The Impact of Fisheries on the Dynamics of Commercial Fish Species in Barents Sea and the Sea of Azov, Russia: A Historical Perspective

AMBIO ◽  
2004 ◽  
Vol 33 (1) ◽  
pp. 63-67 ◽  
Author(s):  
Gennady G. Matishov ◽  
Vladimir V. Denisov ◽  
Sergey L. Dzhenyuk ◽  
Oleg V. Karamushko ◽  
Dag Daler
Keyword(s):  
Fish Species ◽  
Historical Perspective ◽  
Barents Sea ◽  
Sea Of Azov ◽  
Commercial Fish ◽  
The Sea Of Azov ◽  
The Impact

THE IMPACT OF WIND CONDITIONS ON THE LEVELS OF TOTAL IRON CONTENT IN THE SEA OF AZOV

2017 ◽  
Author(s):  
Yuri Fedorov ◽  
Yuri Fedorov ◽  
Irina Dotsenko ◽  
Irina Dotsenko ◽  
Leonid Dmitrik ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Iron Content ◽  
Iron Concentration ◽  
Total Iron ◽  
Sea Of Azov ◽  
Open Area ◽  
The Sea Of Azov ◽  
Dissolved Iron ◽  
The Impact ◽  
Taganrog Bay

The distribution and behavior of certain of trace elements in sea water is greatly affected by both physical, chemical and hydrometeorological conditions that are showed in the scientific works of prof. Yu.A. Fedorov with coauthors (1999-2015). Due to the shallow waters last factor is one of the dominant, during the different wind situation changes significantly the dynamics of water masses and interaction in the system “water – suspended matter – bottom sediments”.Therefore, the study of the behavior of the total iron in the water of the sea at different wind situation is relevant. The content of dissolved iron forms migration in The Sea of Azov water (open area) varies from 0.017 to 0.21 mg /dm3 (mean 0.053 mg /dm3) and in Taganrog Bay from 0.035 to 0.58 mg /dm3 (mean 0.11 mg /dm3) and it is not depending on weather conditions.The reduction in the overall iron concentration in the direction of the Taganrog Bay → The Sea of Azov (open area) is observed on average more than twice. The dissolved iron content exceeding TLV levels and their frequency of occurrence in the estuary, respectively, were higher compared with The Sea of Azov (open area).There is an increase in the overall iron concentration in the water of the Azov Sea on average 1.5 times during the storm conditions, due to the destruction of the structure of the upper layer and resuspension of bottom sediments, intensifying the transition of iron compounds in the solution.

scholarly journals Mapping and Assessing Commercial Fisheries Services in the Lithuanian Part of the Curonian Lagoon

Fishes ◽  
2022 ◽  
Vol 7 (1) ◽  
pp. 19
Author(s):  
Edgaras Ivanauskas ◽  
Andrius Skersonas ◽  
Vaidotas Andrašūnas ◽  
Soukaina Elyaagoubi ◽  
Artūras Razinkovas-Baziukas
Keyword(s):  
Spatial Distribution ◽  
Residence Time ◽  
Fish Species ◽  
Circulation Model ◽  
Curonian Lagoon ◽  
Water Residence Time ◽  
Total Catch ◽  
Catch Per Unit Effort ◽  
Commercial Fish ◽  
The Impact

The spatial distribution of biomass of main commercial fish species was mapped to estimate the supply of a provisioning fishery service in the Curonian lagoon. Catch per unit effort (CPUE) was used as a proxy to estimate the efficiency of commercial fishing and, subsequently, the potential biomass of fishes. The relationship between distinctive characteristics of the fishing areas and corresponding commercial catches and CPUE was analyzed using multivariate analysis. The total catch values and CPUE used in the analyses were derived from the official commercial fishery records. RDE analysis was used to assess the variation of both catch and CPUE of commercial fish species, while the percentages of bottom sediment type coverage, average depth, annual salinity, and water residence time in each of the fishing squares were used as explanatory variables. This distance e-based redundancy analysis allowed for the use of non-Euclidean dissimilarity indices. Fisheries data spatial distribution map indicated the lack of coherence between the spatial patterns of commercial catches and CPUE distribution in the northern part of the lagoon. Highest CPUE values were estimated in the central-eastern part of the lagoon as compared to the western part of the lagoon where CPUE values were substantially lower. Both total catch and CPUE appeared not to be related to the type of bottom habitats statistically while being spatially correlated in-between. However, the impact of salinity and water residence time calculated using the 3D hydraulic circulation model on the distribution of both CPUE and commercial catches was statistically significant.

