{"title":"Populus suaveolens Fisch. morphology in the populations of the North-East of Russia","authors":"A. Klimov, B. V. Proshkin","doi":"10.17223/19988591/55/2","DOIUrl":"https://doi.org/10.17223/19988591/55/2","url":null,"abstract":"","PeriodicalId":37153,"journal":{"name":"Vestnik Tomskogo Gosudarstvennogo Universiteta-Biologiya","volume":"12 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86691005","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}
E. Snegin, Anatoliy S. Barkhatov, V. Kiselev, S. R. Yusupov, E. Snegina
{"title":"Estimation of genomic DNA damage in populations of the marsh frog (Pelophylax ridibundus Pallas, 1771) of the Belgorod agglomeration by DNA comet assay","authors":"E. Snegin, Anatoliy S. Barkhatov, V. Kiselev, S. R. Yusupov, E. Snegina","doi":"10.17223/19988591/55/4","DOIUrl":"https://doi.org/10.17223/19988591/55/4","url":null,"abstract":"","PeriodicalId":37153,"journal":{"name":"Vestnik Tomskogo Gosudarstvennogo Universiteta-Biologiya","volume":"185 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73941833","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}
N. V. Trusov, S. Apryatin, Andrej N. Timonin, V. Shipelin, I. Gmoshinski, D. Nikityuk
Specialized food products and biologically active food supplements enriched with minor biologically active substances are considered as a useful supplement in the treatment of obesity and other nutrition-dependent diseases. Biologically active substances of food can have a complex effect on the expression of a large number of genes, which can affect the results of a therapy. The aim of the study was to analyze the nutrigenomic mechanisms of the effect of biologically active substances - l-carnitine and resveratrol on the expression of liver genes of DBA/2J mice and DBCB tetrahybrid, differing in genotype and sensitivity to the development of diet-induced obesity, using the method of full transcriptomic profiling of liver tissue. We carried out the experiment on male DBA/2J mice and the hybrid of the 2nd generation DBCB, obtained by crossing 4 lines of mice (DBA/2J, BALB/c, CBA/ lac and С57Black/6J). Mice for the experiment were obtained from Stolbovaya nursery, Federal State Budgetory Scientific Institution Scientific Center of Biomedical Technologies of the Federal Medical-Biological Agency (Moscow region, Russia). We worked with animals in accordance with international recommendations (Directive 2010/63/EU on the protection of animals used for scientific purposes adopted on September 22, 2010; Guide for the care and use of laboratory animals. Eighth Edition / Committee for the Update of the Guide for the Care and Use of Laboratory Animals; Institute for Laboratory Animal Research (ILAR); Division on Earth and Life Studies (DELS); National Research Council of the National Academies. Washington: The National Academies Press. 2011).The mice were divided into four groups with an equal number of 8 individuals. During 65 days, animals of the 1st (control) groups received a balanced semi-synthetic diet and purified drinking water, the 2nd groups received a high-carbohydrate and high-fat diet with a high fat content (30% by of dry matter of the diet) and replacing drinking water by 20% fructose solution, 3rd groups - high-carbohydrate and high-fat diet with the addition of resveratrol at a dose of 25 mg/kg body weight, 4th groups - high-carbohydrate and high-fat diet with the addition of l-carnitine at a dose of 300 mg/kg body weight. Full transcriptome analysis was performed using the Gene Expression Hybridization Kit (Agilent Technologies, USA) on SurePrint G3 Mouse GE 8×60K Microarray Kit microarrays. Differential gene expression was expressed as base 2 logarithm of increasing or decreasing fluorescence (log2 FC) compared to control groups, separately for DBA/2J and DBCB mice. Chip scan data and calculation of differential expression values were exported to the “R” IDE and bioinformatics analysis was performed with quantile normalization and further analysis in the limma package. The packages AnnotationDbi, org.Rn.eg.db, pathview, gage, gageData were used to identify metabolic pathways among the genes, metabolic pathways and functions of biological
