Transactions of Papanin Institute for Biology of Inland Waters RAS最新文献

{"title":"CHANGING THE MYCOTOXIN PROFILE IN BROWN ALGAE FROM STORM EMISSIONS","authors":"A. Burkin, G. Kononenko","doi":"10.47021/0320-3557-2022-13-17","DOIUrl":"https://doi.org/10.47021/0320-3557-2022-13-17","url":null,"abstract":"Brown algae Fucus vesiculosus Linnaeus, Fucus serratus Linnaeus, Ascophyllum nodosum (Linnaeus) Le Jolis and Saccharina latissima (Linnaeus) C.E. Lane, C. Mayes, Druehl & G.W. Saunders collected from natural substrates and from storm emissions in one of the ecotopes of the Kandalaksha Bay of the White Sea (66°31' N 33°11' E) were used for comparative assessment of the content of low-molecular metabolites of micromycetes beloning to the genera Fusarium Link, Alternaria Nees, Penicillium Link, Aspergillus P. Micheli ex Haller, Myrothecium Tode, Cladosporium Link and others. After drying, the samples were crushed in a laboratory mill, a mixture of acetonitrile and water was used for extraction in a volume ratio of 84:16 with a consumption rate 10 mL per 1 g specimen. Extracts after 10-fold dilution with the buffer solution were analyzed using a set of certified enzyme-linked immunosorbent assay systems (Russia). The lower limit of quantitative measurements corresponded to an 85% level of antibody binding. All analyzed compounds – T-2 toxin, diacetoxiscirpenol, deoxynivalenol, zearalenone, fumonisins, alternariol, ochratoxin A, citrinin, PR-toxin, mycophenolic acid, aflatoxin B1, sterigmatocystin, cyclopiazonic acid, emodin, roridin A and ergot alkaloids – were found in the fresh thalli of F. vesiculosus, F. serratus, and A. nodosum. In the samples from the emissions, the profile of mycotoxins has been significantly changed. In F. vesiculosus and F. serratus the content of mycotoxins decreased sharply and uniformly and, as a result, the incidence of detection reduced to 8% and 15%. In A. nodosum, alternariol, aflatoxin B1 and mycophenolic acid were revealed in 17% of samples near the limits of determination of methods, and the other components of the complex could not be found. The mycotoxins were absent in the fresh thalli of S. latissima, and only some of the samples from the emissions had weak contamination with mycophenolic acid and emodin.","PeriodicalId":198921,"journal":{"name":"Transactions of Papanin Institute for Biology of Inland Waters RAS","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126364289","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":"ON THE CALCULATION OF THE PHOSPHORUS REGIME AT THE INITIAL FILLING OF THE RESERVOIR","authors":"Y. Datsenko","doi":"10.47021/0320-3557-2022-7-12","DOIUrl":"https://doi.org/10.47021/0320-3557-2022-7-12","url":null,"abstract":"The results of the calculations in changes of the phosphorus concentration in the reservoir during the formation of its ecosystem after the initial filling by river waters are presented. During this period, flooded soils and vegetation represent a significant internal source of nutrients that maintain a high level of ecosystem productivity. Calculations are based on the balance model of phosphorus in a completely mixed water body using the average values of the parameters given in the literature. A modification of the phosphorus balance as presented by Dillon and Rigler was used. Phosphorus leaching from flooded soils is approximated by an exponential relationship. Graphically illustrated is a typical course of change in the phosphorus concentration in the reservoir under the influence of flooded soils, which is a relatively rapid increase in concentrations followed by a gradual decrease. The most important parameter of this process is the time of the onset of the maximum concentration. By calculations have obtained dependences of the time of onset of the maximum phosphorus concentration in the reservoir on the intensity of the leaching process and the parameter of the balance equation. This parameter is the ratio of the water exchange coefficient and the phosphorus retention coefficient. It is shown that the time for the onset of the maximum phosphorus concentrations after flooding decreases sharply with an increase in the intensity of water exchange at its small values, but later the role of this factor becomes insignificant.","PeriodicalId":198921,"journal":{"name":"Transactions of Papanin Institute for Biology of Inland Waters RAS","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132387796","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":"BIOLOGICAL CHARACTERISTIC OF THE REPRODUCTIVE GUILD OF ACIPENSER RUTHENUS (LINNAEUS, 1758) IN THE SEVERNAYA DVINA RIVER","authors":"I. Studenov, A. Bykov, D. Chupov","doi":"10.47021/0320-3557-2022-60-71","DOIUrl":"https://doi.org/10.47021/0320-3557-2022-60-71","url":null,"abstract":"According to results of ichthyological monitoring of the sterlet population in the middle part of the Severnaya Dvina river in the spring period 2018–2020 established