scholarly journals Current state of ichthiocenosis, species composition and fish populations in small river basins from Pripyatske Polissiya of Ukraine — ways of rehabilitation and restoration

2020 ◽  
pp. 5-21
Author(s):  
V. Sondak ◽  
◽  
O. Volkoshovetz ◽  
N. Kolesnik ◽  
M. Simon ◽  
...  
Keyword(s):  
Species Composition ◽  
River Basins ◽  
River Network ◽  
Small River ◽  
Fish Populations ◽  
Spawning Grounds ◽  
Wintering Grounds ◽  
Current State ◽  
The Creation ◽  
Fish Productivity

Purpose. To study ichthyocenosis, species composition and current state of fish populations in small river basins from Pripyatske Polissiya of Ukraine, to propose the ways of their rehabilitation and restoration. Methodology. The study analysed data for last 60 years on the results of monitoring catches of fish wintering grounds of the first-order tributaries of the Pripyat River — right-bank rivers (rivers Slovechna, Sluch, Tina), as well as more than 300 flood plain lakes of the Desna River. Fish were caught by expeditionary methods using boats, seines and gill nets before ice formation in November-December. Methods generally accepted in ichthyology and ecology as well as surveys of anglers were used. Findings. The study showed the crisis state of the Upper Dnipro region, which was confirmed by the data on a significant decrease in fish productivity. The reasons for this are: non-observance of the basin approach in nature management, ineffective nature conservation measures, lack of measures for the rehabilitation of "natural localities" for the reproduction of native ichthyofauna. It should be noted that the creation of National Reserves and NaturalParks (Shatskyi, Pripyat-Stokhid, Rovenskyi, Polesskyi, Menskyi, etc.) did not significantly affect the general state of the problem, and rather has a declarative meaning. Since, although they still have some places with good reproduction conditions for native flora, fauna and valuable natural landscapes, however, this does not affect the general ecological situation in the river network. This is due to the fact that the surface runoff from territories without destructive human impact, which form the hydrochemical regime, is a fraction of a percent of the total amount. Accordingly, the following is observed: shallowing of river channels, smoothing of the bottom, siltation of wintering grounds, decrease in breeding stock number, degradation of spawning grounds and a lack of artificial stocking measures. This leads to a 10-fold decrease in fish catches in small rivers from Pripyatske Polissiya of Ukraine over the past 20 years. Originality. The study examines the problem of the relationship between the accessary river network and the fish productivity of rivers, including the Kуiv (receiving the flow of the DniprоRiver) and the upper reaches of the Kaniv (receiving the flow of the DesnaRiver) reservoirs. It outlines their role in the functioning of the trilateral natural complex located on the territory of Ukraine, Belarus and Poland. The possibility of creating the ichthyo-ecological reserve "Verhniy Dnipro on the territory of Ukraine on the base of existing protected areas within the Pripyat and Desnyansky hydroecological corridors is analysed. Practical Value. It has been proved that the creation of the "Verhniy Dnipro" will allow not only creating a stable base for the natural reproduction of native ichthyofauna in the upper reaches of the Dnipro reservoir cascade but providing high-quality water to the population of Kyiv and the Kyiv region. The concept of rehabilitation of reproduction and conservation of biodiversity of native ichthyofauna in the river network is proposed to maintain the stability of the biosphere, the implementation of which requires little funds. Keywords: ichthyofauna, ichthyocenosis, ichthyoecosystem, restoration of spawning grounds, PripyatRiver, DniproRiver, DesnaRiver.

scholarly journals Animal Communities in Icelandic Rivers in Relation to Catchment Characteristics and Water Chemistry

1998 ◽  
Vol 29 (2) ◽  
pp. 129-148 ◽  
Author(s):  
Gísli Már Gíslason ◽  
Jón S. Ólafsson ◽  
Hákon Adalsteinsson
Keyword(s):  
Species Composition ◽  
Benthic Invertebrates ◽  
Vegetation Cover ◽  
Benthic Communities ◽  
River Basins ◽  
Fish Populations ◽  
Chironomid Larvae ◽  
Catchment Areas ◽  
Blackfly Larvae ◽  
Animal Communities