{"title":"Comparative evaluation of the effect of resveratrol and carnitine on the full transcriptomic profile of liver tissue in mice with different sensitivity to the development of alimentary obesity","authors":"N. V. Trusov, S. Apryatin, Andrej N. Timonin, V. Shipelin, I. Gmoshinski, D. Nikityuk","doi":"10.17223/19988591/54/5","DOIUrl":"https://doi.org/10.17223/19988591/54/5","url":null,"abstract":"Specialized food products and biologically active food supplements enriched with minor biologically active substances are considered as a useful supplement in the treatment of obesity and other nutrition-dependent diseases. Biologically active substances of food can have a complex effect on the expression of a large number of genes, which can affect the results of a therapy. The aim of the study was to analyze the nutrigenomic mechanisms of the effect of biologically active substances - l-carnitine and resveratrol on the expression of liver genes of DBA/2J mice and DBCB tetrahybrid, differing in genotype and sensitivity to the development of diet-induced obesity, using the method of full transcriptomic profiling of liver tissue. We carried out the experiment on male DBA/2J mice and the hybrid of the 2nd generation DBCB, obtained by crossing 4 lines of mice (DBA/2J, BALB/c, CBA/ lac and С57Black/6J). Mice for the experiment were obtained from Stolbovaya nursery, Federal State Budgetory Scientific Institution Scientific Center of Biomedical Technologies of the Federal Medical-Biological Agency (Moscow region, Russia). We worked with animals in accordance with international recommendations (Directive 2010/63/EU on the protection of animals used for scientific purposes adopted on September 22, 2010; Guide for the care and use of laboratory animals. Eighth Edition / Committee for the Update of the Guide for the Care and Use of Laboratory Animals; Institute for Laboratory Animal Research (ILAR); Division on Earth and Life Studies (DELS); National Research Council of the National Academies. Washington: The National Academies Press. 2011).The mice were divided into four groups with an equal number of 8 individuals. During 65 days, animals of the 1st (control) groups received a balanced semi-synthetic diet and purified drinking water, the 2nd groups received a high-carbohydrate and high-fat diet with a high fat content (30% by of dry matter of the diet) and replacing drinking water by 20% fructose solution, 3rd groups - high-carbohydrate and high-fat diet with the addition of resveratrol at a dose of 25 mg/kg body weight, 4th groups - high-carbohydrate and high-fat diet with the addition of l-carnitine at a dose of 300 mg/kg body weight. Full transcriptome analysis was performed using the Gene Expression Hybridization Kit (Agilent Technologies, USA) on SurePrint G3 Mouse GE 8×60K Microarray Kit microarrays. Differential gene expression was expressed as base 2 logarithm of increasing or decreasing fluorescence (log2 FC) compared to control groups, separately for DBA/2J and DBCB mice. Chip scan data and calculation of differential expression values were exported to the “R” IDE and bioinformatics analysis was performed with quantile normalization and further analysis in the limma package. The packages AnnotationDbi, org.Rn.eg.db, pathview, gage, gageData were used to identify metabolic pathways among the genes, metabolic pathways and functions of biological ","PeriodicalId":37153,"journal":{"name":"Vestnik Tomskogo Gosudarstvennogo Universiteta-Biologiya","volume":"13 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85359883","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}
I. Zuev, P. Y. Andrushchenko, N. O. Yablokov, D. V. Dementiev, T. Zotina
The regulation of river flow by dams of hydroelectric power plants (HPPs) has a significant impact on the populations of migratory fish species, preventing their movement between the upstream and downstream sections. Violation of the level and thermal regime of the river in the downstream of the HPP can also lead to a modification of the migration process, both within the main channel and between the main channel and its adjoining system. It is assumed that after the construction of the dam of Krasnoyarsk hydroelectric power station, a significant part of the population of the Baikal grayling Thymallus baicalensis in the downstream section switched to a sedentary lifestyle. However, quantitative assessments of this phenomenon have not yet been carried out. The middle course of the Yenisei River in the downstream of the HPP is a specific watercourse with a smoothed seasonal amplitude of water temperatures and a high biomass of benthic invertebrates, up to 10-30 g/m2 . Such conditions provide an increase in the growth rate of grayling in the main channel of the Yenisei, and lead to the formation of the structure of its scales, which differs from fish from the tributaries of the Yenisei. An additional feature of the Yenisei in the downstream of the HPP is that the content of technogenic radionuclides, in particular, radiocesium, 137Cs, increased compared to the background levels, below the point of radioactive discharges of the Mining-and-Chemical Combine ROSATOM (MCC) located