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Pore-water pH, H2S, Cl-, SO42-, SiO2, NO2-, PO43-, NH4+, NO3-, major and trace element data from MUC cores taken during RV HEINCKE cruises HE575 and HE595 in the Helgoland Mud Area, German Bight

This dataset includes downcore measurements of pH values, H2S, Cl-, SO42-, SiO2, NO2-, PO43-, NH4+, NO3-, As, Ba, Ca, Cu, Fe, K, Li, Mg, Mn, Mo, P, Si and Sr concentrations for sediment cores retrieved using multi-corer sampling during RV Heincke expeditions HE575 and HE595 in 2021 and 2022, respectively. The samples were collected in the framework of the Project APOC (Anthropogenic impacts on particulate organic carbon cycling in the North Sea). All measurements were performed in the laboratories of the Alfred Wegener Institute (AWI) in Bremerhaven, Germany, except pH values, which were determined onboard the research vessel.

LIB Elektrolytrecycling aus Lithiumionen-Batterien zur Schließung von Wertstoffströmen, ElRec - LIB Elektrolytrecycling aus Lithiumionen-Batterien zur Schließung von Wertstoffströmen

Grundwassermessstelle DEGM_DENW_040071005: 0 07 100 - HS 115

Stammdaten und Analysedaten zu den Grundwassermessstellen im EUA-Messnetz: Messtelle DEGM_DENW_040071005 (0 07 100 - HS 115)

Submarine groundwater discharge in front of a coastal peatland: Seepage rates and hydrochemistry

Coastal peatlands are important carbon, nutrient, and trace metal stores, which might be mobilized and released to the adjacent sea upon rewetting. The objectives of this study were to quantify submarine groundwater discharge (SGD) in front of a rewetted coastal peatland at the southern Baltic Sea coast, to estimate associated fluxes of solutes, and to characterize the discharged water using stable oxygen, hydrogen, and carbon isotope composition. We directly measured SGD rates and collected the discharging water using seepage meters in summer and autumn 2021. SGD, seawater and groundwater were analyzed for major ion, nutrient, DOC/DIC and trace metal concentrations as well as the composition of water and carbon isotopes. Racasa et al. (2026) is based on this dataset.

Elbe Element Explorer 2018-2023: A time series of dissolved metals in the Elbe river

The river Elbe flows through Geesthacht right before the tidal part of the Elbe begins. In order to monitor and investigate the metal load and transport from the upstream river with a study focus on extreme events, water samples were taken weekly from the Geesthacht riverbank a couple of kilometers upstream of the weir starting in April 2018 and going until April 2023. During extreme events, i.e. floods or droughts, the sampling interval was increased to (bi-)daily sampling. The water samples were taken in pre-cleaned LDPE bottles, filtered over <0.45 µm polycarbonate filters into pre-cleaned LDPE bottles/tubes and acidified with nitric acid. The filtrates were then measured for their (trace) metal concentrations with ICP-MS/MS coupled online to a seaFAST preconcentration and matrix removal system. The physiochemical parameters pH value, dissolved oxygen, temperature and conductivity were measured for each sample using a corresponding multimeter probe.

