Plankton data from 2017 mesocosm experiment manipulating nutrient concentrations (Si:N ratio) and copepod grazing on Baltic Sea plankton community


Data from a mesocosm experiment where the effects of nitrate and phosphate fertilization and copepod grazing pressure on Baltic sea plankton community were followed. Oversupply of nitrogen and phosphorus compounds fertilise aquatic systems but also change the stoichiometry of available nutrients. Here we manipulated N and P concentrations to create a range of Si:N ratios. Plankton and dissolved nutrient samples were collected three times per week for the duration (20 days) of the experiment. Unicelular plankton was fixed with lugol solution after sampling and enumerated following Utermohl method. Picoplankton was enumerated using flow cytometry. Initially, plankton biomass was the highest in high nutrient low Si:N treatments but after the bloom period, this trend switched and phytoplankton biomass was sustained longer in low nutrient high Si:N treatments. Copepods had minor effects on total phytoplankton biomass but did affect the biomass of selected species.

Related Identifier
Metadata Access
Creator Makareviciute-Fichtner, Kriste ORCID logo
Publisher PANGAEA
Publication Year 2023
Funding Reference GEOMAR - Helmholtz Centre for Ocean Research Kiel Crossref Funder ID VH-KO-601 Helmholtz Research School on Ocean System Science and Technology
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 47448 data points
Discipline Earth System Research
Spatial Coverage (10.410 LON, 54.520 LAT); Kieler Bucht
Temporal Coverage Begin 2017-06-19T00:00:00Z
Temporal Coverage End 2017-07-07T00:00:00Z