scholarly journals RESERVOIR FISH-BREEDING AND RECLAMATION COMPLEXES AS OBJECTS OF FISH FARMING AND ECOLOGICAL IMPROVEMENT OF PHYTO-CONTAMINATED IRRIGATION RESERVOIRS

2021 ◽  
Author(s):  
A. V. Shevchenko ◽  
◽  
G. N. Puras ◽  
Keyword(s):  
Aquatic Vegetation ◽  
Fish Farming ◽  
Water Bodies ◽  
Herbivorous Fish ◽  
Nature Management ◽  
Complex Operation ◽  
Fish Breeding ◽  
Higher Aquatic Vegetation ◽  
Aquatic Flora ◽  
Ecological Improvement

Purpose: development of a layout-structural solution and technology for fish-breeding and reclamation complex operation for ecological improvement of phyto-contaminated reservoirs and fish farming in them. One of the urgent environmental problems typical for river and lake reservoirs is the overgrowth of their shallow waters with higher aquatic vegetation. Phyto-contamination of water bodies leads to a depletion of their ecological biodiversity, displacement of valuable species of aquatic flora and fauna, the decrease in their biological productivity and deterioration of conditions for various environmental management (water supply, fish farming, recreation, etc.). Rational and efficient use of natural resources cannot be ensured without ecological improvement of such objects. One of the directions of phyto-contaminated water bodies treatment is to carry out their biological reclamation by the introduction of herbivorous fish species into them. To increase the efficiency of such reclamation, it is proposed to create and use reservoir fish-breeding and reclamation complexes. Materials and Methods. The experimental and theoretical basis for the development of layout-structural solutions and technologies for the operation of such complexes was provided by known information and author's observations of the stocking of reservoirs. Results. The established shortcomings of the applied technologies led to the need to create the complexes that ensure the cultivation of fish stocking material adapted to the conditions of the stocking reservoir and the implementation of acclimatization measures for introducing herbivorous fish into the water body. Conclusions. The layout-constructive scheme and technology of fish-breeding and reclamation complex operation are proposed, which makes it possible to carry out the ecological improvement of phyto-contaminated reservoirs and, in general, to improve conditions, to increase the complexity, efficiency of using their resource potential and fulfillment of nature management.

scholarly journals CHIRONOMIDAE (INSECTA, DIPTERA) FAUNA OF LOWER DNIPRO. PART 1: SUBFAMILY TANYPODINAE

2021 ◽  
pp. 73-87
Author(s):  
Shevchenko I.V.
Keyword(s):  
Species Composition ◽  
Aquatic Vegetation ◽  
Abiotic Factors ◽  
Benthic Fauna ◽  
Water Bodies ◽  
Distributional Pattern ◽  
Delta Area ◽  
Higher Aquatic Vegetation ◽  
Quantitative Development ◽  
Floodplain Area

The work is the first part of a series of articles intended to comprehensively describe the current state of Chironomidae fauna of the Lower Dnipro on the basis of the long-term studies of larval forms of this group of Diptera insects, widely represented in water bodies of this estuary. Based on the current research, the species composition of larvae of Diptera insects of the Tanypodinae (Diptera, Chironomidae) subfamily, represented in the benthic fauna of various water bodies of the Lower Dnipro, is described. The research was conducted on 18 water bodies, located in the delta and pre-delta areas of the Dnipro River. For the delta area, the following water bodies were researched: mainstream of the Dnipro River, the Viryovchina River, KhersonBilozerskyi floodplain area (the Koshova River, Lake Rohozuvate, Lake Bezmen, Lake Chychkuvate, Lake Stebliivskyi Liman), Kardashynskyi floodplain area (the Chaika River, the strait into Lake Kruhle, the Hadiuchka Strait, Lake Kruhle, Lake Kardashynskyi Liman), Velykyi Potyomkinskyi floodplain area (Lake Zakitne and Lake Nazarove-Pohorile) and Holoprystanskyi floodplain area (Lake Liahushache). For the pre-delta area, the mainstream of the Dnipro River, the Kozak River and Lake Sabetskyi Liman were researched. Based on the obtained data, a characteristic for each of the species of Tanypodinae is given, which includes: the distribution; the seasonality; indicators of quantitative development; the abiotic factors and the species of higher aquatic vegetation inherent in the places of detection of the larvae; the area. The mass and the less developed species of Tanypodinae subfamily and their distributional pattern in the water bodies have been determined. The indexes of occurrence in the benthic samples for the larvae of these species were determined. The comparisons of the indexes for individual water bodies, groups of water bodies (streaming system of the Dnipro River, the tributaries and the straits, the Viryovchina River, the pre-delta area, the delta floodplain areas) and for the water bodies as a whole, were made. The species composition of Tanypodinae larvae of anthropogenically polluted areas of the Lower Dnipro, in particular, its differences for the watercourses and lakes, were noted. Key words: Diptera, larvae, fauna, macrozoobenthos, Lower Dnipro, Chironomidae, Tanypodinae.

