Seawater carbonate chemistry and the growth response of the toxic dinoflagellate Karenia selliformis from Patagonian waters of Chile ...

• Main Authors: Vellojin, Jurleys P, Mardones, Jorge I, Vargas, Valentina, Leal, Pablo P, Corredor-Acosta, Andrea, Iriarte, Jose Luis
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Chromista; Coast and continental shelf; Growth/Morphology; Karenia selliformis; Laboratory experiment; Myzozoa; Pelagos; Phytoplankton; Single species; South Pacific; Temperate; Temperature; Type of study; Species; Treatment; Replicate; Treatment temperature; Treatment pH; Salinity; Cell density; Growth rate; pH; Alkalinity, total; Carbon dioxide; Carbon, inorganic, dissolved; Bicarbonate ion; Carbonate ion; Partial pressure of carbon dioxide water at sea surface temperature wet air; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Aragonite saturation state; Calcite saturation state; Experiment; Potentiometric; Potentiometric titration; Calculated using SWCO2 Hunter, 2007; 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.960040; https://doi.pangaea.de/10.1594/PANGAEA.960040

Northern Patagonia (41–44°S) is affected by climatic, hydrological and oceanographic anomalies, which in synergy with processes such as global warming and acidification of the coastal oceans may affect the frequency and intensity of harmful algal blooms (HABs). Greater frequency of HABs has been reported in the southeastern Pacific Ocean, including blooms of the toxic dinoflagellate Karenia selliformis, causing massive mortality of marine fauna in the oceanic and coastal areas of Patagonia. The objective of this study was to determine the effects of temperature and pH interaction on the growth of K. selliformis (strain CREAN_KS02), since these factors have wide seasonal fluctuations in the Patagonian fjord ecosystem. The CREAN_KS02 strain isolated from the Aysén Region (43°S) was used in a factorial experiment with five pH levels (7.0, 7.4, 7.7, 8.1 and 9.0) and two temperatures (12 and 17 °C) during a period of 18–21 days. Results indicated a significant effect of temperature and pH interaction on growth ... : 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 2023-06-25. ...