Seawater carbonate chemistry and growth rate of Arctica islandica clams ...

• Main Authors: Liu, Yiwei, Wanamaker Jr., Alan D, Aciego, Sarah M, Searles, Ian, Hangstad, Thor Arne, Chierici, Melissa, Carroll, Michael L
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Animalia; Arctica islandica; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Growth/Morphology; Laboratory experiment; Mollusca; North Atlantic; Polar; Single species; Type; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; pH; Aragonite saturation state; Height; Age; Growth; Identification; Temperature, water; Temperature, water, standard deviation; Salinity; Salinity, standard deviation; pH, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Aragonite saturation state, standard deviation; Number of specimens; Shell; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Fugacity of carbon dioxide water at sea surface temperature wet air; Fugacity of carbon dioxide in seawater, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Experiment; Potentiometric; Potentiometric titration; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.957129; https://doi.pangaea.de/10.1594/PANGAEA.957129

Ocean acidification (OA) directly impacts marine calcifying organisms including ecologically and commercially important shellfish species such as Arctica islandica (A. islandica). To test whether documented growth resilience of A. islandica to OA is a general response across ages and populations or a function of adaptation to local habitat, we cultured juvenile and adult clams collected from an environment with little pH variation under four pH levels (7.5, 7.7, 7.9, and 8.1) for three months and integrated our understanding with relevant literature. The average shell growth over the experiment among all (69) individuals was 57 ± 55 μm, and there were no statistically significant differences in growth among pH treatments, including the control treatment, despite the general growth rate differences between juveniles and adults. Our results show that A. islandica can maintain its shell growth even in aragonite undersaturated (Ω < 1) conditions (0.65 and 0.83 for pH 7.5 and 7.7 treatments, respectively), ... : 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 2023-03-29. ...