Pub Date : 2022-11-13DOI: 10.35885/1684-7318-2022-3-361-369
A. Opaev
In most passerine species, an individual bird sings multiple song types to be combined into non-random song sequences. Because of this non-randomness, stereotype sequences of several or even dozens of song types appear in the vocalization of some species. Passerine birds acquire songs through some learning process while imitating other individuals. Song sharing is well known in songbirds and is a consequence of the song learning. Apparently, above the song type level, transitions between song types may be also shared. However, we still do not know exactly, how long are those song sequencies a bird can memorize? We analyze song sequence sharing in Radde’s warbler. Each song of this species consists of a dozen of short notes and lasts 1 s. In many males, the identity of the next song type in a sequence can be predicted on the basis of the previous song type (linear syntax). We found that males can share (i.e. memorize) song sequences from no more than 5 song types. Individual repertoires included up to 40 song types. Therefore, the ability of memorizing song sequences are rather limited in Radde’s warbler, as shared song sequences were rather short in comparison with the total size of the repertoire.
{"title":"How long are the vocal sequences a passerine bird can memorize? Common song sequences of Radde’s warbler males (Phylloscopus schwarzi) (Passeriformes, Aves)","authors":"A. Opaev","doi":"10.35885/1684-7318-2022-3-361-369","DOIUrl":"https://doi.org/10.35885/1684-7318-2022-3-361-369","url":null,"abstract":"In most passerine species, an individual bird sings multiple song types to be combined into non-random song sequences. Because of this non-randomness, stereotype sequences of several or even dozens of song types appear in the vocalization of some species. Passerine birds acquire songs through some learning process while imitating other individuals. Song sharing is well known in songbirds and is a consequence of the song learning. Apparently, above the song type level, transitions between song types may be also shared. However, we still do not know exactly, how long are those song sequencies a bird can memorize? We analyze song sequence sharing in Radde’s warbler. Each song of this species consists of a dozen of short notes and lasts 1 s. In many males, the identity of the next song type in a sequence can be predicted on the basis of the previous song type (linear syntax). We found that males can share (i.e. memorize) song sequences from no more than 5 song types. Individual repertoires included up to 40 song types. Therefore, the ability of memorizing song sequences are rather limited in Radde’s warbler, as shared song sequences were rather short in comparison with the total size of the repertoire.","PeriodicalId":33231,"journal":{"name":"Povolzhskii ekologicheskii zhurnal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48144679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-13DOI: 10.35885/1684-7318-2022-3-322-335
N. Politaeva, I. Illin, A. Oparina, A. S. Donetskova
The use of microalgae Chlorella kessleri VKPM A1-11 ARM (RF, NPO Algobiotechnology) for environmental and energy purposes is considered. The results of our study of the use of C. kessleri microalgae biomass as a biosorbent to purify model wastewater from Cu2+ ions under static conditions are presented. Biosorption is a promising technology for the treatment of industrial effluents containing various heavy metal compounds, but the issues of economic benefits of using biosorbents, their environmental safety and the cost of disposal of used sorbents are subject to much discussion. The paper proposes to dispose the used biosorbent formed after wastewater treatment from copper as an additional fuel. The copper concentration in the filtrate was determined by colorimetric analysis with sodium diethyldithiocarbamate. The cleaning efficiency and sorption capacity of the dry mass of C. kessleri were obtained by calculation. The maximum sorption capacity for Cu2+ ions was 4.2 mg/g. The purification efficiency reached 87% at the initial concentration of Cu2+ ions being 97 mg/l. Tests to estimate the specific heat of combustion of C. kessleri biomass and used biosorbents based thereon were carried out by the calorimetric method using a bomb calorimeter. The specific heats of combustion were 22,125 kJ/kg and 21,674 kJ/kg, respectively. A comparison of these values with traditional energy carriers is given. A technological scheme has been developed for a waste-free cycle of using C. kessleri to treat wastewater from industrial enterprises with the production of several valuable resources as end products, such as purified water, energy resources, fertilizers, and recycled metals. The obtained results of our study can be applied in technologies for post-treatment of wastewater from various industrial enterprises using biological non-waste resources.
