The researchers studied the phytoplankton community in a Boron mine waste storage reservoir in Turkey. They looked at the types and amounts of phytoplankton in the water over different seasons. They found that high Boron levels in the reservoir led to a decrease in phytoplankton, especially in the summer. The most common types of phytoplankton were Navicula digitoradiata, Surirella ovata, and Nitzschia amphibia. Overall, the reservoir had fewer types of phytoplankton compared to natural lakes, likely due to the high Boron levels.