Pub Date : 2023-06-27DOI: 10.24057/2071-9388-2022-083
A. Georgiadi, I. Milyukova, O. O. Borodin, A. Gusarov
The Don River Long near Razdorskaya Village had long phases (lasting 33–86 years) of increased/decreased naturalized annual and seasonal water flow, and their properties for 1891–2019 were identified. Long-term changes in the annual and snow-melt flood flow occurred in the opposite phase relative to changes in the winter and summer-autumn flow. Annual hydrographs in the phase of decreased flow were characterized by an increase in water discharge during the low-water seasons of the year, but a noticeable decrease in daily flood water discharge and maximum water discharge. The share of high-water years (years with a flow exceedance probability equal to or less than 25%) in the phase of increased flow is significantly higher than the share of low-water years (years with a flow exceedance probability equal to or more than 75%). And on the contrary. At the same time the cumulative share of low- and high-water years remains relatively stable. The total changes in the annual and seasonal flow, caused by both anthropogenic and climatic factors, throughout the entire period of modern global warming (since 1989) consisted in a decrease of the annual and snow-melt flood flow and an increase of flow values during low-water seasons.
Razdorskaya村附近的Don River Long有很长的自然年和季节性流量增加/减少阶段（持续33–86年），并确定了1891–2019年的特性。年和融雪洪水流量的长期变化与冬季和夏季秋季流量的变化相反。流量减少阶段的年过程线的特征是，在一年中的枯水期，流量增加，但日洪水流量和最大流量明显减少。在流量增加阶段，高水位年份（流量超过概率等于或小于25%的年份）所占的份额明显高于低水位年份（超出概率等于或大于75%的年份）。恰恰相反。与此同时，枯水年和丰水年的累积份额保持相对稳定。在整个现代全球变暖时期（自1989年以来），由人为和气候因素引起的年流量和季节流量的总体变化包括年流量和融雪洪水流量的减少，以及枯水季节流量值的增加。
{"title":"Water Flow Changes In The Don River (European Russia) During 1891–2019","authors":"A. Georgiadi, I. Milyukova, O. O. Borodin, A. Gusarov","doi":"10.24057/2071-9388-2022-083","DOIUrl":"https://doi.org/10.24057/2071-9388-2022-083","url":null,"abstract":"The Don River Long near Razdorskaya Village had long phases (lasting 33–86 years) of increased/decreased naturalized annual and seasonal water flow, and their properties for 1891–2019 were identified. Long-term changes in the annual and snow-melt flood flow occurred in the opposite phase relative to changes in the winter and summer-autumn flow. Annual hydrographs in the phase of decreased flow were characterized by an increase in water discharge during the low-water seasons of the year, but a noticeable decrease in daily flood water discharge and maximum water discharge. The share of high-water years (years with a flow exceedance probability equal to or less than 25%) in the phase of increased flow is significantly higher than the share of low-water years (years with a flow exceedance probability equal to or more than 75%). And on the contrary. At the same time the cumulative share of low- and high-water years remains relatively stable. The total changes in the annual and seasonal flow, caused by both anthropogenic and climatic factors, throughout the entire period of modern global warming (since 1989) consisted in a decrease of the annual and snow-melt flood flow and an increase of flow values during low-water seasons.","PeriodicalId":37517,"journal":{"name":"Geography, Environment, Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46186372","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 : 2023-06-27DOI: 10.24057/2071-9388-2022-169
A. Markova, S. Sycheva, Tatiana M. Gorbacheva
The history of the early Middle Pleistocene small mammal faunas of Eastern Europe is very complicated. The early Middle Pleistocene which spanned from the Brunhes-Matuyama transition (772.9 ka BP, within MIS 19) till the beginning of the Likhvin Interglacial (424 ka BP, MIS 11) includes a number of interglacials and glaciations. Rodent species of the Tiraspolian faunal assemblage were found in the Chaudian fluvial deposits of the Cape Pekla section (northern coast of the Taman Peninsula). The evolutional level of the Pekla rodents are similar to those from the stratotype section of the Tiraspolian faunal assemblage in the Kolkotova Balka in Moldova (MIS 17) , which includes Eolagurus sp., Mimomys savini, Microtus (Terricola) arvalidens, Microtus (Alexandromys) ex gr. oeconomus and other species. The Pekla fauna also resembles the rodent fauna from famous English West Runton Freshwater Bed locality formed during the Cromerian Interglacial II and some other East and West European faunas. In the current work the entire loess-paleosol sequence of the Pekla section was described with five paleosols from the Middle to the Late Pleistocene. The sequence reflects the complexity of climatic fluctuations from the early Middle Pleistocene to the Holocene.