near the town of Zheleznogorsk (See Fig. 1). Thus, high growth rates, a unique structure of scales, and an increased concentration of radiocesium can be considered as markers of graylings that constantly inhabit the main channel of the Yenisei in the downstream of Krasnoyarsk HPP. Within the framework of this work, we, for the first time, attempted to assess the ratio of settled and migrated individuals of the Baikal grayling from the tributaries in the thermally altered section of the Yenisei on the basis of the structure of the scales. As a verification of the proposed marker, we used the linear dimensions of fish and the content of radioactive cesium in their tissues. A sample of 161 individuals of the Baikal grayling was used in this work. Fish were collected in the section of the main channel of the Yenisei near the mouth of the Kan River, near the village of Khloptunovo (56º28′05″ N, 93º38′53″ E) in July–November 2019. When working with animals, the authors followed the recommendations of Directive 2010/63 / EU of the European Parliament and the Council of the European Union. Fork Length and total weight of fish were measured. Grayling scales taken in the lateral line region were photographed and then used to count the number of sclerites in the completed annual rings. The principle of differentiation of grayling individuals by their origin is based on previously obtained results on an increased number of sclerites on the scales of fish (primarily in the second annual ri
{"title":"Identification of sedentary and migrating graylings in the Yenisei River using scales","authors":"I. Zuev, P. Y. Andrushchenko, N. O. Yablokov, D. V. Dementiev, T. Zotina","doi":"10.17223/19988591/56/7","DOIUrl":"https://doi.org/10.17223/19988591/56/7","url":null,"abstract":"The regulation of river flow by dams of hydroelectric power plants (HPPs) has a significant impact on the populations of migratory fish species, preventing their movement between the upstream and downstream sections. Violation of the level and thermal regime of the river in the downstream of the HPP can also lead to a modification of the migration process, both within the main channel and between the main channel and its adjoining system. It is assumed that after the construction of the dam of Krasnoyarsk hydroelectric power station, a significant part of the population of the Baikal grayling Thymallus baicalensis in the downstream section switched to a sedentary lifestyle. However, quantitative assessments of this phenomenon have not yet been carried out. The middle course of the Yenisei River in the downstream of the HPP is a specific watercourse with a smoothed seasonal amplitude of water temperatures and a high biomass of benthic invertebrates, up to 10-30 g/m2 . Such conditions provide an increase in the growth rate of grayling in the main channel of the Yenisei, and lead to the formation of the structure of its scales, which differs from fish from the tributaries of the Yenisei. An additional feature of the Yenisei in the downstream of the HPP is that the content of technogenic radionuclides, in particular, radiocesium, 137Cs, increased compared to the background levels, below the point of radioactive discharges of the Mining-and-Chemical Combine ROSATOM (MCC) located near the town of Zheleznogorsk (See Fig. 1). Thus, high growth rates, a unique structure of scales, and an increased concentration of radiocesium can be considered as markers of graylings that constantly inhabit the main channel of the Yenisei in the downstream of Krasnoyarsk HPP. Within the framework of this work, we, for the first time, attempted to assess the ratio of settled and migrated individuals of the Baikal grayling from the tributaries in the thermally altered section of the Yenisei on the basis of the structure of the scales. As a verification of the proposed marker, we used the linear dimensions of fish and the content of radioactive cesium in their tissues. A sample of 161 individuals of the Baikal grayling was used in this work. Fish were collected in the section of the main channel of the Yenisei near the mouth of the Kan River, near the village of Khloptunovo (56º28′05″ N, 93º38′53″ E) in July–November 2019. When working with animals, the authors followed the recommendations of Directive 2010/63 / EU of the European Parliament and the Council of the European Union. Fork Length and total weight of fish were measured. Grayling scales taken in the lateral line region were photographed and then used to count the number of sclerites in the completed annual rings. The principle of differentiation of grayling individuals by their origin is based on previously obtained results on an increased number of sclerites on the scales of fish (primarily in the second annual ri","PeriodicalId":37153,"journal":{"name":"Vestnik Tomskogo Gosudarstvennogo Universiteta-Biologiya","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88396080","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}