a greater dependence of the value of catches in stationary traps on the dynamics of the water level in the river, compared with water temperature. On the spawn places located in the middle part of the Severnaya Dvina river in the catches of stationary traps, sterlet dominates both in quantity and in mass. Average catch per unit of fishing effort (CPUE) is more dependent on water level dynamics than on water temperature. Age and length composition of sterlet catches is represented by two-thirds by fish of the younger age classes (3–5+) and small sizes (30–45 cm and 0.2–0.6 kg). The sexual structure of spawning sterlet represented by about 80% of males. The sterlet in the Severnaya Dvina river is currently grow faster than 70 years ago – probably due to an increase in the average water temperature in the river. In pre-spawning and spawning parts of sterlet population proportion of maturing and sexually mature females and males is 90%. The number of past-spawners increases with increasing water temperature. Currently, sterlet grows more slowly than in the 50–60s of the 20th century. Sterlet is intensively fed in the Severnaya Dvina river during the spawning period. In the middle part of the river, the basis of spring nutrition is chironomids and caddis fly larvae. Secondary fed objects are bivalve mollusks and blackfly. Random objects characterizing the nutritional spectrum in the spring include larvae of flies, butterflies, hemipterous and fish eggs. There are no significant differences in fed of sterlet with an increase in its size in the Severnaya Dvina river.","PeriodicalId":198921,"journal":{"name":"Transactions of Papanin Institute for Biology of Inland Waters RAS","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128862142","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":"NEW FLORISTIC RECORDS OF VAUCHERIA (XANTHOPHYCEAE) IN EUROPEAN RUSSIA","authors":"Новые Флористические, Находки Вошерий, Европейской России","doi":"10.47021/0320-3557-2022-26-45","DOIUrl":"https://doi.org/10.47021/0320-3557-2022-26-45","url":null,"abstract":"New records of 17 species Vaucheria, the genus of yellow-green algae, are reported from 12 administrative regions of European Russia: Vladimir, Volgograd, Voronezh, Kostroma, Lipetsk, Moscow, Nizhny Novgorod, Rostov, Tambov, Yaroslavl regions, Krasnodar Territory, and the Republic of Adygea. Comments are given on morphology of the studied specimens and species distributions. V. birostris is reported as a new species to European Russia.","PeriodicalId":198921,"journal":{"name":"Transactions of Papanin Institute for Biology of Inland Waters RAS","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122138970","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":"NEW RECORDS OF HALIPLIDAE, DYTISCIDAE, HYDROPHILIDAE AND SCIRTIDAE (COLEOPTERA) FROM LIPETSK OBLAST","authors":"A. Sazhnev, A. Prokin, Ya. Urbanus","doi":"10.47021/0320-3557-2021-7-14","DOIUrl":"https://doi.org/10.47021/0320-3557-2021-7-14","url":null,"abstract":"Six species of aquatic Coleoptera are recorded from the Lipetsk Oblast for the first time: Haliplus flavicollis Sturm, 1834 (Haliplidae); Agabus paludosus (Fabricius, 1801), Ilybius neglectus (Erichson, 1837), I. wasastjernae (C.R. Sahlberg, 1824), Hydroporus incognitus Sharp, 1869, Hygrotus versicolor (Schaller, 1783) (Dytiscidae), Hydrobius rottenbergii Gerhardt, 1872 (Hydrophilidae). Two species (Ilybius wasastjernae, Hydroporus incognitus), are recorded at the southernmost limits of the known range in the European part of Russia. The record of Contacyphon laevipennis (Tournier, 1868) is confirmed by provided material. For three species, original photographs of the habitus and male genitalia are provided, and for two ones – of the habitat.","PeriodicalId":198921,"journal":{"name":"Transactions of Papanin Institute for Biology of Inland Waters RAS","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131527269","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":"FORMATION OF ZOOPLANKTON IN THE BOGUCHANY RESERVOIR DURING ITS FILLING","authors":"N. Sheveleva","doi":"10.47021/0320-3557-2021-25-40","DOIUrl":"https://doi.org/10.47021/0320-3557-2021-25-40","url":null,"abstract":"For the first time, we present the materials of the spatial distribution of qualitative and quantitative indicators of zooplankton in the first year of top water level (TWL) in the Boguchany Reservoir. We indicate the dynamics of the formation of the zooplankton community in the Upper section of the reservoir during its filling (from 2013 to 2015). The Irkutsk, Bratsk, and Ust-Ilimsk reservoirs influence the composition and structure of zooplankton in the Boguchany Reservoir that closes the cascade of the Angara HPPs, and there is a great similarity of the crustacean and rotifer fauna with the upstream artificial reservoirs. During the study period (from 2013 to 2017), the plankton fauna included 84 species from 49 genera and 23 families. The