Pub Date : 2023-03-29DOI: 10.18470/1992-1098-2023-1-34-45
S. Kucherov, S. Kucherova, V. Martynenko, P. V. Velmovskiy
Aim. The objective of this study was to identify and analyze the climatic signal contained in the tree-rings of common oak on the southeastern border of its range in Russia (Ural River basin).Material and Methods. The materials for the study were tree-rings in samples of common oak wood from three sites in the southern part of the Dziau-tyube ridge. Measurements of ring-width were performed on the MBS binocular microscope and on the Lintab measuring complex with the TSAP-WinTM software package. The construction of tree-ring chronologies was carried out in the ARSTAN program. Dendroclimatic analysis was carried out in the R package treeclim.Results. The limiting climatic factors for the radial growth of the common oak on the southeastern border of its range are precipitation during the winter-spring season and the initial period of vegetation and to the greatest extent with the precipitation in March-May. It was shown that the strength of this climatic signal in oak tree rings was not constant over time. The dynamics of this signal are characterized by the presence of local periods of decline, the beginning of which is timed to the years of mass gypsy moth outbreaks.Conclusions. Since the beginning of the 1980s, there has been a significant decrease in the relationship of radial growth with the amount of precipitation for March-May. The reason for this change, in our opinion, could be a strong change in the condition of trees and stands caused by the consistent impact of strong oak defoliation caused by Gypsy moths and late spring frosts.
{"title":"The climatic signal in tree rings of the common oak (Quercus robur L.) on the south-eastern border of its range in the Ural River basin, Russia","authors":"S. Kucherov, S. Kucherova, V. Martynenko, P. V. Velmovskiy","doi":"10.18470/1992-1098-2023-1-34-45","DOIUrl":"https://doi.org/10.18470/1992-1098-2023-1-34-45","url":null,"abstract":"Aim. The objective of this study was to identify and analyze the climatic signal contained in the tree-rings of common oak on the southeastern border of its range in Russia (Ural River basin).Material and Methods. The materials for the study were tree-rings in samples of common oak wood from three sites in the southern part of the Dziau-tyube ridge. Measurements of ring-width were performed on the MBS binocular microscope and on the Lintab measuring complex with the TSAP-WinTM software package. The construction of tree-ring chronologies was carried out in the ARSTAN program. Dendroclimatic analysis was carried out in the R package treeclim.Results. The limiting climatic factors for the radial growth of the common oak on the southeastern border of its range are precipitation during the winter-spring season and the initial period of vegetation and to the greatest extent with the precipitation in March-May. It was shown that the strength of this climatic signal in oak tree rings was not constant over time. The dynamics of this signal are characterized by the presence of local periods of decline, the beginning of which is timed to the years of mass gypsy moth outbreaks.Conclusions. Since the beginning of the 1980s, there has been a significant decrease in the relationship of radial growth with the amount of precipitation for March-May. The reason for this change, in our opinion, could be a strong change in the condition of trees and stands caused by the consistent impact of strong oak defoliation caused by Gypsy moths and late spring frosts.","PeriodicalId":41300,"journal":{"name":"South of Russia-Ecology Development","volume":"135 6 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82986166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-29DOI: 10.18470/1992-1098-2023-1-46-53
M. Astamirova, M. Taysumov, A. Abdurzakova, R. Magomadova, F. S. Omarkhadzhieva
Aim. To carry out floristic zoning of high-mountain landscapes of the Central and North-Eastern Caucasus.Material and Methods. A list of obligate petrophytes was compiled based on the results of processing the authors' own field collections and taking into account information from floristic reports and determinants. The assessment of the similarity of species composition of the flora of the high-mountain landscapes of the Central and North-Eastern Caucasus was carried out according to the Jaccard and S0rensen-Chekanovskiy coefficients.Results. Based on the analysis of similarity of floristic lists, the geographical boundaries were corrected and three floristic regions of petrophilic high-mountain flora were identified.Conclusion. This analysis of the similarity of the petrophilic floras of the high-mountain landscapes of the Central and North-Eastern Caucasus has shown that it is necessary to correct the boundaries of the existing scheme of floristic zoning, since the similarity of coefficients of floristic lists indicates the possibility of combining a number of areas based on a small degree of difference between their floras and the presence of a significant number of species whose ranges are unifying.
