Seawater carbonate chemistry and skeletal density of hardground-forming high-latitude Crustose Coralline Algae ...

• Main Authors: Williams, Branwen, Chan, P T W, Westfield, Isaac T, Rasher, D B, Ries, Justin B
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Benthos; Calcification/Dissolution; Clathromorphum compactum; Clathromorphum nereostratum; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Laboratory experiment; Macroalgae; North Atlantic; North Pacific; Plantae; Rhodophyta; Single species; Temperate; Temperature; Event label; Type; Species; Registration number of species; Uniform resource locator/link to reference; Specimen number; Treatment temperature; Treatment partial pressure of carbon dioxide; Location; Identification; Subsample ID; Density; Temperature, water; Temperature, water, standard error; Salinity; Salinity, 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; pH; pH, standard error; Bicarbonate ion; Bicarbonate ion, standard error; Carbonate ion; Carbonate ion, standard error; Calcite saturation state; Calcite saturation state, standard error; Carbon, inorganic, dissolved; Alkalinity, total; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Aragonite saturation state; Experiment; Calculated using CO2SYS; Potentiometric; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.935477; https://doi.pangaea.de/10.1594/PANGAEA.935477

Crustose coralline algae (CCA) function as foundation species by creating marine carbonate hardground habitats. High‐latitude species may be vulnerable to regional warming and acidification. Here, we report the results of an experiment investigating the impacts of CO2‐induced acidification (pCO2 350, 490, 890, 3200 µatm) and temperature (6.5, 8.5, 12.5°C) on the skeletal density of two species of high‐latitude CCA: Clathromorphum compactum (CC) and C. nereostratum (CN). Skeletal density of both species significantly declined with pCO2. In CN, the density of previously deposited skeleton declined in the highest pCO2 treatment. This species was also unable to precipitate new skeleton at 12.5°C, suggesting that CN will be particularly sensitive to future warming and acidification. The decline in skeletal density exhibited by both species under future pCO2 conditions could reduce their skeletal strength, potentially rendering them more vulnerable to disturbance, and impairing their production of critical habitat ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) 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 2021-09-03. ...