Biological Effects of Oil Pollution

1982 ◽  
Vol 14 (9-11) ◽  
pp. 1185-1194 ◽  
Author(s):  
R B Clark
Keyword(s):  
Fish Species ◽  
Deleterious Effect ◽  
Oil Pollution ◽  
Biological Effects ◽  
Detectable Effect ◽  
Commercial Catch ◽  
Commercial Fish ◽  
The Impact ◽  
Biological Context ◽  
Heavy Mortality

Pollution is defined as environmental contamination which has a deleterious effect, and in a biological context it is only mortality which has some impact at the level of the population or community that is important. Thus, very heavy mortality of the eggs and fry of commercial fish species may have no detectable effect on the commercial catch in future years. A reduction in the population of a species which is dominant in its community, on the other hand is likely to result in major ecological adjustment. Oil pollution does not appear to have reduced populations of commercial fish species or seabirds, the two groups of animals about which most fears have been expressed. The marine environment is subject to wide and erratic fluctuations which make it difficult to detect the impact of oil pollution unless the cause is obvious, even then some caution is necessary before attributing environmental change to pollution.

scholarly journals Analysis of medical-ecological and socio-demographic factors of development of the coastal zone of the Sea of Azov

2020 ◽  
Vol 26 (3) ◽  
pp. 105-123
Author(s):  
Olga Arkhipova ◽  
Elena Chernogubova ◽  
Tamara Tarasova
Keyword(s):  
Sustainable Development ◽  
Coastal Zone ◽  
Demographic Factors ◽  
Environmental Safety ◽  
Malignant Neoplasms ◽  
Sea Of Azov ◽  
The Sea Of Azov ◽  
Socio Demographic Factors ◽  
Territorial Water ◽  
The Impact

Coastal zones are integral natural and socio-economic territorial-water system, combined by a complex structure of interactions. Coastal geosystems are unique, rich in natural resources, which determines their attractiveness for industrial and residential, recreational, transport and other activities, but also makes them environmentally vulnerable. Sustainable development of the coastal zone is determined by the economic, social, and environmental components. The research area of interest is the coastal zone of the Sea of Azov (Rostov Region). The subject of the study is the state of medical and environmental safety of the territories. The purpose of the study is the analysis of medical-ecological and socio-demographic factors as the basis for sustainable development of the coastal zone of the Sea of Azov. A systematic approach has been implemented to assess the sustainable development of the coastal zone and to develop methods for analyzing and integrating heterogeneous data. Changes in the coastal zone were evaluated based on a comparative analysis of multizone satellite imagery with ground-based studies, data from thematic maps. For the analysis of medical and environmental safety, an author’s technique was used, combining traditional methods and geoinformation technologies based on ArcGis Desktop*. The environmental quality indicator was considered in terms of the impact on human health. Assessment of demographic security was carried out based on the coefficient of demographic well-being / prosperity of the territory. The incidence rate of malignant neoplasms was considered as a highly informative and socially significant indicator of the health status of the population. For analysis, we used the SSC RAS database for 2006-2016. A comprehensive analysis of the development factors of the coastal zone of the Sea of Azov showed significant problems in the studied region. The most attractive areas of the coastal zone of the Sea of Azov from the point of view of infrastructure development are at the same time subject to changes due to dangerous natural phenomena. Analysis of demographic indicators confirmed the presence of adverse demographic processes.

scholarly journals ACTIVE, PASSIVE AND STABLE SHORES OF THE SEA OF AZOV

2021 ◽  
Vol 1 (6) ◽  
pp. 178-184
Author(s):  
A.E. Tsygankova ◽  
L.A. Bespalova ◽  
A.A. Magaeva ◽  
E.V. Bespalova ◽  
D.A. Podkolzina
Keyword(s):  
Geological Structure ◽  
Coastal Processes ◽  
Type I ◽  
Sea Of Azov ◽  
Natural Factor ◽  
The Sea Of Azov ◽  
Type Iv ◽  
Geological Conditions ◽  
Structure Height ◽  
The Impact