{"title":"Floristic zoning of high-mountain landscapes of the Central and North-Eastern Caucasus","authors":"M. Astamirova, M. Taysumov, A. Abdurzakova, R. Magomadova, F. S. Omarkhadzhieva","doi":"10.18470/1992-1098-2023-1-46-53","DOIUrl":"https://doi.org/10.18470/1992-1098-2023-1-46-53","url":null,"abstract":"Aim. To carry out floristic zoning of high-mountain landscapes of the Central and North-Eastern Caucasus.Material and Methods. A list of obligate petrophytes was compiled based on the results of processing the authors' own field collections and taking into account information from floristic reports and determinants. The assessment of the similarity of species composition of the flora of the high-mountain landscapes of the Central and North-Eastern Caucasus was carried out according to the Jaccard and S0rensen-Chekanovskiy coefficients.Results. Based on the analysis of similarity of floristic lists, the geographical boundaries were corrected and three floristic regions of petrophilic high-mountain flora were identified.Conclusion. This analysis of the similarity of the petrophilic floras of the high-mountain landscapes of the Central and North-Eastern Caucasus has shown that it is necessary to correct the boundaries of the existing scheme of floristic zoning, since the similarity of coefficients of floristic lists indicates the possibility of combining a number of areas based on a small degree of difference between their floras and the presence of a significant number of species whose ranges are unifying.","PeriodicalId":41300,"journal":{"name":"South of Russia-Ecology Development","volume":"2019 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87792448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-29DOI: 10.18470/1992-1098-2023-1-6-16
K. Akhmedenov, A. Chibilev
Aim. The aim of this study was to conduct an analysis of long‐term changes in the number of sturgeon populations and its relationship with the fishing regime and the current state of the Ural River basin, as well as develop measures for the conservation and restoration of their resources.Discussion. Six sturgeon species inhabit the waters of the Ural River basin: Huso huso Linnaeus, 1758; Acipenser gueldenstaedtii Brandt & Ratzeburg, 1833; Acipenser persicus Borodin, 1897; Acipenser stellatus Pallas, 1771; Acipenser nudiventris Lovetsky, 1828 and Acipenser ruthenus, 1758. The degradation of the geosystems of the Ural River basin and the Caspian Sea due to changes in the hydrological regime, increased exploitation of oil and gas fields, as well as poaching has led to a decrease in the number of sturgeons. Moreover, the areas used for the development of petroleum hydrocarbons and the development of related infrastructure coincide with the main areas for feeding and migration of sturgeon and other commercial fish species. The Ural River is the only one in Europe with unregulated lower and middle reaches, thanks to which, until the 90s of the last century, favourable conditions were maintained for the natural reproduction of sturgeon and other fish species. In world practice, the development of commercial sturgeon breeding and reproduction of livestock in regional natural reservoirs provide a promising direction for the preservation of the unique sturgeon gene pool. At the same time, the principal role in the formation of the number and species composition of sturgeons, is given to natural reproduction. In the Ural River Basin, there are opportunities to restore the sturgeon population through a combination of natural reproduction and artificial farming.Conclusions. Despite a slight increase in the occurrence of sturgeons in recent decades, the state of their populations requires special conservation measures. It is necessary to develop joint measures for the protection and reproduction of fish stocks at the interstate level.
