Seawater carbonate chemistry and abundance and counts of calcifiers in nets and sediment traps ...

• Main Authors: Lischka, Silke, Stange, Paul, 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; Other studied parameter or process; Pelagos; Temperate; Event label; Type of study; Identification; Mesocosm label; DATE/TIME; Day of experiment; Time in days; Treatment partial pressure of carbon dioxide; DEPTH, water, experiment; Pteropoda; Heteropoda; Globigerinidae; Orbulina universa, sexual stage; Depth, top/min; Depth, bottom/max; Carbon, inorganic, dissolved; Alkalinity, total; Salinity; Temperature, water; pH; Partial pressure of carbon dioxide water at sea surface temperature wet air; Calcite saturation state; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; 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; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.959575; https://doi.pangaea.de/10.1594/PANGAEA.959575

Planktonic Foraminifera and thecosome pteropods are major producers of calcite and aragonite in the ocean and play an important role for pelagic carbonate flux. The responses of planktonic foraminifers to ocean acidification (OA) are variable among the species tested and so far do not allow for reliable conclusion. Thecosome pteropods respond with reduced calcification and shell dissolution to OA and are considered at high risk especially at high latitudes. The present investigation was part of a large-scale in situ mesocosm experiment in the oligotrophic waters of the eastern subtropical North Atlantic. Over 62 days, we measured the abundance and vertical flux of pelagic foraminifers and thecosome pteropods as part of a natural plankton community over a range of OA scenarios. A bloom phase was initiated by the introduction of deep-water collected from approx. 650 m depth simulating a natural up-welling event. Foraminifers occurred throughout the entire experiment in both the water column and the sediment ... : 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 2023-05-31. ...