Community Structure and Toxicity Potential of Cyanobacteria during Summer and Winter in a Temperate-Zone Lake Susceptible to Phytoplankton Blooms oleh Łukasz Wejnerowski, Tamara Dulić, Sultana Akter, Arnoldo Font-Nájera, Michał Rybak, Oskar Kamiński, Anna Czerepska, Marcin Krzysztof Dziuba, Tomasz Jurczak, Jussi Meriluoto, Joanna Mankiewicz-Boczek, Mikołaj Kokociński