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


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).

Related Identifier
Metadata Access
Creator Bibby, Ruth; Cleall-Harding, Polly; Rundle, Simon; Widdicombe, Stephen; Spicer, John I
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Contributor Nisumaa, Anne-Marin
Publication Year 2007
Funding Reference Seventh Framework Programme, 211384; Sixth Framework Programme, 511106
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 72 data points
Discipline Earth System Research