{"title":"New energy approaches to the use of waste biosorbents of microalgae Chlorella kessleri (Chlorellaceae, Chlorellales)","authors":"N. Politaeva, I. Illin, A. Oparina, A. S. Donetskova","doi":"10.35885/1684-7318-2022-3-322-335","DOIUrl":"https://doi.org/10.35885/1684-7318-2022-3-322-335","url":null,"abstract":"The use of microalgae Chlorella kessleri VKPM A1-11 ARM (RF, NPO Algobiotechnology) for environmental and energy purposes is considered. The results of our study of the use of C. kessleri microalgae biomass as a biosorbent to purify model wastewater from Cu2+ ions under static conditions are presented. Biosorption is a promising technology for the treatment of industrial effluents containing various heavy metal compounds, but the issues of economic benefits of using biosorbents, their environmental safety and the cost of disposal of used sorbents are subject to much discussion. The paper proposes to dispose the used biosorbent formed after wastewater treatment from copper as an additional fuel. The copper concentration in the filtrate was determined by colorimetric analysis with sodium diethyldithiocarbamate. The cleaning efficiency and sorption capacity of the dry mass of C. kessleri were obtained by calculation. The maximum sorption capacity for Cu2+ ions was 4.2 mg/g. The purification efficiency reached 87% at the initial concentration of Cu2+ ions being 97 mg/l. Tests to estimate the specific heat of combustion of C. kessleri biomass and used biosorbents based thereon were carried out by the calorimetric method using a bomb calorimeter. The specific heats of combustion were 22,125 kJ/kg and 21,674 kJ/kg, respectively. A comparison of these values with traditional energy carriers is given. A technological scheme has been developed for a waste-free cycle of using C. kessleri to treat wastewater from industrial enterprises with the production of several valuable resources as end products, such as purified water, energy resources, fertilizers, and recycled metals. The obtained results of our study can be applied in technologies for post-treatment of wastewater from various industrial enterprises using biological non-waste resources.","PeriodicalId":33231,"journal":{"name":"Povolzhskii ekologicheskii zhurnal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44807726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-13DOI: 10.35885/1684-7318-2022-3-336-349
E. Romanova, E. I. Solomaykin, A. Bakiev, R. Gorelov, A. Klenina
A comparative interspecific assessment of the leukocyte profile of young Elaphe dione, Natrix natrix and N. tessellata is given. Juvenile snakes were obtained in captivity from females captured, being pregnant, from Volga populations. Eosinophils and basophils predominated in the blood of young E. dione, the total content of mononuclear cells (agranulocytes) was lower compared to the young of N. tessellata and N. natrix. At the same time, the species of the genus Natrix differed in the content of all three types of mononuclear cells, namely: the proportion of azurophils and monocytes was higher in N. tessellata, and that of lymphocytes was higher in N. natrix. The main contribution to the balance of mononuclear cells was made by lymphocytes. The leukocyte composition of young snakes had no pronounced lymphocytic profile, the contribution of the specific reactivity of the organism to the overall adaptive response of the body of young snakes to environmental conditions was small. According to the content of lymphocytes, the studied species were arranged in descending order in the following row: N. natrix (Me – 60.00, IQR – 2.50) → N. tessellata (52.00, 6.00) → E. dione (40.00, 5.00). The increased value of the leukocyte shift index in E. dione young testified to the predominant role of granulocytes in the immune response with some lag of lymphocyte-monocyte cells and later activation of the effector link of the immune response (lymphocytes) compared with young of N. natrix and N. tessellata. While the specific reaction of the immune system decreased, a compensator activation of the nonspecific protective blood system was observed in the organism of E. dione. The increase in the content of granulocytes in the blood of young snakes was a characteristic indicator of an increase in environmental stress, assessed by the integral leukocyte index (the ratio of heterophiles and lymphocytes). Integral leukocyte indices reflected an imbalance of the adaptive response of the blood system in young snakes kept in captivity in relation to adult males and females from natural populations.