东欧中更新世早期小型哺乳动物区系的历史十分复杂。中更新世早期，从Brunhes-Matuyama过渡期（772.9 ka BP，MIS 19内）到Likhvin间冰川期（424 ka BP，MIS11）开始，包括许多间冰川和冰川作用。Tiraspolian动物群的啮齿动物物种发现于Pekla角段（塔曼半岛北部海岸）的Chaudian河流沉积物中。Pekla啮齿动物的进化水平与摩尔多瓦Kolkotova Balka Tiraspolian动物群的层型剖面（MIS 17）相似，包括Eolagurus sp.、Mimomys savini、Microtus（Terricola）arvalidens、Microtuss（Alexandromys）ex gr.oeconomus和其他物种。Pekla动物群也类似于著名的英国West Runton淡水床地区的啮齿动物动物群，这些啮齿动物动物群形成于Cromerian冰川间II和其他一些东欧和西欧动物群。在目前的工作中，用五种更新世中期至晚期的古土壤描述了Pekla剖面的整个黄土-古土壤序列。该序列反映了中更新世早期至全新世气候波动的复杂性。
{"title":"Early Middle Pleistocene Fauna Of Fossil Rodents And LoessPaleosol Series Of The Pekla Key Section (Taman Peninsula, Russia)","authors":"A. Markova, S. Sycheva, Tatiana M. Gorbacheva","doi":"10.24057/2071-9388-2022-169","DOIUrl":"https://doi.org/10.24057/2071-9388-2022-169","url":null,"abstract":"The history of the early Middle Pleistocene small mammal faunas of Eastern Europe is very complicated. The early Middle Pleistocene which spanned from the Brunhes-Matuyama transition (772.9 ka BP, within MIS 19) till the beginning of the Likhvin Interglacial (424 ka BP, MIS 11) includes a number of interglacials and glaciations. Rodent species of the Tiraspolian faunal assemblage were found in the Chaudian fluvial deposits of the Cape Pekla section (northern coast of the Taman Peninsula). The evolutional level of the Pekla rodents are similar to those from the stratotype section of the Tiraspolian faunal assemblage in the Kolkotova Balka in Moldova (MIS 17) , which includes Eolagurus sp., Mimomys savini, Microtus (Terricola) arvalidens, Microtus (Alexandromys) ex gr. oeconomus and other species. The Pekla fauna also resembles the rodent fauna from famous English West Runton Freshwater Bed locality formed during the Cromerian Interglacial II and some other East and West European faunas. In the current work the entire loess-paleosol sequence of the Pekla section was described with five paleosols from the Middle to the Late Pleistocene. The sequence reflects the complexity of climatic fluctuations from the early Middle Pleistocene to the Holocene.","PeriodicalId":37517,"journal":{"name":"Geography, Environment, Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49128305","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 : 2023-06-27DOI: 10.24057/2071-9388-2022-159
K. Waiyasusri, P. Wetchayont, Aekkacha Tananonchai, Dolreucha Suwanmajo
Due to Tropical Storm Dianmu’s influence in the Lam Khan Chu watershed (LKCW) area, central Thailand saw its worst flood in 50 years from September 23 to September 28, 2021. The flooding lasted for 1-2 months. The objective of this research is to study flood susceptibility using logistic regression analysis in LCKW area. According to the study 11 floods occurred repeatedly between 2005 and 2021, in the southern of Bamnetnarong district and continued northeast to Chaturat district and Bueng Lahan swamp. These areas are the main waterways of the LKCW area, the Lam Khan Chu stream and the Huai Khlong Phai Ngam, for which the dominant flow patterns are braided streams. The main factors influencing flooding are geology, stream frequency, topographic wetness index, drainage density, soil, stream power index, land-use, elevation, mean annual precipitation, aspect, distance to road, distance to village, and distance to stream. The results of the logistic regression analysis shed light on these factors. All such variables were demonstrated by the β value coefficient. The area’s susceptibility to flooding was projected on a map, and it was discovered to have extremely high and high levels of susceptibility, encompassing regions up to 148.308 km2 (8.566%) and 247.421 km2 (14.291%), respectively, in the vicinity of the two main river sides of the watershed. As a result of this research the flood susceptibility map will be used as a guideline for future flood planning and monitoring.
