scholarly journals ANALYZING STOCK STATUS OF MAIN COMMERCIAL FISH IN KUIBYSHEV RESERVOIR IN 2000–2018 AND EFFECTIVENESS IN FISHING

2021 ◽  
Vol 2021 (1) ◽  
pp. 38-50
Author(s):  
Firdauz Mubarakovna Shakirova ◽  
Yuri Aleksandrovich Severov ◽  
Olga Konstantinovna Anokhina ◽  
Mikhail Aleksandrovich Gorshkov ◽  
Guzel Damirovna Valieva ◽  
...  
Keyword(s):  
Kuibyshev Reservoir ◽  
Age Composition ◽  
Commercial Fish ◽  
Fish Stocks ◽  
Biological Resources ◽  
Temperature Regimes ◽  
The Republic ◽  
Effective Development ◽  
Reproduction Efficiency

The article presents a review of the main commercial fish stocks of the Kuibyshev Reservoir based on the long-term research data (2000–2019). The Kuibyshev Reservoir is the leading fishery reservoir in the Republic of Tatarstan, Mari El, Chuvashia, Ulyanovsk and Samara Re-gions. There have been given the data of regular observing species, sex, size-weight and age composition of fish, their reproduction efficiency, distribution, abundance and reproduction of aquatic biological resources, their habitat, as well as control over their fishing and conservation. The analysis of the influence of environmental factors (level and temperature regimes) and fishing on the fish stocks formation is presented. Based on the presented materials, there have been shown the data about the stocks of the main commercial fish species of the Kuibyshev Reservoir (bream, zander, pike, carp, catfish, sterlet) and of the small-sized ordinary fish stocks, the optimal development of which will bring the catches up to 10 thousand tons and more. It has been inferred that for rational fishing in the reservoir, it is necessary to develop a strategy for the integrated effective development of biological resources of the reservoir on an ecosystem basis for better use of the bioproduction capabilities of its biological resources.

scholarly journals Transboundary Fisheries Management

2020 ◽  
Vol 8 (2) ◽  
pp. 101-130
Author(s):  
Keyuan Zou ◽  
Jiayi Wang
Keyword(s):  
United Nations ◽  
Fisheries Management ◽  
Legal Framework ◽  
Law Of The Sea ◽  
Commercial Fish ◽  
Fish Stocks ◽  
National Jurisdiction ◽  
United Nations Convention ◽  
Transboundary Fisheries

Abstract The United Nations Convention on the Law of the Sea created the exclusive economic zone regime, which makes more than 90 per cent of the world’s commercial fish stocks under the national jurisdiction of coastal States. The biological characteristics of fish demonstrate that the long-term sustainability of fisheries can only be achieved through cooperation and coordination among States, especially for the conservation of transboundary fish stocks. However, the ocean may have more than 1,500 transboundary fish stocks, only a limited number are subjected to effective cooperative management. This article provides an overview of the international legal framework on transboundary fisheries and China’s practice on shared stocks and distant water fisheries, and argues that current bilateral fisheries agreements are not sufficient enough to manage transboundary fish stocks and China still has much to do on regulating distant water fisheries.

Comparative characteristics of fishery indicators of various sturgeon species when grown in natural temperature regimes of water bodies of the Republic of Karelia

2020 ◽  
pp. 53-60
Author(s):  
A. Volkova
Keyword(s):  
Siberian Sturgeon ◽  
Good Survival ◽  
Acipenser Baerii ◽  
Commercial Fish ◽  
Acipenser Ruthenus ◽  
Fish Breeding ◽  
Temperature Regimes ◽  
Hybrid Sturgeon ◽  
Natural Temperature ◽  
The Republic

