Hidden impacts of ocean acidification to live and dead coral framework ...

• Main Authors: Hennige, Sebastian J, Wicks, L C, Kamenos, N A, Perna, G, Findlay, Helen S, Roberts, J Murray
• Format: Dataset
• Language: English
• Published: PANGAEA 2015
• Subjects: Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Cnidaria; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Lophelia pertusa; North Atlantic; Other studied parameter or process; Single species; Temperate; Temperature; Type; Species; Registration number of species; Uniform resource locator/link to reference; Treatment; Incubation duration; Calcification rate of calcium carbonate; Replicate; Width; Height; Thickness; Area; Height/width ratio; Sample ID; Group; Peak centre; Full width at half maximum; Peak height; Percentage; Peak area; Breaking load; Diameter; Ratio; Identification; Respiration rate, oxygen; Alkalinity, total; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; pH; pH, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.860558; https://doi.pangaea.de/10.1594/PANGAEA.860558

Cold-water corals, such as Lophelia pertusa, are key habitat-forming organisms found throughout the world's oceans to 3000 m deep. The complex three-dimensional framework made by these vulnerable marine ecosystems support high biodiversity and commercially important species. Given their importance, a key question is how both the living and the dead framework will fare under projected climate change. Here, we demonstrate that over 12 months L. pertusa can physiologically acclimate to increased CO2, showing sustained net calcification. However, their new skeletal structure changes and exhibits decreased crystallographic and molecular-scale bonding organization. Although physiological acclimatization was evident, we also demonstrate that there is a negative correlation between increasing CO2 levels and breaking strength of exposed framework (approx. 20-30% weaker after 12 months), meaning the exposed bases of reefs will be less effective 'load-bearers', and will become more susceptible to bioerosion and ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) 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 2016-05-16. ...