{"title":"Volumetric characteristics of the external respiration function in ski racers in the annual cycle","authors":"N. G. Varlamova, E. Boiko","doi":"10.17223/19988591/55/5","DOIUrl":"https://doi.org/10.17223/19988591/55/5","url":null,"abstract":"","PeriodicalId":37153,"journal":{"name":"Vestnik Tomskogo Gosudarstvennogo Universiteta-Biologiya","volume":"4 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76354520","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}
For hundreds of years, humans have been a soil formation factor. With the recent industrial development of vast territories, the formation of soils in technogenic and postanthropogenic conditions requires more attention. This study reviews the literature on the soils of human-transformed or human-made landscapes (technogenic landscapes), in which soil formation starts on a new technogenic substrate. Such soils may occur in different bioclimatic conditions. We focused on processes that govern soil morphology and the subsequent transformation of these soils. Often, the soils of technogenic landscapes are characterized by high bulk density values and by the presence of dense contact. Their properties are affected mainly by organic matter accumulation (humus, litter, and peat). The paper also covers approaches to the reclamation of technogenic landscapes, the main stages, and partly the reclamation options. It is noted that the efficiency of reclamation activities depends on the available resources and timely decision-making. We assessed the efficiency of soil reclamation methods and suggested technogenic landscape survey techniques. The major approaches to soil classification in technogenic landscapes in national and international soil classification systems are briefly discussed, and an approximate correlation of soil names used in different systems is suggested. All considered classifications provide the opportunity to assess the soil properties and specifics of soil formation in technogenic landscapes. However, in most studies, the soil diagnostics are limited to top-order taxa only. The paper contains 3 Figures, 2 Tables, and 140 References.
{"title":"Soil formation in technogenic landscapes: trends, results, and representation in the current classifications (Review)","authors":"D. Sokolov, V. Androkhanov, E. Abakumov","doi":"10.17223/19988591/56/1","DOIUrl":"https://doi.org/10.17223/19988591/56/1","url":null,"abstract":"For hundreds of years, humans have been a soil formation factor. With the recent industrial development of vast territories, the formation of soils in technogenic and postanthropogenic conditions requires more attention. This study reviews the literature on the soils of human-transformed or human-made landscapes (technogenic landscapes), in which soil formation starts on a new technogenic substrate. Such soils may occur in different bioclimatic conditions. We focused on processes that govern soil morphology and the subsequent transformation of these soils. Often, the soils of technogenic landscapes are characterized by high bulk density values and by the presence of dense contact. Their properties are affected mainly by organic matter accumulation (humus, litter, and peat). The paper also covers approaches to the reclamation of technogenic landscapes, the main stages, and partly the reclamation options. It is noted that the efficiency of reclamation activities depends on the available resources and timely decision-making. We assessed the efficiency of soil reclamation methods and suggested technogenic landscape survey techniques. The major approaches to soil classification in technogenic landscapes in national and international soil classification systems are briefly discussed, and an approximate correlation of soil names used in different systems is suggested. All considered classifications provide the opportunity to assess the soil properties and specifics of soil formation in technogenic landscapes. However, in most studies, the soil diagnostics are limited to top-order taxa only. The paper contains 3 Figures, 2 Tables, and 140 References.","PeriodicalId":37153,"journal":{"name":"Vestnik Tomskogo Gosudarstvennogo Universiteta-Biologiya","volume":"56 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89597030","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}