The paper presents materials on the rearing of Siberian sturgeon of the Lena population (Acipenser baerii Brandt), sterlet (Acipenser ruthenus Linnaeus) and their hybrid sturgeon (Acipenser baerii Brandt × Acipenser ruthenus Linnaeus) in the conditions of natural temperature regimes of natural reservoirs of the Republic of Karelia. It is noted that the climatic conditions of the region allow us to grow sturgeon to marketable sizes in cages in the natural temperature ranges of natural reservoirs. In order to determine the most suitable object for growing, the fish-breeding, biological and morphological indicators of Siberian sturgeon, sterlet and hybrid sturgeon were studied. The results of growing these objects in the cages of the Kedrosero fish hatchery showed their prospects for use in commercial fish farming. The highest indicators were observed when growing Siberian sturgeon, which showed a significantly higher rate of weight growth, good survival and effective use of feed. When grown for three years, the weight of Siberian sturgeon was 2053 g, sterlet — 682 g. The growth rate of the hybrid sturgeon was lower than that of the Siberian sturgeon and higher than that of the sterlet. The assessment of plasticity and exterior indices also showed the advantage of the Siberian sturgeon in comparison with other species. Fish-breeding, biological and morphometric indicators of sterlet and sturgeon hybrid were some lower, however, the high taste and nutritional value of these species make it possible to consider them quite promising objects of cultivation in the Northern regions.

scholarly journals Dietary change in Cape gannets reflects distributional and demographic shifts in two South African commercial fish stocks

2014 ◽  
Vol 72 (3) ◽  
pp. 771-781 ◽  
Author(s):  
David B. Green ◽  
Norbert T. W. Klages ◽  
Robert J. M. Crawford ◽  
Janet C. Coetzee ◽  
Bruce M. Dyer ◽  
...  
Keyword(s):  
South African ◽  
Dietary Change ◽  
Valuable Insight ◽  
Commercial Fish ◽  
Fish Stocks ◽  
Agulhas Current ◽  
Highly Sensitive ◽  
Survey Estimates ◽  
Demographic Shifts

Abstract Seabirds are upper trophic level predators, and are often highly sensitive to changes in the availability of their prey. Altered prey assemblages resulting from fluctuations in oceanographic conditions may be mirrored by shifts in seabird diet. Long-term studies of dietary change in seabirds therefore provide valuable insight into the nature of environmental shifts within the systems in which they forage. In recent decades, the Agulhas region in South Africa has undergone significant oceanographic change related to warming and intensification of the Agulhas current. Concurrent with this change, the population of Cape gannets Morus capensis at Bird Island, Algoa Bay, has grown rapidly, probably as a result of an increased availability of its dominant prey items, sardine Sardinops sagax and anchovy Engraulis encrasicolus. Using one of the longest and most complete time-series available on diet of a seabird (spanning 34 years), we tested for changes in composition and the abundance of dominant prey species of this population. These observed changes were also compared with acoustic survey estimates of their biomass, and annual catch data. Since 1979, the prey composition has remained similar, but the dietary contribution of sardine and anchovy, which fluctuated inversely to each other, increased over the study period. These shifts seem to be reflective of fluctuations in the stock size of sardine and anchovy. Conversely, a third species, saury Scomberesox saurus, dominant in the non-breeding diet of the 1980s, decreased significantly in dietary abundance over the following two decades. It is likely that dietary shifts of Cape gannets at Bird Island were related to climate-mediated oceanographic change. The implications of such changes are discussed.

Sinn Féin and the IRA

2018 ◽  
Author(s):  
Mathew Whiting
Keyword(s):  
Northern Ireland ◽  
Political Institutions ◽  
Sinn Fein ◽  
Peace Processes ◽  
British Rule ◽  
Irish Republicanism ◽  
The Republic ◽  
British State ◽  
State Responses

When Sinn Féin and the IRA emerged in Northern Ireland in 1969 they used a combination of revolutionary politics and violence to an effort to overthrow British rule. Today, the IRA is in a state of ‘retirement’, violence is a tactic of the past, and Sinn Féin is a co-ruler of Northern Ireland and an ever growing political player in the Republic of Ireland. This is one of the most startling transformations of a radical violent movement into a peaceful political one in recent times. So what exactly changed within Irish republicanism, what remains the same, and, crucially, what caused these changes? Where existing studies explain the decision to end violence as the product of stalemate or strategic interplay with the British state, this book draws on a wealth of archival material and interviews to argue that moderation was a long-term process of increasing inclusion and contact with political institutions, which gradually extracted moderate concessions from republicanism. Crucially, these concessions did not necessitate republicans forsaking their long-term ethno-national goals. The book also considers the wider implications of Irish republicanism for other cases of separatist conflict, and has significance for the future study of state responses to violent separatism and of comparative peace processes.

