RESUMO
Aristolochia clematitis L. is a perennial herbaceous plant distributed throughout Europe, Asia Minor and Caucasus. It has been used as a medicinal plant since antiquity but not in recent times because it contains poisonous aristolochic acid, causing progressive kidney failure. The aim of this work was to study Aristolochia clematitis ecology on the basis of vegetation plots from the European Vegetation Archive, and to investigate the differentiation of its ecological niche using a co-occurrence-based measure of ecological specialization (ESI). The ecological niche was studied on three spatial scales: on the entire distribution area, its differentiation across 200 × 200 km grid cells and the differences between three central and three marginal regions. Our results suggest that Aristolochia clematitis has a very broad ecological niche occurring in a range of different habitats and climatic conditions, with a trend of a niche width decrease with the distance from the geographical center. The plant prefers more stable communities with less anthropogenic influence moving towards the margin of the distribution area. Specialization towards the marginal area is a result of evolutionary history, which refers to the recent anthropogenically induced spread from its original home range. A high incidence of Aristolochia clematitis in the vegetation of arable lands and market gardens as well as anthropogenic herbaceous vegetation in the distribution center corresponds to the geographical incidence of Balkan Endemic Nephropathy.
RESUMO
OBJECTIVE: The aim: To research the indicators of teachers' mental health in a destabilizing organization of professional activities. PATIENTS AND METHODS: Materials and methods: The study was conducted at the Poltava M. V. Ostrogradsky Regional Institute of Postgraduate Pedagogical Education, Poltava V. G. Korolenko National Pedagogical University, Volodymyr Vynnychenko Central State Pedagogical University and Poltava State Medical University in 2018-2020. The sample size of 1817 respondents (Ukraine) included 388 men and 1429 women aged 20 to 57 years. The following methods were used: "Scale of threats to occupational health" (Dziuba, 2015) and "Scale of subjective well-being" (Sokolova, 2007) adapted by T. Dziuba. The study used mathematical and statistical analysis (descriptive statistics, correlation analysis) using IBM SPSS Statistics (version 21.0). RESULTS: Results: It was found that an unstable level of emotional comfort is dominant (57.2%). This is shown by the following indicators: "self-assessment of mental health" 61.0%, "tension and sensitivity" 54.3% and "signs of psychiatric symptoms" 53.0%. Correlation analysis revealed a significant negative impact of the threat factors "daily and weekly overtime" (p <0.01) and "overwork" (p <0.01) on mental health. There is an increase in emotional discomfort in a situation of daily and weekly overtime and overwork. There is a positive correlation between the teachers' mental health and the indicator "significance of the professional environment" (p <0.01). CONCLUSION: Conclusions: The study showed that teachers' mental health in Ukrainian educational organizations is characterized by unstable emotional comfort and increased emotional discomfort, which is a consequence of unbalanced (destabilizing) working conditions: overwork, overtime. The obtained data motivates the need to conduct targete psychotherapeutic and corrective work with teachers who demonstrate professional distress.