Nowadays, due to the rapid development of lightweight unmanned aerial vehicles (UAV), remote sensing systems of ultra-high resolution have become available to many researchers. Conventional ground-based measurements for assessing tree stand attributes can be expensive, as well as time- and labor-consuming. Here, we assess whether remote sensing measurements with lightweight UAV can be more effective in comparison to ground survey methods in the case of temperate mixed forests. The study was carried out at the Prioksko-Terrasny Biosphere Nature Reserve (Moscow region, Russia). This area belongs to a coniferous-broad-leaved forest zone. Our field works were carried out on the permanent sampling plot of 1 ha (100×100 m) established in 2016. The coordinates of the plot center are N 54.88876°, E 37.56273° in the WGS 84 datum. All trees with DBH (diameter at breast height) of at least 6 cm (779 trees) were mapped and measured during the ground survey in 2016 (See Fig. 1 and Table 1). Mapping was performed with Laser Technology TruPulse 360B angle and a distance meter. First, polar coordinates of each tree trunk were measured, and then, after conversion to the cartesian coordinates, the scheme of the stand was validated onsite. Species and DBH were determined for each tree. For each living tree, we detected a social status class (according to Kraft). Also for living trees, we measured the tree height and the radii of the crown horizontal projection in four cardinal directions. A lightweight UAV Phantom 4 (DJI-Innovations, Shenzhen, China) equipped with an integrated camera of 12Mp sensor was used for aerial photography in this study. Technical parameters of the camera are available in Table 2. The aerial photography was conducted on October 12, 2017, from an altitude of 68 m. The commonly used mosaic flight mode was used with 90% overlapping both for side and front directions. We applied Agisoft Metashape software for orthophoto mosaic image and dense point cloud building. The canopy height model (CHM) was generated with lidR package in R. We used lasground() function and cloth simulation filter for classification of ground points. To create a normalized dataset with the ground at 0, we used spatial interpolation algorithm tin based on a Delaunay triangulation, which performs a linear interpolation within each triangle, implemented in the lasnormilise() function. CHM was generated according to the pit-free algorithm based on the computation of a set of classical triangulations at different heights. The location and height of individual trees were automatically detected by the function FindTreesCHM() from the package rLIDAR in R. The algorithm implemented in this function is local maximum with fixed window size. Accuracy assessment of automatically detected trees (in QGIS software) was performed through visual interpretation of orthophoto mosaic and comparison with ground survey data. The number of correctly detected trees, omitted by the algorithm and n
{"title":"Obtaining tree stand attributes from unmanned aerial vehicle (UAV) data: the case of mixed forests","authors":"N. Ivanova, M. Shashkov, V. Shanin","doi":"10.17223/19988591/54/8","DOIUrl":"https://doi.org/10.17223/19988591/54/8","url":null,"abstract":"Nowadays, due to the rapid development of lightweight unmanned aerial vehicles (UAV), remote sensing systems of ultra-high resolution have become available to many researchers. Conventional ground-based measurements for assessing tree stand attributes can be expensive, as well as time- and labor-consuming. Here, we assess whether remote sensing measurements with lightweight UAV can be more effective in comparison to ground survey methods in the case of temperate mixed forests. The study was carried out at the Prioksko-Terrasny Biosphere Nature Reserve (Moscow region, Russia). This area belongs to a coniferous-broad-leaved forest zone. Our field works were carried out on the permanent sampling plot of 1 ha (100×100 m) established in 2016. The coordinates of the plot center are N 54.88876°, E 37.56273° in the WGS 84 datum. All trees with DBH (diameter at breast height) of at least 6 cm (779 trees) were mapped and measured during the ground survey in 2016 (See Fig. 1 and Table 1). Mapping was performed with Laser Technology TruPulse 360B angle and a distance meter. First, polar coordinates of each tree trunk were measured, and then, after conversion to the cartesian coordinates, the scheme of the stand was validated onsite. Species and DBH were determined for each tree. For each living tree, we detected a social status class (according to Kraft). Also for living trees, we measured the tree height and the radii of the crown horizontal projection in four cardinal directions. A lightweight UAV