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Preparation of a laboratory assignment for the Ecology of production subject
Dovčík, František ; Vaněk, Jiří (referee) ; Bača, Petr (advisor)
The thesis deals with the quality of water in general as well as from the perspective of water pollution, wastewater and its treatment within the context of electrotechnical production. The thesis is based on the laboratory task in the practical part, which has been included in the Ecology of Production class. The laboratory task tests the selected indicators of water quality using titration and rapid tests. The thesis is based on the wastewater operation of a company producing PCB.
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Changes in rainfall-runoff regime and biogeochemistry in headwater areas
Fraindová, Kateřina ; Matoušková, Milada (advisor) ; Komínková, Dana (referee) ; Matschullat, Jörg (referee)
Headwater areas are a very important current or potential drinking water source. Their ecological value for the whole ecosystem is equally important. Headwater areas are sites with minimal anthropogenic intervention and usually the least polluted water sources. Changes in climate and rainfall-runoff (R-R) regime together with water quality in these areas affect the status and availability of water further downstream significantly. It is also one of the most sensitive areas and is an early indicator of ongoing changes. This thesis focuses on the main issues that are already ongoing and are affecting the availability of drinking water significantly. Some of these are trends in R-R regime in the context of the climate change and glacier retreat in headwater areas. As a very good example of a mid-latitude river with a complex rainfall-runoff regime, where a large impact of regional climate warming and glacier retreat are strongly manifested, The Athabasca River Basin was selected for this study. Related to this issue is the river water quality, which is influenced by changes in both temperature and R-R regime, together with the increasing occurrence of extreme hydrometeorological situations such as droughts and floods. The effects of land cover on water quality are also analysed, along with consideration of...
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Jakost vody vybraných rybníků v povodí toku Vydrica
Krajči, Filip
The diploma thesis is focused on the assessment of water quality in two successive ponds located on the Vydrica stream in the Malé Karpaty mountains. The analysis and subsequent assessment of water quality is based on field monitoring associated with the collection of samples and their subsequent analysis in the laboratory. The literary research deals with the assessment of water quality, the distribution of water, the distribution of protected landscape areas, but also the methods of management of ponds and the susitability of given ponds from the point of view of fish breeding. The literature review also contains a description of field monitoring indicators and laboratory determinations. The methodological part describes the principles of establishing field research and analysis of monitored water samples in the laboratory and the characteristics of sampling sites. The results obtained by field measurements and subsequent laboratory analysis were evaluated based on STN 75 7221 and Government Regulation No. 269/2010 Coll. After the evaluation, it was found that the water achieved the worst results, especially in the field of indicators reflecting organic pollution (BOD5, CHSKcr). Also, the content of elements such as total nitrogen and total phosphorus reached levels exceeding the limits of the worst class. These facts can further help in the management of the designated areas or in revitalization works in the vicinity, which are planned in the near future.
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Water quality analysis using colorimetry
Kovaldová, Eliška ; Zumberg, Inna (referee) ; Čmiel, Vratislav (advisor)
This bachelor's thesis deals with the analysis of water quality using colorimetry. Part of the work is an introduction to the physical and chemical parameters of water, as well as optical methods, which include photometry, spectrophotometry and colorimetry, and an introduction to regression analysis. These methods and analysis are followed by a practical part by measuring pH, nitrate and water hardness using a spectrophotometer and an AS7262 visible light sensor with a SparkFun development board. At the end of the work there is a comparison of absorption spectra, calibration curves and linear regression parameters of both methods.
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Comparison of water quality of selected outdoor swimming pools
Kozová, Barbora ; Látal, Milan (referee) ; Biela, Renata (advisor)
In the first part, the thesis describes the classification of natural swimming pools according to their type and describes the assessment of their water quality. In the next part of the thesis, natural swimming pools in the South Moravian Region are listed, then several natural swimming pools are compared on the basis of data obtained from the Regional Hygiene Station in Brno. The work focuses on the comparison of water transparency, microbiological indicators, and water temperature. In the conclusion of the thesis, the water quality is evaluated on the basis of these data from the observed bathing sites during the bathing seasons 2020–2022.
