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Abnormal shapes of diatoms induced by elevated concentrations of chemical substances.
Budd, Dagmar Marguerite ; Kulichová, Jana (advisor) ; Woodard, Kateřina (referee)
Traditional biomonitoring methods are compared in this thesis with a modern approach which uses fluctuation asymmetry to measure developmental instability and refines biomonitoring methods in order to emphasis the impact of toxigenic substances in freshwater environments. The next section provides information about different types of pollution, with the focus primarily on heavy metal contamination and the impact from increased concentration of these metals on diatom frustules, green algae and other protist organisms. The most common cause of teratological changes comes from heavy metals and the impact of them along with toxicity are analyzed here. What changes is the teratology at the intracellular level and the protist organism morphology, where the cause of the changes can be traced to these heavy metals. The thesis also compares the impact of the heavy metals among different protist organism groups and between each of them. It contains suggested phycoremediation, which in the future could be an ecological solution for the cleanup of rivers and streams. Keywords: fluctuation asymmetry, developmental instability, geometric morphometrics, teratologies, diatoms, morphological asymmetries, biomonitoring
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