Seawater carbonate chemistry and in situ and laboratory measurements of calcification ...

• Main Authors: Wahl, Martin, Schneider Covachã, Sabrina, Saderne, Vincent, Hiebenthal, Claas, Müller, Jens Daniel, Pansch, Christian, Sawall, Yvonne
• Format: Dataset
• Language: English
• Published: PANGAEA 2018
• Subjects: Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Chromista; Coast and continental shelf; Fucus vesiculosus; Laboratory experiment; Macroalgae; Mollusca; Mytilus edulis; North Atlantic; Ochrophyta; Single species; Species interaction; Temperate; Event label; Type; Species; Registration number of species; Uniform resource locator/link to reference; Experiment; Replicate; Identification; Treatment; Treatment partial pressure of carbon dioxide; Phase; pH; Net calcification rate of calcium carbonate; Oxygen; Temperature, water; Salinity; Alkalinity, total; Carbon, inorganic, dissolved; Partial pressure of carbon dioxide water at sea surface temperature wet air; Calcite saturation state; Aragonite saturation state; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Water sample; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.942326; https://doi.pangaea.de/10.1594/PANGAEA.942326

Ocean acidification (OA) is generally assumed to negatively impact calcification rates of marine organisms. At a local scale however, biological activity of macrophytes may generate pH fluctuations with rates of change that are orders of magnitude larger than the long-term trend predicted for the open ocean. These fluctuations may in turn impact benthic calcifiers in the vicinity. Combining laboratory, mesocosm and field studies, such interactions between OA, the brown alga Fucus vesiculosus, the sea grass Zostera marina and the blue mussel Mytilus edulis were investigated at spatial scales from decimetres to 100s of meters in the western Baltic. Macrophytes increased the overall mean pH of the habitat by up to 0.3 units relative to macrophyte- free, but otherwise similar, habitats and imposed diurnal pH fluctuations with amplitudes ranging from 0.3 to more than 1 pH unit. These amplitudes and their impact on mussel calcification tended to increase with increasing macrophyte biomass to bulk water ratio. At ... : 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 2022-3-14. ...