Catchment areas of Icelandic rivers are mostly barren or with little vegetation cover in the highlands, but with heathland and mire vegetation in the lowlands. Chemical composition and nutrient availability in Icelandic rivers are influenced by geology, topography and vegetation cover in the river basins. This seems to determine the density and diversity of benthic invertebrates, species composition of anadromous fish and catch of salmon in Icelandic rivers. Species composition of benthic communities is determined by particulate organic matter drifting downstream from river head-waters. Filter feeding blackfly larvae dominate lake outlets, while algal grazing chironomid larvae dominate rivers not influenced by lakes. In well vegetated catchment basins, lake-fed rivers have higher catches of salmon than non-lake fed rivers. Only a few of the rivers flowing from poorly vegetated areas sustain salmon. Glacial rivers have the lowest density and diversity of benthic invertebrates of all river groups and do not sustain fish populations.

scholarly journals The creation of special commodity fish farm on the black sea lakes of Odesa region

2020 ◽  
Vol 22 (92) ◽  
pp. 23-27
Author(s):  
K. I. Bezyk ◽  
M. I. Burhaz ◽  
A. I. Lichna
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Recreational Fisheries ◽  
Commercial Fish ◽  
Current State ◽  
The World ◽  
Forage Base ◽  
The Creation ◽  
The Impact ◽  
Fish Productivity

Pond fisheries are one of the promising areas of fisheries in Ukraine and the world. The vast resources of the inland waters of our country are a reliable source of valuable fishery products. However, the potential of this source is not fully exhausted. Therefore, a significant increase in the production of commercial fish can be achieved as a result of the construction of new commercial fisheries and factories, whose task is to recreate fish stocks. One of the leading places among all kinds of outdoor activities is sports and amateur fishing. Capture fishing has become a permanent fixture for hundreds of millions of people around the world. It is estimated that in Ukraine sport and recreational fisheries cover about 10 % of the population. The purpose of the work was to find out the current state of fish productivity of the Black Sea ponds of Odesa region for the creation of specialized fisheries. The fish productivity of the Black Sea ponds, the forage base and the ichthyofauna were investigated, the most valuable representatives of the ichthyofauna for amateur fisheries in these reservoirs were identified, the recommendations on the creation of a special cultural fishery on the Black Sea ponds were provided. It is established that the feed base in the Black Sea ponds for fish young is quite rich and varied. The current state of development of the forage base indicates the possibility of successful fishing activities and in particular the development of recreational fisheries. In case of intensification of economic activity there is a need to carry out a certain complex of fish-and-melioration works. As a result of the conducted researches it is established that the Black Sea ponds should be used for the creation of cultural fisheries for the purpose of organizing amateur fisheries, and the formation of ichthyocenosis should be carried out by purposeful fishing of valuable fish species suitable as objects of amateur and sport fisheries. Creating appropriate conditions for amateur fisheries as a popular way of recreational recreation of a large part of the population of Ukraine involves solving a number of biological, environmental and legal issues related to the reproduction and acclimatization of fish, the organization of sports and recreational fisheries, taking into account the characteristics of reservoirs, the impact of ecological and climatic conditions fisheries, etc.

The concept of local explosion in freshwater ecosystems

2013 ◽  
Vol 25 (1-2) ◽  
pp. 136-148
Author(s):  
I. V. Gryb
Keyword(s):  
Species Composition ◽  
Aquatic Environment ◽  
Arid Zone ◽  
Fish Fauna ◽  
River Basins ◽  
Freshwater Ecosystems ◽  
Human Society ◽  
Living Matter ◽  
Ecosystem Recovery ◽  
Average Temperature

