Citation:

PANGAEA.997072 (dataset in review)

Name: Kiel Bight microprofiling data from sediment core incubation experiment in 2025
License: https://creativecommons.org/licenses/by/4.0/
Keywords: cable bacteria; Candidatus Electrothrix; carbon dioxide removal; CDR; enhanced weathering; Ocean Alkalinity Enhancement (OAE); seasonal hypoxia; Transcriptomics

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Abstract:

This dataset consists of high-resolution electrochemical microprofiles of sulfide, oxygen, pH and redox potential from sediment core incubation experiment with one calcite amended and one untreated reference core. Measurements used 50 µm tip microsensors (SULF-50, OX-50, pH-50, RD-50; Unisense A/S) with a motorized micromanipulator (250 µm steps, 5.5 cm profiles). Duplicate profiles were measured and this dataset resolves vertical gradient across the sediment-water interface. These datasets provide insights into how carbonate addition alters redox stratification and pH-dynamics in benthic systems following perturbation of temporal equilibrium, supporting interpretation of associated microbial community and activity data.

Keyword(s):

cable bacteria; Candidatus Electrothrix; carbon dioxide removal; CDR; enhanced weathering; Ocean Alkalinity Enhancement (OAE); seasonal hypoxia; Transcriptomics

Project(s):

DAM CDRmare - RETAKE: CO2 removal by alkalinity enhancement: potential, benefits and risks (RETAKE)

Funding:

Federal Ministry of Research, Technology and Space (BMFTR), grant/award no. 03F0965A : DAM CDRmare - RETAKE-2, GEOMAR

Coverage:

Latitude: 54.572167 * Longitude: 10.177833

Date/Time Start: 2025-02-18T00:00:00 * Date/Time End: 2025-03-19T00:00:00

Event(s):

L25_02b_core * Latitude: 54.572167 * Longitude: 10.177833 * Date/Time: 2025-02-18T00:00:00 * Location: Eckernförder Bucht * Campaign: * Basis: * Method/Device: MiniCorer (MIC) * Comment: sampling location of the sediments for the experiment

L25_02b_Experiment * Date/Time Start: 2025-02-24T00:00:00 * Date/Time End: 2025-03-19T00:00:00 * Method/Device: Laboratory experiment

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type of study	Study type		Thiele, Matthias
2	Treatment	Treat		Thiele, Matthias
3	Sample code/label	Sample label		Thiele, Matthias
4	Sampling date/time, experiment	Date/time sampling exp		Thiele, Matthias		date
5	DEPTH, water, experiment	Depth water exp	m	Thiele, Matthias		Geocode – above sediment?
6	DEPTH, sediment, experiment	Depth sed exp	m	Thiele, Matthias		Geocode
7	Replicate	Repl		Thiele, Matthias
8	Oxygen	O2	µmol/l	Thiele, Matthias	Oxygen microsensor, Unisense, OX-50
9	Hydrogen sulfide	H2S	µmol/l	Thiele, Matthias	Hydrogen sulfide microsensor, Unisense, SULF-50
10	pH	pH		Thiele, Matthias	pH microelectrode, Unisense, pH-50
11	Oxidation reduction (RedOx) potential	Eh	mV	Thiele, Matthias	Redox microelectrode, Unisense, RD-50

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

15810 data points

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