National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Introduction of enzymatic ecotoxicity tests and their use in assessing the quality of the soil ecosystem
Marcinko, Juraj ; Mravcová, Ludmila (referee) ; Zlámalová Gargošová, Helena (advisor)
Assessment of soil quality is possible through a variety of approaches, including the use of ecotoxicological principles, at the organismal or sub-organismal level. It is for this reason that one of the objectives of this thesis was the introduction and implementation of selected enzymatic assays, specifically the evaluation of the enzymatic activities of three enzymes that can represent the microbial activity of the soil. For these purposes, a short-term test was carried out with Lactuca sativa, where pharmacological substances were selected as representatives of xenobiotics with a possible influence on microbial activity in soil and with a potential phytotoxic effect on higher plants. The results obtained indicate a possible inhibitory effect of pharmacological substances on enzymatic activity in soil. In the case of phytotoxicity of pharmacological substances, a significant effect was observed at the organismal level, which was manifested by root elongation. The effect at the sub-organism level was significantly manifested by a disturbance in the ratio of photosynthetic pigment content.
Ecotoxicological evaluation of biochar via organism Folsomia candida
Marcinko, Juraj ; Procházková, Petra (referee) ; Zlámalová Gargošová, Helena (advisor)
The aim of this bachelor thesis was to ecotoxicologically evaluate selected biochar samples and to assess, using a test organism, the possible long-term and short-term effects on soil invertebrates. One of the possible uses of biomass is to convert it into biochar with subsequent application to soil. Soil fauna may be affected after biochar application, therefore ecotoxicological tests in a contact arrangement were chosen. Folsomia candida was used as the test organism. Short-term effects were recorded through escape tests, specifically low abundance of organisms in samples (I) and (T). Significant preference of organisms was observed for sample (O). Samples (I) and (T) had a further impact on the survival of organisms and on the quality of reproduction, where in some cases this caused a resolute impact. Sample (O), at different concentration levels, had no effect on the test organisms. The results of these tests approximate how soil invertebrates could be affected after biochar application.
Ecotoxicological evaluation of biochar via organism Folsomia candida
Marcinko, Juraj ; Procházková, Petra (referee) ; Zlámalová Gargošová, Helena (advisor)
The aim of this bachelor thesis was to ecotoxicologically evaluate selected biochar samples and to assess, using a test organism, the possible long-term and short-term effects on soil invertebrates. One of the possible uses of biomass is to convert it into biochar with subsequent application to soil. Soil fauna may be affected after biochar application, therefore ecotoxicological tests in a contact arrangement were chosen. Folsomia candida was used as the test organism. Short-term effects were recorded through escape tests, specifically low abundance of organisms in samples (I) and (T). Significant preference of organisms was observed for sample (O). Samples (I) and (T) had a further impact on the survival of organisms and on the quality of reproduction, where in some cases this caused a resolute impact. Sample (O), at different concentration levels, had no effect on the test organisms. The results of these tests approximate how soil invertebrates could be affected after biochar application.

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