Phytoplankton in the Gulf of Gdańsk– microscope photos archive

Harmful blooms of cyanobacteria an dinoflagellates are recorded every year in various areas of the Baltic Sea. The data set contains photos of potentially toxic phytoplankton species found in the Gulf of Gdańsk and Puck Bay. These photos show potentialy toxic cyanobacteria and dinoflagellates observed in the surface water samples collected between 2010-2020. The photos were taken using a camera and light microscope at 100x, 200x, or 400x magnification. Additionally, the file contains information (date, station) and physicochemical parameters of waters (temperature, pH), from which samples were taken for taking pictures. Based on the collected data and photos taken, it can be concluded that the most frequent harmful species of algae and cyanobacteria occuring in Polish coastal waters belong to the Nodularia, Aphanizomenon, Dolichospermum, Dinophysis, and Alexandrium genera.