{"title":"Adaptive reactions of the blood system of Elaphe dione, Natrix natrix, and N. tessellata (Reptilia: Colubridae)","authors":"E. Romanova, E. I. Solomaykin, A. Bakiev, R. Gorelov, A. Klenina","doi":"10.35885/1684-7318-2022-3-336-349","DOIUrl":"https://doi.org/10.35885/1684-7318-2022-3-336-349","url":null,"abstract":"A comparative interspecific assessment of the leukocyte profile of young Elaphe dione, Natrix natrix and N. tessellata is given. Juvenile snakes were obtained in captivity from females captured, being pregnant, from Volga populations. Eosinophils and basophils predominated in the blood of young E. dione, the total content of mononuclear cells (agranulocytes) was lower compared to the young of N. tessellata and N. natrix. At the same time, the species of the genus Natrix differed in the content of all three types of mononuclear cells, namely: the proportion of azurophils and monocytes was higher in N. tessellata, and that of lymphocytes was higher in N. natrix. The main contribution to the balance of mononuclear cells was made by lymphocytes. The leukocyte composition of young snakes had no pronounced lymphocytic profile, the contribution of the specific reactivity of the organism to the overall adaptive response of the body of young snakes to environmental conditions was small. According to the content of lymphocytes, the studied species were arranged in descending order in the following row: N. natrix (Me – 60.00, IQR – 2.50) → N. tessellata (52.00, 6.00) → E. dione (40.00, 5.00). The increased value of the leukocyte shift index in E. dione young testified to the predominant role of granulocytes in the immune response with some lag of lymphocyte-monocyte cells and later activation of the effector link of the immune response (lymphocytes) compared with young of N. natrix and N. tessellata. While the specific reaction of the immune system decreased, a compensator activation of the nonspecific protective blood system was observed in the organism of E. dione. The increase in the content of granulocytes in the blood of young snakes was a characteristic indicator of an increase in environmental stress, assessed by the integral leukocyte index (the ratio of heterophiles and lymphocytes). Integral leukocyte indices reflected an imbalance of the adaptive response of the blood system in young snakes kept in captivity in relation to adult males and females from natural populations.","PeriodicalId":33231,"journal":{"name":"Povolzhskii ekologicheskii zhurnal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41776855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-12DOI: 10.35885/1684-7318-2022-3-307-321
A. B. Mamaev, M. L. Oparin, O. Oparina
The paper presents the results of our long-term monitoring of the family of larks (Alauda arvensis L., Melanocorypha calandra L., M. leucoptera Pallas, M. yeltoniensis J. R. Forster and Calandrella rufescens Vieillot) in the semi-desert zone of the Saratov Trans-Volga region. Bird censuses were carried out at 4 key sites on permanent routes during the nesting period, the total length of the census transects was 792 km. Statistical indicators of population dynamics were calculated, namely: the growth rates (Tnp.) and average density values (ind. / 100 ha) of each lark species. A statistical multivariate factor analysis (F-test) was carried out, with the help of which we were able to reveal the influence of a whole range of factors on the lark density dynamics. Changes in habitat conditions at the key areas (Fcrit. = 1.30, p = 0.003), as well as weather factors (Fcrit. = 1.39, p = 0.004) of particular years, have a significant impact on the density dynamics of larks. Evaluation of the variance showed heterogeneity of the sample (St = 0.119, p = 0.006), therefore, the average densities of larks differs significantly from each other. Thus, the structure of the lark community and the annual density of each species are the result of the environmental conditions of the habitats at each key site, and the weather conditions of particular years.