The purpose of this work is to comprehensively study the ecological and geological conditions and the results of monitoring studies of the coastal territories of the Taganrog Bay and the Sea of Azov to identify the degree of manifestation of dangerous coastal processes (DCP). The subject of the study is to assess the degree of manifestation of DCP under the influence of various natural factors, both constant in time (geological structure, height of the coastal cliff), and changing (dynamics of the level, waves, wind regime) and the impact of man-made causes. The performed factor analysis allows us to assert that the main natural factor of the intensification of DCP is the extreme surge levels (adverse end dangerous events: AE and DE). The types of shores are constant, but with different degrees of manifestation of DCP, they change significantly. As a result, according to these studies, maps were constructed for the average long-term (1980), intensive manifestation (2013–2014) and the period with a relatively calm manifestation of the intensity of DCP (2018–2020). According to the activity, the manifestations of DCP are divided into 4 types: type I – with a very high c (>4 m/year), type II – with a high (2–4 m/year), type III – with an average (1–2 m/year), type IV – with a weak rate (<1 m/year) of abrasions, which include subtypes of banks formed by exogenous processes (abrasive, abrasive-landslide, accumulative), indicating the conditions of their formation and the reasons for the isolation of the danger of coastal processes.

INFLUENCE OF PLASTIC DEFORMATION ON THE PHYSICAL PROPERTIES OF GRANULAR QUARTZ

2020 ◽  
pp. 34-44
Author(s):  
Alexander Polyashov ◽  
◽  
Andrey Zaporozhets ◽  
Ivan Nazarov
Keyword(s):  
Plastic Deformation ◽  
Physical Properties ◽  
Luminescence Center ◽  
Crystalline Rocks ◽  
Optical Methods ◽  
Practical Significance ◽  
Sea Of Azov ◽  
The Sea Of Azov ◽  
Luminescence Centers ◽  
The Impact

Purpose. To study traces of plastic deformation in quartz of crystalline rocks of the Sea of Azov. Methodology. Work was done in the field to observe the crystallinity of the crystalline rocks of the Sea of ​​Azov. In laboratory conditions, samples were made from samples taken of rocks and quartz, in which traces of plastic deformation were observed qualitatively by visual and optical methods by transmission and reflection. In natural and ultraviolet light, the physical properties of quartz were quantified, and the effects of luminescence in quartz samples and quartz sandstone material were studied and analyzed. Results. The forms of manifestation of quartzity in crystalline rocks of the Azov Sea were studied, geological bodies composed of quartz were tested, samples were taken from samples taken to observe traces of plastic deformation. The fact of luminescence of granular quartz was established, in which traces of plastic deformation act as luminescence centers. The luminescence of Donbass Carboniferous sandstones is shown, in which quartz grains, which bear traces of plastic deformations, serve as luminescence centers. Scientific novelty. A scientific fact has been established that traces of plastic deformation serve as centers of luminescence of quartz. Practical significance. The established effect of the relationship between quartz luminescence and traces of plastic deformation can be used in the field as a diagnostic sign of plastic deformation of quartz and in mine ones for qualitative control of the impact hazard of Donbass sandstones. Keywords: quartz content, granular quartz, luminescence, luminescence center, traces of plastic deformation, impact hazard of sandstones.

THE IMPACT OF WIND CONDITIONS ON THE LEVELS OF TOTAL IRON CONTENT IN THE SEA OF AZOV

2017 ◽  
Author(s):  
Yuri Fedorov ◽  
Yuri Fedorov ◽  
Irina Dotsenko ◽  
Irina Dotsenko ◽  
Leonid Dmitrik ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Iron Content ◽  
Iron Concentration ◽  
Total Iron ◽  
Sea Of Azov ◽  
Open Area ◽  
The Sea Of Azov ◽  
Dissolved Iron ◽  
The Impact ◽  
Taganrog Bay

The distribution and behavior of certain of trace elements in sea water is greatly affected by both physical, chemical and hydrometeorological conditions that are showed in the scientific works of prof. Yu.A. Fedorov with coauthors (1999-2015). Due to the shallow waters last factor is one of the dominant, during the different wind situation changes significantly the dynamics of water masses and interaction in the system “water – suspended matter – bottom sediments”.Therefore, the study of the behavior of the total iron in the water of the sea at different wind situation is relevant. The content of dissolved iron forms migration in The Sea of Azov water (open area) varies from 0.017 to 0.21 mg /dm3 (mean 0.053 mg /dm3) and in Taganrog Bay from 0.035 to 0.58 mg /dm3 (mean 0.11 mg /dm3) and it is not depending on weather conditions.The reduction in the overall iron concentration in the direction of the Taganrog Bay → The Sea of Azov (open area) is observed on average more than twice. The dissolved iron content exceeding TLV levels and their frequency of occurrence in the estuary, respectively, were higher compared with The Sea of Azov (open area).There is an increase in the overall iron concentration in the water of the Azov Sea on average 1.5 times during the storm conditions, due to the destruction of the structure of the upper layer and resuspension of bottom sediments, intensifying the transition of iron compounds in the solution.

