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Hodnocení znečištění stojatých povrchových vod zelenými řasami a sinicemi pomocí jejich spektrálních vlastností
LAŠTOVIČKOVÁ, Radka
This diploma thesis deals with the evaluation of pollution of stagnant waters by green algae and cyanobacteria using their spectral properties. We chose the Hracholusky and Švihov reservoirs as a model area for evaluation. In those waters, the degradation was evaluated by determining the chlorophyll- concentration and by obtaining an evaluation reflectance from both the spectroradiometer and satellite images. Based on the results, we are able to determine that a high incidence of chlorophyll- concentration occurs in both water reservoirs, which serves as an indicator of the degree of polluting the body's surface water. In general, it can be argued that the concentration of chlorophyll-a increases in places where no water circulation occurs. In those tanks it is the beginning of the swell and also the shores. The results also demonstrate the great suitability of using Earth remote sensing data to assess the pollution of large bodies of water by algae and cyanobacteria.
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The use of high temporal resolution satellite data for monitoring of water quality
Šmejkalová, Tereza ; Štych, Přemysl (advisor) ; Slačíková, Jana (referee)
The use of high temporal resolution satellite data for monitoring of water quality Abstract Present study compares possibilities of sea water quality monitoring using high temporal resolution satellite data. The theoretical part describes basic principles of remote sensing, the spectral characteristics of water and their change caused by substances present in the water. The analytical modeling methods of chlorophyll-a concentration retrieval from MERIS data are described. In the study three processors are used, standard MERIS processor Case 2 Regional, FUB/Wew Water processor and FLH/MCI processor. In total 10 satellite images are processed, five for each of the two studied areas, the Golfe du Lion in France and Skagerrak and Kattegat straights in Northern Europe. As there is only limited dataset of in situ measurements available to validate the results, it is impossible to decide which of the processors is the most suitable one. It is however clear that none of the globally applicable algorithms can be as accurate as algorithms developed for the exact location and atmospheric actual conditions.
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Monitoring of the occurence of Cyanobacteria in the Seč water resevoir by analytical methods
Štangelová, Pavla ; Tesařová, Eva (advisor) ; Cajthaml, Tomáš (referee)
Cyanobacteria are one of the oldest living organisms on the planet Earth. They are able to survive in different conditions under various conditions, almost in all habitats. The growth of cyanobacteria is affected by the amount of nutrients present in the environment, especially nitrogen and phosphorus, and by the climatic conditions. In larger quantities cyanobacteria began to spread in past few decades due to human activities. As a result of excessive use of fertilizers and washing nutrients from the soil is human-caused eutrophication and expansion of the so-called "water bloom". The presence of cyanobacteria in water is monitored using various analytical methods. The occurrence of cyanobacteria on the water reservoir Seč was determined by fluorimetric detection of pigment c-phycocyanin in samples of natural waters and compared with chlorophyll a content in these samples. Key words: cyanobacteria, c-phycocyanin, chlorophyll-a, fluorimetry
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Monitoring of the occurence of Cyanobacteria in the Seč water resevoir by analytical methods
Štangelová, Pavla ; Tesařová, Eva (advisor) ; Cajthaml, Tomáš (referee)
Cyanobacteria are one of the oldest living organisms on the planet Earth. They are able to survive in different conditions under various conditions, almost in all habitats. The growth of cyanobacteria is affected by the amount of nutrients present in the environment, especially nitrogen and phosphorus, and by the climatic conditions. In larger quantities cyanobacteria began to spread in past few decades due to human activities. As a result of excessive use of fertilizers and washing nutrients from the soil is human-caused eutrophication and expansion of the so-called "water bloom". The presence of cyanobacteria in water is monitored using various analytical methods. The occurrence of cyanobacteria on the water reservoir Seč was determined by fluorimetric detection of pigment c-phycocyanin in samples of natural waters and compared with chlorophyll a content in these samples. Key words: cyanobacteria, c-phycocyanin, chlorophyll-a, fluorimetry
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The use of high temporal resolution satellite data for monitoring of water quality
Šmejkalová, Tereza ; Štych, Přemysl (advisor) ; Slačíková, Jana (referee)
The use of high temporal resolution satellite data for monitoring of water quality Abstract Present study compares possibilities of sea water quality monitoring using high temporal resolution satellite data. The theoretical part describes basic principles of remote sensing, the spectral characteristics of water and their change caused by substances present in the water. The analytical modeling methods of chlorophyll-a concentration retrieval from MERIS data are described. In the study three processors are used, standard MERIS processor Case 2 Regional, FUB/Wew Water processor and FLH/MCI processor. In total 10 satellite images are processed, five for each of the two studied areas, the Golfe du Lion in France and Skagerrak and Kattegat straights in Northern Europe. As there is only limited dataset of in situ measurements available to validate the results, it is impossible to decide which of the processors is the most suitable one. It is however clear that none of the globally applicable algorithms can be as accurate as algorithms developed for the exact location and atmospheric actual conditions.
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