Biogenic elements and organic matter in the Sheksna reach of the Rybinsk reservoir

2016 ◽  
Vol 86 (13) ◽  
pp. 2942-2950
Author(s):  
I. E. Stepanova
Keyword(s):  
Organic Matter ◽  
Rybinsk Reservoir ◽  
Biogenic Elements ◽  
The Rybinsk Reservoir

scholarly journals Dependence of Organic Matter’s and Biogenic Elements’ Content on the Rybinsk Reservoir Hydrological Conditions

2015 ◽  
pp. 20-31
Author(s):  
Keyword(s):  
Organic Matter ◽  
Rybinsk Reservoir ◽  
Hydrological Regime ◽  
Biogenic Elements ◽  
Hydrological Conditions ◽  
Crucial Effect ◽  
The Rybinsk Reservoir

This study analyzes hydrological conditions and concentrations of biogenic elements (BE) and organic matter (OM) in the Rybinsk Reservoir for the 2001-2012 period. It also assesses the influence of the reservoir’s hydrological regime on BE and OM. The study suggests that the hydrological regime has a crucial effect on BE and OM concentrations both in seasonal and annual aspects.

Simulating of Phytoplankton Development in the Rybinsk Reservoir

2015 ◽  
pp. 32-40
Author(s):  
Keyword(s):  
Water Exchange ◽  
Rybinsk Reservoir ◽  
Vegetation Period ◽  
Diatom Algae ◽  
Algae Biomass ◽  
Internal Water ◽  
Kinetics Of ◽  
The Rybinsk Reservoir

A model of phytoplankton development within a reservoir including the description of kinetics of its interactions in the ecosystem and internal water exchange of the reservoir has been presented. The carried out calculations of changes of the cyanobacteria and diatom algae biomass in the Rybinsk Reservoir in the vegetation period have shown their satisfactory convergence with the fi eld observations data.

scholarly journals Development of Rural Ecotourism on the Yurshinsky Island of Rybinsk Reservoir

2020 ◽  
Vol 217 ◽  
pp. 05002
Author(s):  
Svetlana Zamana ◽  
Olga Sorokina ◽  
Dmitriy Shapovalov ◽  
Alexandr Fomin ◽  
Larisa Petrova ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Protected Area ◽  
Rybinsk Reservoir ◽  
Chemical Elements ◽  
Soil Samples ◽  
Tourist Industry ◽  
Toxic Chemical ◽  
Young Branch ◽  
The Given ◽  
The Rybinsk Reservoir

Agroecotourism is a relatively young branch of tourist industry in our country, at the same time it has become very popular abroad. The article considers some problems related to the development of rural ecotourism on the Yurshinsky island of Rybinsk reservoir. Various landscapes can be seen on the Yurshinsky island, escaping flowage of the Rybinsk reservoir area, where unique samples of Russian nature have remained untouched. The territory of island makes 792 hectares, half of its land is occupied by woods, and now all island has a status of specially protected area. Moose breeding farm is recommended to be established as the object of rural ecotourism on the Yurshinsky island, as its operation allows the tourist season last all-year-round. Ecological conditions of the territory need to be assessed before the organization of a moose farm and other objects of agroecotourism. Therefore we selected several soil samples to perform chemical analysis as the soil represents the knot of interrelations in biosphere and a lack or surplus of both vital, and toxic chemical elements in the soil will lead to their lack or surplus in plants grown up on such soils and in animal organisms which eat the given plants.

scholarly journals Assessment of the quality of freshwater ecosystems based on the functional condition of bivalved mollusks

2019 ◽  
Vol 46 (2) ◽  
pp. 214-224
Author(s):  
S. V. Kholodkevich ◽  
A. N. Sharov ◽  
G. M. Chuiko ◽  
T. V. Kuznetsova ◽  
M. V. Gapeeva ◽  
...  
Keyword(s):  
Functional State ◽  
Rybinsk Reservoir ◽  
Functional Condition ◽  
Freshwater Ecosystems ◽  
Gulf Of Finland ◽  
Bivalve Mollusks ◽  
Accumulation Of Metals ◽  
The Rybinsk Reservoir ◽  
The Gulf Of Finland

An approach is proposed for ranking the quality of freshwater ecosystems by the state of bivalve mollusks living in them. Cardioactivity indicators and accumulation of metals in the tissues of the mollusks from various waters of the eastern part of the Gulf of Finland and the Rybinsk Reservoir were used to characterize the ecosystems, and an original hyperosmotic test was used to analyze the functional state of the mollusks.

scholarly journals ЗАКОНОМІРНОСТІ ФОРМУВАННЯ ФІТОПЛАНКТОНУ ЗА РІЗНИХ КОНЦЕНТРАЦІЙ БІОГЕННИХ ЕЛЕМЕНТІВ ТА ОРГАНІЧНОЇ РЕЧОВИНИ

2019 ◽  
Vol 75 (1) ◽  
pp. 43-51
Author(s):  
O. V. Kravtsova ◽  
V. I. Scherbak ◽  
M. I. Linchuk
Keyword(s):  
Organic Matter ◽  
Green Algae ◽  
Seasonal Dynamics ◽  
Inorganic Nitrogen ◽  
Biogenic Elements ◽  
Hydrochemical Regime ◽  
Dissolved Phosphorus ◽  
Growing Seasons ◽  
Total Inorganic Nitrogen ◽  
Plankton Communities

The seasonal dynamics of the concentration of nutrients in the form of inorganic nitrogen (NH4+, NO2, NO3-, ΣN), dissolved phosphorus, organic matter and the connection with the development of phytoplankton in waters with high content of total inorganic nitrogen (from 23.31 to 102.65 mg N/dm3) and its compounds (ammonia - from 8.42 to 76.60, nitrate - from 4.94 to 15.93, nitrite - from 0.077 to 4.35 mg N/dm3) and organic matter (from 8.00 to 21.92 mg O/dm3 by permanganate oxidation values and from 58.46 to 265.2 mg O/dm3 by dichromate oxidation values) were analyzed in paper. The peculiarity of the hydrochemical regime of the reservoirs was phenomenally high relations ΣN:P (133,54-12152,86) during the growing seasons. Found that response algal plankton communities such features hydrochemical regime is a simplification of the structure due to the predominance of representatives of departments Euglenophyta, Chlorophyta and Bacillariophyta, while Chrysophyta, Dinophyta, Charophyta and presented Cryptophyta 1-3 species. The response of phytoplankton to the high content of compounds of inorganic nitrogen is the increase in the number and biomass of green algae, and organic matter - eugenic algae.THE REGULARITIES OF PHYTOPLANKTON FORMATION AT VARIOS BIOGENIC ELEMENTS AND ORGANIC MATTER CONCENTRATIONS 

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