Seawater carbonate chemistry and pulsation and growth of the widespread soft coral Xenia umbellata ...

• Main Authors: Tilstra, Arjen, Braxator, Lorena, Thobor, Bianca, Mezger, Selma D, Hill, Claudia E L, El-Khaled, Yusuf C, Caporale, Giulia, Kim, Sohyoung, Wild, Christian
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: Animalia; Benthic animals; Biomass/Abundance/Elemental composition; Cnidaria; Containers and aquaria 20-1000 L or < 1 m**2; Growth/Morphology; Laboratory experiment; Laboratory strains; Not applicable; Other studied parameter or process; Primary production/Photosynthesis; Respiration; Single species; Xenia umbellata; Type of study; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Identification; Day of experiment; Replicate; Pulsation rate; Polyp number; Pixel value; Respiration rate, oxygen; Net photosynthesis rate, oxygen; Gross photosynthesis rate, oxygen; Symbiont cell density; Cell density; Chlorophyll a per cell; δ15N; δ13C; Nitrogen; Carbon; Carbon/Nitrogen ratio; Treatment; Ammonium; Nitrate; Nitrite; Phosphate; Carbonate hardness of water; Alkalinity, total; Magnesium; Calcium; Temperature, water; Salinity; pH; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.964548; https://doi.pangaea.de/10.1594/PANGAEA.964548

We carried out a manipulative aquarium experiment for 21 days to study the response of the widespread pulsating soft coral Xenia umbellata to simulated OA conditions. We gradually decreased the pH from ambient (~8.3) to three consecutive 7-day long pH treatments of 8.0, 7.8, and 7.6, using a CO2 dosing system. Monitored response variables included pulsation rate, specific growth rate, visual coloration, survival, Symbiodiniaceae cell densities and chlorophyll a content, photosynthesis and respiration, and finally stable isotopes of carbon (C) and nitrogen (N) as well as CN content. ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) 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 2024-01-03. ...