CRITICAL FACTORS OF WATER CONTENT FOR FISH STOCKS IN THE WATER RESERVOIRS OF KAZAKHSTAN

2017 ◽  
pp. 9-18
Author(s):  
Saule Zhangirovna Asylbekova ◽  
Kuanysh Baibulatovich Isbekov ◽  
Evgeniy Vyacheslavovich Kulikov
Keyword(s):  
Water Content ◽  
Water Level ◽  
Water Availability ◽  
Hydrological Regime ◽  
Fishing Effort ◽  
Water Reservoirs ◽  
The Caspian Sea ◽  
Annual Fish ◽  
Commercial Fish ◽  
Fish Stocks

The hydrological regime of water reservoirs in different years has a decisive impact on the abundance of commercial fish stocks and the quality of ichthyocenoses. In this connection in 2015-2016 there was conducted a retrospective analysis and ranking of hydrological regime impact on these factors. The paper gives evaluation of catches and fish stocks under different scenarios of water availability in the main fishing ponds of the Republic of Kazakhstan that give about 80% of the annual fish catch of the country (except the Caspian Sea). There were analyzed 2000 factors of hydrological regime (water level, annual discharge) and 1845 factors of fishing stocks (catches, abundance, fish biomass). The paper determines the critical characteristics of water availability for fish stocks. There have been proposed a number of administrative decisions and actions in case if water content would approach to the critical level. Among them: limitation of fish catches in the following year; widening zones restricted for fishing; intensification of safety measures of the fish young in residual ponds during arid periods; introduction of catch standards for a unit of fishing effort in low-water years, high-water years and years with normal water level in rivers.

Oil pollution and fisheries

1982 ◽  
Vol 297 (1087) ◽  
pp. 401-411 ◽  
Keyword(s):  
Water Quality ◽  
Adverse Effects ◽  
Oil Pollution ◽  
Coastal Areas ◽  
Short Term ◽  
Fish Stocks ◽  
Local Impacts ◽  
Reduced Water ◽  
Long Term Adverse Effects

The term ‘pollution’ is taken in its broadest sense and effects are recognized to be due to interference, tainting and toxicity. Each of these types of impact is discussed and assessed. It is concluded that no long-term adverse effects on fish stocks can be attributed to oil but that local impacts can be extremely damaging in the short term and that produce from specific localities can be tainted and unmarketable for long periods. In some coastal areas oil can be one among several contributors to reduced water quality, and the implications of this are discussed.

Population abundance of the common hippopotamus Hippopotamus amphibius in the Haut Niger National Park, Republic of Guinea / Abondance de la population d'hippopotame commun Hippopotamus amphibius dans le Parc National du Haut Niger, République de Guinée

Mammalia ◽  
2006 ◽  
Vol 70 (1-2) ◽  
Author(s):  
David Brugière ◽  
Bakary Magassouba ◽  
Amidou Sylla ◽  
Halimou Diallo ◽  
Mamadou Sow
Keyword(s):  
National Park ◽  
Buffer Zone ◽  
Wet Season ◽  
Republic Of Guinea ◽  
Hippopotamus Amphibius ◽  
The Status ◽  
Grazing Area ◽  
The Common ◽  
The Republic

AbstractThe Republic of Guinea is thought to contain the largest population of common hippopotamus in West Africa. However, no systematic field survey has been carried out recently and the information available is limited to informal observations. To clarify the status of the common hippopotamus in Guinea, we carried out a biannual population survey along the section of the Niger River (the largest river in Guinea) within the Haut Niger National Park. We counted 93 hippopotamuses in 28 groups in the dry season and 77 hippopotamuses in 23 groups in the wet season. Mean group size and number of neonates did not change between the seasons. Hippopotomuses were more numerous along the river sections bordering uncultivated floodplains. This underlines the significance of this habitat (which is used as a grazing area) for conservation of this species. Haut Niger National Park is the most important protected area in Guinea for conservation of the common hippopotamus. Hippopotamus-human and -cattle conflicts in terms of floodplain use in the park's buffer zone should be closely monitored. Floodplain conversion to rice fields represents one of the most important threats to the long-term conservation of hippopotamus populations in Guinea.

Оксана Кукуруз, Взаимодействие политики и права в процессе общественной трансформации в Украине и Республике Польша

2021 ◽  
pp. 158-162
Author(s):  
Ivanna Kyliushyk
Keyword(s):  
Public Interest ◽  
Book Research ◽  
Social Transformation ◽  
Common Goal ◽  
The Real ◽  
The Public ◽  
The Creation ◽  
The Republic ◽  
Effective Development ◽  
Politics And Law

The author of the book research the interaction of politics and law as two important social regulators that have a common goal the effective development of society. The author defines the real models of interaction between politics and law, which have formed in Ukraine and the Republic of Poland in the process of social transformation, and the creation of an appropriate model, which should be based on the goal of ensuring the public interest.

