Stief, Peter (2023): Cumulative total carbon loss through aerobic respiration and leakage of dissolved organic carbon (DOC) from sinking diatom aggregates incubated in rotating pressure and control tanks [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.960506, In: Stief, Peter; Schauberger, Clemens; Becker, Kevin W; Elvert, Marcus; Balmonte, John Paul; Franco-Cisterna, Belén; Middelboe, Mathias; Glud, Ronnie N (2023): Effects of increasing hydrostatic pressure on sinking diatom aggregates [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.960357
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Published: 2023-08-11 • DOI registered: 2023-09-09
Abstract:
The effect of increasing hydrostatic pressure on the microbial degradation, the organic matter composition, and the microbiome of 'marine snow' particles was studied in laboratory incubation experiments. Model aggregates were produced from the diatom Skeletonema marinoi and the natural microbial community of surface seawater collected in the Kattegat. The aggregates were incubated individually in rotating pressure and control tanks to keep them suspended during 20-day incubations in the dark and at 3°C. In the pressure tanks, hydrostatic pressure was increased at increments of 5 MPa per day to finally reach 100 MPa. This pressure scheme simulates the descent of diatom aggregates from the surface ocean down into a 10-km deep hadal trench. In the control tanks, pressure was always left at atmospheric level.
The cumulative total carbon loss from sinking diatom aggregates was calculated as the sum of carbon loss through aerobic respiration and carbon loss through DOC leakage expressed relative to the initial carbon contents of the respective diatom aggregate.
Keyword(s):
Funding:
Danish National Research Foundation (DG), grant/award no. DNRF145: Danish Center for Hadal Research, HADAL
Coverage:
Latitude: 55.368167 * Longitude: 10.426563
Date/Time Start: 2021-07-27T13:48:26 * Date/Time End: 2022-11-02T08:27:14
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Experiment | Exp | Stief, Peter | |||
| 2 | Type of study | Study type | Stief, Peter | |||
| 3 | Date/time start, experiment | Date/time start exp | Stief, Peter | |||
| 4 | Date/time end, experiment | Date/time end exp | Stief, Peter | |||
| 5 | Experimental treatment | Exp treat | Stief, Peter | |||
| 6 | Replicate | Repl | Stief, Peter | |||
| 7 | Treatment: time after | T:time after | h | Stief, Peter | Time after starting the experimental incubation | |
| 8 | Treatment: pressure | T:pressure | MPa | Stief, Peter | Digital manometer, Keller AG, LEO5 | |
| 9 | Carbon loss, total | C loss tot | % | Stief, Peter | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Cumulative total carbon loss through respiration plus dissolved organic carbon leakage; After filtration through 0.3-µm glass fiber filters. |
| 10 | Confidence interval | CI | Stief, Peter | Carbon loss, total | ||
| 11 | Laboratory | Lab | Stief, Peter |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
132 data points
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Datasets with similar metadata
- Stief, P (in review): Pressure-induced leakage of dissolved organic matter (DOM) from diatom-bacteria aggregates. https://doi.pangaea.de/10.1594/PANGAEA.974878
- Stief, P (in review): Degradation of diatom-derived dissolved organic matter (DOM) in surface seawater. https://doi.pangaea.de/10.1594/PANGAEA.974879
- Franco Cisterna, B; Stief, P; Glud, RN (2024): Effect of temperature on the cumulative carbon loss from decaying copepod carcasses. https://doi.org/10.1594/PANGAEA.969430