Pub Date : 1900-01-01DOI: 10.21685/2500-0578-2022-1-5
T. Braslavskaya, A. Geraskina, A. Aleinikov, N. Belyaeva, N. Ukhova, V. Korotkov, D. Shilov, D. L. Lugovaya, O. Smirnova
. One of the essential tasks of sustainable forest management is to maintain native biodiversity. Primary forest research is one of the ways to understand what this biodiversity is. Matherials and methods . The primary, as confirmed by their land-use history and structural peculiarities, mesic dark-conifer forests remain in Visim and Pechora–Ilych nature biosphere reserves (boreal and sub-boreal zones respectively, the Ural Mountains, Russian Federation). We compared the primary forests and post fire 100-year small-leaved deciduous forests by diversity of vascular flora and soil invertebrate macrofauna. Results and discussion. The diversity of some functional groups of species (low boreal herbs, earthworms) in post fire forests is lower than in primary forests, the research shows. These species largely depend on deadwood and other tree-related microhabitats common in the primary forests but not so in the 100-year post fire forests. Repeated fires at intervals of several decades, as is the case with the use of prescribed fires in forest management, will be expected to reduce the biodiversity quality of these specialist species. Additionally, we revealed that post fire forest flora is more synanthropic in the woodland of a small area (Visim reserve) than in the intact forest landscape (Pechora–Ilych reserve). It demonstrates that, within extensive woodlands, native forests are more resilient to sporadic stand-replacing disturbances than small woodlands. Conclusion . Strict conservation of intact forest landscapes is necessary as they serve as large buffer areas around the remaining primary forests to maintain native biodiversity.
{"title":"LONG-TERM EFFECT OF WILDFIRES ON VASCULAR PLANT AND SOIL INVERTEBRATE DIVERSITY IN PRIMARY FIR-SPRUCE FORESTS OF THE URAL MOUNTAINS (NORTH EURASIA)","authors":"T. Braslavskaya, A. Geraskina, A. Aleinikov, N. Belyaeva, N. Ukhova, V. Korotkov, D. Shilov, D. L. Lugovaya, O. Smirnova","doi":"10.21685/2500-0578-2022-1-5","DOIUrl":"https://doi.org/10.21685/2500-0578-2022-1-5","url":null,"abstract":". One of the essential tasks of sustainable forest management is to maintain native biodiversity. Primary forest research is one of the ways to understand what this biodiversity is. Matherials and methods . The primary, as confirmed by their land-use history and structural peculiarities, mesic dark-conifer forests remain in Visim and Pechora–Ilych nature biosphere reserves (boreal and sub-boreal zones respectively, the Ural Mountains, Russian Federation). We compared the primary forests and post fire 100-year small-leaved deciduous forests by diversity of vascular flora and soil invertebrate macrofauna. Results and discussion. The diversity of some functional groups of species (low boreal herbs, earthworms) in post fire forests is lower than in primary forests, the research shows. These species largely depend on deadwood and other tree-related microhabitats common in the primary forests but not so in the 100-year post fire forests. Repeated fires at intervals of several decades, as is the case with the use of prescribed fires in forest management, will be expected to reduce the biodiversity quality of these specialist species. Additionally, we revealed that post fire forest flora is more synanthropic in the woodland of a small area (Visim reserve) than in the intact forest landscape (Pechora–Ilych reserve). It demonstrates that, within extensive woodlands, native forests are more resilient to sporadic stand-replacing disturbances than small woodlands. Conclusion . Strict conservation of intact forest landscapes is necessary as they serve as large buffer areas around the remaining primary forests to maintain native biodiversity.","PeriodicalId":309848,"journal":{"name":"Russian Journal of Ecosystem Ecology","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116524377","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 : 1900-01-01DOI: 10.21685/2500-0578-2021-2-2
O. Evstigneev, A. Gornov
{"title":"RESERVE MEADOW: RESULTS OF 30 YEARS OF MONITORING","authors":"O. Evstigneev, A. Gornov","doi":"10.21685/2500-0578-2021-2-2","DOIUrl":"https://doi.org/10.21685/2500-0578-2021-2-2","url":null,"abstract":"","PeriodicalId":309848,"journal":{"name":"Russian Journal of Ecosystem Ecology","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132212650","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 : 1900-01-01DOI: 10.21685/2500-0578-2019-3-4