{"title":"Features of the population dynamics of larks (Alaudidae, Aves) in the semi-desert zone of the Saratov Trans-Volga region","authors":"A. B. Mamaev, M. L. Oparin, O. Oparina","doi":"10.35885/1684-7318-2022-3-307-321","DOIUrl":"https://doi.org/10.35885/1684-7318-2022-3-307-321","url":null,"abstract":"The paper presents the results of our long-term monitoring of the family of larks (Alauda arvensis L., Melanocorypha calandra L., M. leucoptera Pallas, M. yeltoniensis J. R. Forster and Calandrella rufescens Vieillot) in the semi-desert zone of the Saratov Trans-Volga region. Bird censuses were carried out at 4 key sites on permanent routes during the nesting period, the total length of the census transects was 792 km. Statistical indicators of population dynamics were calculated, namely: the growth rates (Tnp.) and average density values (ind. / 100 ha) of each lark species. A statistical multivariate factor analysis (F-test) was carried out, with the help of which we were able to reveal the influence of a whole range of factors on the lark density dynamics. Changes in habitat conditions at the key areas (Fcrit. = 1.30, p = 0.003), as well as weather factors (Fcrit. = 1.39, p = 0.004) of particular years, have a significant impact on the density dynamics of larks. Evaluation of the variance showed heterogeneity of the sample (St = 0.119, p = 0.006), therefore, the average densities of larks differs significantly from each other. Thus, the structure of the lark community and the annual density of each species are the result of the environmental conditions of the habitats at each key site, and the weather conditions of particular years.","PeriodicalId":33231,"journal":{"name":"Povolzhskii ekologicheskii zhurnal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47105853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-12DOI: 10.35885/1684-7318-2022-3-268-278
E. A. Katzman
The paper is devoted to the resource capacity of habitats of the Eurasian beaver (Castor fiber L.), an invasive species. Insufficient forage supply is a deterrent to the expansion of the range of this species, which has been actively settling in Eurasia in recent decades. Complexes of herbaceous wetland plants (macrophytes) under certain conditions can be a significant source of feed for these animals. However, at the edge of the range, which is currently limited to the forest-steppe zone in the south, the lack of development of aquatic macrophytes could lead to containment of the settlement of this species. It is shown that the conducted studies are important from the viewpoint of forecasting the stability of populations of the Eurasian beaver in the forest-steppe zone, assessing changes in their structure and abundance, and determining the limits of possible expansion of the species' range.
{"title":"Assessment of the biomass of forage macrophytes in a model habitat of the Eurasian beaver (Castor fiber Linnaeus, 1758) (Castoridae, Mammalia) in the State Nature Reserve “Volga forest-step”","authors":"E. A. Katzman","doi":"10.35885/1684-7318-2022-3-268-278","DOIUrl":"https://doi.org/10.35885/1684-7318-2022-3-268-278","url":null,"abstract":"The paper is devoted to the resource capacity of habitats of the Eurasian beaver (Castor fiber L.), an invasive species. Insufficient forage supply is a deterrent to the expansion of the range of this species, which has been actively settling in Eurasia in recent decades. Complexes of herbaceous wetland plants (macrophytes) under certain conditions can be a significant source of feed for these animals. However, at the edge of the range, which is currently limited to the forest-steppe zone in the south, the lack of development of aquatic macrophytes could lead to containment of the settlement of this species. It is shown that the conducted studies are important from the viewpoint of forecasting the stability of populations of the Eurasian beaver in the forest-steppe zone, assessing changes in their structure and abundance, and determining the limits of possible expansion of the species' range.","PeriodicalId":33231,"journal":{"name":"Povolzhskii ekologicheskii zhurnal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42457172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-10DOI: 10.35885/1684-7318-2022-2-206-215
D. T. Tuyen, N. Thanh, N. Khoa, N. C. Cuong
