Fahl, Kirsten (2023): Highly branched isoprenoid, sterol, and fatty acid fluxes of sediment trap FEVI10 and FEVI13 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.959960
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Abstract:
Two long-term mooring systems with two cone-shaped multi-sampling traps (FEVI10 and FEVI13; 2005-2007; SMT 230 K.U.M.; sampling area 0.5m2) was deployed in the HAUSGARTEN area at 79°01.00N, 04°20,62E (FEVI10) and 79°00,82N, 04° 20.5E (FEVI13).
The highly branched isoprenoid IP25 as indicator for sea-ice distribution, the sterols campe- and sitosterol as proxies for terrestrial input, and the diatom-specific fatty acids (C16:1, C20:5) as well as the dinoflagellate-specific fatty acids (18:4, 22:6) were analysed by gas chromatography (GC) and/or gas chromatography-mass spectrometry (GC-MS). Biomarker analyses of campesterol (24-methylcholest-5-en-3β-ol), sitosterol (24-ethylcholest-5-en-3β-ol), fatty acids and IP25 were extracted with dichlormethane/methanol (1:1, v/v) and dichlormethane using separating funnels. For quantification of the lipid compounds, the internal standards 7-hexylnonadecane, C36 n-alkane, 19:0 FAME, and androstanol (5α-androstan-3β-ol, 20 μl/sample) were added prior to further analytical steps. The different compounds (IP25 and sterols) were separated via open column chromatography (SiO2) using n-hexane (for the hydrocarbons) and ethyl acetate/n-hexane (20:80 v/v for sterols) as eluent.
The individual sterols were silylated with 500 μl BSTFA (bis-trimethylsilyl-trifluoroacet-amide) at 60°C for 2 h. After extraction with hexane, analyses were carried out. IP25 was quantified using its molecular ion m/z 350 in relation to the abundant fragment ion m/z 266 of 7-hexylnonadecane and by means of an external calibration curve (R2 = 0.9989) to balance the different responses of the used ions. Campesterol and sitosterol were quantified as trimethylsilyl ethers using the molecular ions m/z 472, and m/z 486, respectively, in relation to the molecular ion m/z 348 of androstanol. The fatty acids were qualified using an external standard mixture and quantified by 19:0 FAME.
Related to:
Salter, Ian; Bauerfeind, Eduard; Fahl, Kirsten; Iversen, Morten Hvitfeldt; Lalande, Catherine; Ramondenc, Simon; von Appen, Wilken-Jon; Wekerle, Claudia; Nöthig, Eva-Maria (2023): Interannual variability (2000–2013) of mesopelagic and bathypelagic particle fluxes in relation to variable sea ice cover in the eastern Fram Strait. Frontiers in Earth Science, 11, 1210213, https://doi.org/10.3389/feart.2023.1210213
Project(s):
Coverage:
Median Latitude: 79.019860 * Median Longitude: 4.343055 * South-bound Latitude: 79.016940 * West-bound Longitude: 4.341670 * North-bound Latitude: 79.022780 * East-bound Longitude: 4.344440
