Lischka, Silke; Stange, Paul; Riebesell, Ulf (2023): Seawater carbonate chemistry and abundance and counts of calcifiers in nets and sediment traps [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.959575
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Abstract:
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 traps. Pteropods were present only in small numbers and disappeared after the first two weeks of the experiment. No significant CO2 related effects were observed for foraminifers, but cumulative sedimentary flux was reduced at the highest CO2 concentrations. This flux reduction was most likely accompanying an observed flux reduction of particulate organic matter (POM) so that less foraminifers were intercepted and transported downward.
Keyword(s):
Supplement to:
Lischka, Silke; Stange, Paul; Riebesell, Ulf (2018): Response of Pelagic Calcifiers (Foraminifera, Thecosomata) to Ocean Acidification During Oligotrophic and Simulated Up-Welling Conditions in the Subtropical North Atlantic Off Gran Canaria. Frontiers in Marine Science, 5:379, https://doi.org/10.3389/fmars.2018.00379
Related to:
Taucher, Jan; Bach, Lennart Thomas (2018): KOSMOS 2014 mesocosm study: carbonate system. PANGAEA, https://doi.org/10.1594/PANGAEA.889746
Source:
Lischka, Silke; Stange, Paul; Riebesell, Ulf (2018): KOSMOS 2014 mesocosm study: Abundance and flux patterns of pelagic calcifiers (Foraminifera, Thecosomata) in response to ocean acidification during oligotrophic and simulated up-welling conditions in the subtropical North Atlantic off Gran Canaria. PANGAEA, https://doi.org/10.1594/PANGAEA.895368
Documentation:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2022): seacarb: seawater carbonate chemistry with R. R package version 3.3.1. https://cran.r-project.org/web/packages/seacarb/index.html
Project(s):
Coverage:
Latitude: 27.928060 * Longitude: -15.365280
Date/Time Start: 2014-09-28T00:00:00 * Date/Time End: 2014-11-25T00:00:00
Minimum DEPTH, water, experiment: 13 m * Maximum DEPTH, water, experiment: 13 m
Event(s):
KOSMOS_2014_Atlantic-Reference * Latitude: 27.928060 * Longitude: -15.365280 * Date/Time Start: 2014-09-27T00:00:00 * Date/Time End: 2014-11-27T23:59:00 * Location: Subtropical North Atlantic * Campaign: KOSMOS_2014 * Method/Device: Mesocosm experiment (MESO)
KOSMOS_2014_Mesocosm-M1 * Latitude: 27.928060 * Longitude: -15.365280 * Date/Time Start: 2014-09-27T00:00:00 * Date/Time End: 2014-11-27T23:59:00 * Location: Subtropical North Atlantic * Campaign: KOSMOS_2014 * Method/Device: Mesocosm experiment (MESO)
KOSMOS_2014_Mesocosm-M2 * Latitude: 27.928060 * Longitude: -15.365280 * Date/Time Start: 2014-09-27T00:00:00 * Date/Time End: 2014-11-27T23:59:00 * Location: Subtropical North Atlantic * Campaign: KOSMOS_2014 * Method/Device: Mesocosm experiment (MESO)
Comment:
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.
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
10390 data points
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