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Fließgewässermessstelle Luhe, Steg oh. Mdg. Naab, Luhe

Die Messstelle Luhe, Steg oh. Mdg. Naab (Messstellen-Nr: 6106) befindet sich im Gewässer Luhe in Bayern. Die Messstelle dient der Überwachung des biologischen Zustands, des chemischen Zustands, des Grundwasserstands im oberen Grundwasserstockwerk.

Fließgewässermessstelle Dietfurt KW-OW, Altmühl

Die Messstelle Dietfurt KW-OW (Messstellen-Nr: 4172) befindet sich im Gewässer Altmühl in Bayern. Die Messstelle dient der Überwachung des biologischen Zustands, des chemischen Zustands, des Grundwasserstands im oberen Grundwasserstockwerk.

Fließgewässermessstelle Straßenbrücke Obersdorf, Pegel, Rosenbach

Die Messstelle Straßenbrücke Obersdorf, Pegel (Messstellen-Nr: 7786) befindet sich im Gewässer Rosenbach in Bayern. Die Messstelle dient der Überwachung des biologischen Zustands, des chemischen Zustands, des Grundwasserstands im oberen Grundwasserstockwerk.

Grundwassermessstelle DEGM_DENW_100120015: BS 1 KNETTERHDE

Stammdaten und Analysedaten zu den Grundwassermessstellen im EUA-Messnetz: Messtelle DEGM_DENW_100120015 (BS 1 KNETTERHDE)

Chemical and biological characterisation of slicks off the German coast of the Baltic Sea in June of 2024 at 9 stations

To characterise slicks chemically and biologically, on 13th, 16th and 18th of June 2024, slicks and underlying water (depth 1m) were sampled at a total of 9 closely clustered stations in the Baltic Sea off the coast of Warnemünde, Germany. On 13.06. and 16.06. samples were taken in the evening, on the 18.06. samples were taken in the morning. On site, salinity (portable Total Dissolved Solids (TDS)-meter CO-330), water temperature (portable Total Dissolved Solids (TDS)-meter CO-330), wind speed (hand-held anemometer model MS6252A) and light intensity (Galaxy Sensors phone app v.1.10.1) were measured. Slick samples were taken with a glass plate sampler (), samples of the underlying water were taken by a syringe connected to a weighted hose. The samples were fixed as needed and analysed for dissolved organic carbon (DOC) concentration, total dissolved nitrogen (TDN) concentration, surfactant (SAS) concentration, viral particle concentration and cellular abundance of phytoplankton in different size classes (pico-, nano- and microphytoplankton). DOC and TDN concentrations were analysed by high temperature catalytic combustion, SAS concentrations by the voltametric technique with a hanging mercury drop electrode (Ćosović and Vojvodić 1998; Rickard et al. 2019). The concentrations of viral particles and phytoplankton were assessed by flowcytometry (BD Accuri C6 flow cytometer).

Extracellular dissolved organic carbon (DOC) concentrations in axenic and xenic cultures of Thalassiosira gravida in response to varying temperatures and photoperiods

This dataset comprises dissolved organic carbon (DOC) concentrations from axenic and xenic cultures of Thalassiosira gravida that were cultivated at the Alfred-Wegener-Institute (Bremerhaven, Germany) in March, 2023. After a cell density of ~ 15.000 cells * mL-1 was reached, cultures were filtered through a 0.2 µm polycarbonate (PC) filter (Whatman) that was cleaned by soaking in 10 % hydrochloric acid (HCl, Merck suprapure) for at least 12 h and subsequently rinsing with ultrapure water (Merck Millipore MilliQ). DOC was quantified by high temperature catalytic oxidation with a Shimadzu TOC analyzer (VCPN-TOC, Shimadzu) according to Garzón-Cardona et al. 2024; doi: 10.1016/J.JMARSYS.2023.103893. Cultures were grown under two temperatures (9 °C, 13.5 °C) and two photoperiods (16:8 h, 24:0 h light:dark). The aim was to investigate responses of algal extracellular release and bacterial DOC transformation to marine heatwave-like conditions.

Dissolved and particulate trace metal and rare earth element (REE) concentrations during a mesocosm based phytoplankton bloom simulating intertidal coastal conditions

We analyzed concentrations of dissolved and particulate trace metals, including iron (Fe), manganese (Mn), vanadium (V), molybdenum (Mo), thallium (Tl), and rare earth elements (REE), during a mesocosm-based phytoplankton summer bloom mimicking the intertidal zone of the southern North Sea (Jade Bay). The studies aimed to identify key drivers controlling their biogeochemical cycling in dynamic, high-productivity coastal environments. Our results highlight the tidally influenced coastal zone as a critical interface that alters the behavior of supposedly conservative elements such as Mo and Tl (Mori et al., 2021) as well as natural and anthropogenic REE (incl., lanthanum, samarium, and gadolinium) (Mori et al., under review). Trace metal concentrations and shale-normalized REE patterns, determined by quadrupole inductively coupled plasma–mass spectrometry (ICP-MS) and inductively coupled plasma–optical emission spectrometry (ICP-OES), were combined with biogeochemical bulk parameters and pigment-based assessments of phytoplankton growth and community composition (Mustaffa et al., 2020). Trace metal and REE cycling were evaluated in relation to phytoplankton dynamics, particulate organic matter composition (C, N, P), dissolved organic carbon, total dissolved nitrogen, and macronutrient concentrations (nitrate, ammonium, silicate, and inorganic phosphate). The dataset was obtained during a Planktotron-based mesocosm experiment conducted within the framework of the Coastal Ocean Darkening project (Mustaffa et al., 2020).

Mean sediment grain size, total organic carbon content, and carbon isotopic compositions of TOC and solid-phase extracted DOC in bottom water and porewater samples from the German Bight of the North Sea, during RV Heincke cruises HE582 and HE595

This data summarizes site information, sediment textural properties, and bulk geochemical parameters from the same sampling campaigns, including mean grain size, total organic carbon (TOC) content, and carbon isotopic compositions (δ¹³C and F¹⁴C) of both TOC and SPE-DOC in bottom water (BW) and porewater (PW) samples. These data establish the baseline for evaluating the sources, reactivity, and age of organic carbon in sediments and porewaters of the German Bight. Together with the molecular results in doi:10.1594/PANGAEA.989754, they constrain the coupling between sedimentary organic carbon pools and dissolved organic matter dynamics in this shallow-marine environment.

Dissolved organic carbon and solid-phase extracted DOC, and Fourier Transform Ion Cyclotron Resonance Mass Spectrometry results for bottom water and porewater samples collected from the German Bight, during RV Heincke cruises HE582 and HE595

This dataset presents detailed information on the sampling sites, dissolved organic carbon (DOC) concentrations, and molecular characteristics of solid-phase extracted DOC (SPE-DOC) from bottom water (BW) and porewater (PW) samples collected in the German Bight, North Sea, during RV Heincke cruises HE582 and HE595. The data include average elemental compositions (C, H, O, N, S, P) and relative abundances of major compound classes and structural groups derived from FT-ICR-MS analysis. These molecular-level results provide insights into compositional differences between BW and PW DOM and reveal the selective preservation and transformation processes governing organic matter across the sediment–water interface.

Fließgewässermessstelle Plattling Bruecke B8, Isar

Die Messstelle Plattling Bruecke B8 (Messstellen-Nr: 11446) befindet sich im Gewässer Isar in Bayern. Die Messstelle dient der Überwachung des biologischen Zustands, des chemischen Zustands.

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