S. S. Ryazanov, D. V. Ivanov, V. Kulagina
Background. The study is conducted to investigate the content and spatial distribution of Fe and eight heavy metals (Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn) in soils of the industrially developed region. Materials and methods. A total of 1,170 soil samples of different land use (natural, agricultural, urban) were collected from topsoils in the territory of the Republic of Tatarstan, Russia. Heavy metals concentrations in soil samples were determined using atomic absorption spectrometry after 5M HNO3 extraction. Multivariate and geostatistical analyses were used to investigate the current state of soil heavy metal contamination and to identify spatial patterns and possible sources of heavy metals on the regional scale. Results. Zonal soil types of a natural land use were used to assess the regional background values of the heavy metals: Cd – 0.44±0.24 mg/kg, Co – 10.4±3.6 mg/kg, Cr – 23.3±12.7 mg/kg, Cu – 16.4±7.8 mg/kg, Fe – 15275.4±5178.3 mg/kg, Mn – 652.4±228.4 mg/kg, Ni – 29.8±18.8 mg/kg, Pb – 11.5±3.2 mg/kg, Zn – 43.3±12.8 mg/kg. The results of the pollution evaluation showed the absence of regionalscale contamination directly related to agriculture. Urban soils were contaminated by Cu, Pb and Zn. Geostatistical analysis revealed several patterns of regional distribution of heavy metals and suggested an anthropogenic impact to the Cu, Pb and Zn distribution. Principal component analysis allowed distinguishing three regional geochemical groups of heavy metals and showed that at the regional scale the distribution of Cu, Mn and Ni is controlled by the element richness in soil parent material, overlayed by the soil forming factors; the distribution of the Co, Cr and Fe is controlled mainly by lithology; and the distribution of the Pb, Zn and Cd is strongly influenced by the anthropogenic sources. Conclusion. This case study demonstrates that a combination of multivariate statistics and geostatistical analysis together with the pollution assessment allows comprehensive characterizing heavy metals spatial distribution and determining their sources.
{"title":"HEAVY METALS IN TOPSOILS OF THE REPUBLIC OF TATARSTAN, RUSSIA: MULTIVARIATE ANALYSIS AND POLLUTION EVALUATION","authors":"S. S. Ryazanov, D. V. Ivanov, V. Kulagina","doi":"10.21685/2500-0578-2019-3-4","DOIUrl":"https://doi.org/10.21685/2500-0578-2019-3-4","url":null,"abstract":"Background. The study is conducted to investigate the content and spatial distribution of Fe and eight heavy metals (Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn) in soils of the industrially developed region. Materials and methods. A total of 1,170 soil samples of different land use (natural, agricultural, urban) were collected from topsoils in the territory of the Republic of Tatarstan, Russia. Heavy metals concentrations in soil samples were determined using atomic absorption spectrometry after 5M HNO3 extraction. Multivariate and geostatistical analyses were used to investigate the current state of soil heavy metal contamination and to identify spatial patterns and possible sources of heavy metals on the regional scale. Results. Zonal soil types of a natural land use were used to assess the regional background values of the heavy metals: Cd – 0.44±0.24 mg/kg, Co – 10.4±3.6 mg/kg, Cr – 23.3±12.7 mg/kg, Cu – 16.4±7.8 mg/kg, Fe – 15275.4±5178.3 mg/kg, Mn – 652.4±228.4 mg/kg, Ni – 29.8±18.8 mg/kg, Pb – 11.5±3.2 mg/kg, Zn – 43.3±12.8 mg/kg. The results of the pollution evaluation showed the absence of regionalscale contamination directly related to agriculture. Urban soils were contaminated by Cu, Pb and Zn. Geostatistical analysis revealed several patterns of regional distribution of heavy metals and suggested an anthropogenic impact to the Cu, Pb and Zn distribution. Principal component analysis allowed distinguishing three regional geochemical groups of heavy metals and showed that at the regional scale the distribution of Cu, Mn and Ni is controlled by the element richness in soil parent material, overlayed by the soil forming factors; the distribution of the Co, Cr and Fe is controlled mainly by lithology; and the distribution of the Pb, Zn and Cd is strongly influenced by the anthropogenic sources. Conclusion. This case study demonstrates that a combination of multivariate statistics and geostatistical analysis together with the pollution assessment allows comprehensive characterizing heavy metals spatial distribution and determining their sources.","PeriodicalId":309848,"journal":{"name":"Russian Journal of Ecosystem Ecology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133127494","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 : 1900-01-01DOI: 10.21685/2500-0578-2023-2-2
