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Influence of microplastics on aquatic organisms - an overview study
BÁRTOVÁ, Lucie
The aim of this bachelor thesis was to develop a review summarizing knowledge about the effect of microplastics on aquatic organisms. In recent years, negative impacts of microplastics on aquatic organisms have begun to be observed. This work clarifies the entry paths of microplastics to the water recipient and their occurrence in aquatic ecosystems. The effects of microplastics on aquatic organisms, both vertebrates and invertebrates and phytoplankton, were also presented. To work properly out this bachelor thesis, I have used Czech and foreign sources found in the scientist database. However, many studies are still needed to fully understand the impact of microplastics and deduce clear conclusions. In order to deduce general conclusions from the studies, it is necessary to standardize water sampling methods as well as methods for testing the effects on organisms.
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Should there be fishes in the water? - Ecological Educational program on the importance of water bodies without fish
BEČKOVÁ, Andrea
Water reservoir can be found anywhere in the nature. Small ponds without fish are difficult to be found. Biology students, members of biologically interested societies or wider public who is interested in environment can benefit out of these waters to learn more about relations between particular species, water and littoral plants and interactions between ranges of organisms. Fishing and fish farming do not have negligible impact on nutrition and relaxation of humans, but also they do not have negligible impact on life in waters Nowadays, the overly extended fish population is becoming the main problem that is causing fis predation which decimates pond environment. Fishless ponds are very important to provide environment for other aquatic insects and other organisms. It would be beneficial to devote more attention to the fresh water organisms at the school education through education programs or interest workshops and to have sufficient amount of suitable education resources. In this thesis, I describe relationships between organisms in fresh water reservoir, their relations with surroundings, which factors are influencing them and have impact on their occurrence.
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