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Michał Nowak / Artur Klaczak / Ján Koščo / Paweł Szczerbik / Jakub Fedorčák / Juraj Hajdú / Włodzimierz Popek - 2019Diel dynamics of species richness and fish abundance were studied in three lowland rivers that differed significantly in size (discharge) in to the upper Vistula River drainage system (Poland). Shallow sandy habitats at point bars were repeatedly sampled with beach seining over 24-h periods....Contributeur (s):