Seawater carbonate chemistry and endosymbiont density, photosynthesis and net calcification rates of reef-building coral Pocillopora damicornis ...

• Main Authors: Brown, Kristen T, Mello-Athayde, Matheus A, Sampayo, Eugenia M, Chai, Aaron, Dove, Sophie, Barott, Katie L
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Animalia; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Cnidaria; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Growth/Morphology; Laboratory experiment; Other; Pocillopora damicornis; Primary production/Photosynthesis; Respiration; Single species; South Pacific; Tropical; Type; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Origin; Treatment; Calcification rate; Calcification rate, standard deviation; Calcification rate, standard error; Replicates; Growth rate; Growth rate, standard deviation; Growth rate, standard error; Calcium carbonate; Calcium carbonate, standard deviation; Calcium carbonate, standard error; Proteins per surface area; Proteins, standard deviation; Proteins, standard error; Symbiont cell density; Density, standard deviation; Symbiont cell density, standard error; Chlorophyll a; Chlorophyll a, standard deviation; Chlorophyll a, standard error; Respiration rate, oxygen; Respiration rate, oxygen, standard deviation; Respiration rate, oxygen, standard error; Net photosynthesis rate, oxygen; Net photosynthesis rate, standard deviation; Net photosynthesis rate, oxygen, standard error; Ratio; Ratio, standard deviation; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.953058; https://doi.pangaea.de/10.1594/PANGAEA.953058

Ocean acidification is a growing threat to coral growth and the accretion of coral reef ecosystems. Corals inhabiting environments that already endure extreme diel pCO2 fluctuations, however, may represent acidification-resilient populations capable of persisting on future reefs. Here, we examined the impact of pCO2 variability on the reef-building coral Pocillopora damicornis originating from reefs with contrasting environmental histories (variable reef flat versus stable reef slope) following reciprocal exposure to stable (218 ± 9) or variable (911 ± 31) diel pCO2 amplitude (μtam) in aquaria over eight weeks. Endosymbiont density, photosynthesis and net calcification rates differed between origins but not treatment, whereas primary calcification (extension) was affected by both origin and acclimatization to novel pCO2 conditions. At the cellular level, corals from the variable reef flat exhibited less intracellular pH (pHi) acidosis and faster pHi recovery rates in response to experimental acidification ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) 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 2022-12-22. ...