{"title":"Flood Susceptibility Mapping Using Logistic Regression Analysis In Lam Khan Chu Watershed, Chaiyaphum Province, Thailand","authors":"K. Waiyasusri, P. Wetchayont, Aekkacha Tananonchai, Dolreucha Suwanmajo","doi":"10.24057/2071-9388-2022-159","DOIUrl":"https://doi.org/10.24057/2071-9388-2022-159","url":null,"abstract":"Due to Tropical Storm Dianmu’s influence in the Lam Khan Chu watershed (LKCW) area, central Thailand saw its worst flood in 50 years from September 23 to September 28, 2021. The flooding lasted for 1-2 months. The objective of this research is to study flood susceptibility using logistic regression analysis in LCKW area. According to the study 11 floods occurred repeatedly between 2005 and 2021, in the southern of Bamnetnarong district and continued northeast to Chaturat district and Bueng Lahan swamp. These areas are the main waterways of the LKCW area, the Lam Khan Chu stream and the Huai Khlong Phai Ngam, for which the dominant flow patterns are braided streams. The main factors influencing flooding are geology, stream frequency, topographic wetness index, drainage density, soil, stream power index, land-use, elevation, mean annual precipitation, aspect, distance to road, distance to village, and distance to stream. The results of the logistic regression analysis shed light on these factors. All such variables were demonstrated by the β value coefficient. The area’s susceptibility to flooding was projected on a map, and it was discovered to have extremely high and high levels of susceptibility, encompassing regions up to 148.308 km2 (8.566%) and 247.421 km2 (14.291%), respectively, in the vicinity of the two main river sides of the watershed. As a result of this research the flood susceptibility map will be used as a guideline for future flood planning and monitoring.","PeriodicalId":37517,"journal":{"name":"Geography, Environment, Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43895635","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 : 2023-04-08DOI: 10.24057/2071-9388-2022-052
V. N. Chernykh, A. Ayurzhanaev, B. Sodnomov, E. Garmaev, B. Z. Tzydypov, A. Shikhov, M. A. Zharnikova, B. O. Gurzhapov, A. G. Suprunenko, A. Dashtseren
Distribution Of Icings In The Northern (Russian) Part Of The Selenga River Basin And Their Role In The Functioning Of Ecosystems And Impact On SettlementsIcing is an integral part of the landscape in areas with permafrost. It is formed in winter in river valleys, along stream beds, in places of groundwater discharge and, unlike other objects of the cryosphere, is characterized by active dynamics. The main objective of this study is to identify the role and significance of icings in the functioning of natural systems of Russian part of the Selenga River basin, as well as their impact on settlements.The first map of icings distribution was created based on Landsat imagery. In total, more than 15,500 icings were found. The highest concentration of icings is observed for forest landscapes. Icings in the forest-steppe belt are distinguished by their morphometric characteristics. They are often formed in giant areas of more than 1 km2. Steppe icings account for about 8 % of all objects of the study area. Icings play an important role in the functioning of forest and, in particular, foreststeppe ecosystems, as they largely determine the redistribution of water flow in small watersheds.During the period of increasing total water content, icings become a factor contributing to emergency situations. The potential risk of inundation has been established for 65 settlements in the Russian part of the Selenga River basin.