The issue of assessment of efficiency of works on land reclamation fisheries in inland waters of Russia

2021 ◽  
pp. 8-20
Author(s):  
Andrey Dmitrievich Bykov ◽  
Svetlana Yuryevna Brazhnik
Keyword(s):  
Fish Species ◽  
Land Reclamation ◽  
Long Term Results ◽  
Predatory Fish ◽  
Federal State ◽  
Inland Waters ◽  
Ecological Group ◽  
Spawning Grounds ◽  
Commercial Fish

The article considers the issue of assessing the long-term results of work on fisheries reclamation in inland waters of fisheries significance in Russia, carried out by the branches of the Federal State Budgetary Institution “Glavrybvod” on the state task in terms of their effectiveness. The relationship between dredging and clearing of watercourse beds and the dynamics of the number of producers of semi-navigable and non-aquatic fish in these rivers during spawning migrations has not been established. With long-term mowing of wetland vegetation in the shallow waters of reservoirs, deltas of large rivers and estuaries, there is no increase in their commercial fish productivity. A number of examples show the opposite effect of this type of work, which leads to a local deterioration of the ecological state of these reservoirs. At the same time, the repeatedly proven method of combating higher aquatic vegetation in the reservoirs of the south of Russia in low water conditions as biomelioration, based on the introduction of fish, consumers of autotrophic products by regional branches of the Federal State Budgetary Institution “Glavrybvod” is practically not used. When installing artificial spawning grounds in the littoral zone of reservoirs, regular ichthyological monitoring of the effectiveness of spawning on them is not carried out. There are no reliable data confirming the significant positive impact of artificial spawning grounds on the population dynamics of commercial fish species of the limnophilic ecological group under conditions of significant spring water level depletion in Russian reservoirs. When catching predatory and low-value fish species in water bodies, legal obstacles arise due to the fact that the volume of seizure of predatory fish includes commercial objects for which the ODE is established annually and their catch is already carried out according to industrial quotas.

THE PREFACE TO THE SIX BOOKS OF THE СOMMONWEALTH BY JEAN BODIN. THE FEATURES OF THE GERMAN TRANSLATION BY JOHANN OSWALDT

2020 ◽  
Vol 6 (4) ◽  
pp. 76-90
Author(s):  
Gulnara I. Bayazitova ◽  
Lidiya Yu. Korge
Keyword(s):  
English Translation ◽  
Practical Purpose ◽  
European Continent ◽  
German Translation ◽  
Political Work ◽  
Jean Bodin ◽  
The Republic ◽  
The Way

This article studies the first German translation of the “Six Books on the Republic” by the French lawyer and philosopher Jean Boden, published in 1592. Particular attention is paid to the preface to the treatise, which was written by the translator, a Lutheran priest Johann Oswaldt. There, Oswaldt sets out his position on the “Republic” as well as points out the need for this translation and the relevance of Boden’s treatise for monarchs and rulers. Oswaldt’s foreword is remarkable, firstly, for the terminological synthesis that he carries out. Relying on Boden’s both French and Latin manuscripts of “The Republic”, he carefully selects appropriate German terms to convey their connotations. Second, the German translation of “The Republic” opens the possibility of following the reception of Jean Boden’s ideas in Germany. The authors of this article come to the conclusion that Oswaldt had a practical purpose when he translated the main political work that substantiated the theory of sovereignty. The dedication of the translation to the Duke of Württemberg and the Count of Mümpelgard politicizes his scholarly effort. In fact, following Boden himself, Oswaldt aims to make “The Republic” read and utilized by his patrons. In the long term, the implementation of the ideas outlined in “The Republic” will lead to the foundation of the sovereignty of Württemberg. At the same time, the study of the first German translation has further research implications, since it outlines the area of distribution of Boden’s treatise on the European continent. The German translation followed the Italian and Spanish editions, but appeared earlier than the English translation. Hence, this article might pave the way for studying the reception of the theory of sovereignty in the works of German authors in Russian historiography.

Sign in / Sign up

Export Citation Format

Share Document