Date/Time Start: 2005-08-25T00:00:00 * Date/Time End: 2007-06-20T00:00:00
Minimum DEPTH, water: 179 m * Maximum DEPTH, water: 230 m
Event(s):
FEVI10 (PS68/263-1, HGIV) * Latitude: 79.016940 * Longitude: 4.344440 * Date/Time Start: 2005-08-25T00:00:00 * Date/Time End: 2006-08-20T00:00:00 * Elevation: -2530.0 m * Location: North Greenland Sea * Campaign: ARK-XXI/1b (PS68) * Basis: Polarstern * Method/Device: Mooring (long time) (MOORY)
FEVI13 (MSM2/787-1, HGIV) * Latitude: 79.022780 * Longitude: 4.341670 * Date/Time Start: 2006-08-26T00:00:00 * Date/Time End: 2007-06-20T00:00:00 * Elevation: -2540.0 m * Campaign: MSM02/4 * Basis: Maria S. Merian * Method/Device: Mooring (long time) (MOORY)
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Event label | Event | Fahl, Kirsten | |||
2 | DEPTH, water | Depth water | m | Fahl, Kirsten | Geocode – trap depth | |
3 | Cup | Cup | Fahl, Kirsten | |||
4 | DATE/TIME | Date/Time | Fahl, Kirsten | Geocode – start | ||
5 | DATE/TIME | Date/Time | Fahl, Kirsten | Geocode – end | ||
6 | Duration, number of days | Duration | days | Fahl, Kirsten | ||
7 | Fatty acid, flux | Fatty acid flux | µg/m2/day | Fahl, Kirsten | Gas chromatography | (C16:1)+(C20:5) flux |
8 | Fatty acid, flux | Fatty acid flux | µg/m2/day | Fahl, Kirsten | Gas chromatography | (C18:4)+(C22:6) flux |
9 | 24-Methylcholest-5-en-3beta-ol, flux | Campesterol flux | µg/m2/day | Fahl, Kirsten | Gas chromatography - Mass spectrometry (GC-MS) | |
10 | 24-Ethylcholest-5-en-3beta-ol, flux | b-Sitosterol flux | µg/m2/day | Fahl, Kirsten | Gas chromatography - Mass spectrometry (GC-MS) | |
11 | 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane, flux | IP25 flux | µg/m2/day | Fahl, Kirsten | Gas chromatography - Mass spectrometry (GC-MS) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
259 data points
Data
1 Event | 2 Depth water [m] (trap depth) | 3 Cup | 4 Date/Time (start) | 5 Date/Time (end) | 6 Duration [days] | 7 Fatty acid flux [µg/m2/day] ((C16:1)+(C20:5) flux, Gas chr...) | 8 Fatty acid flux [µg/m2/day] ((C18:4)+(C22:6) flux, Gas chr...) | 9 Campesterol flux [µg/m2/day] (Gas chromatography - Mass spe...) | 10 b-Sitosterol flux [µg/m2/day] (Gas chromatography - Mass spe...) | 11 IP25 flux [µg/m2/day] (Gas chromatography - Mass spe...) |
---|---|---|---|---|---|---|---|---|---|---|
FEVI10 | 179 | 1 | 2005-08-25 | 2005-09-05 | 12 | 256.72 | 55.91 | 2.01 | 1.45 | 0.00 |
FEVI10 | 179 | 2 | 2005-09-05 | 2005-09-25 | 20 | 780.55 | 114.39 | 3.52 | 2.84 | 0.11 |
FEVI10 | 179 | 3 | 2005-09-25 | 2005-10-15 | 20 | 159.60 | 8.67 | 3.52 | 1.62 | 3.25 |
FEVI10 | 179 | 4 | 2005-10-15 | 2005-10-31 | 16 | 35.47 | 3.12 | 0.19 | 0.22 | 0.09 |
FEVI10 | 179 | 5 | 2005-10-31 | 2005-11-30 | 30 | 8.48 | 0.97 | 0.08 | 0.11 | 0.05 |