scholarly journals Comparative assessment of amateur fishing influence on water bioresources of Lake Tsatsa in Volgograd region

2021 ◽  
Vol 0 (4) ◽  
pp. 57-62
Author(s):  
Nikolai Vladimirovich Kutsenko ◽  
Yulia Nikolaevna Grozesku ◽  
Anton Alexeyevich Filipenko
Keyword(s):  
Fish Species ◽  
Field Studies ◽  
Quantitative Composition ◽  
Production Volume ◽  
Total Allowable Catch ◽  
Commercial Fish ◽  
Volgograd Region ◽  
The Impact ◽  
Total Stock ◽  
Observation Period

The paper presents the results of research conducted in 2020 on the impact of amateur fishing on the aquatic bioresources of Lake Tsatsa, which is part of the Sarpin Lakes located in the Volgograd region. On the basis of field studies (direct accounting), the number of amateur fishermen who visited the lake, as well as the qualitative and quantitative composition of their catches, was established. According to the data obtained, the total catch of fish by amateur fishermen, as well as the average catch per fisherman, was estimated. The size and weight composition of amateur fishing catches was determined based on the analysis of 2912 fish species. During the observation period 9 fish species were marked as part of amateur fishermen’s catches. The assessment of compliance of aquatic biological resources catch by amateur fishermen with the norms of the current Fishing Regulations was carried out. An assessment of the scale of amateur fishing impact on the aquatic bioresources of Lake Tsatsa is given, according to the analysis of the collected data. The catch of amateur fishermen in 2020 in Lake Tsatsa is amounted to 8.8232 tons, which can account for up to 15% (about 65-70 tons) of the total stock of commercial fish species in the lake. The forecast values of the production volume for industrial fisheries, for which the total allowable catch (TAC) is established and the species for which the recommended catch is determined, are 5.9 and 18.6 tons, respectively. Out of the forecast volumes amateur fishermen additionally catch fish species for which the total allowable catch (TAC) is established (carp, bream, pike) in the amount of 2.858 tons, and species for which the recommended catch value is determined as 5.643 tons.

scholarly journals Web-GIS “Ecological Atlas of the Sea of Azov”

2020 ◽  
Vol 26 (1) ◽  
pp. 561-571
Author(s):  
Olga Arkhipova
Keyword(s):  
Ecological Study ◽  
Web Applications ◽  
Visual Analysis ◽  
Water Protection ◽  
Sea Of Azov ◽  
The South ◽  
Protection Zone ◽  
The Sea Of Azov ◽  
Azov Sea ◽  
The Impact

The methodology for developing a web version of the Electronic Ecological Atlas of the Sea of Azov is based on the use of “cloud” technology of the geoportal — an open platform that is completely built on world industry standards and supports various types of data and services. In 2019, the static part of the Ecological Atlas of the Sea of Azov (Atlas) was completed and posted on the organization’s website, based on the use of standard website creation methods. The objective of the study is to expand the standard means of presenting Atlas data by introducing interactive web applications into it. Web applications are developed on the ArcGis Online platform using Esri standards. As part of the development of the dynamic part of the Atlas, two interactive web applications were created: “Ecological study of the seas of the south of Russia” and “Water Protection Zone of the Sea of Azov”. The application “Ecological study of the seas of the south of Russia” includes thematic maps built on the basis of interactive queries, including maps of the distribution of observation stations by year, by executors and type of observation, as well as infographics and data tables. The web application allows you to create maps that clearly show the results of field research and measurements in the Azov Sea region, as well as allow visual analysis of data from different years, add your own tabular relationships. The purpose of the application developed “Water protection zone of the Azov Sea” is the empowerment of the Atlas through the introduction of interactive web applications tightly themed. One of the objectives is to assess the impact of economic activity on the coastal zone of the Sea of Azov within the water protection zone.

Sign in / Sign up

Export Citation Format

Share Document