The concept of an explosion in freshwater ecosystems as a result of the release of accumulated energy, accompanied by the destruction of the steady climax successions of hydrocenoses is presented. The typification of local explosions as well as methods for assessing their risk during the development of river basins are shown. The change in atmospheric circulation, impaired phases of the hydrological regime of rivers, increasing the average temperature of the planet, including in Polesie to 0,6 ºC, deforestation leads to concentration and release of huge amounts of unmanaged terrestrial energy, which manifests itself in the form of disasters and emergencies. Hydroecological explosion is formed as a result of multifactorial external influence (natural and anthropogenic) on the water body in a certain period of time. Moreover, its level at wastewater discharge depends on the mass of recycled impurities and behaved processing capacity of the reservoir, and the mass of dumped on biocides and the possibility of the water flow to their dilution and to the utilization of non-toxic concentrations. In all these cases the preservation of "centers of life" in the tributaries of the first order – local fish reproduction areas contributed to ecosystem recovery, and the entire ecosystem has evolved from equilibrium to non-equilibrium with further restructuring after the explosion and environmental transition to a new trophic level. It means that hydroecological explosion can be researched as the logical course of development of living matter in abiotic environmental conditions, ending abruptly with the formation of new species composition cenoses and new bio-productivity. The buffer capacity of the water environment is reduced due to re-development and anthropic transformation of geobiocenoses of river basins, which leads to a weakening of life resistance. This applies particularly to the southern industrial regions of Ukraine, located in the arid zone that is even more relevant in the context of increased average temperature due to the greenhouse effect, as well as to Polesie (Western, Central and Chernihiv), had been exposed to large-scale drainage of 60-80th years, which contributed to the degradation of peatlands and fitostroma. Imposing the western trace of emissions from the Chernobyl accident to these areas had created the conditions of prolonged hydroecological explosion in an intense process of aging water bodies, especially lakes, change in species composition of fish fauna and the occurrence of neoplasms at the organismal level. Under these conditions, for the existence of man and the environment the vitaukta should be strengthened, i.e. buffer resistance and capacitance the aquatic environment, bioefficiency on the one hand and balanced using the energy deposited - on the other. This will restore the functioning of ecosystems "channel-floodplain", "riverbed-lake", reducing the energy load on the aquatic environment. Hydroecological explosions of natural origin can not be considered a pathology – it is a jump process of natural selection of species of biota. Another thing, if they are of anthropogenic origin and if the magnitude of such an impact is on the power of geological factors. Hydroecological explosions can be regarded as a manifestation of environmental wars that consciously or unconsciously, human society is waging against themselves and their kind in the river basins, so prevention of entropy increase in the aquatic environment and the prevention of hydroecological explosions is a matter of human survival. While the man - is not the final link in the development of living matter, it can develop without him, as matter is eternal, and the forms of its existence are different.

Quantitative and Qualitative Characteristics of Urban Discharge to Small River Basins in the South West of Sweden

1983 ◽  
Vol 14 (3) ◽  
pp. 155-166 ◽  
Author(s):  
Wm. Hogland ◽  
R. Berndtsson
Keyword(s):  
River Basins ◽  
Small River ◽  
The South ◽  
Time Intervals ◽  
Qualitative And Quantitative ◽  
South West ◽  
Quantitative Characteristics ◽  
Qualitative Characteristics ◽  
Qualitative And Quantitative Characteristics

The paper deals with the qualitative and quantitative characteristics of urban discharge. Ratios for urban discharge and recipient flow during different time intervals are presented and discussed. The quality of the urban discharge is illustrated through pollutographs.

Social appreciation for the improvement of tourism management of 20th-century heritage: a methodological proposal

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Gema Ramírez-Guerrero ◽  
Javier García-Onetti ◽  
Juan Adolfo Chica-Ruiz ◽  
Manuel Arcíla-Garrido
Keyword(s):  
20Th Century ◽  
Management Tool ◽  
Future Research ◽  
Analysis Tool ◽  
Content Type ◽  
Cultural Assets ◽  
Current State ◽  
The Social ◽  
Depth Analysis ◽  
The Creation

Purpose This paper attempts to fill the gap that exists in research regarding 20th-century heritage and its social appreciation. The purpose of this paper is to explore different ways of evaluating the heritage value and tourism potential and to propose an innovative model validated in the Zarzuela Hippodrome as an example of cultural asset from 20th century with important economic, social, cultural, aesthetic and architectural aspects. Design/methodology/approach This study opted for an interpretation of heritage from an ecosystem, integrating and global paradigm, understanding the asset as a set of resources that interact with each other, generating a common and enriched tourist experience among all the elements that make it up. From this perspective, it is conceived that by modifying one of the elements, the whole (tourist) ecosystem will be equally influenced. On the other side, it was incorporated non-parametric techniques based on the implementation of surveys for the validation of the tool to the case study of the Zarzuela hippodrome. Findings The results suggest that the hippodrome's internal values have been evaluated very positively, while its external values are low. Through this study, the paper has identified several weaknesses that impede its functioning as a viable “tourist product.” The distance from the city center, the lack of available information and the scarce diffusion and tourism promotion are its main weaknesses. The proposed analysis tool reveals the importance of the active participation of visitors to evaluate cultural assets through the combination of aspects related to the conservation of cultural assets and, in turn, elements that encourage their commodification as tourist products, break down barriers between these two disciplines. Research limitations/implications The management tool proposed in this study can be used to underpin the creation of tourism experiences in cultural or heritage assets by diagnosing the current state of its tourist potential, quantifying its value in relation to the visitors’ perception and making visible those problematic aspects to develop actions to solve them. Although the present study is support for future research, as well as for improving the marketing of heritage in tourist settings, an in-depth analysis of the technical elements of heritage, as well as of its intervention (if applicable), will be necessary for the managers who want to use the tool. Social implications One of the most differentiating characteristics between the construction typology of 20th-century historical buildings is perhaps the scarcity of decorative ornamentation, with exposed concrete being the main surface coating. Many of these constructions have an important cultural and historical relevance, however, the social perception, as regards its consideration as architectural and artistic heritage seems to reflect discordant aspects. This study provides support as a decision-making tool to determine the existing valuation of a building and how to enhance it. Originality/value This study takes steps toward the creation of a model that supports decision-makers and owners of cultural assets through a measurement system that makes it possible to quantify and determine the current state of tourism use through the social evaluation of heritage criteria. It defines which are the elements that favor the resilience of the property or, on the contrary, which are those that undermine its enhancement.