Bioremediation is a promising approach for treating oil-contaminated environments. The main objective of this study was to isolate bacteria capable of degrading hydrocarbons for application in oily wastewater treatment from oil-contaminated sites in Hanoi, Vietnam. The bacterial consortium studied was obtained from an oil-contaminated muddy soil sample enriched with crude oil mixed with diesel oil as a carbon source. The reconstituted consortium was able to degrade 93% of the oil content after 7 days of testing. A total of five pure bacterial strains were isolated on TSA agar from the complex microbial communities and were selected as potential candidates for oily sludge biodegradation processes. These isolates were identified based on their morphological and biochemical characteristics. By using molecular biology techniques, five hydrocarbons degrading bacteria were investigated and identified as Pseudomonas mendocina strain MD1 (OL687411.1), Pseudomonas hydrolytica strain MD2 (OL771695.1), Brucella intermedia strain MD3 (OL687412.1), Pseudomonas stutzeri strain MD4 (OL687413.1), and Stenotrophomonas nitritireducens strain MD5 (OL687414.1). The morphological and biochemical characterization of these bacteria showed that five of them were Gram-negative, rod-shaped, catalase positive, the ideal pH was neutral, and the optimum growth temperature was 30ºC in a culture medium with a salinity of 0.5%. These strains are capable of producing extracellular enzymes, such as lipase, amylase, cellulase, and protease.
{"title":"Identification of hydrocarbon-degrading bacterial consortium isolated from the oil-contaminated muddy soil in Hanoi, Vietnam","authors":"D. T. Tuyen, N. Thanh, N. Khoa, N. C. Cuong","doi":"10.35885/1684-7318-2022-2-206-215","DOIUrl":"https://doi.org/10.35885/1684-7318-2022-2-206-215","url":null,"abstract":"Bioremediation is a promising approach for treating oil-contaminated environments. The main objective of this study was to isolate bacteria capable of degrading hydrocarbons for application in oily wastewater treatment from oil-contaminated sites in Hanoi, Vietnam. The bacterial consortium studied was obtained from an oil-contaminated muddy soil sample enriched with crude oil mixed with diesel oil as a carbon source. The reconstituted consortium was able to degrade 93% of the oil content after 7 days of testing. A total of five pure bacterial strains were isolated on TSA agar from the complex microbial communities and were selected as potential candidates for oily sludge biodegradation processes. These isolates were identified based on their morphological and biochemical characteristics. By using molecular biology techniques, five hydrocarbons degrading bacteria were investigated and identified as Pseudomonas mendocina strain MD1 (OL687411.1), Pseudomonas hydrolytica strain MD2 (OL771695.1), Brucella intermedia strain MD3 (OL687412.1), Pseudomonas stutzeri strain MD4 (OL687413.1), and Stenotrophomonas nitritireducens strain MD5 (OL687414.1). The morphological and biochemical characterization of these bacteria showed that five of them were Gram-negative, rod-shaped, catalase positive, the ideal pH was neutral, and the optimum growth temperature was 30ºC in a culture medium with a salinity of 0.5%. These strains are capable of producing extracellular enzymes, such as lipase, amylase, cellulase, and protease.","PeriodicalId":33231,"journal":{"name":"Povolzhskii ekologicheskii zhurnal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44037376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-09DOI: 10.35885/1684-7318-2022-2-150-172
A. Kashin, T. Kritskaya, A. O. Kondratieva, N. Petrova, I. V. Shilova, A. S. Parkhomenko, R. Murtazaliev
The range of the polychromous Tulipa suaveolens Roth comprises almost the whole Ponto-Caspian Steppe, from the south-east of Ukraine to western Kazakhstan. High variation in flower color is a unique feature of this species, but features of its geographical distribution remain unclear. We studied T. suaveolens tepal color variation in 56 natural populations across the European range. Tepal colors were detected from digital images using the Lab color model with two chromatic components, a (red color intensity) and b (yellow color intensity). A conclusion was made that, throughout the European range, an obvious T. suaveolens flower color gradient is expressed in the direction from the south-west to the north-east, along which the red chromatic component intensity decreases. A similar gradient is observed when the height above mean sea level increases. The chromatic component a was shown to have a spatial autocorrelation and to depend on the long-term bioclimatic environmental parameters, temperature and precipitation. Thus, the identified geographical trends in the T. suaveolens flower color distribution across the studied part of its range are a consequence of natural selection caused by these two abiotic factors.