Phantom 4 (DJI-Innovations, Shenzhen, China) equipped with an integrated camera of 12Mp sensor was used for aerial photography in this study. Technical parameters of the camera are available in Table 2. The aerial photography was conducted on October 12, 2017, from an altitude of 68 m. The commonly used mosaic flight mode was used with 90% overlapping both for side and front directions. We applied Agisoft Metashape software for orthophoto mosaic image and dense point cloud building. The canopy height model (CHM) was generated with lidR package in R. We used lasground() function and cloth simulation filter for classification of ground points. To create a normalized dataset with the ground at 0, we used spatial interpolation algorithm tin based on a Delaunay triangulation, which performs a linear interpolation within each triangle, implemented in the lasnormilise() function. CHM was generated according to the pit-free algorithm based on the computation of a set of classical triangulations at different heights. The location and height of individual trees were automatically detected by the function FindTreesCHM() from the package rLIDAR in R. The algorithm implemented in this function is local maximum with fixed window size. Accuracy assessment of automatically detected trees (in QGIS software) was performed through visual interpretation of orthophoto mosaic and comparison with ground survey data. The number of correctly detected trees, omitted by the algorithm and n","PeriodicalId":37153,"journal":{"name":"Vestnik Tomskogo Gosudarstvennogo Universiteta-Biologiya","volume":"28 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74558563","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}
Spruce forests of the Tuva Republic are not sufficiently described in literature. Spruce forests occupy small areas, but they are characterized by high species diversity. Enclaves of forest communities outside the forest belt are particularly interesting. The actual problem concerns species composition which forms plant communities existing under environmental and climate conditions that are not favorable for it. The aim of the research is to describe the communities of the valley dark coniferous forests in the model river valley in Central Tuva, to assess their diversity, to analyze species composition and to identify the main factors determining it. In the course of the fieldwork in 2020, we examined coniferous forests along the Koptu river, on the southern slope of the Academic Obruchev range (See Figures). In this part of the range, the foothills are occupied by steppe vegetation; forest-steppe landscapes prevail at altitudes of 800-1000 m; above there is the taiga belt, the upper border of the forest is about 1900 m above sea level. Two key areas were investigated; one of them is located in the middle course of the river within the taiga belt (51.90- 51.92°N; 95.45-95.48°E, 1400-1500 m above sea level), the other is in the lower course of the river in the forest-steppe belt (51.55-51.70°N; 95.34-95.45°E, 700-900 m above sea level). In total, 11 relevés were made on plots of 20×20 m by the standard method. We established that the forests are rich in species: 98 taxa were registered (See Table). It could be expected that coniferous forests in the river valley within the forest-steppe belt are a continuation of the above located communities, a continuation of communities from the taiga belt. However, our materials have demonstrated that it is not so. We revealed that, despite the physiognomic similarity, the dark coniferous communities growing in the river valley in its lower course differ significantly from those growing within the taiga belt (See Table). Larix sibirica is abundant everywhere; but in the taiga belt Pinus sibirica dominates in the valley communities, and Picea obovata prevailes in the river valley in the forest-steppe belt. Apart from it, the communities of these two key sites differ significantly in their species composition. Analysis of the ecology of differentiating species shows that the difference is due to a complex of factors. Four groups of species can be distinguished in the investigated forests: I. Taiga species which are only encountered in forests of the upper part and are absent below (Aegopodium alpestre, Carex iljinii, Cerastium pauciflorum, Vaccinium vitis-idaea, V. uliginosum). II. Meadow species, symmetrically, only occur in the forests of the lower part and are absent in the taiga belt (Galium boreale, Lathyrus pratensis, Rubus saxatilis and Vicia cracca, Achillea asiatica, Adonis sibirica, Artemisia laciniata, Iris ruthenica). The two groups mentioned above reflect the difference in altitude as well as the i