{"title":"Modern ecological problems of restoration and conservation of the sturgeon population in the Ural River basin","authors":"K. Akhmedenov, A. Chibilev","doi":"10.18470/1992-1098-2023-1-6-16","DOIUrl":"https://doi.org/10.18470/1992-1098-2023-1-6-16","url":null,"abstract":"Aim. The aim of this study was to conduct an analysis of long‐term changes in the number of sturgeon populations and its relationship with the fishing regime and the current state of the Ural River basin, as well as develop measures for the conservation and restoration of their resources.Discussion. Six sturgeon species inhabit the waters of the Ural River basin: Huso huso Linnaeus, 1758; Acipenser gueldenstaedtii Brandt & Ratzeburg, 1833; Acipenser persicus Borodin, 1897; Acipenser stellatus Pallas, 1771; Acipenser nudiventris Lovetsky, 1828 and Acipenser ruthenus, 1758. The degradation of the geosystems of the Ural River basin and the Caspian Sea due to changes in the hydrological regime, increased exploitation of oil and gas fields, as well as poaching has led to a decrease in the number of sturgeons. Moreover, the areas used for the development of petroleum hydrocarbons and the development of related infrastructure coincide with the main areas for feeding and migration of sturgeon and other commercial fish species. The Ural River is the only one in Europe with unregulated lower and middle reaches, thanks to which, until the 90s of the last century, favourable conditions were maintained for the natural reproduction of sturgeon and other fish species. In world practice, the development of commercial sturgeon breeding and reproduction of livestock in regional natural reservoirs provide a promising direction for the preservation of the unique sturgeon gene pool. At the same time, the principal role in the formation of the number and species composition of sturgeons, is given to natural reproduction. In the Ural River Basin, there are opportunities to restore the sturgeon population through a combination of natural reproduction and artificial farming.Conclusions. Despite a slight increase in the occurrence of sturgeons in recent decades, the state of their populations requires special conservation measures. It is necessary to develop joint measures for the protection and reproduction of fish stocks at the interstate level.","PeriodicalId":41300,"journal":{"name":"South of Russia-Ecology Development","volume":"76 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86102979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-30DOI: 10.18470/1992-1098-2022-4-182-196
V. M. Pavleichik, Z. Sivohip
Aim. To record factually the development of floating islands on Lake Chebarkul (Davletovo) as a landscape‐hydrological phenomenon in the Ural River basin and in the Southern Trans‐Urals, to determine the mechanisms of formation and to identify the specific features of their morphostructure, intra‐annual movements and long‐term dynamics.Materials and Methods. Based on images of high (2003–2020) and medium (1972–2020) spatial resolution, an analysis was made of qualitative and quantitative indicators reflecting the long‐term and intra‐ annual dynamics of the state of floating islands (mats) and coastal thickets of macrophytes («splavina» or «labza» in Russian).Results. It was established that the main source of material for the islands were the coastal thickets of macrophytes at the site of the confluence of watercourses into the lake (Yangelka River and Mogak Crrek), which periodically (during periods of extreme spring floods) lose contact with coastal shallow waters and are carried into the lake. The high variability of the states and the dynamism of the displacement of the islands, as well as the tendency to reduce the number and area of the islands and coastal thickets of macrophytes, caused, among other factors, by the consequences of the anomalous summer flood of 2013, were revealed. Being in an unfixed state, floating islands drift along the water area of the lake for considerable distances, reaching 10–15 km or more during the ice‐ free period of the year. The main driving force is the wind, which causes prevailing alongshore displacements of the islands: as a result of collisions, they are reduced in size and acquire a rounded shape in plan.Conclusion. Throughout the historical period, floating islands around the world have been perceived as a landscape phenomenon that deserves protection and rational use. Lake Chebarkul with floating islands is of undoubted interest as an object of geographical, hydrological, ecological and biological research.