Pore water data of sediment incubation experiments under anoxic conditions

Enhanced mineral dissolution in the benthic environment is currently discussed as a potential technique for ocean alkalinity enhancement (OAE) to reduce atmospheric carbon dioxide (CO2) levels. This study explores how biogeochemical processes affect the dissolution of alkaline minerals in surface sediments during laboratory incubation experiments. These involved introducing dunite and calcite to organic-rich sediments from the Baltic Sea under controlled conditions in an anoxic to hypoxic environment. The sediment cores were incubated with Baltic Sea bottom water. Eight sediment cores were positioned vertically in a rack. Since the sediment surface was slightly oxidized by the bottom water (∼125 μmol l−1 upon recovery), the cores were left plugged on the top for 13 days to settle after recovery until the sediment surface was anoxic. To achieve chemical conditions that are expected in the natural system, 500l of retrieved sea water were degassed via bubbling with pure dinitrogen gas in batches of 100 l. Afterwards, between 50 and 60 l were transferred into an evacuated gas tight bag. After the transfer, pH and total alkalinity (TA) were measured to determine the dissolved inorganic carbon (DIC) of the water. Afterwards the DIC was increased via adding pure CO2 until a CO2 partial pressure (pCO2 ) of ∼2,300–∼3,300 μatm was established mimicking conditions prevailing in Boknis Eck during summer. Stirring heads were installed on the cores. To prevent the development of oxic conditions, it was ensured that as little gas phase as possible was left in the cores. Elimination of pelagic autotrophs, heterotrophs, and suspended particles was achieved by flushing the cores with modified bottom water for 2 days with a flow rate of 1.5 mml min−1. Afterwards, a continuous throughflow of 700 μl min−1 from the reservoir of modified bottom water was applied, leading to a residence time of ∼2.1 days inside the cores. For the experimental incubations, six cores received additions of alkaline materials, three with calcite (Cal1 - Cal3) and three cores with dunite (Dun1 - Dun3), leading to three replicates per treatment. Two control cores remained untreated (C1, C2). The amount of added substrate was based on the rain rate of particulate organic carbon observed in Boknis Eck (0.5 mmol cm−2 a−). The incubation lasted for 25 days. The volume of water in each core was determined at the end of the experiment via measuring the height of the water column after removing the stirring heads. At the end of the experiments, the bottom water was removed via suction and the cores were sliced for pore water analysis. The pore waters were recovered by centrifuging each respective sediment layer in 50 ml falcon tubes at 3000 rpm for 10 minutes. Afterwards, the supernatant water was transferred to polyethylene (PE) vials in an Ar-filled glove bag to minimize contact with oxygen. All samples were filtered through a 0.2 µm cellulose membrane filter and refrigerated in 25 ml ZinsserTM scintillation vials. TA samples (1 ml) were titrated with 0.02N HCl. For H2S, an aliquot of pore water was diluted. A 5 ml aliquot was frozen directly after the sampling procedure for later nutrient analysis. Nutrient measurements were performed either via manual photometric measurement (NH4) or using a Seal – AnalyticalTM QuAAtro autoanalyzer (PO43-). Samples for TA were analyzed directly after sampling by titration of 1 ml of bottom/pore water with 0.02N HCl. Titration was ended when a stable purple color appeared. During titration, the sample was degassed by continuous bubbling with nitrogen to remove any generated CO2 and H2S. The acid was standardized using an IAPSO seawater standard. Acidified sub-samples (30 μl suprapure HNO3- + 3 ml sample) were prepared for analyses of major and trace elements (Si, Na, K, Li, B, Mg, Ca, Sr, Mn, Ni and Fe) by inductively coupled plasma optical emission spectroscopy (ICP-OES, Varian 720-ES). For H2S, an aliquot of pore water was diluted with appropriate amounts of oxygen-free artificial seawater and the H2S was fixed by immediate addition of zinc acetate gelatin solution