{"title":"Spruce forests of the Koptu River valley (the Republic of Tuva) as a relict of Late Pleistocene vegetation","authors":"N. Lashchinskiy, O. Pisarenko","doi":"10.17223/19988591/54/3","DOIUrl":"https://doi.org/10.17223/19988591/54/3","url":null,"abstract":"Spruce forests of the Tuva Republic are not sufficiently described in literature. Spruce forests occupy small areas, but they are characterized by high species diversity. Enclaves of forest communities outside the forest belt are particularly interesting. The actual problem concerns species composition which forms plant communities existing under environmental and climate conditions that are not favorable for it. The aim of the research is to describe the communities of the valley dark coniferous forests in the model river valley in Central Tuva, to assess their diversity, to analyze species composition and to identify the main factors determining it. In the course of the fieldwork in 2020, we examined coniferous forests along the Koptu river, on the southern slope of the Academic Obruchev range (See Figures). In this part of the range, the foothills are occupied by steppe vegetation; forest-steppe landscapes prevail at altitudes of 800-1000 m; above there is the taiga belt, the upper border of the forest is about 1900 m above sea level. Two key areas were investigated; one of them is located in the middle course of the river within the taiga belt (51.90- 51.92°N; 95.45-95.48°E, 1400-1500 m above sea level), the other is in the lower course of the river in the forest-steppe belt (51.55-51.70°N; 95.34-95.45°E, 700-900 m above sea level). In total, 11 relevés were made on plots of 20×20 m by the standard method. We established that the forests are rich in species: 98 taxa were registered (See Table). It could be expected that coniferous forests in the river valley within the forest-steppe belt are a continuation of the above located communities, a continuation of communities from the taiga belt. However, our materials have demonstrated that it is not so. We revealed that, despite the physiognomic similarity, the dark coniferous communities growing in the river valley in its lower course differ significantly from those growing within the taiga belt (See Table). Larix sibirica is abundant everywhere; but in the taiga belt Pinus sibirica dominates in the valley communities, and Picea obovata prevailes in the river valley in the forest-steppe belt. Apart from it, the communities of these two key sites differ significantly in their species composition. Analysis of the ecology of differentiating species shows that the difference is due to a complex of factors. Four groups of species can be distinguished in the investigated forests: I. Taiga species which are only encountered in forests of the upper part and are absent below (Aegopodium alpestre, Carex iljinii, Cerastium pauciflorum, Vaccinium vitis-idaea, V. uliginosum). II. Meadow species, symmetrically, only occur in the forests of the lower part and are absent in the taiga belt (Galium boreale, Lathyrus pratensis, Rubus saxatilis and Vicia cracca, Achillea asiatica, Adonis sibirica, Artemisia laciniata, Iris ruthenica). The two groups mentioned above reflect the difference in altitude as well as the i","PeriodicalId":37153,"journal":{"name":"Vestnik Tomskogo Gosudarstvennogo Universiteta-Biologiya","volume":"12 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80178905","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}
{"title":"DNA polymorphism and genetic diversity of the oak lace bug (Corythucha arcuata Say) population in Krasnodar Krai","authors":"E. Besedina, V. Kil","doi":"10.17223/19988591/55/3","DOIUrl":"https://doi.org/10.17223/19988591/55/3","url":null,"abstract":"","PeriodicalId":37153,"journal":{"name":"Vestnik Tomskogo Gosudarstvennogo Universiteta-Biologiya","volume":"37 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86316208","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}
A. Kasatova, V. Kanygin, E. Zavjalov, I. Razumov, A. Kichigin, A. Tsygankova, O. Solovieva, D. Kasatov, V. Chernov
{"title":"Accumulation and toxic effects of boron-containing drugs in SW-620 models","authors":"A. Kasatova, V. Kanygin, E. Zavjalov, I. Razumov, A. Kichigin, A. Tsygankova, O. Solovieva, D. Kasatov, V. Chernov","doi":"10.17223/19988591/55/6","DOIUrl":"https://doi.org/10.17223/19988591/55/6","url":null,"abstract":"","PeriodicalId":37153,"journal":{"name":"Vestnik Tomskogo Gosudarstvennogo Universiteta-Biologiya","volume":"158 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74878662","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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