Lake Velie is one of the largest reservoirs in the Novgorod region. It is part of the Valdai National Park and is located on the Valdai Moraine Ridge. However, environmental risks caused by pollution of the aquatic environment in areas where commercial aquaculture is grown, as well as the negative impact of fishery activities on the environment, can become an obstacle to further use of the lake water area for fishery purposes. Summarizing the data obtained, we can state the following: within a radius of 100 meters from the cages, the chemical composition of the water in the column is practically the same as in the central part of the lake.The dispersion of the introduced substance obtained, both empirically and experimentally, corresponds to 50 m. At a distance of 50 m from the cages, water quality class 3 (moderately polluted). However, in a 10-meter zone, the water acquires the characteristic contaminated. In this part of the studied water area, the normative indicators for the content of biogenic substances on the surface and at the bottom are exceeded, and in the near -bottom horizon the numerical indicators are slightly higher than at the surface. This is most likely due to the accumulation of excessively introduced artificial feeds in the bottom horizon. Even with a favorable temperature and oxygen regime of the reservoir, such a situation does not contribute to the cultivation of healthy marketable fish. And the lack of comprehensive monitoring studies may leave unnoticed the prerequisites for the deterioration of water quality in Lake Velje.

According to the requirements of the “Food Security Doctrine of the Russian Federation” and the accompanying “Action Plan for the implementation of the provisions of the Food Security Doctrine of the Russian Federation”, as well as the order of the Ministry of Health and Social Development of the Russian Federation dated 02.08.2010 No. 593n “On approval of recommendations on rational standards of food consumption that meet modern requirements of healthy nutrition”, at least 80% of fish products must be of Russian origin, and the recommended rate of consumption of fish products per capita should be 18-22 kg/year. The following indicators were measured: the concentration of ammonium ions, nitrates, and nitrites, as well as dissolved oxygen. The lack of regular control over the amount of nitrogen-containing compounds in reservoirs used for commercial fish farming does not allow timely identification of the prerequisites for such emergencies.

Field surveying and mapping of anthropogenic landscapes, their analysis, and modelling of the complex processes and structure that are formed in them are all relevant questions in contemporary landscape studies. Numerous territories can be observed in our country where, after reducing or terminating of the anthropogenic activity, landscapes that were impacted to various degrees by human activity start gradually restoring to their previous state, having, however, a modified structure with specific complexity. The present piece of research deals with some theoretical and methodological aspects of the study of the self-restoration of anthropogenic landscapes in Bulgaria.

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The posthumous assisted reproduction is forbidden in Bulgaria due to the Bulgarian tradi-tions and the established legal theory and practice, as well as because of considerations of vari-ous nature: socio-economic, biological, ethical, psychological, etc. However, according to the practices in some foreign countries, the issue concerning this type of reproduction provokes theoretical and practical interest. The author presents her view on the impact of this issue for resolving the problems related to paternity, inheritance and the legal consequences resulting from them.