{"title":"Landscape‐hydrological phenomenon of the formation of floating islands on Lake Chebarkul (Davletovo) in the Ural River basin, Russia","authors":"V. M. Pavleichik, Z. Sivohip","doi":"10.18470/1992-1098-2022-4-182-196","DOIUrl":"https://doi.org/10.18470/1992-1098-2022-4-182-196","url":null,"abstract":"Aim. To record factually the development of floating islands on Lake Chebarkul (Davletovo) as a landscape‐hydrological phenomenon in the Ural River basin and in the Southern Trans‐Urals, to determine the mechanisms of formation and to identify the specific features of their morphostructure, intra‐annual movements and long‐term dynamics.Materials and Methods. Based on images of high (2003–2020) and medium (1972–2020) spatial resolution, an analysis was made of qualitative and quantitative indicators reflecting the long‐term and intra‐ annual dynamics of the state of floating islands (mats) and coastal thickets of macrophytes («splavina» or «labza» in Russian).Results. It was established that the main source of material for the islands were the coastal thickets of macrophytes at the site of the confluence of watercourses into the lake (Yangelka River and Mogak Crrek), which periodically (during periods of extreme spring floods) lose contact with coastal shallow waters and are carried into the lake. The high variability of the states and the dynamism of the displacement of the islands, as well as the tendency to reduce the number and area of the islands and coastal thickets of macrophytes, caused, among other factors, by the consequences of the anomalous summer flood of 2013, were revealed. Being in an unfixed state, floating islands drift along the water area of the lake for considerable distances, reaching 10–15 km or more during the ice‐ free period of the year. The main driving force is the wind, which causes prevailing alongshore displacements of the islands: as a result of collisions, they are reduced in size and acquire a rounded shape in plan.Conclusion. Throughout the historical period, floating islands around the world have been perceived as a landscape phenomenon that deserves protection and rational use. Lake Chebarkul with floating islands is of undoubted interest as an object of geographical, hydrological, ecological and biological research.","PeriodicalId":41300,"journal":{"name":"South of Russia-Ecology Development","volume":"57 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85998099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-30DOI: 10.18470/1992-1098-2022-4-206-211
L. S. Akhmedova, A. Magomedova, R. T. Radjabova
Aim. Evaluation of the possibilities of mathematical logic and logical‐mathematical methods in the description of complex natural systems in simple and clear constructions, as they act as a language, special research methods, a source of ideas and concepts in natural science.Discussion. The article discusses the possibilities and advantages of logical and mathematical methods in the analysis of natural science information, and, in particular, environmental data. It gives a comparative overview of logical and mathematical constructions in the formation of scientific thinking. The list of the most common mathematical and logical symbols for the formalised recording of complex ecological systems is provided, together with examples of the use of logical and mathematical formulas as formal and implicative statements in the brief recording of natural science information.Conclusion. The research conducted does not convincingly indicate unambiguous advantages of using the symbols of mathematical logic rather than verbal presentation. However, since ecology deals with the description of arch‐complex systems, including operations of formalised problem statement, the formalised structuring of ecosystems, the grouping of ecosystems according to measures of their similarity‐difference or inclusion–intersection, and the classification of selected ecosystems in a certain specified group, the need for widespread application of logical and mathematical research is indisputable.