Jobcenter team.arbeit.hamburg / Jugendberufsagenturen Hamburg

Jobcenter team.arbeit.hamburg ist eine gemeinsame Einrichtung der Agentur für Arbeit Hamburg und der Freien und Hansestadt Hamburg. Sie unterstützt Menschen bei der Integration in Ausbildung und Arbeit und erbringt Leistungen zur Sicherung des Lebensunterhalts nach dem Zweiten Buch Sozialgesetzbuch (SGB II). 18 Standorte von Jobcenter team.arbeit.hamburg sind flächendeckend in ganz Hamburg verteilt. Die Zuständigkeit richtet sich nach verschiedenen Einzugsgebieten und ergibt sich daraus, wo eine Person ihre letzte bzw. derzeitige Meldeadresse oder ihren gewöhnlichen Aufenthalt hat. Darüber hinaus gibt es besondere Standorte für Menschen ohne festen Wohnsitz, für schwerbehinderte Menschen und für Selbstständige. Die Jugendberufsagentur Hamburg berät und unterstützt junge Menschen auf ihrem Weg in den Beruf. Sie ist die Anlaufstelle für alle Fragen rund um Ausbildung und Studium sowie zur Bewältigung persönlicher oder familiärer Probleme, die den Weg ins Berufsleben beeinträchtigen. Alle jungen Menschen können sich mit ihren Fragen an den Standort der Jugendberufsagentur ihres Wohnbezirks wenden, unabhängig davon ob sie staatliche Förderleistungen erhalten oder nicht. Es gibt in allen sieben Bezirken Standorte der Jugendberufsagentur und in diesen arbeiten die Mitarbeitenden mehrerer Institutionen unter einem Dach und Hand in Hand: - Die Agentur für Arbeit berät u.a. zur Berufsorientierung bzw. -wahl und Studium und vermittelt in Ausbildung oder Arbeit. - Jobcenter team.arbeit.hamburg vermittelt ebenfalls u.a. in Arbeit, bietet Unterstützungsmaßnahmen oder Hilfestellung bei Schulden- und Suchtproblemen. - Das Hamburger Institut für Berufliche Bildung (HIBB) berät zu Fragen der Schulpflicht, schulischen Bildungs- und Ausbildungsangeboten und vermittelt in Maßnahmen zur Berufsvorbereitung. - Die Bezirke unterstützen bei den Angeboten der Kinder- und Jugendhilfe, helfen bei Wohnungsnotfällen und sonstigen Herausforderungen des alltäglichen Lebens. Das Hamburg Welcome Center (HWC) berät (mögliche) Fachkräfte, die aus dem Ausland zuwandern wollen, und solche, die schon zugewandert sind (auch als Geflüchtete). Es unterstützt bei allen Themen rund um den Weg in Arbeit und Ausbildung sowie zu Einreise und Aufenthalt. Das HWC berät auch Hamburger Unternehmen mit Fachkräftebedarf.

Elementkarte der Digitalen Lithogeochemischen Karte von Bayern 1:25.000 (dLGK25) - Lithium (P90)

Die Elementkarte stellt die räumliche Verteilung der klassifizierten Gehalte des 90. Perzentils von Lithium (in mg/kg) innerhalb der 184 geochemischen Gesteinseinheiten in Bayern dar. In die Auswertung gehen dabei nur die Daten der ersten (von maximal drei) Lithologien einer geochemischen Gesteinseinheit ein. Für Informationen im Hinblick auf die Auswertung der Daten sowie auf die kartenmäßige Darstellung wird auf die Metadaten der digitalen Lithogeochemischen Karte 1:25 000 von Bayern (dLGK25) verwiesen.

Elementkarte der Digitalen Lithogeochemischen Karte von Bayern 1:25.000 (dLGK25) - Lithium (P50)

Die Elementkarte stellt die räumliche Verteilung der klassifizierten Gehalte des 50. Perzentils von Lithium (in mg/kg) innerhalb der 184 geochemischen Gesteinseinheiten in Bayern dar. In die Auswertung gehen dabei nur die Daten der ersten (von maximal drei) Lithologien einer geochemischen Gesteinseinheit ein. Für Informationen im Hinblick auf die Auswertung der Daten sowie auf die kartenmäßige Darstellung wird auf die Metadaten der digitalen Lithogeochemischen Karte 1:25 000 von Bayern (dLGK25) verwiesen.

Porewater chemistry, iron extractions, metabolic rates and microbial analyses from Boknis Eck sediments from January 2022 until March 2023

We collected sediments for pore water analyses via IC, ICP-OESm H2S and Alkalinity measurements, conducted sequential Fe-extractions, determined O2 consumption rates via an enclosed mini Chamber, measured sulfate reduction rates via 35S-SO4 tracer and conducted 16S rRNA amplicon gene analyses (seqeuncing Illumina). Data was generated from Boknis Eck sediments from January 2022 until March 2023.

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