calcification rate of calcium carbonate, Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error, Sample code label, dissolved, Laboratory experiment, Carbonate ion, Maximum photochemical quantum yield of photosystem II, Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error, Containers and aquaria 20 1000 L or 1 m 2, Respiration rate, Earth System Research, Containers and aquaria (20-1000 L or < 1 m**2), Calcification/Dissolution, Potentiometric titration, Calcite saturation state, water, Growth Morphology, Containers and aquaria (20-1000 L or < 1 m**2), Fluorescence, Benthos, Cnidaria, Alkalinity, total, standard error, Tropical, Ocean Acidification International Coordination Centre OA ICC, Animalia, Bicarbonate ion, Effective photochemical quantum yield, Excitation pressure, maximum, Temperature, water, standard error, Calculated using seacarb after Nisumaa et al. (2010), Primary production Photosynthesis, Species, pH, standard error, Calculated using CO2SYS, Carbonate system computation flag, Primary production/Photosynthesis, pH, total scale, Fugacity of carbon dioxide (water) at sea surface temperature (wet air), Carbon, Fluorescence, maximum, Treatment, Partial pressure of carbon dioxide water at sea surface temperature wet air, Aragonite saturation state, standard error, Carbon dioxide, Growth/Morphology, Single species, Calcification Dissolution, Fugacity of carbon dioxide water at sea surface temperature wet air, Benthic animals, Coast and continental shelf, oxygen, Porites sp
Ocean Acidification International Coordination Centre (OA-ICC), Salinity, inorganic, Alkalinity, total scale, Surface area, South Pacific, Experiment, Temperature, water, Carbon, inorganic, dissolved, Calculated using seacarb after Nisumaa et al 2010, Irradiance, Porites sp., Aragonite saturation state, Biomass, Respiration rate, oxygen, Alkalinity, total, Irradiance, standard error, total, Sample code/label, Metabolic expenditure, pH, Respiration, Spectrophotometric, Temperature, Calcification rate of calcium carbonate, Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error, Sample code label, dissolved, Laboratory experiment, Carbonate ion, Maximum photochemical quantum yield of photosystem II, Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error, Containers and aquaria 20 1000 L or 1 m 2, Respiration rate, Earth System Research, Containers and aquaria (20-1000 L or < 1 m**2), Calcification/Dissolution, Potentiometric titration, Calcite saturation state, water, Growth Morphology, Containers and aquaria (20-1000 L or < 1 m**2), Fluorescence, Benthos, Cnidaria, Alkalinity, total, standard error, Tropical, Ocean Acidification International Coordination Centre OA ICC, Animalia, Bicarbonate ion, Effective photochemical quantum yield, Excitation pressure, maximum, Temperature, water, standard error, Calculated using seacarb after Nisumaa et al. (2010), Primary production Photosynthesis, Species, pH, standard error, Calculated using CO2SYS, Carbonate system computation flag, Primary production/Photosynthesis, pH, total scale, Fugacity of carbon dioxide (water) at sea surface temperature (wet air), Carbon, Fluorescence, maximum, Treatment, Partial pressure of carbon dioxide water at sea surface temperature wet air, Aragonite saturation state, standard error, Carbon dioxide, Growth/Morphology, Single species, Calcification Dissolution, Fugacity of carbon dioxide water at sea surface temperature wet air, Benthic animals, Coast and continental shelf, oxygen, Porites sp
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