{"title":"Application of logical and mathematical methods for the analysis of environmental information","authors":"L. S. Akhmedova, A. Magomedova, R. T. Radjabova","doi":"10.18470/1992-1098-2022-4-206-211","DOIUrl":"https://doi.org/10.18470/1992-1098-2022-4-206-211","url":null,"abstract":"Aim. Evaluation of the possibilities of mathematical logic and logical‐mathematical methods in the description of complex natural systems in simple and clear constructions, as they act as a language, special research methods, a source of ideas and concepts in natural science.Discussion. The article discusses the possibilities and advantages of logical and mathematical methods in the analysis of natural science information, and, in particular, environmental data. It gives a comparative overview of logical and mathematical constructions in the formation of scientific thinking. The list of the most common mathematical and logical symbols for the formalised recording of complex ecological systems is provided, together with examples of the use of logical and mathematical formulas as formal and implicative statements in the brief recording of natural science information.Conclusion. The research conducted does not convincingly indicate unambiguous advantages of using the symbols of mathematical logic rather than verbal presentation. However, since ecology deals with the description of arch‐complex systems, including operations of formalised problem statement, the formalised structuring of ecosystems, the grouping of ecosystems according to measures of their similarity‐difference or inclusion–intersection, and the classification of selected ecosystems in a certain specified group, the need for widespread application of logical and mathematical research is indisputable.","PeriodicalId":41300,"journal":{"name":"South of Russia-Ecology Development","volume":"10 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84197608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-30DOI: 10.18470/1992-1098-2022-2-233-263
G. Petherbridge, A. Gadzhiev, А. М. Shestopalov, A. Alekseev, K. Sharshov, M. G. Daudova
Aim. Formulation of the outlines of the concept of ViEW (Viral Early Warning) which is intended as a long term system of multidisciplinary transboundary cooperation between specialist institutions of all five Caspian region states to research, regularly monitor and share data about the generation, transmission and epidemiology of avian‐borne pathogens and their vectors in the region, and the ways climate change may affect these processes.Material and Methods. The concept is based on the multidisciplinary experience of the authors in researching the processes incorporated in the ViEW concept and on an in‐depth survey of the literature involved.Results. The outlines of the ViEW concept are presented in this study for review and comment by interested parties and stakeholders.Conclusion. Review of activities and opinions of specialists and organizations with remits relating to the development, establishment and maintenance of ViEW, indicates that such a system is a necessity for global animal and human health because of the role that the Caspian region plays in the mass migration of species of waterbird known as vectors for avian influenza and the already evident impacts of climate change on their phenologies. Waterbirds frequenting the Caspian Sea littorals and their habitats together constitute a major potential global hotspot or High Risk region for the generation and transmission of highly pathogenic avian influenza viruses and other dangerous zoonotic diseases.
{"title":"An early warning system for highly pathogenic viruses borne by waterbird species and related dynamics of climate change in the Caspian Sea region: Outlines of a concept","authors":"G. Petherbridge, A. Gadzhiev, А. М. Shestopalov, A. Alekseev, K. Sharshov, M. G. Daudova","doi":"10.18470/1992-1098-2022-2-233-263","DOIUrl":"https://doi.org/10.18470/1992-1098-2022-2-233-263","url":null,"abstract":"Aim. Formulation of the outlines of the concept of ViEW (Viral Early Warning) which is intended as a long term system of multidisciplinary transboundary cooperation between specialist institutions of all five Caspian region states to research, regularly monitor and share data about the generation, transmission and epidemiology of avian‐borne pathogens and their vectors in the region, and the ways climate change may affect these processes.Material and Methods. The concept is based on the multidisciplinary experience of the authors in researching the processes incorporated in the ViEW concept and on an in‐depth survey of the literature involved.Results. The outlines of the ViEW concept are presented in this study for review and comment by interested parties and stakeholders.Conclusion. Review of activities and opinions of specialists and organizations with remits relating to the development, establishment and maintenance of ViEW, indicates that such a system is a necessity for global animal and human health because of the role that the Caspian region plays in the mass migration of species of waterbird known as vectors for avian influenza and the already evident impacts of climate change on their phenologies. Waterbirds frequenting the Caspian Sea littorals and their habitats together constitute a major potential global hotspot or High Risk region for the generation and transmission of highly pathogenic avian influenza viruses and other dangerous zoonotic diseases.","PeriodicalId":41300,"journal":{"name":"South of Russia-Ecology Development","volume":"35 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78454424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-30DOI: 10.18470/1992-1098-2022-4-218-232
I. Stolbunov, S. N. Salienko, E. Zabotkina, E. I. Izvekov, E. Skuratovskaya, T. Sigacheva, M. Kirin, P. Podrezova
Aim. Experimental assessment of the impact of electric fields generated by the Electronic Programmable Complex Fish‐protecting Facility on the Electric Principle (EP EPRCFF) on the most common fish species of the Black Sea.Material and Methods. Experimental studies were conducted at the marine test site in the Quarantine Bay of the Black Sea (May‐September, 2021). The following were investigated on larvae, juvenile and adult fish of common species: behavioral responses to electrical fields, survival during and after exposure to the electric field of the fish barrier and the effects of electricity on the reproductive system and biochemical parameters of fish.Results. The features of behavior and distribution of larvae, juvenile and adult fish in the electric field of a fish barrier in modes of different intensity have been analysed. Survival estimation of fish during and after electric influence of the fish barrier has been carried out. The data on the influence of the electric screen on the reproductive system of fish and the biochemical characteristics of their internal organs were analysed.Conclusion. The larvae of fish exhibit a clear “first reaction” to the impact of the electric fish screen. However, there is no avoidance effect (i.e. escape of fish larvae from the area of the working electrode system). The juveniles actively move from the operation zone of the fish‐protective device, avoiding the influence of the electric field. The maximum distance from the electrode system EPRCFF was recorded in adult fish. Significant differences were not revealed in the direct assessment of the survival rate of control and experimental groups of individuals of different species of marine fish after exposure to the electric fish barrier. Some differences on the reproductive system of the fish species studied in the structure of gonads and reactivity of cells were noted under the influence of the electric barrier. The biochemical status of the internal organs under electrical action differed in various species of marine fish.
