Seawater carbonate chemistry during experiments with Littorina littorea, 2007, supplement to: Bibby, Ruth; Cleall-Harding, Polly; Rundle, Simon; Widdicombe, Stephen; Spicer, John I (2007): Ocean acidification disrupts induced defences in the intertidal gastropod Littorina littorea. Biology Letters, 3(6), 699-701

• Main Authors: Bibby, Ruth, Cleall-Harding, Polly, Rundle, Simon, Widdicombe, Stephen, Spicer, John I
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2007
• Subjects: Animalia; Behaviour; Benthic animals; Benthos; Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Littorina littorea; Mollusca; North Atlantic; Respiration; Single species; Temperate; Experimental treatment; Carbonate system computation flag; Salinity; Temperature, water; pH; Alkalinity, total; Carbon, inorganic, dissolved; Carbon dioxide; Bicarbonate ion; Carbonate ion; Partial pressure of carbon dioxide water at sea surface temperature wet air; Fugacity of carbon dioxide in seawater; Aragonite saturation state; Calcite saturation state; Littorina littorea shell thickness increase; Oxygen consumption; Littorina littorea stress avoidance responce; Experiment; Calculated using seacarb after Nisumaa et al. 2010; pH, Electrode; Automated CO2 analyzer CIBA-Corning 965, UK; Measured; Strathkelvin 781 O2 electrode; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean Acidification International Coordination Centre OA-ICC; Bibby; Harding; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.716837; https://doi.pangaea.de/10.1594/PANGAEA.716837

We demonstrate that acidified seawater can have indirect biological effects by disrupting the capability of organisms to express induced defences, hence, increasing their vulnerability to predation. The intertidal gastropod Littorina littorea produced thicker shells in the presence of predation (crab) cues but this response was disrupted at low seawater pH. This response was accompanied by a marked depression in metabolic rate (hypometabolism) under the joint stress of high predation risk and reduced pH. However, snails in this treatment apparently compensated for a lack of morphological defence, by increasing their avoidance behaviour, which, in turn, could affect their interactions with other organisms. Together, these findings suggest that biological effects from ocean acidification may be complex and extend beyond simple direct effects. : 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).