FEVI10 | 179 | 6 | 2005-11-30 | 2005-12-31 | 31 | 15.54 | 1.95 | 0.10 | 0.11 | 0.16 |
FEVI10 | 179 | 7 | 2005-12-31 | 2006-02-28 | 59 | 27.36 | 2.48 | 0.14 | 0.14 | 0.19 |
FEVI10 | 179 | 8 | 2006-02-28 | 2006-03-30 | 30 | 126.30 | 5.44 | 0.76 | 0.81 | 0.84 |
FEVI10 | 179 | 9 | 2006-03-30 | 2006-04-14 | 15 | 75.88 | 0.00 | 0.35 | 0.32 | 0.62 |
FEVI10 | 179 | 10 | 2006-04-14 | 2006-04-29 | 15 | 215.22 | 36.23 | 1.13 | 0.83 | 0.32 |
FEVI10 | 179 | 11 | 2006-04-29 | 2006-05-14 | 15 | 750.20 | 131.95 | 2.85 | 2.05 | 11.03 |
FEVI10 | 179 | 12 | 2006-05-14 | 2006-05-29 | 15 | 173.40 | 49.46 | 1.83 | 1.02 | 0.86 |
FEVI10 | 179 | 13 | 2006-05-29 | 2006-06-13 | 15 | 840.32 | 316.56 | 4.85 | 2.33 | 0.34 |
FEVI10 | 179 | 14 | 2006-06-13 | 2006-06-28 | 15 | 4565.89 | 2268.10 | 7.09 | 6.62 | 0.00 |
FEVI10 | 179 | 15 | 2006-06-28 | 2006-07-13 | 15 | 15.04 | 1.71 | 0.15 | 0.11 | 0.04 |
FEVI10 | 179 | 16 | 2006-07-13 | 2006-07-20 | 7 | 153.41 | 14.47 | 0.68 | 0.70 | 0.28 |
FEVI10 | 179 | 17 | 2006-07-20 | 2006-07-27 | 7 | 1355.67 | 257.58 | 13.61 | 11.40 | 1.40 |
FEVI13 | 230 | 1 | 2006-08-26 | 2006-09-01 | 6 | 34.66 | 5.31 | 0.12 | 0.63 | 0.00 |
FEVI13 | 230 | 2 | 2006-09-01 | 2006-09-07 | 6 | 47.54 | 11.13 | 0.10 | 0.46 | 0.00 |
FEVI13 | 230 | 3 | 2006-09-07 | 2006-09-15 | 8 | 91.79 | 23.41 | 0.17 | 0.41 | 0.00 |
FEVI13 | 230 | 4 | 2006-09-15 | 2006-09-22 | 7 | 94.63 | 32.98 | 0.23 | 0.35 | 0.00 |
FEVI13 | 230 | 5 | 2006-09-22 | 2006-09-30 | 8 | 69.15 | 10.04 | 0.20 | 0.40 | 0.00 |
FEVI13 | 230 | 6 | 2006-09-30 | 2006-10-15 | 15 | 95.22 | 13.37 | 0.61 | 0.64 | 1.09 |
FEVI13 | 230 | 7 | 2006-10-15 | 2006-10-31 | 16 | 40.43 | 7.48 | 0.10 | 0.37 | 1.84 |
FEVI13 | 230 | 8 | 2006-10-31 | 2006-11-15 | 14 | 21.41 | 2.73 | 0.07 | 0.19 | 0.00 |
FEVI13 | 230 | 9 | 2006-11-15 | 2006-11-30 | 16 | 109.56 | 47.23 | 0.37 | 0.65 | 0.00 |
FEVI13 | 230 | 10 | 2006-11-30 | 2006-12-31 | 31 | 34.28 | 8.21 | 0.08 | 0.25 | 0.00 |
FEVI13 | 230 | 11 | 2006-12-31 | 2007-01-31 | 31 | 16.98 | 5.18 | 0.13 | 0.34 | 0.22 |
FEVI13 | 230 | 12 | 2007-01-31 | 2007-02-28 | 28 | 33.00 | 6.02 | 0.11 | 0.27 | 0.25 |
FEVI13 | 230 | 13 | 2007-02-28 | 2007-03-15 | 15 | 51.14 | 7.00 | 0.12 | 0.41 | 4.96 |
FEVI13 | 230 | 14 | 2007-03-15 | 2007-03-31 | 16 | 1865.39 | 1019.45 | 1.71 | 3.52 | 0.31 |
FEVI13 | 230 | 15 | 2007-03-31 | 2007-04-15 | 15 | 483.05 | 63.55 | 0.98 | 2.05 | 6.28 |
FEVI13 | 230 | 16 | 2007-04-15 | 2007-04-30 | 15 | 2031.92 | 1021.23 | 2.70 | 6.13 | 0.00 |
FEVI13 | 230 | 17 | 2007-04-30 | 2007-05-10 | 10 | 754.52 | 378.41 | 0.48 | 0.31 | 0.44 |
FEVI13 | 230 | 18 | 2007-05-10 | 2007-05-20 | 10 | 122.66 | 30.04 | 0.73 | 0.80 | 0.21 |
FEVI13 | 230 | 19 | 2007-05-20 | 2007-06-06 | 16 | 58.15 | 10.76 | 0.21 | 0.17 | 0.10 |
FEVI13 | 230 | 20 | 2007-06-06 | 2007-06-20 | 14 | 303.87 | 167.01 | 0.72 | 1.03 | 0.32 |