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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Dynamika společenstva makrozoobentosu podhorského toku s početnou populací raka signálního.
 ŠŤASTNÁ, Hana
Assessment of macroinvertebrates population at the Křesanov brook above the town of Vimperk. It contains a large population of the signal crayfish. It is non-native in Europe. Sampling was carried out in 2020. Macroinvertebrates sampling was done. Then, in the laboratory, its determination and detection of abundance and biomass was done. Statistical analyses were subsequently made using hydrobiological indices from the collected data. The analyses compared two stream segments that were different in some parameters.
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The diversity of macrozoobenthos in a stream affected by an outfall of a treated wastewater from wastewater treatment plant
 SOUKUPOVÁ, Tereza
The aim of this work was to evaluate the diversity of macrozoobenthos at Živný stream. This stream flows through the town of Prachatice, where outfall of the town's wastewater treatment plant (WWTP) flown into it. Sampling was carried out in 4 profiles; C, U, E and R, each in five different dates during the year 2015. Saprobic index and Shannon-Wiener diversity index were calculated based on abundance and biomass of macroinvertebrate community. Neither biomass nor abundance did not show any significant differences among sampling profiles. On the contrary the values of saprobic index and diversity index differed significantly among sampling sites (p < 0.05). Highest average value of abundance and biomass of macrozoobenthos was reached above the outfall of WWTP in profile U (2068 ? 1712 ind.m-2), while the lowest average value of abundance was found in profile E under the outfall of WWTP (925 ? 781 ind.m-2). The biomass of macrozoobenthos community was the lowest in the profile R (4.25 g.m-2). The saprobic index ranged from 1.55 to 2.32. These values correspond to betamesosaprobity which reveals that the creek contains moderately to medium organically polluted water. The diversity index was highest in sampling profile C (H' = 2.59), on the contrary in the following profile U, which was placed in the town above the WWTP, the diversity index was lowest (H' = 1.52).
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