E. N. Kondratev, A. Sazhnev, V. Anikin, A. A. Mironova
{"title":"USING THE HETEROCENTRIC MODEL IN POPULATION-CONSORTIUM ANALYSIS OF THE NEST-DWELLING ARTHROPODS OF THE SAND MARTIN (RIPARIA RIPARIA (LINNAEUS, 1758)) IN SARATOV REGION","authors":"E. N. Kondratev, A. Sazhnev, V. Anikin, A. A. Mironova","doi":"10.21685/2500-0578-2023-2-2","DOIUrl":"https://doi.org/10.21685/2500-0578-2023-2-2","url":null,"abstract":"","PeriodicalId":309848,"journal":{"name":"Russian Journal of Ecosystem Ecology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123343126","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 : 1900-01-01DOI: 10.21685/2500-0578-2021-2-5
V. Emelyanov, А. Savchenko, V. L. Тemerova, К. A. Мikhaylova
{"title":"ASSESSMENT OF THE CURRENT STATE OF CRANES IN THE NORTH OF THE MINUSINSK BASIN","authors":"V. Emelyanov, А. Savchenko, V. L. Тemerova, К. A. Мikhaylova","doi":"10.21685/2500-0578-2021-2-5","DOIUrl":"https://doi.org/10.21685/2500-0578-2021-2-5","url":null,"abstract":"","PeriodicalId":309848,"journal":{"name":"Russian Journal of Ecosystem Ecology","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121205482","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 : 1900-01-01DOI: 10.21685/2500-0578-2022-2-1
Z. Novitskiy, A. Khamzaev, N. Bakirov, G. Atadjanova
{"title":"CREATION OF PERMANENT FOREST-SEED PLOTS OF SAXAUL (HALOXYLON APHYLLUM (MINKW.)) ON THE DRAINED BOTTOM OF THE ARAL SEA","authors":"Z. Novitskiy, A. Khamzaev, N. Bakirov, G. Atadjanova","doi":"10.21685/2500-0578-2022-2-1","DOIUrl":"https://doi.org/10.21685/2500-0578-2022-2-1","url":null,"abstract":"","PeriodicalId":309848,"journal":{"name":"Russian Journal of Ecosystem Ecology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127192331","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 : 1900-01-01DOI: 10.21685/2500-0578-2019-4-5
D. Smirnov, V. Vekhnik, G. Dzhamirzoev, Y. Bykov
Background. The territorial study of the bat population of Dagestan remains insufficient. There are practically no data from remote and hard-to-reach mountain areas, and data on the flat part are modest. There are species, which findings are known only from the first half of the last century. The distribution features are unknown for many species. There is no accurate information about migrations of migratory species and the nature of their seasonal location. The aim of the work is to provide new information about bats of the flat part of Dagestan and adjacent foothill territories, as well as to give a brief analysis of the peculiarities of their distribution. Materials and methods. The studies were carried out from 14 to 28 of May and from 31 August to 12 September 2019. Bats were caught with spider nets at night and in the daytime they were searched in shelters. For remote detection of flying animals, ultrasonic detectors D-240 x and BATTLOGGER M were used. The initial signal processing was carried out in Betexplorer 2.1, and the final analysis-BatSound 3.31. Results. During the work 23 points were examined and 215 individuals of 19 species were found, 2 more species (Pl. auritus and N. lasiopterus) were registered only using echolocation signals. Conclusion. It was found that many species have a wider distribution than previously known (R. hipposideros, R. ferrumequinum, M. bechsteinii, M. mystacinus, M. davidii, N. leisleri). The habitat of M. blythii covers various landscapes from the lower reaches of the Terek river to the southern borders of the Republic. N. lasiopterus, N. leisleri, P. pygmaeus, H. savii, B. barbastellus and B. caspica habitat in the region is confirmed. A sporadic distribution has been noted for M. daubentoni. P. pipistrellus, P. kuhlii, P. nathusii, N. noctula and E. serotinus should be considered the most common in the flat part, and in some areas are massive. For pairs of cryptic species (M. mystacinus and M. davidii, P. pipistrellus and P. pygmaeus) places of their joint habitat are established. The species status of M. nattereri s.l. living in the Sarykum region has been revised. Based on the results of genetic analysis specimens from this part of the region should be classified as M. cf. tschuliensis. Data on migratory species show that the flat part of the territory serves as a place of mass summer stay of males of N. noctula and P. nathusii. At the same time, the findings of pregnant females prove that part of their populations in the Dagestan is settled and uses the floodplain forests of the plain as a place for reproduction.