{"title":"Distribution Of Icings In The Northern (Russian) Part Of The Selenga River Basin And Their Role In The Functioning Of Ecosystems And Impact On Settlements","authors":"V. N. Chernykh, A. Ayurzhanaev, B. Sodnomov, E. Garmaev, B. Z. Tzydypov, A. Shikhov, M. A. Zharnikova, B. O. Gurzhapov, A. G. Suprunenko, A. Dashtseren","doi":"10.24057/2071-9388-2022-052","DOIUrl":"https://doi.org/10.24057/2071-9388-2022-052","url":null,"abstract":"Distribution Of Icings In The Northern (Russian) Part Of The Selenga River Basin And Their Role In The Functioning Of Ecosystems And Impact On SettlementsIcing is an integral part of the landscape in areas with permafrost. It is formed in winter in river valleys, along stream beds, in places of groundwater discharge and, unlike other objects of the cryosphere, is characterized by active dynamics. The main objective of this study is to identify the role and significance of icings in the functioning of natural systems of Russian part of the Selenga River basin, as well as their impact on settlements.The first map of icings distribution was created based on Landsat imagery. In total, more than 15,500 icings were found. The highest concentration of icings is observed for forest landscapes. Icings in the forest-steppe belt are distinguished by their morphometric characteristics. They are often formed in giant areas of more than 1 km2. Steppe icings account for about 8 % of all objects of the study area. Icings play an important role in the functioning of forest and, in particular, foreststeppe ecosystems, as they largely determine the redistribution of water flow in small watersheds.During the period of increasing total water content, icings become a factor contributing to emergency situations. The potential risk of inundation has been established for 65 settlements in the Russian part of the Selenga River basin.","PeriodicalId":37517,"journal":{"name":"Geography, Environment, Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42220706","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 : 2023-04-07DOI: 10.24057/2071-9388-2022-124
H. Kurniawan, M. S. Roychansyah
Public Green Open Space (PGOS) is widely known to provide many benefits for the well-being of urban community, especially the socially vulnerable. Achieving equitable PGOS access is crucial for the sustainability and livability of cities. This study aims to 1) observe the accessibility of PGOS and 2) investigate the social equity of PGOS access in South Tangerang, Indonesia. This study employed network-based accessibility analysis through GIS and constructed a green space access index at urban village level to observe the accessibility of PGOS for urban residents. Furthermore, statistical correlation tests were conducted to examine the social equity of PGOS access against socio-demographic variables. The spatiality of equity was explored by using Bivariate Moran’s I. The results found that in South Tangerang, PGOS access is unequal, showing 61.2% of residential areas being underserved. This study also found that PGOS access is higher in elite private neighborhoods. Furthermore, statistical tests showed that PGOS access is inequitable for the low-income group. As for the elderly and population density, PGOS access was found to be equitable. However, no correlation was found between children and PGOS access. Additionally, causes of inequality and inequity in PGOS access and its implications are further discussed. This study addresses several key policy implications for urban planners and specifically for the government of South Tangerang such as the need to reform PGOS planning & policy and developing alternative funding for PGOS.