{"title":"Geographical features of Tulipa suaveolens Roth (Liliaceae, Magnoliophyta) distribution by flower color across its European range","authors":"A. Kashin, T. Kritskaya, A. O. Kondratieva, N. Petrova, I. V. Shilova, A. S. Parkhomenko, R. Murtazaliev","doi":"10.35885/1684-7318-2022-2-150-172","DOIUrl":"https://doi.org/10.35885/1684-7318-2022-2-150-172","url":null,"abstract":"The range of the polychromous Tulipa suaveolens Roth comprises almost the whole Ponto-Caspian Steppe, from the south-east of Ukraine to western Kazakhstan. High variation in flower color is a unique feature of this species, but features of its geographical distribution remain unclear. We studied T. suaveolens tepal color variation in 56 natural populations across the European range. Tepal colors were detected from digital images using the Lab color model with two chromatic components, a (red color intensity) and b (yellow color intensity). A conclusion was made that, throughout the European range, an obvious T. suaveolens flower color gradient is expressed in the direction from the south-west to the north-east, along which the red chromatic component intensity decreases. A similar gradient is observed when the height above mean sea level increases. The chromatic component a was shown to have a spatial autocorrelation and to depend on the long-term bioclimatic environmental parameters, temperature and precipitation. Thus, the identified geographical trends in the T. suaveolens flower color distribution across the studied part of its range are a consequence of natural selection caused by these two abiotic factors. ","PeriodicalId":33231,"journal":{"name":"Povolzhskii ekologicheskii zhurnal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47587670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-09DOI: 10.35885/1684-7318-2022-2-135-149
T. N. Karmanova, D. I. Gorelysheva
Conditions of the urban environment have a significant impact on the ecology of animals, including helminth communities. The response of the helminth community to ecological imbalance and their adaptation to life in the urban environment remain an urgent problem in parasitology. In this study, we aimed to compare the species diversity and distribution of helminths in urban forest parks with varying degrees of anthropogenic pressure. In urbanized territories of 5 locations of the city of Moscow, the infestation parameters of model rodent species were assessed in comparison with a natural, slightly disturbed territory (the scientific and experimental base “Chernogolovka”). In the four most common rodent species (n = 158), Apodemus agrarius, Sylvaemus uralensis, Microtus arvalis, and Clethrionomys glareolus, caught by Hero's traps, the gastrointestinal tract was removed, the number and species of parasites were determined, and the infestation was assessed by 3 parameters. The species composition of helminths and the presence of three parasite classes in the composition of the helminth fauna of the studied species expectedly corresponded to the characteristics of disturbed areas. In addition, a change in the dominant helminth species (H. polygyrus to H. Spumosa) was noted, which indicated a significant influence of the helminth fauna of synanthropic species on the composition of the parasite communities of wild species living in the city. Our study contributes to the accumulation of information on the species composition of endoparasite communities of murine rodents in the city of Moscow, which is important for compiling an up-to-date epidemiological picture of the city.