{"title":"NEW DATA ON THE DISTRIBUTION OF BATS (CHIROPTERA) IN THE FLAT PART OF THE REPUBLIC OF DAGESTAN","authors":"D. Smirnov, V. Vekhnik, G. Dzhamirzoev, Y. Bykov","doi":"10.21685/2500-0578-2019-4-5","DOIUrl":"https://doi.org/10.21685/2500-0578-2019-4-5","url":null,"abstract":"Background. The territorial study of the bat population of Dagestan remains insufficient. There are practically no data from remote and hard-to-reach mountain areas, and data on the flat part are modest. There are species, which findings are known only from the first half of the last century. The distribution features are unknown for many species. There is no accurate information about migrations of migratory species and the nature of their seasonal location. The aim of the work is to provide new information about bats of the flat part of Dagestan and adjacent foothill territories, as well as to give a brief analysis of the peculiarities of their distribution. Materials and methods. The studies were carried out from 14 to 28 of May and from 31 August to 12 September 2019. Bats were caught with spider nets at night and in the daytime they were searched in shelters. For remote detection of flying animals, ultrasonic detectors D-240 x and BATTLOGGER M were used. The initial signal processing was carried out in Betexplorer 2.1, and the final analysis-BatSound 3.31. Results. During the work 23 points were examined and 215 individuals of 19 species were found, 2 more species (Pl. auritus and N. lasiopterus) were registered only using echolocation signals. Conclusion. It was found that many species have a wider distribution than previously known (R. hipposideros, R. ferrumequinum, M. bechsteinii, M. mystacinus, M. davidii, N. leisleri). The habitat of M. blythii covers various landscapes from the lower reaches of the Terek river to the southern borders of the Republic. N. lasiopterus, N. leisleri, P. pygmaeus, H. savii, B. barbastellus and B. caspica habitat in the region is confirmed. A sporadic distribution has been noted for M. daubentoni. P. pipistrellus, P. kuhlii, P. nathusii, N. noctula and E. serotinus should be considered the most common in the flat part, and in some areas are massive. For pairs of cryptic species (M. mystacinus and M. davidii, P. pipistrellus and P. pygmaeus) places of their joint habitat are established. The species status of M. nattereri s.l. living in the Sarykum region has been revised. Based on the results of genetic analysis specimens from this part of the region should be classified as M. cf. tschuliensis. Data on migratory species show that the flat part of the territory serves as a place of mass summer stay of males of N. noctula and P. nathusii. At the same time, the findings of pregnant females prove that part of their populations in the Dagestan is settled and uses the floodplain forests of the plain as a place for reproduction.","PeriodicalId":309848,"journal":{"name":"Russian Journal of Ecosystem Ecology","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123238768","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 : 1900-01-01DOI: 10.21685/2500-0578-2022-1-1
A. Dudnikov, O. Chernyshova, M. Simakov, S. Titov
. Background. In literary sources, you can find some references to three species of ground squirrels (Spermophilus) that lived on the territory of the Samara Region. The borders of the region underwent the strong-est historical changes during the XIX and XX centuries. At the same time, it is reliably possible to speak only about the constant presence of only two species of ground squirrels – russet ( S. major ) and little ground squirrel ( S. pygmaeus ). The penetration of a third species into the modern territory of the region – the speckled ground squirrel ( S. suslicus ) from the neighboring Ulyanovsk region was constantly predicted, but not recorded. The aim of the work was to analyze all historical data on the finds of ground squirrels in the Samara Region, to study the current state of the populations of ground squirrels in the modern territory of the Samara region with the specification of the species composition of the fauna of ground squirrels in the region, as well as to study the nature of the rela-tionship of species of ground squirrels in secondary contact zones. Materials and methods. The material for the work was data from field studies of ground squirrels populations in the period from 2016 to 2021, conducted on the territory of the Samara region and adjacent regions, as well as literary data on the distribution of these rodent species in the XIX and XX centuries in the study region. In addition, the work used genetic data obtained during the analysis of biomaterial (biopsy) collected