{"title":"The Social Equity Of Public Green Open Space Accessibility: The Case Of South Tangerang, Indonesia","authors":"H. Kurniawan, M. S. Roychansyah","doi":"10.24057/2071-9388-2022-124","DOIUrl":"https://doi.org/10.24057/2071-9388-2022-124","url":null,"abstract":"Public Green Open Space (PGOS) is widely known to provide many benefits for the well-being of urban community, especially the socially vulnerable. Achieving equitable PGOS access is crucial for the sustainability and livability of cities. This study aims to 1) observe the accessibility of PGOS and 2) investigate the social equity of PGOS access in South Tangerang, Indonesia. This study employed network-based accessibility analysis through GIS and constructed a green space access index at urban village level to observe the accessibility of PGOS for urban residents. Furthermore, statistical correlation tests were conducted to examine the social equity of PGOS access against socio-demographic variables. The spatiality of equity was explored by using Bivariate Moran’s I. The results found that in South Tangerang, PGOS access is unequal, showing 61.2% of residential areas being underserved. This study also found that PGOS access is higher in elite private neighborhoods. Furthermore, statistical tests showed that PGOS access is inequitable for the low-income group. As for the elderly and population density, PGOS access was found to be equitable. However, no correlation was found between children and PGOS access. Additionally, causes of inequality and inequity in PGOS access and its implications are further discussed. This study addresses several key policy implications for urban planners and specifically for the government of South Tangerang such as the need to reform PGOS planning & policy and developing alternative funding for PGOS.","PeriodicalId":37517,"journal":{"name":"Geography, Environment, Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45814466","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 : 2023-04-07DOI: 10.24057/2071-9388-2022-127
T. Samsonov, O. Yakimova, D. A. Potemkin, O. A. Guseva
Digital topographic maps are created in a series of scales from large to small, and the underlying spatial data is commonly organized as a multiscale database consisting of several levels of detail (LoDs). Spatial density of features (or spatial objects) in such database varies both between LoDs (coarser levels are less densely populated with features) and within each LoD (feature density changes over the area). While the former type of density variation is caused by generalization, the latter one is mainly conditioned by geographic location and its properties, such as landscape complexity or fraction of urban areas. Since topographic database LoDs are derived using different data sources and generalization techniques, there is a need for a method that can help with automated evaluation of resulting feature density in terms of its appropriateness for the specified location and level of detail. This paper provides such method by uncovering dependencies between the location properties and the density of spatial data in multiscale topographic database. Changes in feature density are modeled as a function of spatial (landscape complexity and terrain ruggedness) and non-spatial (land cover types ratio) measures estimated via independent data sources. Resulting model predicts how much higher or lower is the expected spatial density of features over the area in comparison to the average density for the LoD. This information can be used further to assess the fitness of the data to the desired level of detail of the topographic map.
{"title":"Spatial variation of feature density in multiscale topographic data","authors":"T. Samsonov, O. Yakimova, D. A. Potemkin, O. A. Guseva","doi":"10.24057/2071-9388-2022-127","DOIUrl":"https://doi.org/10.24057/2071-9388-2022-127","url":null,"abstract":"Digital topographic maps are created in a series of scales from large to small, and the underlying spatial data is commonly organized as a multiscale database consisting of several levels of detail (LoDs). Spatial density of features (or spatial objects) in such database varies both between LoDs (coarser levels are less densely populated with features) and within each LoD (feature density changes over the area). While the former type of density variation is caused by generalization, the latter one is mainly conditioned by geographic location and its properties, such as landscape complexity or fraction of urban areas. Since topographic database LoDs are derived using different data sources and generalization techniques, there is a need for a method that can help with automated evaluation of resulting feature density in terms of its appropriateness for the specified location and level of detail. This paper provides such method by uncovering dependencies between the location properties and the density of spatial data in multiscale topographic database. Changes in feature density are modeled as a function of spatial (landscape complexity and terrain ruggedness) and non-spatial (land cover types ratio) measures estimated via independent data sources. Resulting model predicts how much higher or lower is the expected spatial density of features over the area in comparison to the average density for the LoD. This information can be used further to assess the fitness of the data to the desired level of detail of the topographic map.","PeriodicalId":37517,"journal":{"name":"Geography, Environment, Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42559232","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 : 2023-04-07DOI: 10.24057/2071-9388-2022-091
