Seawater carbonate chemistry and plankton community structure during a winter-tosummer succession ...

• Main Authors: Taucher, Jan, Haunost, Mathias, Boxhammer, Tim, Bach, Lennart Thomas, Algueró-Muñiz, Maria, Riebesell, Ulf
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Coast and continental shelf; Community composition and diversity; Entire community; Field experiment; Mesocosm or benthocosm; North Atlantic; Pelagos; Temperate; Event label; Type of study; Sample code/label; Day of experiment; Treatment; Equivalent spherical diameter; Particle size spectrum; Particle concentration; Plankton, biomass, dry mass; Temperature, water; Salinity; Carbon, inorganic, dissolved; pH; Partial pressure of carbon dioxide water at sea surface temperature wet air; Phosphate; Silicate; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Alkalinity, total; Aragonite saturation state; Calcite saturation state; Mesocosm experiment; Hand-operated CTD Sea&Sun Technology, CTD 60M; Coulometric titration; Spectrophotometric; Calculated; KOSMOS 2013; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.958012; https://doi.pangaea.de/10.1594/PANGAEA.958012

Plankton communities play a key role in the marine food web and are expected to be highly sensitive to ongoing environmental change. Oceanic uptake of anthropogenic carbon dioxide (CO2) causes pronounced shifts in marine carbonate chemistry and a decrease in seawater pH. These changes–summarized by the term ocean acidification (OA)–can significantly affect the physiology of planktonic organisms. However, studies on the response of entire plankton communities to OA, which also include indirect effects via food-web interactions, are still relatively rare. Thus, it is presently unclear how OA could affect the functioning of entire ecosystems and biogeochemical element cycles. In this study, we report from a long-term in situ mesocosm experiment, where we investigated the response of natural plankton communities in temperate waters (Gullmarfjord, Sweden) to elevated CO2 concentrations and OA as expected for the end of the century (~760 μatm pCO2). Based on a plankton-imaging approach, we examined size structure, ... : 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 2023-04-26. ...