{"title":"Exploring the effect on marine fish of electric fields of a fish‐protection","authors":"I. Stolbunov, S. N. Salienko, E. Zabotkina, E. I. Izvekov, E. Skuratovskaya, T. Sigacheva, M. Kirin, P. Podrezova","doi":"10.18470/1992-1098-2022-4-218-232","DOIUrl":"https://doi.org/10.18470/1992-1098-2022-4-218-232","url":null,"abstract":"Aim. Experimental assessment of the impact of electric fields generated by the Electronic Programmable Complex Fish‐protecting Facility on the Electric Principle (EP EPRCFF) on the most common fish species of the Black Sea.Material and Methods. Experimental studies were conducted at the marine test site in the Quarantine Bay of the Black Sea (May‐September, 2021). The following were investigated on larvae, juvenile and adult fish of common species: behavioral responses to electrical fields, survival during and after exposure to the electric field of the fish barrier and the effects of electricity on the reproductive system and biochemical parameters of fish.Results. The features of behavior and distribution of larvae, juvenile and adult fish in the electric field of a fish barrier in modes of different intensity have been analysed. Survival estimation of fish during and after electric influence of the fish barrier has been carried out. The data on the influence of the electric screen on the reproductive system of fish and the biochemical characteristics of their internal organs were analysed.Conclusion. The larvae of fish exhibit a clear “first reaction” to the impact of the electric fish screen. However, there is no avoidance effect (i.e. escape of fish larvae from the area of the working electrode system). The juveniles actively move from the operation zone of the fish‐protective device, avoiding the influence of the electric field. The maximum distance from the electrode system EPRCFF was recorded in adult fish. Significant differences were not revealed in the direct assessment of the survival rate of control and experimental groups of individuals of different species of marine fish after exposure to the electric fish barrier. Some differences on the reproductive system of the fish species studied in the structure of gonads and reactivity of cells were noted under the influence of the electric barrier. The biochemical status of the internal organs under electrical action differed in various species of marine fish. ","PeriodicalId":41300,"journal":{"name":"South of Russia-Ecology Development","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85498595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-30DOI: 10.18470/1992-1098-2022-4-212-217
M. Magomedov, V. Rozhnov
Aim. When assessing the degree of transformation and openness of the territory for invasive species, a description of the current state of their biological diversity should be made taking into account the diversity index of adventitious species.Discussion. The problem of intensification of biological invasions has now become one of the world's most acute problems. Biological invasions of alien species have acquired such a scale that by now it is almost impossible to find terrestrial or aquatic ecosystems, wherever adventitious organisms are found. In practice, a number of categories and indices of diversity are used to assess biological diversity, and the methods of their measurement and analysis are also different. But all of them operate with almost two indicators – the number of species and their relative abundance – quantitative parameters, without taking into account modern qualitative changes in species in the composition of ecosystems.Results. It is proposed to introduce additional estimates of the share of adventitious species (the "adventiousness index") in the assessments of total biodiversity, which are necessary to solve a whole range of practical tasks. They give an idea of the state of ecosystems at the moment in a certain area, serve as the basis for the development of a management system for individual species, are necessary to assess the suitability of potential habitats for reintroduction and etc.