R. Kashkarov, A. Ten, Yuliya Mitropolskaya, V. Soldatov
Previously, there was no special study of the Great Bustard (Otis tarda) in Uzbekistan. The first Bustard survey was conducted within the Winter Bustards Census Programme of the Eurasian Bustard Alliance in 2019. The discovery of a Great Bustards aggregation of 96 individuals in Jizzakh region showed that the wintering grounds are more stable than was expected before and that there is no information about the wintering grounds of this species in the country. The aim of this work was to find other wintering grounds, estimate the number of wintering Great Bustards and assess threats. The identification of potential wintering grounds was carried out using satellite images in Q-GIS 3.0 based on published records of the Great Bustard in the winter season. The field survey of the Great Bustard was carried out using two methods. The first one was based on car transects, which is suitable for natural habitats. The second method that we used on open rain-fed fields, was point count from higher locations. Both methods give the actual number of birds, and could not be used for extrapolation as this species’ distribution is fragmented. In 2020-2021 we covered a considerable part of the foothill plains of the central part of Uzbekistan. As a result, two wintering grounds were identified in which about 500 Great Bustards were concentrated. The surveys also made it possible to identify the main threats, which are poaching and collision with power lines. The results highlighted wintering grounds which required conservation.
{"title":"Changes In The Modern Range Of The Great Bustard Otis Tarda In Uzbekistan Under The Influence Of Agricultural Transformation Of Landscapes And Climate","authors":"R. Kashkarov, A. Ten, Yuliya Mitropolskaya, V. Soldatov","doi":"10.24057/2071-9388-2022-091","DOIUrl":"https://doi.org/10.24057/2071-9388-2022-091","url":null,"abstract":"Previously, there was no special study of the Great Bustard (Otis tarda) in Uzbekistan. The first Bustard survey was conducted within the Winter Bustards Census Programme of the Eurasian Bustard Alliance in 2019. The discovery of a Great Bustards aggregation of 96 individuals in Jizzakh region showed that the wintering grounds are more stable than was expected before and that there is no information about the wintering grounds of this species in the country. The aim of this work was to find other wintering grounds, estimate the number of wintering Great Bustards and assess threats. The identification of potential wintering grounds was carried out using satellite images in Q-GIS 3.0 based on published records of the Great Bustard in the winter season. The field survey of the Great Bustard was carried out using two methods. The first one was based on car transects, which is suitable for natural habitats. The second method that we used on open rain-fed fields, was point count from higher locations. Both methods give the actual number of birds, and could not be used for extrapolation as this species’ distribution is fragmented. In 2020-2021 we covered a considerable part of the foothill plains of the central part of Uzbekistan. As a result, two wintering grounds were identified in which about 500 Great Bustards were concentrated. The surveys also made it possible to identify the main threats, which are poaching and collision with power lines. The results highlighted wintering grounds which required conservation.","PeriodicalId":37517,"journal":{"name":"Geography, Environment, Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47104958","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 : 2023-04-07DOI: 10.24057/2071-9388-2022-093
S. Mazina, E. V. Kozlova, A. S. Fedorov, S. Abdullin
This article presents results of a study of bryophytes in seven caves of the Kutuk tract of the National Park «Bashkiria» of the Republic of Bashkortostan, including the largest cave in Bashkiria – Kutuk-Sumgan.Fifty-five bryophytes species were found in the studied caves. The dominant species in all caves was Timmia bavarica. The species composition of bryophytes of each cave is unique. Among identified bryophytes species 23, species were found only in one cave, and 11 species in 2 caves. During our survey, we found 31 species in Kutuk-Sumgan Cave, 21 species in Kutuk-2 and Kutuk-3 caves, 19 species in Kutuk-4 caves, 18 species in Vintovaya and Zigzag caves and 14 species in Kutuk-1 cave. Using the Jaccard and Phi-squared similarity indices, we revealed the stability of the bryoflora of the caves in different years and show its changes. Changes in the composition and structure of mosses in the Kutuk tract may be caused by mechanical influences. Benchmark similarity analysis allowed us to determine the influence of entrance morphology and glaciation in the photic zone of the caves on the composition of bryophytes.Using the Kutuk tract caves as an example, it is shown that in the primary analysis of the bryoflora, when selecting a characteristic cave, up to 40% of the total species composition of the caves can be identified in a single cave. The current study of Kutuk tract caves shows that identification of the primere analyses of bioflora permits identification of up to 40% of species composition of an individual cave.Three criteria for selecting a characteristic cave were identified: size of the photic zone and morphology of the entrance, diversity of habitats, and the least degree of disturbance.
