Citation:

PANGAEA.989251

Name: Continuous water level observations at station BEFmate_I3upp, 2020-01 to 2023-04
Published: 2026-01-19
License: https://creativecommons.org/licenses/by/4.0/
Keywords: BEFmate; biodiversity - ecosystem functioning; DynaCom; experimental islands; Field experiment; groundwater level; Metacommunity; salt marsh; Spiekeroog; water level

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Published: 2026-01-19 • DOI registered: 2026-02-17

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Abstract:

Data presented here were collected between 2020-01 and 2023-04 at station BEFmate_I3upp within the research unit DynaCom (Spatial community ecology in highly dynamic landscapes: From island biogeography to metaecosystems, https://uol.de/dynacom/ ) involving the Universities of Oldenburg, Göttingen, and Münster, the iDiv Leipzig and the Nationalpark Niedersächsisches Wattenmeer. Experimental islands and saltmarsh enclosed plots were established in the back-barrier tidal flat and in the saltmarsh zone of the island of Spiekeroog (Germany). Groundwater levels at different elevation zones were measured using pressure loggers deployed in dip wells within the experimental islands as well as in the saltmarsh enclosed plots. Measurements were obtained using Hobo U20L Water Level Loggers (Onset Computer Corporation, Bourne, MA/USA). All devices were pre-calibrated by the manufacturer. Logged data were retrieved in the field using a Hobo Underwater Shuttle (U-DTW-1) and were read out with the HOBOware Pro (V3.7.28) software, Subsequent data processing was done using MATLAB (R2024b). Atmospheric pressure correction for water-level calculations was applied using data from a nearby weather station. Post-processing and quality control included (a) the removal of data covering maintenance activities, (b) an outlier detection, and (c) visual checks. Outliers in water level and temperature time series were detected using a moving-median filter and a 3-sigma criterion, with additional cross-checking against a reference sensor. Identified outliers were removed, and height-corrected water level series were produced to ensure consistency across sensors and years.

Keyword(s):

BEFmate; biodiversity - ecosystem functioning; DynaCom; experimental islands; Field experiment; groundwater level; Metacommunity; salt marsh; Spiekeroog; water level

Related to:

Meier, Daniela; Thölen, Claudia; Hillebrand, Helmut; Kleyer, Michael; Lõhmus, Kertu; Zielinski, Oliver (2020): Continuous water level observations within DynaCom experimental islands and saltmarsh enclosed plots at different elevation levels (2019), Spiekeroog, Germany, 2019-01 to 2019-12 [dataset publication series]. Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky University Oldenburg, Germany, PANGAEA, https://doi.org/10.1594/PANGAEA.920175

References:

Zielinski, Oliver; Meier, Daniela; Lõhmus, Kertu; Balke, Thorsten; Kleyer, Michael; Hillebrand, Helmut (2018): Environmental conditions of a salt-marsh biodiversity experiment on the island of Spiekeroog (Germany). Earth System Science Data, 10(4), 1843-1858, https://doi.org/10.5194/essd-10-1843-2018

Project(s):

FOR 2716: Spatial community ecology in highly dynamic landscapes: from island biogeography to metaecosystems (DynaCom)

Funding:

German Research Foundation (DFG), grant/award no. 379417748 : FOR 2716: Spatial community ecology in highly dynamic landscapes: from island biogeography to metaecosystems

Coverage:

Latitude: 53.757314 * Longitude: 7.724767

Date/Time Start: 2020-01-01T00:00:00 * Date/Time End: 2023-04-13T08:00:00

Minimum Elevation: 2.0 m * Maximum Elevation: 2.0 m

Event(s):

BEFmate_I3upp * Latitude: 53.757314 * Longitude: 7.724767 * Elevation: 2.0 m * Location: off Spiekeroog, German Bight, North Sea * Method/Device: Multiple investigations (MULT) * Comment: Upper saltmarsh zone, island 3

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type of study	Study type		Badewien, Thomas Henry		UTC
2	DATE/TIME	Date/Time		Badewien, Thomas Henry	HOBO Water Level Logger	Geocode
3	Groundwater level	GW level	m	Badewien, Thomas Henry	HOBO Water Level Logger
4	Temperature, water	Temp	°C	Badewien, Thomas Henry	HOBO Water Level Logger

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)

Size:

515338 data points

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