{"title":"Helminth fauna of mouse-like rodents in the territory of Moscow City","authors":"T. N. Karmanova, D. I. Gorelysheva","doi":"10.35885/1684-7318-2022-2-135-149","DOIUrl":"https://doi.org/10.35885/1684-7318-2022-2-135-149","url":null,"abstract":"Conditions of the urban environment have a significant impact on the ecology of animals, including helminth communities. The response of the helminth community to ecological imbalance and their adaptation to life in the urban environment remain an urgent problem in parasitology. In this study, we aimed to compare the species diversity and distribution of helminths in urban forest parks with varying degrees of anthropogenic pressure. In urbanized territories of 5 locations of the city of Moscow, the infestation parameters of model rodent species were assessed in comparison with a natural, slightly disturbed territory (the scientific and experimental base “Chernogolovka”). In the four most common rodent species (n = 158), Apodemus agrarius, Sylvaemus uralensis, Microtus arvalis, and Clethrionomys glareolus, caught by Hero's traps, the gastrointestinal tract was removed, the number and species of parasites were determined, and the infestation was assessed by 3 parameters. The species composition of helminths and the presence of three parasite classes in the composition of the helminth fauna of the studied species expectedly corresponded to the characteristics of disturbed areas. In addition, a change in the dominant helminth species (H. polygyrus to H. Spumosa) was noted, which indicated a significant influence of the helminth fauna of synanthropic species on the composition of the parasite communities of wild species living in the city. Our study contributes to the accumulation of information on the species composition of endoparasite communities of murine rodents in the city of Moscow, which is important for compiling an up-to-date epidemiological picture of the city.","PeriodicalId":33231,"journal":{"name":"Povolzhskii ekologicheskii zhurnal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44837204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-09DOI: 10.35885/1684-7318-2022-2-173-192
I. Kirillova, D. Kirillov
The results of our eight-year study of a population of the rare orchid Dactylorhiza incarnata subsp. cruenta at the northern limit of its range (the Komi Republic) are presented. Weather factors (air temperature and precipitations) were revealed to influence features of the small and big life cycles of this species. The number of plants in the studied population was influenced by the weather conditions of the previous growing season, positively by the temperature in August and negatively by frosts in October. The number of generative (flowering) plants had a positive correlation with the air temperature in July of the previous vegetative season. The fruit set was high (71.2%) and negatively associated with precipitation during flowering of this species. The seed number per fruit in the studied population (9,831 pcs on average) was higher than that in the more southern parts of the range of this species. This indicator, as well as the real seed productivity of the species, is positively related to the level of moisture availability of the current growing season. The seed production is high, from 34 thousand to 154.6 thousand seeds per 1 m2 in several study years, it is positively associated with the sum of active temperatures of the previous growing season. The presence of juvenile individuals (10.0–31.7%) over all study years indicates a successful seed reproduction in this population.
{"title":"Impact of weather conditions on the seasonal development, population structure and reproductive success of Dactylorhiza incarnata s. l. (Orchidaceae, Liliopsida) in the Komi Republic","authors":"I. Kirillova, D. Kirillov","doi":"10.35885/1684-7318-2022-2-173-192","DOIUrl":"https://doi.org/10.35885/1684-7318-2022-2-173-192","url":null,"abstract":"The results of our eight-year study of a population of the rare orchid Dactylorhiza incarnata subsp. cruenta at the northern limit of its range (the Komi Republic) are presented. Weather factors (air temperature and precipitations) were revealed to influence features of the small and big life cycles of this species. The number of plants in the studied population was influenced by the weather conditions of the previous growing season, positively by the temperature in August and negatively by frosts in October. The number of generative (flowering) plants had a positive correlation with the air temperature in July of the previous vegetative season. The fruit set was high (71.2%) and negatively associated with precipitation during flowering of this species. The seed number per fruit in the studied population (9,831 pcs on average) was higher than that in the more southern parts of the range of this species. This indicator, as well as the real seed productivity of the species, is positively related to the level of moisture availability of the current growing season. The seed production is high, from 34 thousand to 154.6 thousand seeds per 1 m2 in several study years, it is positively associated with the sum of active temperatures of the previous growing season. The presence of juvenile individuals (10.0–31.7%) over all study years indicates a successful seed reproduction in this population.","PeriodicalId":33231,"journal":{"name":"Povolzhskii ekologicheskii zhurnal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43051675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-13DOI: 10.35885/1684-7318-2022-1-109-119
