Lange, Fabian; Ahmerkamp, Soeren; Akeerath Mundanatt, Aman; Lavik, Gaute; Ferdelman, Timothy G; Kuypers, Marcel MM (2026): Benthic biogeochemistry data from RV HEINCKE cruise HE582 to the German Bight, North Sea in late summer 2021 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.992026
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Published: 2026-02-25 • DOI registered: 2026-02-25
Abstract:
This dataset contains data from the RV Heincke cruise HE582 to the German Bight of the North Sea in late summer 2021. The aim of the research was to investigate the source of sedimentary glycan concentrations in subtidal sandy sediments. Glycans represent a substantial fraction of extracellular polymeric substances and may affect flow dynamics in marine sandy sediments. The origin and concentration of glycans in sands remain understudied until today. To gain insights into oxygen supply and glycan concentrations in sandy sediment, we conducted in situ measurements and sampled sediment via a van Veen grab for ex situ investigations. Oxygen penetration depths were determined by a benthic lander, which was deployed for ca. 24h at each station. Chlorophyll a concentrations as an indicator for potentially photosynthetically active sedimentary biomass were derived via extraction with 90% acetone against Sigma Aldrich standards. Glycan concentrations served as indicator for extracellular polymeric substances and were quantified against a glucose standard curve via a phenol sulfuric acid assay after prior sequential glycan extraction (MilliQ, EDTA, NaOH). The final glycan concentrations are referred to per volume of porespace, and therefore given in mmol/l porewater. To investigate if benthic primary producers could be responsible for the extracted sedimentary glycan concentrations, we conducted stable isotope incubations.
Supplement to:
Lange, Fabian; Ahmerkamp, Soeren; Akeerath Mundanatt, Aman; Jalaluddin, Farooq Moin; Schulz, Gesa; Voß, Daniela; Zielinski, Oliver; Hanz, Ulrike; Lavik, Gaute; Marchant, Hannah K; Hehemann, Jan-Hendrik; Ferdelman, Timothy G; Holtappels, Moritz; Kuypers, Marcel MM (accepted): Algal glycans promote microbial turnover of organic matter through stabilization of subtidal permeable sandy sediments. Limnology and Oceanography
Related to:
Holtappels, Moritz; Ahmerkamp, Soeren; Hanz, Ulrike; Lange, Fabian; Minutolo, Fabrizio; Sander, Lasse; Schulz, Gesa; Soares, Clayton; Zhu, Zhe (2021): The fate of organic matter in sandy sediments, Cruise No. HE582, 23.8.2021 - 5.9.2021, Bremerhaven (Germany) - Bremerhaven (Germany). HEINCKE-Berichte, Gutachterpanel Forschungsschiffe, HE582, 31 pp, https://doi.org/10.48433/cr_he582
Funding:
German Research Foundation (DFG), grant/award no. 390741603: EXC 2077: The Ocean Floor – Earth's Uncharted Interface
Coverage:
Median Latitude: 54.920879 * Median Longitude: 6.660527 * South-bound Latitude: 54.258810 * West-bound Longitude: 3.674366 * North-bound Latitude: 55.645227 * East-bound Longitude: 8.337300
Date/Time Start: 2021-08-23T14:26:14 * Date/Time End: 2021-09-02T04:04:23
Minimum Elevation: -36.4 m * Maximum Elevation: -9.6 m
Event(s):
HE582_1-1 * Latitude: 54.258810 * Longitude: 8.337300 * Date/Time: 2021-08-23T14:26:14 * Elevation: -9.6 m * Location: North Sea * Campaign: HE582 * Basis: Heincke * Method/Device: Grab (GRAB)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Lange, Fabian | |||
| 2 | Latitude of event | Latitude | Lange, Fabian | |||
| 3 | Longitude of event | Longitude | Lange, Fabian | |||
| 4 | Date/Time of event | Date/Time | Lange, Fabian | |||
| 5 | Elevation of event | Elevation | m | Lange, Fabian | ||
| 6 | Station label | Station | Lange, Fabian | |||
| 7 | Oxygen penetration depth | OPD depth | mm | Lange, Fabian | Oxygen optode (OPTODE) | |
| 8 | Chlorophyll a, per unit sediment mass | Chl a/sed | µg/g | Lange, Fabian | UV-vis spectrometer, Thermo Scientific, Genesys 10S | The samples were measured against Sigma-Aldrich standards |
| 9 | Glycan concentration, total | Glycan con tot | mmol/l | Lange, Fabian | Sequential glycan extraction and phenol sulfuric acid assay | The glycan concentrations were quantified against a standard curve with glucose and are therefore given as carbon glucose equivalents per liter of porewater |
| 10 | Glycan concentration, water soluble | Glycan con water soluble | mmol/l | Lange, Fabian | Sequential glycan extraction and phenol sulfuric acid assay | The glycan concentrations were quantified against a standard curve with glucose and are therefore given as carbon glucose equivalents per liter of porewater |
| 11 | Glycan concentration, anionic | Glycan con anionic | mmol/l | Lange, Fabian | Sequential glycan extraction and phenol sulfuric acid assay | The glycan concentrations were quantified against a standard curve with glucose and are therefore given as carbon glucose equivalents per liter of porewater |
| 12 | Glycan concentration, water insoluble | Glycan con water insoluble | mmol/l | Lange, Fabian | Sequential glycan extraction and phenol sulfuric acid assay | The glycan concentrations were quantified against a standard curve with glucose and are therefore given as carbon glucose equivalents per liter of porewater |
| 13 | Primary production of carbon | PP C | mmol/m2/day | Lange, Fabian | Stable isotope analysis |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
53 data points