Description: This dataset presents porewater and solid-phase geochemistry as well as microbial cell counts and microbial induced sulfate reduction rates from calcite-amended and unamended sediment cores collected in Kiel Bight in February 2025 during cruise L25-02b. Sediment cores were incubated at 8° C under controlled oxygen cycles in the laboratory of the home institute. Porewater was extracted by centrifugation and anoxic filtration. Solid phase analyses included COrg, CaCO3, total sulfur (%) and data from sequential Fe extraction (Cline Assay), calcium ions, Fe total, Mn total (ICP-OES), sulfate (IC), alkalinity, hydrogen sulfide. Sulfate reduction rates were quantified using 35S-radiotracer incubation and cold chromium distillation (Kallmeyer et al., 2004, Roy et al., 2014). Furthermore, cell counts were determined. The dataset supports evaluation of enhanced benthic weathering effects on sulfur cycling, iron speciation and microbial activity in dynamic and seasonally hypoxic coastal sediments.
Global identifier:
Doi(
"10.1594/PANGAEA.997075",
)
DataMeasurements(
DataMeasurements {
domain: Unspecified,
station: None,
measured_variables: [
"Alkalinity, total",
"Ammonium",
"Calcium",
"Calcium carbonate",
"Carbon, organic",
"Carbon/Nitrogen ratio",
"DEPTH, sediment, experiment",
"Depth comment",
"Depth, sediment, experiment, bottom/maximum",
"Depth, sediment, experiment, top/minimum",
"Hydrogen sulfide",
"Iron",
"Iron II, ferrous iron, crystalline, per unit sediment dry mass",
"Iron II, ferrous iron, per unit sediment dry mass",
"Iron II, ferrous iron, poorly crystalline, per unit sediment dry mass",
"Iron III, ferric iron, crystalline, per unit sediment dry mass",
"Iron III, ferric iron, poorly crystalline, per unit sediment dry mass",
"Manganese",
"Microbial abundance, cells",
"Nitrate",
"Nitrite",
"Sample code/label",
"Sampling date/time, experiment",
"Sulfate",
"Sulfate reduction rate",
"Sulfur, total",
"Time in hours",
"Treatment",
"Type of study",
],
methods: [
"Elemental analyzer, EuroVector, EuroEA 3000",
"Inductively coupled plasma optical emission spectrometry (ICP-OES)",
"Ion chromatograph, Metrohm, Eco IC",
"QuAAtro AutoAnalyzer",
"Spectrophotometer, Hitachi, U-2800-A",
"Titration, Metrohm, 876 Dosimat Plus",
],
},
)
Tags: Ammonium ? Eisensulfat ? Calciumcarbonat ? Nitrit ? Nitrat ? Eisen ? Gesamtkohlenstoff ? Studie ? Sediment ? Biologische Aktivität ? Sedimentdynamik ? Carbon Dioxide Removal ? Daten ? Candidatus Electrothrix ? Ocean Alkalinity Enhancement (OAE) ? Transcriptomics ? cable bacteria ? enhanced weathering ? seasonal hypoxia ?
Region: Eckernförder Bucht
Bounding boxes: 10.177833° .. 10.177833° x 54.572167° .. 54.572167° 9.95372° .. 9.95372° x 54.48322° .. 54.48322°
License: Creative Commons Namensnennung 4.0 (Data access requires registration)
Language: Englisch/English
Modified: 2026-09-02
Last harvest: 04.09.2026 02:34
Time ranges: 2025-02-18 - 2025-03-19
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