{"title":"Assessment of the current state of ecosystems taking into account the diversity of adventitious species","authors":"M. Magomedov, V. Rozhnov","doi":"10.18470/1992-1098-2022-4-212-217","DOIUrl":"https://doi.org/10.18470/1992-1098-2022-4-212-217","url":null,"abstract":"Aim. When assessing the degree of transformation and openness of the territory for invasive species, a description of the current state of their biological diversity should be made taking into account the diversity index of adventitious species.Discussion. The problem of intensification of biological invasions has now become one of the world's most acute problems. Biological invasions of alien species have acquired such a scale that by now it is almost impossible to find terrestrial or aquatic ecosystems, wherever adventitious organisms are found. In practice, a number of categories and indices of diversity are used to assess biological diversity, and the methods of their measurement and analysis are also different. But all of them operate with almost two indicators – the number of species and their relative abundance – quantitative parameters, without taking into account modern qualitative changes in species in the composition of ecosystems.Results. It is proposed to introduce additional estimates of the share of adventitious species (the \"adventiousness index\") in the assessments of total biodiversity, which are necessary to solve a whole range of practical tasks. They give an idea of the state of ecosystems at the moment in a certain area, serve as the basis for the development of a management system for individual species, are necessary to assess the suitability of potential habitats for reintroduction and etc.","PeriodicalId":41300,"journal":{"name":"South of Russia-Ecology Development","volume":"27 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79065468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-30DOI: 10.18470/1992-1098-2022-4-197-205
A. A. Chibilеv, P. V. Velmovskiy
Aim. The goal is to consider landscape aspects of nature management optimisation in the transboundary basin of the Ural River which have not been taken into account until the present time through measures being developed to improve the ecological state of the basin and its main river.Materials and Methods. The long‐term data of the hydrological regime of the rivers of the basin are analysed. The article summarizes the experience of optimizing water management relations in the river basin and the main results of the activities of the Inter‐Republican Committee on the Ural River basin (1977–1994).Results. Cycles of low‐water and high‐water years in the 20th–beginning of the 21st century are revealed. A list of priority landscape restoration measures has been developed and their ordination according to natural zones and types of localities has been carried out.Conclusions. It is confirmed that the highest and most effective form of territorial protection of landscape and biological diversity are natural reserves – special natural protected areas forming a landscape‐ecological framework. A number of ecological‐stabilising protected natural territories are proposed including the Ural‐Caspian Protected Fisheries Zone, which is aimed at partial restoration of the sturgeon population of the Ural‐Caspian basin adapted to the changed hydrological regime.