by non-invasive methods during field studies in some populations of ground squirrels, as well as the results of bioacoustic analysis. Results. The russet and little ground squirrels in the Samara region are species located on the border of their ranges and reducing their numbers (conservation status 2). The modern distribution of species is fragmented. The colonies of the russet ground squirrel ( n = 36) are con-fined to various marginal and anthropogenic transformed landscapes. There are few known modern habitats of the little ground squirrel in the region ( n = 13), which is due to the severe degradation of the typical arid steppe areas. In 2012 a hybrid female was found in the narrow overlap zone of the distribution areas of russet and little ground squirrels. The speckled ground squirrel is endangered on the border of its range (conservation status 1). Until the early 2000s, reliable facts of its habitat in the region were not noted. In 2021, a small colony of speckled ground squirrel was discovered in the vicinity of Syzran. Genetic data indicate the migration path of the formation of this speckled ground squirrel colony. Conclusion. The conducted studies of the current state of populations of three species of ground squirrels ( S. major, S. pygmaeus, S. suslicus ) on the territory of the Samara Region indicate: 1) most of their colonies have low numbers and stable isolation, 2) the distribution areas of species are highly fragmented and form na
{"title":"THE HISTORY OF THE STUDY OF THE DISTRIBUTION AND THE CURRENT STATE OF THE POPULATIONS OF GROUND SQUIRRELS OF THE SAMARA REGION","authors":"A. Dudnikov, O. Chernyshova, M. Simakov, S. Titov","doi":"10.21685/2500-0578-2022-1-1","DOIUrl":"https://doi.org/10.21685/2500-0578-2022-1-1","url":null,"abstract":". Background. In literary sources, you can find some references to three species of ground squirrels (Spermophilus) that lived on the territory of the Samara Region. The borders of the region underwent the strong-est historical changes during the XIX and XX centuries. At the same time, it is reliably possible to speak only about the constant presence of only two species of ground squirrels – russet ( S. major ) and little ground squirrel ( S. pygmaeus ). The penetration of a third species into the modern territory of the region – the speckled ground squirrel ( S. suslicus ) from the neighboring Ulyanovsk region was constantly predicted, but not recorded. The aim of the work was to analyze all historical data on the finds of ground squirrels in the Samara Region, to study the current state of the populations of ground squirrels in the modern territory of the Samara region with the specification of the species composition of the fauna of ground squirrels in the region, as well as to study the nature of the rela-tionship of species of ground squirrels in secondary contact zones. Materials and methods. The material for the work was data from field studies of ground squirrels populations in the period from 2016 to 2021, conducted on the territory of the Samara region and adjacent regions, as well as literary data on the distribution of these rodent species in the XIX and XX centuries in the study region. In addition, the work used genetic data obtained during the analysis of biomaterial (biopsy) collected by non-invasive methods during field studies in some populations of ground squirrels, as well as the results of bioacoustic analysis. Results. The russet and little ground squirrels in the Samara region are species located on the border of their ranges and reducing their numbers (conservation status 2). The modern distribution of species is fragmented. The colonies of the russet ground squirrel ( n = 36) are con-fined to various marginal and anthropogenic transformed landscapes. There are few known modern habitats of the little ground squirrel in the region ( n = 13), which is due to the severe degradation of the typical arid steppe areas. In 2012 a hybrid female was found in the narrow overlap zone of the distribution areas of russet and little ground squirrels. The speckled ground squirrel is endangered on the border of its range (conservation status 1). Until the early 2000s, reliable facts of its habitat in the region were not noted. In 2021, a small colony of speckled ground squirrel was discovered in the vicinity of Syzran. Genetic data indicate the migration path of the formation of this speckled ground squirrel colony. Conclusion. The conducted studies of the current state of populations of three species of ground squirrels ( S. major, S. pygmaeus, S. suslicus ) on the territory of the Samara Region indicate: 1) most of their colonies have low numbers and stable isolation, 2) the distribution areas of species are highly fragmented and form na","PeriodicalId":309848,"journal":{"name":"Russian Journal of Ecosystem Ecology","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130624462","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 : 1900-01-01DOI: 10.21685/2500-0578-2019-4-1
