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Analysis of water demand depending on the level of temperature and precipitation
Malý, Vítězslav ; Slavíková, Lenka (advisor) ; Petŕužela, Lubomír (referee)
The demand for water is a very specific variable determined by many factors. The thesis aims to explain how does weather condition influenced the overall character of water demand. Predictions of climate change shows that in terms of CR it can expect changes in total precipitation during the seasons, the increase in average temperatures and a change in the variability and intensity of extreme events. The analysis therefore focuses on clarifying the impact of the level of temperature and precipitation on water withdrawals from public water supply. Analysis used daily data on the collection of water from public water supply for each interested location and daily hydrological data on the level of average daily air temperature and daily rainfall.
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Study of temperature and wetness climate of the sedge-grass littoral during the vegetation season
RANDLOVÁ, Monika
Work is focused on studying thermaly-hygric clime sedge overgrowth concerning to his produce parametres and cubic heterogeneity. In construed baccalaureate work i focused on relation of production above-ground biomass slim sedge (Carex acuta L.), with dampness and thermal clime. Slim sedge (Carex acuta L.) is dominant plant in flood part of damp grass fields. Work lie in destructive following overhead biomass along vegetative season. Highest performance live above-ground biomass was analysed in July 1820 g × m-2, but as compared to next takings to be almost constant, in August was analysed 1670 g ×m-2 and in September be signed growth of live above-ground biomass on 1789 g ×m-2. Dry matter overhead biomass decrease with toward the end of vegetative season. In July value of weight dry matter come to 801 g, in August 676,6g and in September were to be signed lowest value 530 g. Weight measured in September was considerably effected downstream that the persisted from second half of August. With those values relate and diminishing value of LAI that the reached values in July 2,44 m2/m2, in August 1,24 m2/m2 and in September 0,59 m2/m2. Work primary lie it measuring thermal and hygric values. Temperature and dampness differ in growth and above growth. Temperature in growth reached lower values than above growth with whereby bears measured higher values dampness in growth. Baccalaureate work was processed in terms of experimental intention agricultural faculty MSM 600*7*665806 ? permanent tenable management techniques of agricultural economy in foothills and mountain regions focused on making harmony between produce and non-produce use".
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Impact of teperature, fish size and feeding on oxygen consumption and ammonia excretion in the african catfish (Clarias gariepinus)
KOMENDOVÁ, Jana
Aims of this thesis were to assesed the impact of feeding, temperature of water and fish size on ammonia excretion and oxygen consumption in Clarias gariepinus in recirculating system. Fish were divided in 8 weight categories from 21 to 2495 g. Experiments were performed under four temperatures: 22°C, 25°C, 28°C and 30°C. Fish were acclimatized, light conditions were: 14 hours of light period and 10 hours of dark period. Feeding was provided fed four times a day. Starved fish were measured. Measurements were held every two hours. Oxygen consumption was measured by multimeter and ammonia excretion using Nessler?s method. Average daily oxygen consumption in fed fish was dependent on temperature and average individual weight of fish, varied from 10.5 to 96.6 mg O2/kg/h and in hungry fish from 4.3 to 61.8 mg O2/kg/h. TAN excretion varied from 0 to 59.9 mg TAN/kg/h in fed fish and from 0 to 60.8 mg TAN/kg/h in hungry fish. Oxygen consumption increased with increasing temperature. Ammonia excretion was very unstable at all temperatures in all weight categories. Fish had higher ammonia excretion in light period of experiment.
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Spreading of Bryozoa Pectinatella magnifica in Třeboňsko region
LUKEŠOVÁ, Petra
Pectinatella magnifica is a fresh water invertebrate colonial animal originating from North America which spreading, throughout Europe as well as Asia, has recently reached a characteristics of invasion. Charakter of the colonies, their seasonnal dynamics and other development aspects have been studied at six destinations in South Bohemia (lake Cep, Nový Lipnický pond, Hejtman pond, Nový Kanclíř pond, Vlkov sandpit and Hnevkovice water reservoir). Repeated biomass quantitative collections have been carried out in 10 m transects alongside the shoreline. Also the environmental factors have been found out (temperature, conductivity, water reactions, transparency, trophia, colonies substrate) and charakteristics of individual invaded reservoirs. The list of currently known destinations has been completed with another reservoirs into which the species has spread out.
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The influence of temperature and light conditions on reproduction of aquarium fish Anoptichthys jordani
ŠABLATURA, Pavel
In this diploma work the influence of temperature of water and light conditions on reproduction of aquarium fish Anoptichthys jordani was investigated. Experiments were carried out in different light conditions and different temperatures of water. Fish were spawned by a method of pair and group spawning. In the end of the work optimum combination of temperature of water and light conditions on reproduction of the species is mentioned. The results of this work can be used in reproduction of investigated species.
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Vegetation of heat pipelines and participation of invasive species
SVĚTLÍKOVÁ, Petra
Both climate change and plant invasions are phenomenons affecting vegetation structure and its functioning. This study compares vegetation of heat pipelines with surrounding vegetation and investigated survival of thermophilic species in the zone on heat pipelines. Reactions of plants on global warming, including possible invasive behaviour of alien species, are briefly discussed.
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Postprandial thermophily in spiny-tailed agama Uromastyx acanthinurus
STARÁ, Zuzana
Postprandial thermophily (PT) is an increase of preferred body temperature following food consumption. PT helps to maximize digestive functions. We compared the preferred body temperature after feeding in a species Uromastyx acanthinurus. We tested ten individuals and repeated each experiment twice. Our results clearly demonstrate the occurrence of postprandial thermophily in Uromastyx acanthinurus. The average temperature raised 3,82°C after feeding. We found the marginal significance of the relationship between temperature before and after feeding and the length of the individual.
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Microclimatic conditions in train, public city transport and long distance transport driver´s cabins
VÍT, Zbyněk
In my paper I´ve intended to collect theoretical knowledge of the issue of microclimatic conditions in the workplace and it´s impact on health and performance of the worker with the scope to workplaces ? cabins of train, city public transport and long distance transport drivers. I have proceeded from legally binding regulations. In the theoretical part I have described particular requirements and limits of factors affecting the quality of the inner workplace environment. After the theoretical part I have dealt with the practical part where I have proceeded from measurements which I have attended personally. I have completed my own measurements with the results of other measurement records elaborated by State Health Institute in Prague. Perspective measurements were interesting due to the ways technical devices were working and set to provide optimum microclimatic conditions in workplace. The largest measurement results were those from electric train units, known in our railway transport system as ?Pendolino?. While in the workplaces of engine drivers the set year-long inner environment limits have been mainly implemented, in the driver workplaces of public city and long distance transport, summer outside conditions had an impact on significant worsening of the microclimatic conditions ? a big temperature load on drivers, which is impossible to be eliminated without financially demanding measures.
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