Seawater carbonate chemistry and respiratory metabolism of microplankton ...

• Main Authors: Tames-Espinosa, Mayte, Martinez, I, Romero-Kutzner, Vanesa, Coca, Josep, Algueró-Muñiz, Maria, Horn, Henriette G, Ludwig, Andrea, Taucher, Jan, Bach, Lennart Thomas, Riebesell, Ulf, Packard, Ted T, Gómez, May
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Coast and continental shelf; Community composition and diversity; Entire community; Field experiment; Macro-nutrients; Mesocosm or benthocosm; North Atlantic; Pelagos; Respiration; Temperate; Event label; Type; Mesocosm label; DATE/TIME; Day of experiment; Respiration rate, oxygen, potential; Proteins, particulate; Chlorophyll a; Amoeba; Ciliates; Scuticociliates, fractionated; Tintinnida indeterminata; Dinophyceae; Amphidinium; Gymnodinium; Katodinium glaucum; Torodinium sp.; Pronoctiluca sp.; Diplopsalis group indeterminata; Oxytoxum; Protoperidinium sp.; Carbon, inorganic, dissolved; Alkalinity, total; Salinity; Temperature, water; pH; Partial pressure of carbon dioxide water at sea surface temperature wet air; Calcite saturation state; Bicarbonate ion; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Carbonate ion; Aragonite saturation state; Mesocosm experiment; Calculated using seacarb after Nisumaa et al. 2010; KOSMOS_2014; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.925263; https://doi.pangaea.de/10.1594/PANGAEA.925263

In the autumn of 2014, nine large mesocosms were deployed in the oligotrophic subtropical North-Atlantic coastal waters off Gran Canaria (Spain). Their deployment was designed to address the acidification effects of CO2 levels from 400 to 1,400 μatm, on a plankton community experiencing upwelling of nutrient-rich deep water. Among other parameters, chlorophyll a (chl-a), potential respiration (PHi), and biomass in terms of particulate protein (B) were measured in the microplankton community (0.7–50.0 μm) during an oligotrophic phase (Phase I), a phytoplankton-bloom phase (Phase II), and a post-bloom phase (Phase III). Here, we explore the use of the PHi/chl-a ratio in monitoring shifts in the microplankton community composition and its metabolism. PHi/chl-a values below 2.5 μL O2/h/ (μg chl-a) indicated a community dominated by photoautotrophs. When PHi/chl-a ranged higher, between 2.5 and 7.0 μL O2/h/ (μg chl-a), it indicated a mixed community of phytoplankton, microzooplankton and heterotrophic ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2020) 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 2020-11-30. ...