Actual Issues оf Bilingual Hungarian-Bulgarian Lexicography

2021 ◽  
Vol 48 (2) ◽  
pp. 119-129
Author(s):  
Lilyana Lesnichkova ◽  
Keyword(s):  
Foreign Language ◽  
Academic English ◽  
Current State ◽  
The Creation ◽  
Theoretical Foundations ◽  
Selection Of

The article focuses on the presentation of the Hungarian-Bulgarian valence dictionary, which is currently in preparation, against the background of an extremely actual task – the creation of an academic English-Bulgarian dictionary, adequately reflecting the current state of vocabulary in both languages. The author substantiates the need for such a dictionary, given the lack of general and specialized Hungarian-Bulgarian dictionaries, based on the theoretical foundations and principles of modern lexicography. Outlined are the main features of the dictionary, the specificities and approaches in the work of its compilation. The selection of material and the methods of its presentation are in accordance with the practical needs of learners of Hungarian as a foreign language.

scholarly journals THE DEVELOPMENT OF TOPOGRAPHIC MAPPING OF UKRAINE

2021 ◽  
pp. 74-78
Author(s):  
R. Sossa
Keyword(s):  
Spatial Information ◽  
Armed Forces ◽  
Geospatial Data ◽  
Topographic Maps ◽  
Topographic Mapping ◽  
Basic Principles ◽  
Ussr Council ◽  
Current State ◽  
The Creation ◽  
The Military

The basic principles and current state of topographic mapping of the territory of Ukraine are considered. Prior to the proclamation of Ukraine's independence, its territory was covered by topographic maps in the scale of 1:10 000 to 1: 1 000 000, created by the Main Department of Geodesy and Cartography under the USSR Council of Ministers and the Military Topographic Service of the USSR Armed Forces. The interaction of these departments in topographic mapping is highlighted. The topographic study of Ukrainian territory as of 1991 is analyzed in detail. Today the content of most topographic maps of scales from 1:10 000 to 1: 200 000 is characterized by "aging" of information and does not correspond to the current state of the area. The unsatisfactory state of topographic study of the territory led to the unclaimed topographic maps with much outdated information for consumers, and for the military it very difficult to perform combat tasks. The needs of current topographic information users require a significant improvement in topographic maps content. Since the mid-1990s, the creation of national geospatial data infrastructures has become crucial for providing spatial information to the state and society. The basic principles and general requirements for the creation and updating of state topographic maps are now defined by the "Procedure for national topographic and thematic mapping" (2013). The adoption of the Law of Ukraine "On the National Infrastructure of Geospatial Data", giving a powerful impetus to topographic mapping, poses a responsible task of organizational and regulatory and technical support of this process. The issue of obtaining topographic maps from the topographic database requires scientific and technical elaboration, development of appropriate normative and technical documents (guides, principles, instructions, symbols, etc.).

scholarly journals Criminal procedure mechanism of pre-trial settlement of simple criminal and legal disputes: current state and direction of improvement

2019 ◽  
pp. 207-210
Author(s):  
Владимир Шерстнев ◽  
Vladimir Sherstnev
Keyword(s):  
Criminal Law ◽  
Civil Law ◽  
Criminal Procedure ◽  
Administrative Law ◽  
Trial Procedure ◽  
Enforcement Mechanism ◽  
Current State ◽  
The Creation

One of the directions for improving the enforcement mechanism (criminal law norms) is the creation of a simplified pre-trial procedure for resolving simple criminal- legal disputes. The author makes several suggestions for creating such a procedure. This implies increased competition in the legal organization of pre-trial proceedings and the emergence of the possibility of replacing the criminal law measure of liability with administrative law or civil law.

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