Hageman, Renee; Thorseth, Ingunn H; Møller, Tor Einar; Brendryen, Jo; Leth Jørgensen, Steffen (2026): Arctic deep-sea sediment pore-fluid concentrations of oxygen, ammonium, nitrate, and divalent manganese and iron [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.990258
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Published: 2026-02-25 • DOI registered: 2026-03-27
Abstract:
This dataset consists of depth profiles of pore-fluid chemistry from multiple sites along the Arctic mid-ocean ridge system. The primary goal of collecting these data was to compare them with microbial community profiles to investigate the coupling between microbial taxa and redox-sensitive chemical constituents. Sampling was conducted during several research cruises across different years and seasons, using consistent onboard methodologies. The cores were split in half, where on one side the oxygen data was measured using a micro-fiber optic oxygen transmitter (Microx TX3, PreSense). Concomitantly on the other half, pore-fluids were extracted using Rhizon CSS soil moisture sampler (Rhizosphere research products) at intervals of 5–30 cm. The upper 100 cm were sampled at finer intervals than deeper sections due to reduced pore-fluid availability caused by sediment compression. The pore-fluids were analyzed for cations and nutrients. The cation samples were acidified up to 3 vol% ultra pure HNO3 and stored at 4 degrees Celsius until analyses on the Thermo Scientific iCAP 7600 inductively coupled plasma optical emission spectrometer. The nutrient samples were frozen at -20 degrees Celsius until analyses on the Seal Analytical Quaatro at Earth Sciences department in the University of Bergen. The microbial community data (16S rRNA gene) is available on NCBI sequence database under project numbers: PRJNA784957, PRJEB102573, PRJNA529480, PRJNA789780. From one core the age was determined through 14C dating of planktonic foraminifera Neogloboquadrina pachyderma. The 14C was analysed at the Radiocarbon Dating Laboratory (Lunds Universitet, Sweden).
Keyword(s):
Related to:
Homo sapiens (ID 102573) - BioProject - NCBI [webpage]. https://www.ncbi.nlm.nih.gov/bioproject/102573
ID 784957 - BioProject - NCBI [webpage]. https://www.ncbi.nlm.nih.gov/bioproject/784957
ID 789780 - BioProject - NCBI [webpage]. https://www.ncbi.nlm.nih.gov/bioproject/789780
marine sediment metagenome (ID 529480) - BioProject - NCBI [webpage]. https://www.ncbi.nlm.nih.gov/bioproject/529480
Brendryen, Jo; Møller, Tor Einar; Leth Jørgensen, Steffen (2026): 14C dating of Arctic deep-sea sediment [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.990499
Hageman, Renee; Le Moine-Bauer, Sven; Thorseth, Ingunn H; Brendryen, Jo; Møller, Tor Einar; Böröcz, Réka; Babel, Hannah R; Hannisdal, Bjarte; Leth Jørgensen, Steffen (in review): Widespread deep-sea microorganisms in subseafloor geochemical cycling.
Funding:
Coverage:
Median Latitude: 73.678166 * Median Longitude: 3.421727 * South-bound Latitude: 70.829267 * West-bound Longitude: -12.036700 * North-bound Latitude: 79.611667 * East-bound Longitude: 8.508775
Date/Time Start: 2013-07-10T03:00:00 * Date/Time End: 2022-05-26T17:40:00
Minimum DEPTH, sediment/rock: 0.0000 m * Maximum DEPTH, sediment/rock: 20.0500 m
Event(s):
GS13_CC02 * Latitude: 72.811117 * Longitude: 3.705633 * Date/Time: 2013-07-10T03:00:00 * Elevation: -2755.0 m * Campaign: GS13-108 * Basis: G. O. Sars (2003) * Method/Device: Calypso Corer (CALYPSO)
GS14_GC02 * Latitude: 70.915917 * Longitude: -12.036700 * Date/Time: 2014-07-22T07:00:00 * Elevation: -1036.0 m * Campaign: GS14-CGB14 * Basis: G. O. Sars (2003) * Method/Device: Gravity corer (GC)
GS14_GC04 * Latitude: 71.284617 * Longitude: -6.561417 * Date/Time: 2014-07-24T08:06:00 * Elevation: -1050.0 m * Campaign: GS14-CGB14 * Basis: G. O. Sars (2003) * Method/Device: Gravity corer (GC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Hageman, Renee | |||
| 2 | Cruise/expedition | Expedition | Hageman, Renee | |||
| 3 | Core | Core | Hageman, Renee | Core ID | ||
| 4 | Sample code/label | Sample label | Hageman, Renee | |||
| 5 | DEPTH, sediment/rock | Depth sed | m | Hageman, Renee | Geocode | |
| 6 | Oxygen | O2 | µmol/l | Hageman, Renee | Fiber-optic oxygen microsensor PSt1 with MicroTX3 transmitter (Presens) | |
| 7 | Nitrate | [NO3]- | µmol/l | Hageman, Renee | Segmented continuous flow analyzer, SEAL Analytical, QuAAtro | |
| 8 | Nitrogen oxide | NOx | µmol/l | Hageman, Renee | Segmented continuous flow analyzer, SEAL Analytical, QuAAtro | |
| 9 | Ammonium | [NH4]+ | mmol/l | Hageman, Renee | Segmented continuous flow analyzer, SEAL Analytical, QuAAtro | |
| 10 | Manganese 2+ | Mn2+ | µmol/l | Hageman, Renee | Inductively coupled plasma–optical emission spectrometer (ICP-OES), Thermo Fisher Scientific Inc., iCAP 7600 Duo | |
| 11 | Iron 2+ | Fe2+ | µmol/l | Hageman, Renee | Inductively coupled plasma–optical emission spectrometer (ICP-OES), Thermo Fisher Scientific Inc., iCAP 7600 Duo | |
| 12 | Comment | Comment | Hageman, Renee |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
5138 data points
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