Seawater carbonate chemistry and biological processes during experiments with barnacle Semibalanus balanoides, 2010, supplement to: Findlay, Helen S; Kendall, Michael A; Spicer, John I; Widdicombe, Stephen (2010): Relative influences of ocean acidification and temperature on intertidal barnacle post-larvae at the northern edge of their geographic distribution. Estuarine, Coastal and Shelf Science, 88(4), 675-682

• Main Authors: Findlay, Helen S, Kendall, Michael A, Spicer, John I, Widdicombe, Stephen
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2010
• Subjects: Animalia; Arctic; Arthropoda; Benthic animals; Benthos; Calcification/Dissolution; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Growth/Morphology; Laboratory experiment; Mortality/Survival; Polar; Semibalanus balanoides; Single species; Temperature; Experimental treatment; Experiment day; Salinity; Temperature, water; Temperature, standard deviation; pH; pH, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Carbon dioxide, partial pressure, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Alkalinity, total; Alkalinity, total, 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; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Semibalanus balanoides, length, mean increase; Growth rate; Semibalanus balanoides, length; Survival; Semibalanus balanoides, Calcium in shell; Semibalanus balanoides, Magnesium in shell; Calcification rate of calcium carbonate; Conductivity meter WTW, Weilheim, Gemany; pH meter Mettler Toledo, USA; Infrared CO2/H2O gas analyzer, non-dispersive, LI-COR type LI-6262; Automated CO2 analyzer CIBA-Corning 965, UK; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; Measured; Calculated; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean Acidification International Coordination Centre OA-ICC; Arctic Ocean; Findlay; Kendall; Toledo; Climate change; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.737438; https://doi.pangaea.de/10.1594/PANGAEA.737438

The Arctic Ocean and its associated ecosystems face numerous challenges over the coming century. Increasing atmospheric CO2 is causing increasing warming and ice melting as well as a concomitant change in ocean chemistry ("ocean acidification"). As temperature increases it is expected that many temperate species will expand their geographic distribution northwards to follow this thermal shift; however with the addition of ocean acidification this transition may not be so straightforward. Here we investigate the potential impacts of ocean acidification and climate change on populations of an intertidal species, in this case the barnacle Semibalanus balanoides, at the northern edge of its range. Growth and development of metamorphosing post-larvae were negatively impacted at lower pH (pH 7.7) compared to the control (pH 8.1) but were not affected by elevated temperature (+4 °C). The mineral composition of the shells did not alter under any of the treatments. The combination of reduced growth and maintained mineral content suggests that there may have been a change in the energetic balance of the exposed animals. In undersaturated conditions more mineral is expected to dissolve from the shell and hence more energy would be required to maintain the mineral integrity. Any energy that would normally be invested into growth could be reallocated and hence organisms growing in lowered pH grow slower and end up smaller than individuals grown in higher pH conditions. The idea of reallocation of resources under different conditions of pH requires further investigation. However, there could be long-term implications on the fitness of these barnacles, which in turn may prevent them from successfully colonising new areas. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) 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).