Seawater carbonate chemistry and calcification of two mediterranean cold-water coral species in a laboratory experiment ...

• Main Authors: Movilla, Juancho, Gori, Andrea, Calvo, Eva, Orejas, Covadonga, Lopez-Sanz, Angel, Domínguez-Carrió, Carlos, Grinyó, Jordi, Pelejero, Carles
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Animalia; Benthic animals; Benthos; Calcification/Dissolution; Cnidaria; Containers and aquaria 20-1000 L or < 1 m**2; Deep-sea; Growth/Morphology; Laboratory experiment; Lophelia pertusa; Madrepora oculata; Mediterranean Sea; Single species; Temperate; Incubation duration; Treatment; Identification; Calcification rate of calcium carbonate; Species; Mass; pH; pH, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Salinity; Salinity, standard deviation; Temperature, water; Temperature, water, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbon dioxide; Carbon dioxide, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Spectrophotometric; Potentiometric titration; Calculated using CO2calc; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.833187; https://doi.pangaea.de/10.1594/PANGAEA.833187

Deep-water ecosystems are characterized by relatively low carbonate concentration values and, due to ocean acidification (OA), these habitats might be among the first to be exposed to undersaturated conditions in the forthcoming years. However, until now, very few studies have been conducted to test how cold-water coral (CWC) species react to such changes in the seawater chemistry. The present work aims to investigate the mid-term effect of decreased pH on calcification of the two branching CWC species most widely distributed in the Mediterranean, Lophelia pertusa and Madrepora oculata. No significant effects were observed in the skeletal growth rate, microdensity and porosity of both species after 6 months of exposure. However, while the calcification rate of M. oculata was similar for all colony fragments, a heterogeneous skeletal growth pattern was observed in L. pertusa, the younger nubbins showing higher growth rates than the older ones. A higher energy demand is expected in these young, fast-growing ... : 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 2014-06-05. ...