O. Zheleznyy
Every summer, wildfires caused by human activity and extreme weather conditions are ravaging vast areas of Siberian boreal forests. Due to its links to ecosystem change and carbon balance, it is particularly important to research forest recovery after these events. This work attempts to integrate remotely sensed and fieldwork data in order to explore the variability of after-fire succession due to environmental factors and burn severity in the Barguzinsky reserve. Additionally, we assess the applicability of spectral indices as a means of the forest regrowth estimation. Three key areas impacted by numerous fires since 1961 were selected for surveying, and a broad Landsat 5–7 imagery analysis had been carried out prior to it. Change of summer values of NBR spectral index provided information about burn severity, while annual changes in summer and early spring (illustrative of evergreen conifers) NDVI – about the intensity and direction of after-fire forest cover change. The results show high heterogeneity in succession processes, which can be attributed to environmental conditions. Boggy plains are characterised by slow but successful recovery of the larch (deciduous) and Siberian pine (establishing late and growing slow) forest, which, however, is poorly noticeable on satellite imagery. Drier areas within the plains and hill-slopes show a different pattern: they are rapidly occupied by pioneer species such as birch and fireweed, which constitute a full ‘recovery’ of NDVI after as little as 5–7 years after the fire. Resulting mixed birch and Scots pine stands with Siberian pine saplings highlight a substantial difference between secondary and intact coniferous taiga. Mountain fire site has much slower rates of recovery, the mosaic of which is majorly influenced by relief and microclimate. Suggested by imagery analysis differences in after-fire death rates of different species have also been confirmed by field data.
{"title":"WILDFIRE-INDUCED FOREST COVER CHANGE IN THE BARGUZINSKY NATURE RESERVE","authors":"O. Zheleznyy","doi":"10.21685/2500-0578-2019-4-1","DOIUrl":"https://doi.org/10.21685/2500-0578-2019-4-1","url":null,"abstract":"Every summer, wildfires caused by human activity and extreme weather conditions are ravaging vast areas of Siberian boreal forests. Due to its links to ecosystem change and carbon balance, it is particularly important to research forest recovery after these events. This work attempts to integrate remotely sensed and fieldwork data in order to explore the variability of after-fire succession due to environmental factors and burn severity in the Barguzinsky reserve. Additionally, we assess the applicability of spectral indices as a means of the forest regrowth estimation. Three key areas impacted by numerous fires since 1961 were selected for surveying, and a broad Landsat 5–7 imagery analysis had been carried out prior to it. Change of summer values of NBR spectral index provided information about burn severity, while annual changes in summer and early spring (illustrative of evergreen conifers) NDVI – about the intensity and direction of after-fire forest cover change. The results show high heterogeneity in succession processes, which can be attributed to environmental conditions. Boggy plains are characterised by slow but successful recovery of the larch (deciduous) and Siberian pine (establishing late and growing slow) forest, which, however, is poorly noticeable on satellite imagery. Drier areas within the plains and hill-slopes show a different pattern: they are rapidly occupied by pioneer species such as birch and fireweed, which constitute a full ‘recovery’ of NDVI after as little as 5–7 years after the fire. Resulting mixed birch and Scots pine stands with Siberian pine saplings highlight a substantial difference between secondary and intact coniferous taiga. Mountain fire site has much slower rates of recovery, the mosaic of which is majorly influenced by relief and microclimate. Suggested by imagery analysis differences in after-fire death rates of different species have also been confirmed by field data.","PeriodicalId":309848,"journal":{"name":"Russian Journal of Ecosystem Ecology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130571178","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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