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Bioindication evaluation of air condition in the city of Rivne has been carried out using the micronucleus (MN) test on the oral mucous in under-school-age children. The highest maximum values of MN indices were determined for children who live in the studied test ranges, where the content of CO (carbon oxide) exceeds the maximum permissible concentration. Cytogenetic indicators vary in a wide range of numerical values; moreover, the level of cytogenetic damage is an informative bioindicational feature. With the monitoring purpose, the researched urban area of Rivne was divided into 12 test ranges with different anthropogenic load; a number of large and small manufacturing firms are situated there. The analysis of statistical and analytical data on the traffic intensity in the city was conducted. The study was also based on the analysis of personal researches, obtained through a comprehensive survey carried out on 167 children in 12 test ranges in 12 preschools, the average age of children was 6-7 years. A total of 64,950 mucosal epithelial cells were explored.It has been shown that the deterioration of ecological and genetic conditions of the urban environment in test ranges I, II, VI, VII, VIII, XI based on the cell damage level was "below average", the condition of the children's organism was "alarming" but the state of the environment has changed from “excellent” to “satisfactory”.This kind of research can enable observations of the mutagenic background of regions, genetic health, and genetic threats to humans due to harmful factors.
Heracleum sosnowskyi Manden of Caucasian origin is the most dangerous plant for the environment, geosystems, farming and public health. The sap of H. sosnowskyi, its pollen, scent and even dew are dangerous for human health and cause chemical burns, allergic reactions and even deaths. Works on the negative impact of the H. sosnowskyi spread have been published in Ukraine only recently. A more detailed study of H. sosnowskyi is possible only through inspections of each region in Ukraine, which would allow to predict the intensity, rate, frequency and area of phytocoenotic changes, as well as to provide data for cartograms. In the Rivne region, H. sosnowskyi overcomes geographical, ecological, reproductive and coenotic barriers, forms a large number of offspring,massively and rapidly spreads over considerable distances of the studied territory, establishing in anthropogenic and natural coenoses. The dense river network, sufficient moisture, mild climate and the decline of agriculture have created favourable conditions for the spread of H. sosnowskyi.Populations of H. sosnowskyi in the Rivne region have an uneven distribution. The southern part of the oblast has the highest concentration of H. sosnowskyi populations was not found in only three northern districts of the Rivne region. This can be explained by the poor quality of soil. In the central part of the region, the highest concentration of H. sosnowskyi populations was found in the southern and western parts of the city of Rivne. The presence of a large number of springs, rivers and the relief of the Rivne region does not allow the use of chemical plant control methods, as this can lead to significant contamination with herbicides. The most effective method is systematic cutting of shoots prior to flowering and trimming at the root collar.
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