E. B. Smirnova, M. A. Zanina, N. Semenova, H. S. Arushanyan, V. V. Shelop
The results of our studies of resources and the state of coenopopulations of three species from the genus Viola, namely, V. canina L., V. tricolor L., and V. arvensis Murray, conducted in Romanovsky, Balashovsky and Kalininsky districts of the Saratov region in 2016–2021 are presented. Descriptions of the species’ habitats with geographic coordinates are given. The species V. canina, V. tricolor, and V. arvensis have medicinal, honey-providing and decorative value. Populations of the species are confined to meadow-steppe grass-forb phytocenoses. The phytocenoses with the participation of the studied species differ in dominant and codominant species. As a result of our study of the ontogenetic structure of V. canina cenopopulations (CP), it was found that both CPs have unimodal spectra with a maximum on plants of the virginal group. The cenopopulation type according to the «delta-omega» criterion is transitional. The CP of V. tricolor and CP 2 of V. arvensis are characterized by average reproduction efficiency. The CP 1 of V. arvensis has low reproduction efficiency; the value of the recovery index of its age spectrum is less than one. Regeneration processes in CP 1 of V. arvensis are difficult and unstable. Our analysis of the age structure of CPs using the delta-omega classification has shown that the CP of V. tricolor and CP 1 of V. arvensis are maturing, while CP 2 of V. arvensis is transitional by its position in the delta-omega coordinate system. The yield of the species depended on the degree of moisture in the year. On average, over 5 years of the study, the yield of V. arvensis, V. canina and V. tricolor was 21.51, 19.09 and 27.2 t/ha, respectively. In order to restore the populations, the exploitation of thickets of all species of the genus Viola should be carried out once every three years on 1/3 of the area of thickets.
{"title":"Resources and ontogenetic structure of cenopopulations of the genus Viola (Violaceae, Magnoliópsida) in the Right Volga bank of the Saratov region","authors":"E. B. Smirnova, M. A. Zanina, N. Semenova, H. S. Arushanyan, V. V. Shelop","doi":"10.35885/1684-7318-2022-1-109-119","DOIUrl":"https://doi.org/10.35885/1684-7318-2022-1-109-119","url":null,"abstract":"The results of our studies of resources and the state of coenopopulations of three species from the genus Viola, namely, V. canina L., V. tricolor L., and V. arvensis Murray, conducted in Romanovsky, Balashovsky and Kalininsky districts of the Saratov region in 2016–2021 are presented. Descriptions of the species’ habitats with geographic coordinates are given. The species V. canina, V. tricolor, and V. arvensis have medicinal, honey-providing and decorative value. Populations of the species are confined to meadow-steppe grass-forb phytocenoses. The phytocenoses with the participation of the studied species differ in dominant and codominant species. As a result of our study of the ontogenetic structure of V. canina cenopopulations (CP), it was found that both CPs have unimodal spectra with a maximum on plants of the virginal group. The cenopopulation type according to the «delta-omega» criterion is transitional. The CP of V. tricolor and CP 2 of V. arvensis are characterized by average reproduction efficiency. The CP 1 of V. arvensis has low reproduction efficiency; the value of the recovery index of its age spectrum is less than one. Regeneration processes in CP 1 of V. arvensis are difficult and unstable. Our analysis of the age structure of CPs using the delta-omega classification has shown that the CP of V. tricolor and CP 1 of V. arvensis are maturing, while CP 2 of V. arvensis is transitional by its position in the delta-omega coordinate system. The yield of the species depended on the degree of moisture in the year. On average, over 5 years of the study, the yield of V. arvensis, V. canina and V. tricolor was 21.51, 19.09 and 27.2 t/ha, respectively. In order to restore the populations, the exploitation of thickets of all species of the genus Viola should be carried out once every three years on 1/3 of the area of thickets.","PeriodicalId":33231,"journal":{"name":"Povolzhskii ekologicheskii zhurnal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45179399","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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