{"title":"Biodiversity Of Bryophyte Of Photic Zones Of Caves In The Kutuk Tract (Southern Ural, Bashkiria)","authors":"S. Mazina, E. V. Kozlova, A. S. Fedorov, S. Abdullin","doi":"10.24057/2071-9388-2022-093","DOIUrl":"https://doi.org/10.24057/2071-9388-2022-093","url":null,"abstract":"This article presents results of a study of bryophytes in seven caves of the Kutuk tract of the National Park «Bashkiria» of the Republic of Bashkortostan, including the largest cave in Bashkiria – Kutuk-Sumgan.Fifty-five bryophytes species were found in the studied caves. The dominant species in all caves was Timmia bavarica. The species composition of bryophytes of each cave is unique. Among identified bryophytes species 23, species were found only in one cave, and 11 species in 2 caves. During our survey, we found 31 species in Kutuk-Sumgan Cave, 21 species in Kutuk-2 and Kutuk-3 caves, 19 species in Kutuk-4 caves, 18 species in Vintovaya and Zigzag caves and 14 species in Kutuk-1 cave. Using the Jaccard and Phi-squared similarity indices, we revealed the stability of the bryoflora of the caves in different years and show its changes. Changes in the composition and structure of mosses in the Kutuk tract may be caused by mechanical influences. Benchmark similarity analysis allowed us to determine the influence of entrance morphology and glaciation in the photic zone of the caves on the composition of bryophytes.Using the Kutuk tract caves as an example, it is shown that in the primary analysis of the bryoflora, when selecting a characteristic cave, up to 40% of the total species composition of the caves can be identified in a single cave. The current study of Kutuk tract caves shows that identification of the primere analyses of bioflora permits identification of up to 40% of species composition of an individual cave.Three criteria for selecting a characteristic cave were identified: size of the photic zone and morphology of the entrance, diversity of habitats, and the least degree of disturbance.","PeriodicalId":37517,"journal":{"name":"Geography, Environment, Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42685144","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 : 2023-04-07DOI: 10.24057/2071-9388-2022-050
A. Nikulina, N. Ryabova, Y. Lu, A. A. Zimin
Bacteria of the genus Streptomyces, one of the main microorganisms of soils, and their bacteriophages are important inhabitants of soil ecosystems. Important though they are, not much is known about their functional patterns and population dynamics. A question of particular interest, which is still to be understood, is how bacteriophages regulate the population dynamics of Streptomyces and how this regulation affects the soil ecosystem as a whole. Isolation and study of new Streptomyces bacteriophages can help to understand these problems. In this paper, we describe isolation of a new bacteriophage from the soils of the Prioksko- Terrasny Reserve. The analysis of morphology of the new phage allows us to conclude that it belongs to the family Siphoviridae.
