Individual and population-level responses to ocean acidification, supplement to: Harvey, Ben P; McKeown, Niall J; Rastrick, S P S; Bertolini, Camilla; Foggo, Andy; Graham, Helen; Hall-Spencer, Jason M; Milazzo, Marco; Shaw, Paul W; Small, Daniel; Moore, Pippa J (2016): Individual and population-level responses to ocean acidification. Scientific Reports, 6, 20194

• Main Authors: Harvey, Ben P, McKeown, Niall J, Rastrick, S P S, Bertolini, Camilla, Foggo, Andy, Graham, Helen, Hall-Spencer, Jason M, Milazzo, Marco, Shaw, Paul W, Small, Daniel, Moore, Pippa J
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2016
• Subjects: Animalia; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; CO2 vent; Coast and continental shelf; Field experiment; Hexaplex trunculus; Mediterranean Sea; Mollusca; Respiration; Single species; Temperate; Type; Species; Registration number of species; Uniform resource locator/link to reference; Treatment; Wet mass; Respiration rate, oxygen; Site; Sex; Dry mass; Temperature, water; Temperature, water, standard error; Salinity; Salinity, standard error; Alkalinity, total; Alkalinity, total, standard error; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Carbonate system computation flag; pH; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Aragonite saturation state; Calcite saturation state; Experiment; Potentiometric titration; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; McKeown; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.859531; https://doi.pangaea.de/10.1594/PANGAEA.859531

Ocean acidification is predicted to have detrimental effects on many marine organisms and ecological processes. Despite growing evidence for direct impacts on specific species, few studies have simultaneously considered the effects of ocean acidification on individuals (e.g. consequences for energy budgets and resource partitioning) and population level demographic processes. Here we show that ocean acidification increases energetic demands on gastropods resulting in altered energy allocation, i.e. reduced shell size but increased body mass. When scaled up to the population level, long-term exposure to ocean acidification altered population demography, with evidence of a reduction in the proportion of females in the population and genetic signatures of increased variance in reproductive success among individuals. Such increased variance enhances levels of short-term genetic drift which is predicted to inhibit adaptation. Our study indicates that even against a background of high gene flow, ocean acidification is driving individual- and population-level changes that will impact eco-evolutionary trajectories. : 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 2016-04-12.