Seawater carbon chemistry and regeneration, Buds, active generation and old zooids, zooid width, length, orifice width and orifice length of bryozoan Cryptosula pallasiana, supplement to: Lombardi, Chiara; Taylor, Paul D; Cocito, Silvia; Bertolini, Camilla; Calosi, Piero (2017): Low pH conditions impair module capacity to regenerate in a calcified colonial invertebrate, the bryozoan Cryptosula pallasiana. Marine Environmental Research, 125, 110-117

• Main Authors: Lombardi, Chiara, Taylor, Paul D, Cocito, Silvia, Bertolini, Camilla, Calosi, Piero
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2017
• Subjects: Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Cryptosula pallasiana; Growth/Morphology; Laboratory experiment; North Atlantic; Reproduction; FOS Medical biotechnology; Single species; Temperate; Type; Species; Registration number of species; Uniform resource locator/link to reference; Experiment duration; Treatment; Description; Ratio; Identification; Number; Comment; Zooid, length; Zooid, width; Length; Width; pH; pH, standard error; Temperature, water; Temperature, water, standard error; Salinity; Salinity, standard error; Alkalinity, total; Alkalinity, total, standard error; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air, standard error; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Bicarbonate ion; Bicarbonate ion, standard error; Carbonate ion; Carbonate ion, standard error; Calcite saturation state; Calcite saturation state, standard error; Aragonite saturation state; Aragonite saturation state, standard error; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Potentiometric; Potentiometric titration; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Silvia; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.877961; https://doi.pangaea.de/10.1594/PANGAEA.877961

Many aquatic animals grow into colonies of repeated, genetically identical, modules (zooids). Zooid interconnections enable colonies to behave as integrated functional units, while plastic responses to environmental changes may affect individual zooids. Plasticity includes the variable partitioning of resources to sexual reproduction, colony growth and maintenance. Maintenance often involves regeneration, which is also a routine part of the life history in some organisms, such as bryozoans. Here we investigate changes in regenerative capacity in the encrusting bryozoan Cryptosula pallasiana when cultured at different seawater pCO2 levels. The proportion of active zooids showing polypide regeneration was highest at current oceanic pH (8.1), but decreased progressively as pH declined below that value, reaching a six-fold reduction at pH 7.0. The zone of budding of new zooids at the colony periphery declined in size below pH 7.7. Under elevated pCO2 conditions, already experienced sporadically in coastal areas, skeletal corrosion was accompanied by the proportional reallocation of resources from polypide regeneration in old zooids to the budding of new zooids at the edge of the colony. Thus, future ocean acidification can affect colonial organisms by changing how they allocate resources, with potentially profound impacts on life-history patterns and ecological interactions. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) 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 2017-07-19.