{"title":"Development of a matrix of landscape restoration measures in the basin of the transboundary Ural River","authors":"A. A. Chibilеv, P. V. Velmovskiy","doi":"10.18470/1992-1098-2022-4-197-205","DOIUrl":"https://doi.org/10.18470/1992-1098-2022-4-197-205","url":null,"abstract":"Aim. The goal is to consider landscape aspects of nature management optimisation in the transboundary basin of the Ural River which have not been taken into account until the present time through measures being developed to improve the ecological state of the basin and its main river.Materials and Methods. The long‐term data of the hydrological regime of the rivers of the basin are analysed. The article summarizes the experience of optimizing water management relations in the river basin and the main results of the activities of the Inter‐Republican Committee on the Ural River basin (1977–1994).Results. Cycles of low‐water and high‐water years in the 20th–beginning of the 21st century are revealed. A list of priority landscape restoration measures has been developed and their ordination according to natural zones and types of localities has been carried out.Conclusions. It is confirmed that the highest and most effective form of territorial protection of landscape and biological diversity are natural reserves – special natural protected areas forming a landscape‐ecological framework. A number of ecological‐stabilising protected natural territories are proposed including the Ural‐Caspian Protected Fisheries Zone, which is aimed at partial restoration of the sturgeon population of the Ural‐Caspian basin adapted to the changed hydrological regime.","PeriodicalId":41300,"journal":{"name":"South of Russia-Ecology Development","volume":"6 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74067766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-30DOI: 10.18470/1992-1098-2022-4-153-173
E. Mishvelov, Z. V. Ataev, A. I. Kornienko
Aim. In this work, the main aim was a retrospective analysis of the geo‐ecological state and problems of natural territorial complexes (NTC) of the valley of the plains area of the Kuma River in the context of hydrological and morphological dynamics for the period from the 18th century to the present.Material and Methods. The paper analyses the state of the landscape’s natural components in the region, for which topographic, sectoral and cadastral maps, digital relief model, satellite images were used. Openly available data of ministries, departments, archival and stock materials were used. The degree of anthropogenic transformation of the natural‐territorial complexes was calculated based on the coefficient of ecological stability of landscapes.Result. Using the example of the plains area of the Kuma River for the period of the 18th‐21st centuries, the geo‐ecological features of valley NTC were analysed. Studies have shown that at the present stage meandering remains an important condition for land use in the Kuma River valley in terms of both agricultural land and residential areas. Cartographic schemes of land use of a modelled plot in the valley of the Kuma River were constructed, allowing the assessment of the efficiency of the economic use of the fields of oxbow lakes.Conclusion. For the last two hundred years, valley NTC have remained significant for settlement purposes and related economic activities. The modern meandering belt together with the fields of the older such features create special environment forming conditions for the functioning of the stabilising components of the landscape, floodplain forest being a basic integral factor in the preservation of regional biodiversity. It is recommended that when organising the sustainable use of the land resources of river valleys for the purposes of territorial planning, the regional features of placement of meanders and oxbow lakes be taken into account.
{"title":"Hydrological and morphological features and geoecological condition of the territories of the plains area of the Kuma River valley and their significance in the system of civilizational development of the Central Pre‐Caucasus in the 18th–21st centuries","authors":"E. Mishvelov, Z. V. Ataev, A. I. Kornienko","doi":"10.18470/1992-1098-2022-4-153-173","DOIUrl":"https://doi.org/10.18470/1992-1098-2022-4-153-173","url":null,"abstract":"Aim. In this work, the main aim was a retrospective analysis of the geo‐ecological state and problems of natural territorial complexes (NTC) of the valley of the plains area of the Kuma River in the context of hydrological and morphological dynamics for the period from the 18th century to the present.Material and Methods. The paper analyses the state of the landscape’s natural components in the region, for which topographic, sectoral and cadastral maps, digital relief model, satellite images were used. Openly available data of ministries, departments, archival and stock materials were used. The degree of anthropogenic transformation of the natural‐territorial complexes was calculated based on the coefficient of ecological stability of landscapes.Result. Using the example of the plains area of the Kuma River for the period of the 18th‐21st centuries, the geo‐ecological features of valley NTC were analysed. Studies have shown that at the present stage meandering remains an important condition for land use in the Kuma River valley in terms of both agricultural land and residential areas. Cartographic schemes of land use of a modelled plot in the valley of the Kuma River were constructed, allowing the assessment of the efficiency of the economic use of the fields of oxbow lakes.Conclusion. For the last two hundred years, valley NTC have remained significant for settlement purposes and related economic activities. The modern meandering belt together with the fields of the older such features create special environment forming conditions for the functioning of the stabilising components of the landscape, floodplain forest being a basic integral factor in the preservation of regional biodiversity. It is recommended that when organising the sustainable use of the land resources of river valleys for the purposes of territorial planning, the regional features of placement of meanders and oxbow lakes be taken into account.","PeriodicalId":41300,"journal":{"name":"South of Russia-Ecology Development","volume":"4 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86914601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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