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Physiological responses of plants to arficial light
Holečková, Barbora ; Münzbergová, Zuzana (advisor) ; Konrádová, Hana (referee)
The topic of this bachelor`s thesis is the physiological response od plants to artificial lighting, meaning artificial lighting from street lamps, which is one of the important anthropogenic influences. Artificial lighting at night is referred to by the acronym ALAN (from the english phrase Artificial light at night) and can have a significant effect on plant behaviour. In this thesis, the current knowledge on the influence of streetlights on not only plant behaviour but also on entire ecosystems is summarised in the theoretical part. In the practical part, the chlorophyll content of plants is measured, which is an important parameter informing about their physiological state, i.e. whether nighttime artificial lighting has an influence on it. Subsequently, the detected chlorophyll content of plants under street lighting is compared with that of paired control plants in their surroundings that are not under any artificial lighting. The measurements are carried out using a specially designed instrument for the detection of chlorophyll content in plant leaves called CCM300. The result of the work is the understanding of the possible effect of street lighting Key words Physiological reaction, artificial light at night, plants, chlorophyll
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