Seawater carbonate chemistry and biological processes of zooplankton Amphiascoides atopus and Schizopera knabeni during experiments, 2010, supplement to: Pascal, Pierre-Yves; Fleeger, J W; Galvez, Fernando; Carman, Kevin R (2010): The toxicological interaction between ocean acidity and metals in coastal meiobenthic copepods. Marine Pollution Bulletin, 60(12), 2201-2208

• Main Authors: Pascal, Pierre-Yves, Fleeger, J W, Galvez, Fernando, Carman, Kevin R
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2010
• Subjects: Amphiascoides atopus; Animalia; Arthropoda; Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Inorganic toxins; Laboratory experiment; Mortality/Survival; North Atlantic; Pelagos; Schizopera knabeni; Single species; Temperate; Zooplankton; Species; Experimental treatment; Salinity; Temperature, water; pH; Alkalinity, total; Copper; Cadmium; Toxic unit; Mortality; Carbonate system computation flag; Carbon dioxide; Partial pressure of carbon dioxide water at sea surface temperature wet air; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; pH meter Oakton; Alkalinity, Gran titration Gran, 1950; ICP-OES, Inductively coupled plasma - optical emission spectrometry; Flame r atomic absorption spectroscopy Varian AA240FS; Calculated using seacarb after Nisumaa et al. 2010; Calculated using CO2SYS; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification; Copepods
• Online Access: https://dx.doi.org/10.1594/pangaea.763298; https://doi.pangaea.de/10.1594/PANGAEA.763298

Increased atmospheric CO2 concentrations are causing greater dissolution of CO2 into seawater, and are ultimately responsible for today's ongoing ocean acidification. We manipulated seawater acidity by addition of HCl and by increasing CO2 concentration and observed that two coastal harpacticoid copepods, Amphiascoides atopus and Schizopera knabeni were both more sensitive to increased acidity when generated by CO2. The present study indicates that copepods living in environments more prone to hypercapnia, such as mudflats where S. knabeni lives, may be less sensitive to future acidification. Ocean acidification is also expected to alter the toxicity of waterborne metals by influencing their speciation in seawater. CO2 enrichment did not affect the free-ion concentration of Cd but did increase the free-ion concentration of Cu. Antagonistic toxicities were observed between CO2 with Cd, Cu and Cu free-ion in A. atopus. This interaction could be due to a competition for H+ and metals for binding sites. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) 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).