Seawater carbonate chemistry and live coral performance vs. framework dissolution and bioerosion ...

• Main Authors: Büscher, Janina, Form, Armin, Wisshak, Max, Kiko, Rainer, Riebesell, Ulf
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Animalia; Benthic animals; Benthos; Calcification/Dissolution; Cnidaria; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Growth/Morphology; Laboratory experiment; Lophelia pertusa; Mortality/Survival; North Atlantic; Respiration; Single species; Temperate; Temperature; Type; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Morphotype; Interval; Treatment; Group; Replicate; Experimental treatment; Temperature, water; Salinity; Alkalinity, total; Carbon, inorganic, dissolved; Partial pressure of carbon dioxide water at sea surface temperature wet air; Dissolution rate; Respiration rate, oxygen; Mortality; Dry mass; Ash free dry mass; Coral polyp; Carbonate system computation flag; pH; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Aragonite saturation state; Calcite saturation state; Submersible JAGO; Calculated using seacarb after Nisumaa et al. 2010; POS455; Poseidon; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.952909; https://doi.pangaea.de/10.1594/PANGAEA.952909

Physiological sensitivity of cold-water corals to ocean change is far less understood than of tropical corals and very little is known about the impacts of ocean acidification and warming on degradative processes of dead coral framework. In a 13-month laboratory experiment, we examined the interactive effects of gradually increasing temperature and pCO2 levels on survival, growth, and respiration of two prominent color morphotypes (colormorphs) of the framework-forming cold-water coral Lophelia pertusa, as well as bioerosion and dissolution of dead framework. Calcification rates tended to increase with warming, showing temperature optima at ~ 14°C (white colormorph) and 10–12°C (orange colormorph) and decreased with increasing pCO2. Net dissolution occurred at aragonite undersaturation (ΩAr < 1) at ~ 1000 μatm pCO2. Under combined warming and acidification, the negative effects of acidification on growth were initially mitigated, but at ~ 1600 μatm dissolution prevailed. Respiration rates increased with ... : 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 2022-12-21. ...