Dataset - B2FIND

Degradation of diatom-derived dissolved organic matter (DOM) in surface seawater

Stored surface seawater originally collected in the North Sea was amended with dissolved organic matter (DOM) obtained from the diatom Skeletonema marinoi by exposing the diatom...

Seawater carbonate chemistry and physiological performance parameters of Carc...

Ocean acidification causes an accumulation of CO2 in marine organisms and leads to shifts in acid-base parameters. Acid-base regulation in gill breathers involves a net increase...

Colouration of coral Xenia umbellata in a aquarium experiment

One colony per tank (n = 3 per treatment) was photographed every 7 days in a 25°C tank using an Olympus TG6 (ISO 100, f/1.4, 4x magnification). Images were analysed in...

Pulsation rate of coral Xenia umbellata in a aquarium experiment

Pulsations were recorded every 7 days from one colony per tank on three polyps. A pulsation was defined as a full contraction cycle. Counts were taken for 30 seconds in the...

Mortality of coral Xenia umbellata in a aquarium experiment

A colony was considered dead if it fully dissolved, leaving only the plug. Mortality (%) was calculated weekly based on remaining colonies per tank. Xenia umbellata originates...

Chlorophyll-a per algal cell of coral Xenia umbellata in a aquarium experiment

One colony per tank was randomly selected every 7 days and stored at -20°C. On analysis day, colonies were thawed, homogenised in 10 ml demineralised water, and the slurry...

Background parameters of coral Xenia umbellata in a aquarium experiment

Temperature, salinity, oxygen, pH, and light intensity were measured daily, while nutrients (NO₂⁻, NO₃⁻, NH₄⁺, PO₄³⁻, Mg, Ca) were tested twice weekly. Xenia umbellata...

Oxygen fluxes of coral Xenia umbellata in a aquarium experiment

One coral colony per tank was used for oxygen flux measurements, with incubations conducted every 7 days (n = 3 per treatment). On measurement days, oxygen fluxes were assessed...

Specific growth rate of coral Xenia umbellata in a aquarium experiment

Every 3 – 4 days, the number of polyps on one selected colony from each tank was counted. Xenia umbellata originates from the Red Sea. Study location: Aquarium experiment at the...

Algal symbiont density of coral Xenia umbellata in a aquarium experiment

One colony per tank was randomly selected every 7 days and stored at -20°C. On analysis day, colonies were thawed, homogenised in 10 ml demineralised water, and the slurry...

Experimental data on enhanced benthic weathering in organic rich Baltic Sea s...

Enhanced mineral dissolution in the benthic environment is currently discussed as a potential technique for ocean alkalinity enhancement (OAE) to reduce atmospheric carbon...

Seawater carbonate chemistry, pigments and biological processes during experi...

Previous studies have shown that increasing atmospheric CO2 concentrations affect calcification in some planktonic and macroalgal calcifiers due to the changed carbonate...

Impacts of ocean acidification on sediment processes in shallow waters of the...

Despite the important roles of shallow-water sediments in global biogeochemical cycling, the effects of ocean acidification on sedimentary processes have received relatively...

Seawater carbonate chemistry and cellular inorganic carbon fluxes in Trichode...

To predict effects of climate change on phytoplankton, it is crucial to understand how their mechanisms for carbon acquisition respond to environmental conditions. Aiming to...

Seawater carbonate chemistry and photosynthetic performance and N2 fixation i...

Effects of changed levels of dissolved O2 and CO2 on marine primary producers are of general concern with respect to ecological effects of ongoing ocean deoxygenation and...