scholarly journals Fishing gear and devices for catching fish from fish ponds

2020 ◽  
Vol 2020 (2) ◽  
pp. 75-81
Author(s):  
Dmitriy Alekseevich Kostrykin
Keyword(s):  
Fish Farming ◽  
Water Bodies ◽  
Fishing Gear ◽  
Fish Production ◽  
Fish Ponds ◽  
Biological Resources ◽  
Fish Breeding ◽  
Fishing Gears ◽  
Freshwater Bodies ◽  
Time Of Year

The article is focused on the problems of protection of biological resources and their habitats, the construction of new and improvement of existing fish breeding enterprises, the introduction of modern automation and mechanization of the most labor-intensive stages in the production of fish is a set of priority measures for the development of fish farming aimed at increasing fish production in inland freshwater bodies. Harvesting the fish ponds, regardless of their category, is a difficult and energy-intensive process. Choosing the type of fishing gear and fishing methods used to catch fish ponds primarily depends on the type of reservoir, the state of its hydraulic char-acteristics, as well as the type of fish caught and the time of year. The main categories of water bodies by the method of fish fishing and their features are considered. The used fishing gears are divided into 3 groups according to the principle of fish retention: entangling nets, strainers and sta-tionary gears (traps). It is noted that when fishing in the ponds, it is necessary to take into account the behavior and distribution of the fish. The effective methods for catching pond fish with different fishing gear are presented. The choice of the optimal fishing gear or device for fishing ponds will allow you to clearly plan and coordinate the work of the enterprise, since pond fishing is carried out in the shortest possible time, depending on the timing and needs of the market.

On the introduction of macrophytophagous fish into the of Berezovskaya-1 power plant cooling pond

2021 ◽  
pp. 34-43
Author(s):  
Ludmila Ivanovna Zakonnova ◽  
Igor Vasilievich Nikishkin
Keyword(s):  
Power Plant ◽  
Grass Carp ◽  
Aquatic Vegetation ◽  
Silver Carp ◽  
Environmentally Friendly ◽  
Water Bodies ◽  
Cooling Pond ◽  
Commercial Catch ◽  
Higher Aquatic Vegetation ◽  
Acceptable Method

One of the frequently encountered problems of small cooling ponds at SDPPsis rapid eutrophication and the associatedintensified development of phytoplankton — “hyperblossom” and overgrowth of water bodies with higher aquatic vegetation. As a result of hyperflowering, a huge amount of detritus is deposited on the condenser tubes, reducing the efficiency of the station. The authors analyzed the situation in the cooling pond of Berezovskaya-1 power plant, which was designed with a number of deviations from the “Sanitary rules for the preparation of the reservoir bed and canals for flooding and their sanitary protection”. In this regard, active eutrophication of the reservoir began, which by 2001 reached the stage of “hyper-flowering”. Higher aquatic vegetation has spread in shallow waters and formed “islands” around the peat floating up from the bottom. Among the known measures to combat plant forms, the most environmentally friendly and economically acceptable method of cleaning water bodies with the help of amelioration fish — the silver carp microphytophage and grass carp macrophytophage — is recognized as the most environmentally friendly and economically acceptable. With the undoubted advantage of this method, it has weaknesses, for example, long-term consequences for aboriginal ichthyocenoses in connection with the introduction of competing fish. Due to the fact that, with a sufficient amount of plant feed, grass carp is not a food competitor for the fish and introduced species of the Bereshskoye reservoir and cannot reproduce in the natural environment, it will not reduce the production of local ichthyofauna. Itis recommended to take into account that with a decrease inichthyomass, the infested objectis able to significantly expand the range of food due to benthic and planktonic animals. At the same time, systematic control over the size of the grass carp population should become a mandatory measure, providing for an increase in the commercial catch at the first signs of suppression of aquatic phytocenoses. The authors have calculated the norms of planting material for stocking the cooling pond at Berezovskaya-1 power plant and the fish-breeding indicators that can be obtained 4 years after stocking the cooling pond with grass carp.

scholarly journals Supreme Aquatic Vegetation of the Belaya River Basin in the Vicinity of Sterlitamak

2014 ◽  
pp. 17-30
Author(s):  
Keyword(s):  
Waste Water ◽  
River Basin ◽  
Vegetation Structure ◽  
Industrial Waste ◽  
Aquatic Vegetation ◽  
Water Bodies ◽  
Industrial Waste Water ◽  
Aquatic Flora ◽  
Mineralization Degree ◽  
The City

Results of taxonomic, arealogical and ecological/biological analysis of aquatic flora of the Belaya River in the area of the city of Sterlitamak, the southern part of Bashkortostan have been presented. In the process of studies of water bodies and watercourses of the Belaya River basin near Sterlitamak 43 species out of 30 genera, 20 families and three divisions of supreme vegetations have been found. Water bodies’ flora of the territory under study is typical for the region and possesses an intra/zonal character. It has been shown that the mineralization degree and industrial waste water discharges of major cities directly affect the supreme aquatic vegetation structure and composition.

Higher Aquatic Vegetation of Water Bodies of the Town of Kiev

2007 ◽  
Vol 43 (3) ◽  
pp. 36-56
Author(s):  
I. Yu. Ivanova ◽  
G. V. Kharchenko ◽  
P. D. Klochenko
Keyword(s):  
Aquatic Vegetation ◽  
Water Bodies ◽  
Higher Aquatic Vegetation ◽  
The Town
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