Seawater carbonate chemistry and ichthyotoxicity of the dinoflagellate Karlodinium veneficum ...

• Main Authors: Müller, Marius N, Dorantes-Aranda, Juan José, Seger, Andreas, Botana, Marina T, Brandini, Frederico Pereira, Hallegraeff, Gustaaf M
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Bottles or small containers/Aquaria <20 L; Chromista; Growth/Morphology; Karlodinium veneficum; Laboratory experiment; Laboratory strains; Myzozoa; Not applicable; Other studied parameter or process; Pelagos; Phytoplankton; Single species; Type of study; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Treatment; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; pH; pH, standard deviation; Growth rate; Cell density; Salinity; Temperature, water; Irradiance; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Aragonite saturation state; Calcite saturation state; 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.959616; https://doi.pangaea.de/10.1594/PANGAEA.959616

The ichthyotoxic dinoflagellate Karlodinium veneficum has a worldwide distribution and produces highly potent lytic toxins (karlotoxins) that have been associated with massive fish kill events in coastal environments. The capacity of K. veneficum to gain energy from photosynthesis as well as phagotrophy enables cellular maintenance, growth and dispersal under a broad range of environmental conditions. Coastal ecosystems are highly dynamic in light of the prevailing physicochemical conditions, such as seawater carbonate speciation (CO2, HCO3−, and CO32−) and pH. Here, we monitored the growth rate and ichthyotoxicity of K. veneficum in response to a seawater pH gradient. K. veneficum exhibited a significant linear reduction in growth rate with elevated seawater acidity [pH(totalscale) from 8.05 to 7.50]. Ichthyotoxicity was assessed by exposing fish gill cells to K. veneficum extracts and subsequent quantification of gill cell viability via resorufin fluorescence. Extracts of K. veneficum indicated increased ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) 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 2023-06-06. ...