{"title":"A New Bacteriophage Of The Family Siphoviridae Isolated From The Soddy-Podzolic Soils Of The Prioksko-Terrasny Nature Reserve","authors":"A. Nikulina, N. Ryabova, Y. Lu, A. A. Zimin","doi":"10.24057/2071-9388-2022-050","DOIUrl":"https://doi.org/10.24057/2071-9388-2022-050","url":null,"abstract":"Bacteria of the genus Streptomyces, one of the main microorganisms of soils, and their bacteriophages are important inhabitants of soil ecosystems. Important though they are, not much is known about their functional patterns and population dynamics. A question of particular interest, which is still to be understood, is how bacteriophages regulate the population dynamics of Streptomyces and how this regulation affects the soil ecosystem as a whole. Isolation and study of new Streptomyces bacteriophages can help to understand these problems. In this paper, we describe isolation of a new bacteriophage from the soils of the Prioksko- Terrasny Reserve. The analysis of morphology of the new phage allows us to conclude that it belongs to the family Siphoviridae.","PeriodicalId":37517,"journal":{"name":"Geography, Environment, Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44868170","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 : 2023-04-07DOI: 10.24057/2071-9388-2022-056
Brenda B. Buenano, Nadezhda V. Zueva
The article evaluates the ecological status of five small lakes on Valaam Island (Igumenskoe, Chernoe, Ossievo, Nikonovskoe, Krestovoe) using macrophytes as bioindicators. The methods proposed by Finland, Sweden, and Norway were used, to assess the state of eutrophication, the change in the composition of specific species, the change in the water level, and the state of acidification, according to different indexes (Reference index (RI), Trophic Macrophyte Index (TMI), Trophic Index (TIc), the Proportion of Type– Specific Taxa (PTST), the Percent Model Affinity (PMA), Water level Index (WIc), and Acidification Index (SIc)). An analysis of the floristic composition for the period 2011 – 2020 was realized, including taxonomic analysis, ecogroup, and macrophyte diversity. The dominant taxon was Elodea canadensis Michx. in Igumenskoe, Chernoe, Ossievo lakes and Calla palustris L. in Nikonovskoe and Krestovoe lakes. The ecogroup hygrohelophyte was the most diverse in all lakes studied. The ecological status of the lakes according to each assessed parameter reflects that all lakes are characterized by a mesotrophic to eutrophic state, there is a variation in species composition of macrophyte and no water level change or acidification processes are presumed to occur in any of the lakes. In general, each method has its limitations, but it is suggested to continue studies for the RI, TMI, PTST, and PMA indices, and to integrate them with other national physicochemical or biological indices.
{"title":"Macrophytes As Indicators Of The Ecological Status Of Valaam Island Small Lakes System","authors":"Brenda B. Buenano, Nadezhda V. Zueva","doi":"10.24057/2071-9388-2022-056","DOIUrl":"https://doi.org/10.24057/2071-9388-2022-056","url":null,"abstract":"The article evaluates the ecological status of five small lakes on Valaam Island (Igumenskoe, Chernoe, Ossievo, Nikonovskoe, Krestovoe) using macrophytes as bioindicators. The methods proposed by Finland, Sweden, and Norway were used, to assess the state of eutrophication, the change in the composition of specific species, the change in the water level, and the state of acidification, according to different indexes (Reference index (RI), Trophic Macrophyte Index (TMI), Trophic Index (TIc), the Proportion of Type– Specific Taxa (PTST), the Percent Model Affinity (PMA), Water level Index (WIc), and Acidification Index (SIc)). An analysis of the floristic composition for the period 2011 – 2020 was realized, including taxonomic analysis, ecogroup, and macrophyte diversity. The dominant taxon was Elodea canadensis Michx. in Igumenskoe, Chernoe, Ossievo lakes and Calla palustris L. in Nikonovskoe and Krestovoe lakes. The ecogroup hygrohelophyte was the most diverse in all lakes studied. The ecological status of the lakes according to each assessed parameter reflects that all lakes are characterized by a mesotrophic to eutrophic state, there is a variation in species composition of macrophyte and no water level change or acidification processes are presumed to occur in any of the lakes. In general, each method has its limitations, but it is suggested to continue studies for the RI, TMI, PTST, and PMA indices, and to integrate them with other national physicochemical or biological indices.","PeriodicalId":37517,"journal":{"name":"Geography, Environment, Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43163614","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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