10.24411/1728-323X-2018-16122

Physical geography and biogeography, soil geography and landscape geochemistry

THE MAINTENANCE OF THE CHLOROPHYLL "A" AND THE FEATURES OF VERTICAL DISTRIBUTION OF WATER TEMPERATURE IN THE LAKES OF VALDAI AND UZHIN

1. D.V. Vasin, Ph. D. (Geography), Associate Professor, This email address is being protected from spambots. You need JavaScript enabled to view it.,
2. Yu. M. Grishayeva, Ph. D. (Pedagogics), Dr. Habil., Professor, This email address is being protected from spambots. You need JavaScript enabled to view it.,
3. Z. N. Tkachyova, Ph. D. (Pedagogics), Associate Professor, This email address is being protected from spambots. You need JavaScript enabled to view it.,
4. N. A. Martyanova, bachelor, This email address is being protected from spambots. You need JavaScript enabled to view it., Moscow State Regional University, Mytishchi, Russia

The article includes the research that was conducted in the territory of the Novgorod Region in the lakes of Valday and Uzhin. The assessment of the characteristic features of the lakes of this region is given. The research program on the lakes of Valday and Uzhin, as well as the characteristics of the water bodies under study are described.

The analysis of chlorophyll “а” concentrations, water transparency on the raid verticals of the lakes of Valdai and Uzhin and in the source of the Valdayka river as well as temperature indicators of water on three verticals are presented. The purpose of the article is to reveal the features of the vertical distribution of water temperature, transparency, as well as the content of chlorophyll “а” in Valdai and Uzhin lakes.

The research methods. The research and development methodology includes the work with hydrological instruments: a bathometer, an electrothermometer, a pH meter, a white disk for measuring transparency, data analysis from the research, the experience of the Valdai Branch of the Institute of Hydrology in the field of hydrology. In analyzing the state of the problem being investigated, modern scientific publications of Russian and foreign scientists were used.

The results of the research. The features of the vertical course of water temperature, transparency in the lakes of Valdai and Uzhin are considered. The main hydrological patterns for these lakes are indicated. The data on the distribution of chlorophyll “а” are given.

Conclusions of the work. The features of the vertical change in water temperature in the lakes of Valdai and Uzhin were established.

Raid vertical, lake, water bottle, eutrophication, hydrology, water temperature, transparency, thermocline, chlorophyll “а”.

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