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Spatial distribution of eastern ground beetles in the pond
KADLEC, Bohdan
Stone Moroko is one of the non-native fish species in our territory. It is a small carp fish whose origin is in Asia. In many places in the Czech Republic or in abroad, their presence cause damage. The aim of my Bachelor Thesis was to find out more about the behaviour of this weed fish. We were interested to know, how far from the shore it stay. Whether its activity is more intense during the day than at night. Whether the fish appear more at the surface or at the bottom. There were performed 5 measurements on the Kvítkovice pond, each took 24 hours. The measurements were carried out from June till October 2021. The pond was divided into 5 different parts A, B, C, D, E. Piles were used to obtain samples. These were located at the different distances from the shore. In some places, where the depth of the water allowed it, 2 piles were used. One was placed on the bottom and the other one on the surface. Samples were also collected by using a throwing net. At each of the localities A, B, C, D, a throwing net was thrown 5 times in the area of the littoral. Site E was located in the middle of the pond, so catching by the throwing net did not take place here. Water sampling was also monitored at 6 different locations for each sampling. We managed to catch in total 50 fish using a throwing net and 267 fish by using the piles. Four species were represented: Stone Moroko (Pseudorasbora parva), Pumpkinseed (Lepomis gibbosus), Brown Bullhead (Ameiurus nebulosus) and Common Carp (Cyprinus Carpio). Our results show that the activity of weed fish species is higher during the day than at night. We managed to catch 75% of the samples during the day, but only 25% during the night. The Stone Moroko remained more at the bottom, unlike the Pumpkinseed, which occurred mainly at the surface. There was a statistically significant decrease in the number and weight of Stone Moroko with increasing distance from the shore. However, this trend has not been statistically confirmed for variegated Pumpkinseed. The Stone Moroko preferred localities A and C. Pumpkinseed preferred localities D and E. Site B was equally preferred by both species. The most suitable months for obtaining samples are July, August and September. The calculated fish biomass in July was 2.07 kg.ha-1, in August 8,079 kg.ha-1 and in September 2,964 kg.ha-1.
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Vliv pastevních pozemků na parametry vody v malém vodním toku
KUBELOVÁ, Barbora
The diploma thesis deals with the comparison of selected surface water properties in a small watercourse in the "Pasecký potok" and "Váčkový potok" river basins in 2018 and 2019. The evaluation was performed in three currency profiles- the upper specific profile of "Váčkový potok", the lower specific profile of "Váčkový potok" and "Pasecký potok". The differences between these streams are in the management of the landscape and in the use of the landscape by man, which means a significant effect on the chemistry of water in surface water. The monitored hydrochemical indi-cators in the profiles were electrolytic conductivity, pH, insolubles, nitrates, phosphates, total organic carbon, inorganic carbon, total carbon and total nitrogen. Limit values of Government Regulation No. 401/2015 Sb. were not exceeded in the upper profile of "Váčkový potok" and in the profile of "Pasecký potok". The values of total nitrogen was exceeded in the lower specific profile of "Váčkový potok".The basin of the lower profile of "Váčkový potok" is located near arable land and in this profile other values were higher- electrolytic conductivity, pH, nitrates, total organic carbon, inorganic carbon and total carbon were proved. Human intervention in the upper profile of "Váčkový potok" and in "Pasecký potok" is small. We can consider the state of ecosystems here to be the most similar to a natural landscape.
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Vliv přítomnosti či absence střevličky východní (Pseudorasbora parva) na produkci ryb a kvalitu vody v rybnících firmy Blatenská ryba
KOUKOLÍK, Pavel
Topmouth gudgeon (further TG) Pseudorasbora parva (Temminck & Schlegel, 1846) is a small cyprinid naturally occurring in East Asia. TG causes a lot of economic lossess on the pond culture worldwide including Czech Republic. The aim of the present B.Sc. thesis was to assess an effect of TG on fish production and water quality in the ponds of the Blatenská ryba company. The experiment was perfomed in six ponds. Three of them had a control function where two-years common carp was stocked and necessary preventive measures were taken to rule out presence of any pest species. The other three ponds were also stocked by carp, but TG was stocked as well. Water, zooplankton, zoobenthos samples collecting, water properties measurements, topmouth gudgeon sampling and morphometric-gravimetric analyses of caught carp were performed on monthly basis from March to September. From the end of September to the the first half of October all six ponds were harvested, when the overal final fish biomass, health and physical (TL, SL, W, Fulton) condition of the cultured carp were monitored. A remarkable negative influence of TG upon water quality and pond production parameters were found. The impact of TG on water quality is believed to be indirect, due to mass elimination of big size zooplankton species (Daphnia sp.). Zooplankton unavailability caused the carp's foraging shift to zoobenthos, and afterwards carp bioturbation activity when carp digged in the pond ground. This activity resulted in intensive phosphorus releasing from the sediment to the water collumn which in combination with zooplankton absence led to water quality worsening. Moreover, TG presence also had a negative impact on pond production parameters and the health status of the carp stock. Production in ponds with TG was on average 70 % lower compared to the control group. In addition, 29 % of carp suffered from tissue lesions as a consequence of facultative parasitism of TG. The conclusions of the thesis clearly proved that it is necessary to take effective measures to control TG occurrence in pond aquaculture to ensure better economic results and stability of the pond environment.
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