Acclimatization of the crustose coralline alga Porolithon onkodes to variable pCO2 ...

• Main Authors: Johnson, Maggie Dorothy, Moriarty, Vincent, Carpenter, Robert C
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Benthos; Calcification/Dissolution; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Laboratory experiment; Macroalgae; Plantae; Porolithon onkodes; Primary production/Photosynthesis; Respiration; Rhodophyta; Single species; South Pacific; Tropical; Species; Treatment; Calcification rate of calcium carbonate; Calcification rate, standard error; Gross photosynthesis rate, oxygen; Gross photosynthesis rate, oxygen, standard error; Respiration rate, oxygen; Respiration rate, oxygen, standard error; Net photosynthesis rate, oxygen; Net photosynthesis rate, oxygen, standard error; Temperature, water; Temperature, water, standard error; Salinity; Salinity, standard error; Irradiance; Irradiance, standard error; pH; pH, standard error; Alkalinity, total; Alkalinity, total, standard error; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air, standard error; Calcite saturation state; Calcite saturation state, standard error; Aragonite saturation state; Aragonite saturation state, standard error; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Spectrophotometric; Potentiometric titration; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.835310; https://doi.pangaea.de/10.1594/PANGAEA.835310

Ocean acidification (OA) has important implications for the persistence of coral reef ecosystems, due to potentially negative effects on biomineralization. Many coral reefs are dynamic with respect to carbonate chemistry, and experience fluctuations in pCO2 that exceed OA projections for the near future. To understand the influence of dynamic pCO2 on an important reef calcifier, we tested the response of the crustose coralline alga Porolithon onkodes to oscillating pCO2. Individuals were exposed to ambient (400 µatm), high (660 µatm), or variable pCO2 (oscillating between 400/660 µatm) treatments for 14 days. To explore the potential for coralline acclimatization, we collected individuals from low and high pCO2 variability sites (upstream and downstream respectively) on a back reef characterized by unidirectional water flow in Moorea, French Polynesia. We quantified the effects of treatment on algal calcification by measuring the change in buoyant weight, and on algal metabolism by conducting sealed ... : 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 2014-08-27. ...