Pieck, Daniela; Schilken, Esther; Slivensky-Graf, Cassidy; Weyel, Niklas; Dietrich, Kathrin; Lõhmus, Kertu; Hillebrand, Helmut; Kleyer, Michael; Zielinski, Oliver; Wollschläger, Jochen; Badewien, Thomas Henry (2025): Pore-water salinity measurements in surface sediments within DynaCom experimental islands and saltmarsh enclosed plots at different elevation levels, Spiekeroog, Germany, 2023-01 to 2023-08 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.986780
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Published: 2025-10-23 • DOI registered: 2025-11-21
Abstract:
Data presented here were collected between January 2023 to August 2023 within the research unit DynaCom (Spatial community ecology in highly dynamic landscapes: From island biogeography to metaecosystems) of the Universities of Oldenburg, Göttingen, and Münster, the iDiv Leipzig and the Nationalpark Niedersächsisches Wattenmeer. Experimental islands and saltmarsh enclosed plots were created in the back barrier tidal flat and in the saltmarsh zone of the island of Spiekeroog. Sediment samples for the determination of pore-water salinity were taken bi-/monthly in surface sediments (0-3 cm depth) of the experimental plots. Samples were taken between 3 hours before and 3 hours after low tide. Samples were stored dark and cool (8°C) until measurement. Samples were measured in the laboratory within two months after sampling according to DIN ISO 11265:1997-06. In the laboratory, sediment samples for the determination of pore-water salinity were weighed in pre-weighed Falcon™ 50 mL conical centrifuge tubes (10 g sediment on average, depending on sand content). After one month of air-drying samples were re-weighed to determine dry weight and therefore the loss in weight. Ultrapure water was added to the tubes and were homogenized using a pestle. Salinity was measured directly in the tubes with a HQ40D Digital two channel multi meter and a pre-calibrated Intellical CDC401 field 4-poles graphite conductivity cell (Hach Lange GmbH, Germany). Post-processing of measured values were done using MATLAB (R2024b). Quality control was performed by (a) visually checks, and hence (b) the classification into quality control flags using quality check algorithms.
Keyword(s):
Related to:
Pieck, Daniela; Schilken, Esther; Slivensky-Graf, Cassidy; Weyel, Niklas; Hansel, Angelika; Lõhmus, Kertu; Hillebrand, Helmut; Kleyer, Michael; Zielinski, Oliver (2024): Pore-water salinity measurements in surface sediments within DynaCom experimental islands and saltmarsh enclosed plots at different elevation levels, Spiekeroog, Germany, 2022-01 to 2022-11 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.965407
References:
Balke, Thorsten; Lõhmus, Kertu; Hillebrand, Helmut; Zielinski, Oliver; Haynert, Kristin; Meier, Daniela; Hodapp, Dorothee; Minden, Vanessa; Kleyer, Michael (2017): Experimental salt marsh islands: A model system for novel metacommunity experiments. Estuarine, Coastal and Shelf Science, 198, 288-298, https://doi.org/10.1016/j.ecss.2017.09.021
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 379417748: FOR 2716: Spatial community ecology in highly dynamic landscapes: from island biogeography to metaecosystems
Coverage:
Median Latitude: 53.760667 * Median Longitude: 7.722268 * South-bound Latitude: 53.756790 * West-bound Longitude: 7.715610 * North-bound Latitude: 53.762660 * East-bound Longitude: 7.726740
Date/Time Start: 2023-01-11T00:00:00 * Date/Time End: 2023-08-14T00:00:00
Minimum Elevation: 0.8 m * Maximum Elevation: 2.0 m
Event(s):
BEFmate_C1low * Latitude: 53.762117 * Longitude: 7.723444 * Elevation: 1.7 m * Location: off Spiekeroog, German Bight, North Sea * Method/Device: Multiple investigations (MULT) * Comment: Lower saltmarsh zone, control plot 1
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Badewien, Thomas Henry | |||
| 2 | DATE/TIME | Date/Time | Badewien, Thomas Henry | Geocode – Date | ||
| 3 | Plot | Plot | Badewien, Thomas Henry | ID | ||
| 4 | Sampling date | Sampling date | Badewien, Thomas Henry | Month Year | ||
| 5 | Sampling | Sampling | Badewien, Thomas Henry | ID | ||
| 6 | LATITUDE | Latitude | Badewien, Thomas Henry | Geocode | ||
| 7 | LONGITUDE | Longitude | Badewien, Thomas Henry | Geocode | ||
| 8 | ELEVATION | Elevation | m a.s.l. | Badewien, Thomas Henry | Geocode | |
| 9 | DEPTH, sediment/rock | Depth sed | m | Badewien, Thomas Henry | Geocode – mean | |
| 10 | Depth, sediment/rock, top/minimum | Depth sed top | m | Badewien, Thomas Henry | ||
| 11 | Depth, sediment/rock, bottom/maximum | Depth sed bot | m | Badewien, Thomas Henry | ||
| 12 | Salinity, porewater | Sal pw | Badewien, Thomas Henry | Portable 2-channel multimeter, Hach, HQ40D | per mil | |
| 13 | Quality flag, salinity | QF sal | Badewien, Thomas Henry | QC = 4 (bad data) - do not use this data-point; QC = 3 (questionable data) - likely bad data-point; QC = 2 (probably good data) - likely good data-point; QC = 1 (good data) - certainly good data-point; QC = 0 (unknown data) - no data point available |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
4364 data points
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