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Messstelle 1452 Böhl-Iggelheim, Böhl (Messstellen-Nr: 2391264500)

Die Messstelle 1452 Böhl-Iggelheim, Böhl in Rheinland-Pfalz dient der Überwachung von Grundwasserstände. Zeitreihen abiotische Parameter werden derzeit nicht gemessen.

Greenhouse gases in the River Elbe, 2020-2024

Measurements of dissovled greenhouse gases (GHG) being CO2, CH4 and N2O were performed from 2020 until 2024. Water samples were taken from bridges at tow locations at the river Elbe; Magdeburg and Wittenberge. For CO2, CH4, and N2O analysis, 30 mL water samples were collected in 60 mL plastic syringes. A headspace of 30 mL ambient air was added. After vigorously shaking for one minute the headspace was transferred to pre-evacuated 12 mL exetainers (Labco, UK) and water temperature in the syringe (=equilibration temperature) was measured. Ambient air samples for headspace correction were taken on each occasion. These samples were analysed in the laboratory with gaschromatography (Koschorreck et al 2021). Water physicochemical parameter (temperature, O2, pH) were measured immediately with a WTW-probe. Water-chemical variables were measured using standard methods as described in Kamjunke et al. (2021).

KOSMOS 2023 Helgoland mesocosm study on ocean alkalinity enhancement: sediment trap particle flux data and water column biogeochemistry

The data presented herein originates from a mesocosm study conducted as part of the BMBF CDRmare, Retake project (grant agreement no. 03F0895A), aimed at investigating the ecological ramifications of ocean alkalinity enhancement (OAE). Twelve mesocosms were deployed in Helgoland South Harbor, Germany, and systematically sampled using integrated water samplers over the period spanning from March 12th to April 20th, 2023. Six alkalinity levels under two dilution scenarios were established to differentiate between localized and uniform OAE additions. Alkalinity was increased stepwise to ΔTAmax = 1250 μmol kg-1 (250 μmol TA kg-1 increments) using sodium hydroxide (NaOH) with calcium chloride (CaCl2) to simulate cation release during calcium-based mineral dissolution, causing strong carbonate chemistry perturbations (e.g., pHT > 9.25). The dataset encompasses a spectrum of sediment trap particle flux data, water column biogeochemistry including pigment variables, inorganic nutrients, carbonate chemistry parameters. The study and data set offer insights into impacts of alkalinity enhancement on marine ecosystems and their associated biogeochemistry.

Messstelle 1473 Edesheim (Messstellen-Nr: 2378127000)

Die Messstelle 1473 Edesheim in Rheinland-Pfalz dient der Überwachung von Grundwasserstände. Zeitreihen abiotische Parameter werden derzeit nicht gemessen.

A global database of dissolved organic matter (DOM) concentration measurements in coastal waters (CoastDOM v.1)

This global database (CoastDOM v.1) contains both previously published and unpublished measurements of Dissolved organic carbon (DOC), nitrogen (DON) and phosphorus (DOP) in coastal waters. The dataset also contains hydrographic data such as temperature and salinity and, to the extent possible, other biogeochemical variables (e.g., Chlorophyll-a, inorganic nutrients) and the inorganic carbon system (e.g., dissolved inorganic carbon and total alkalinity). The data included were collected from 1978 to 2022 and consist of 62339 data points for DOC, 20360 for DON and 13440 for DOP.

Messstelle 1461 Schifferstadt, Queckbrunnerhof (Messstellen-Nr: 2379113200)

Die Messstelle 1461 Schifferstadt, Queckbrunnerhof in Rheinland-Pfalz dient der Überwachung von Grundwasserstände. Zeitreihen abiotische Parameter werden derzeit nicht gemessen.

Messstelle 1477 I Dörrenbach (Messstellen-Nr: 2375145000)

Die Messstelle 1477 I Dörrenbach in Rheinland-Pfalz dient der Überwachung von Grundwasserstände. Zeitreihen abiotische Parameter werden derzeit nicht gemessen.

Messstelle 1477 II Dörrenbach (Messstellen-Nr: 2375146000)

Die Messstelle 1477 II Dörrenbach in Rheinland-Pfalz dient der Überwachung von Grundwasserstände. Zeitreihen abiotische Parameter werden derzeit nicht gemessen.

Messstelle 1235 Harthausen (Messstellen-Nr: 2378111700)

Die Messstelle 1235 Harthausen in Rheinland-Pfalz dient der Überwachung von Grundwasserstände. Zeitreihen abiotische Parameter werden derzeit nicht gemessen.

Schwerpunktprogramm (SPP) 1685: Ecosystem nutrition: forest strategies for limited phosphorus resources; Ökosystemernährung: Forststrategien zum Umgang mit limitierten Phosphor-Ressourcen, Spatial heterogeneity of phosphorus concentration and P speciation in German forest soils

In this project, we will investigate the spatial heterogeneity of soil phosphorus (concentration of total P, P speciation) in soils with different P status with modern analytical (synchrotron-based X-ray spectroscopy and spectromicroscopy) and geostatistical methods at different scales (soil aggregates: (sub)micron to mm scale; particular regions of soil profiles (e.g. root channels, surrounding of stones): mm to dm scale; entire soil profiles: dm to m scale; selected patches of the forest stand: m to 5m scale). We expect that our results will provide new insights about spatial heterogeneity patterns of soil P concentration and P speciation in forest soils and their relevance for P availability and P nutritional status of Norway spruce and European beech.

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