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Lischka, Silke; Graeve, Martin; Greenacre, Michael J; Riebesell, Ulf (2021): Lipid dynamics of Arctic pteropods (Limacina spp., Thecosomata) in response to ocean warming and acidification during a seven day incubation experiment: carbonate system. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.935977 (dataset in review), In: Lischka, S et al. (2021): Lipid dynamics of Arctic pteropods (Limacina spp., Thecosomata) in response to ocean warming and acidification during a seven day incubation experiment. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.936072 (dataset in review)

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Abstract:
This dataset contains the results of a lab experiment performed in Ny Ålesund (Arctic, Svalbard, 78° 55′ N, 11° 56′ O) from 22.–29. August 2013. We collected early-stage thecosome pteropods (Limacina spp.) in Kongsfjord to investigate the response of their lipid metabolism (response variables: total lipids, lipid classes, fatty acids, fatty alcohols) to ocean warming and acidification (OWA). Pteropods were collected on August 21 with a 100 µm plankton net (0.2 square meter mouth opening, 1 L cod end) integrated from 300 m depth in Kongsfjord. The OWA experiment was designed to cover end-of the century projections for temperature and pCO2 and included two temperature treatments (3.5°C = mean in situ temperature averaged over the depth range where pteropods where collected from, and 5.5°C resembling a 2°C temperature increase projected for the Arctic Ocean in the upper 100-200 m, Steinacher et al. 2009, https://doi.org/10.5194/bg-6-515-2009) and three pCO2 levels chosen according to the RCP 8.5 scenario (present day = 400 µatm, year 2080 = 750 µatm, and >2100 = 1100 µatm). Temperature treatments were realized in temperature controlled rooms. pCO2 levels were established by bubbling filtered seawater (20 µm filtered) with Wösthoff gas mixing pumps (Wösthoff, Germany). For each treatment level six replicates (one vessel á 300 ml = one experimental unit = one replicate) were established with 200 incubated early-stage pteropods (ca. 300 µm shell length of individual pteropods). To assure that oxygen concentrations in the vessels did not fall below critical saturation levels of oxygen partial pressure for marine mollusks due to respiration of the incubated pteropods, the experimental seawater was changed regularly. Along with the analyzed lipid data, this dataset also includes the carbonate chemistry data of the perturbed experimental seawater and of that in the experimental units (start/end measurements as well as pH development in the experimental units).
Keyword(s):
Arctic; Limacina; lipids; Ocean acidification; ocean warming; pteropods; Thecosomata
Coverage:
Latitude: 78.916660 * Longitude: 11.933330
Date/Time Start: 2013-08-22T00:00:00 * Date/Time End: 2013-08-29T00:00:00
Event(s):
Kongsfjorden_2013 * Latitude: 78.916660 * Longitude: 11.933330 * Date/Time: 2013-08-21T00:00:00 * Method/Device: Plankton net (PLA) * Comment: 100 µm plankton net (0.2 square meter mouth opening, 1 L cod end)
Comment:
Carbonate chemistry data accompanying the ocean warming and acidification perturbation experiment on the response of lipids of Arctic pteropods.
Sample, Fjord: Seawater collected in Kongsfjord at 50 m depth
Sample, Container: Storage container with manipulated seawater (i.e. CO2-manipulated seawater)
SampleID: aCO2, mCO2, hCO2 = ambient, medium, high CO2
SampleID: aT, mT, hT = ambient, medium, high temperature
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Sample code/labelSample labelLischka, SilkeM1–M5: no. of measurement
2ReplicateReplicateLischka, SilkeR1–R6: Replicate incubation dishes
3Treatment: temperatureTreat temp°CLischka, SilkeT_target
4Temperature, water, experimentT water°CLischka, Silke
5Treatment: partial pressure of carbon dioxideTreat pCO2µatmLischka, SilkepCO2_target
6SalinitySalLischka, Silke
7DATE/TIMEDate/TimeLischka, SilkeGeocode
8pHpHLischka, Silketotal scale
9Carbon dioxide, partial pressurepCO2µatmLischka, Silke
10Aragonite saturation stateOmega ArgLischka, Silke
11SilicateSILCATµmol/kgLischka, Silke
12Alkalinity, totalATµmol/kgLischka, Silke
13Bicarbonate ion[HCO3]-meq/lLischka, Silke
14Carbonate ion[CO3]2-µmol/kgLischka, Silke
15Carbon dioxideCO2µmol/kgLischka, Silke
16Carbon, inorganic, dissolvedDICµmol/kgLischka, Silke
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1005 data points

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