Literature data related to N-cycle processes in the Baltic Sea

The dataset compiles literature-derived measurements related to nitrogen cycling processes in the Baltic Sea. It contains approximately 470 records from published studies, covering different regions such as coastal/open-sea environments. The database includes information on: Sampling location and timing: station names, coordinates, month/year, season, and water depth. Environmental conditions: temperature, salinity, oxygen concentration, sediment/water type, and habitat compartment (e.g., benthic systems). Nitrogen-cycle processes: measurements of nitrogen fixation, nitrification, denitrification, anammox, and DNRA, including rates, standard deviations, and incubation times. Methodological details: analytical methods, isotopic tracers, instrumentation, and references to the original publications. Overall, the dataset provides a structured overview of nitrogen transformation rates and environmental drivers across different Baltic Sea ecosystems, supporting comparative analyses and synthesis studies of marine biogeochemical cycling.