Kiesel, Joshua; Bienhold, Christina; Link, Heike (2019): Chlorophyll pigments and total organic carbon measured during POLARSTERN cruise PS94 (TransArcII) to the Barents Sea and central Arctic [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.907887, In: Kiesel, Joshua; Bienhold, Christina; Wenzhöfer, Frank; Link, Heike (2019): Benthic biogeochemical parameters measured during Polarstern expedition PS94 (TransArcII) to the Barents Sea and central Arctic [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.907889
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Abstract:
Chlorophyll pigments:
Subsamples of the top first cm of sediment were obtained using cut-off plastic syringes. Samples for chlorophyll pigment analyses were stored dark and frozen at -20°C until further analyses in the home laboratory. Chlorophyll pigments were extracted as described in Boetius et al. (1998, https://doi.org/10.1016/S0967-0637(97)00052-6). Briefly, pigments were extracted in 90% acetone, after addition of glass beads and grinding in a cell mill. Extracts were centrifuged and concentrations of chlorophyll a and phaeopigments (after acidification with HCl) were determined with a Turner Trilogy fluorometer. The sum of chlorophyll a and phaeopigments is expressed as chloroplast pigment equivalents (CPE). The proportion of chlorophyll a from CPE (% chla) is an indicator of the freshness of phytodetritus.
Total organic carbon:
Subsamples of the top first cm of sediment were also obtained using cut-off plastic syringes. Samples were stored frozen at -20°C until further analyses in the home laboratory. The total carbon content of sediment samples was determined by combustion and gas chromatography with a Carlo Erba NA-1500 CNS elemental analyzer. An aliquot of the sample was acidified to remove the fraction of inorganic carbon and to determine the total amount of organic carbon.
Keyword(s):
Supplement to:
Kiesel, Joshua; Bienhold, Christina; Wenzhöfer, Frank; Link, Heike (2020): Variability in Benthic Ecosystem Functioning in Arctic Shelf and Deep-Sea Sediments: Assessments by Benthic Oxygen Uptake Rates and Environmental Drivers. Frontiers in Marine Science, 7, 426, https://doi.org/10.3389/fmars.2020.00426
Project(s):
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03G0833E: Verbundprojekt: WTZ RUS: System Laptev-See: TRANSDRIFT
Seventh Framework Programme (FP7), grant/award no. 294757: Assessment of bacterial life and matter cycling in deep-sea surface sediments
Coverage:
Median Latitude: 81.896614 * Median Longitude: 90.178723 * South-bound Latitude: 72.734000 * West-bound Longitude: 22.826000 * North-bound Latitude: 89.916170 * East-bound Longitude: -121.750830
Date/Time Start: 2015-08-18T20:46:00 * Date/Time End: 2015-10-08T10:20:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.005 m
Event(s):
PS94/001-2 * Latitude: 74.998500 * Longitude: 30.004000 * Date/Time: 2015-08-18T20:46:00 * Elevation: -372.0 m * Location: Barents Sea * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: MultiCorer (MUC)
PS94/002-2 * Latitude: 76.676330 * Longitude: 30.003830 * Date/Time: 2015-08-19T05:56:00 * Elevation: -265.0 m * Location: Barents Sea * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: MultiCorer (MUC)
PS94/021-2 * Latitude: 80.996500 * Longitude: 28.969500 * Date/Time: 2015-08-21T10:22:00 * Elevation: -389.5 m * Location: Arctic Ocean * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: MultiCorer (MUC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kiesel, Joshua | |||
| 2 | Date/Time of event | Date/Time | Kiesel, Joshua | |||
| 3 | Latitude of event | Latitude | Kiesel, Joshua | |||
| 4 | Longitude of event | Longitude | Kiesel, Joshua | |||
| 5 | Elevation of event | Elevation | m | Kiesel, Joshua | ||
| 6 | DEPTH, sediment/rock | Depth sed | m | Kiesel, Joshua | Geocode | |
| 7 | Depth, top/min | Depth top | m | Kiesel, Joshua | ||
| 8 | Depth, bottom/max | Depth bot | m | Kiesel, Joshua | ||
| 9 | Carbon, organic, total | TOC | mg/kg | Kiesel, Joshua | Gas chromatography with Carlo Erba NA-1500 CNS elemental analyzer | |
| 10 | Chlorophyll a, per unit sediment volume | Chl a/sed | µg/ml | Kiesel, Joshua | Laboratory fluorometer, Turner, Trilogy | |
| 11 | Phaeopigments, per unit sediment volume | Phae/sed | µg/ml | Kiesel, Joshua | Laboratory fluorometer, Turner, Trilogy | |
| 12 | Chlorophyll pigment equivalents | CPE | µg/cm3 | Kiesel, Joshua | Laboratory fluorometer, Turner, Trilogy | |
| 13 | Chlorophyll a/chloroplastic pigment equivalents ratio | Chl a/CPE | % | Kiesel, Joshua | Laboratory fluorometer, Turner, Trilogy | |
| 14 | Comment | Comment | Kiesel, Joshua |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
252 data points