horizontal distribution of quantitative indicators throughout the water area of the reservoir had a mosaic pattern. The relative and absolute proportion of rotifers in the composition of zooplankton decreased from the Upper section to the Lower one, and the dominance of crustaceans was opposite. Due to this, the maximum number (129±97.8 thou ind./m3) of zooplankton was recorded in the Upper section, and the biomass (2080±676 mg/m3) – in the Lower section. The obtained unique data on the composition, structure and quantitative development of zooplankton in the Boguchany Reservoir during its formation and filling are important for further monitoring of its state, including the assessment of the feeding of planktonophagous fish and juvenilefish.","PeriodicalId":198921,"journal":{"name":"Transactions of Papanin Institute for Biology of Inland Waters RAS","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132024463","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":"ZOOINDICATION OF WATER BODIES WITHIN PETROLEUM INDUSTRIAL TERRITORIES OF THE BOLSHEZEMELSKAYA TUNDRA","authors":"T. Shikhova, E. Scopin, R. Bolshakov","doi":"10.47021/0320-3557-2021-83-92","DOIUrl":"https://doi.org/10.47021/0320-3557-2021-83-92","url":null,"abstract":"Intensive development of the oil and gas industry and accidents on oil pipelines become the reason of the environmental tension in the Pechora River basin (Nenets Autonomous District). Data on changes in water quality in five lakes and a small watercourse in the territory of oil fields of the Bolshezemelskaya tundra are presented. The bioindication indices (Berger-Parker (D), Shannon biodiversity (H '), Woodiwiss (W), Pantle-Buck (S), Balushkina (Kch)) were applied. The assessment of the state of water bodies in the Kolva River Basin (large lakes - Kolvaty and Nercheity), in the Laya River Basin (shallow lakes - Krugloye, Bezymyannoe 1, Bezymyannoe 2, stream) was done. The 28 samples of zoobenthos was processed by the standard method in July 2012 and 2019. A low diversity of benthic invertebrates was revealed for 5–20 taxa of the rank of families and orders. During the considered period, the changes have occurred in the structure and composition of the zoobenthos of water bodies. In 2019, the species diversity decreased in Kolvaty Lake (H'<2). There are no species of the crustacean complex (Monoporeia affinis, Mesocyclops leuckarti, Heterocope borealis) and larvae of Trichoptera. Only Sphaeriidae and Chironomidae with a predominance of Psectrocladius psilopterus (D = 55%) were recorded. The species diversity in Nercheity Lake increased (H'> 2) with a change in the dominant taxa: the larvae of the chironomids Ablabesmyia monilis (D = 44%) were found in 2012, the lower crustaceans (D = 47–51%) - in 2019. However, according to the totality of hydrobiological indicators, the quality of water in the lakes of the Kolva River Basin in 2019 compared to 2012 did not change significantly. The quality of water in the Krugloye and Bezymyannoe 1, Bezymyannoe 2 lakes (the Laya River Basin) has improved that is confirmed by a significant increase of species diversity. The most characteristic groups of benthic communities in these lakes are lower crustaceans (Cladocera, Copepoda, Ostracoda) and Chironomidae. The indicators of clean waters are o-β-mesosaprobic species Cladocera, Copepoda Heterocope appendiculata, Heterocope borealis (in the oligotrophic lakes), caddisfly Limnephilus stigma (in the Krugloe Lake), rotifer Polyarthra euryptera (in the Bezymyannoe 2 Lake), mayfly larvae Centroptilum luteolum. More resistant to organic pollution Copepoda began to prevail in abundance and diversity in Bezymyannoe 1 and Bezymyannoe 2 lakes, with a decrease in the taxonomic composition of Cladocera, which indicates the eutrophication of these water bodies. In most lakes, the water corresponds to the III quality class (\"moderate pollution\"), but in the Kolvaty lake and in the Bezymyanny stream (the Laya River basin) was recorded the biogenic pollution. Totally, insignificant taxonomic changes in zoobenthos structure took place in the lakes and the state of water bodies of the surveyed tundra remains relatively stable.","PeriodicalId":198921,"journal":{"name":"Transactions of Papanin Institute for Biology of Inland Waters RAS","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117092100","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":"SPATIAL STRUCTURE OF VEGETATION OF LARGE LAKES OF THE ONEGA PENINSULA (ON THE EXAMPLE OF MURAKANSKOE AND BOLSHOE VYGOZERO LAKE)","authors":"D. Moseev, A. Krasheninnikov, A. Bragin, A. Lohov","doi":"10.47021/0320-3557-2021-41-51","DOIUrl":"https://doi.org/10.47021/0320-3557-2021-41-51","url":null,"abstract":"Studying the vegetation of freshwater lakes remains a topical subject in the national parks of the Arkhangelsk Region. It is in particular important for the Onega Pomorie National Park, which is located along the coasts of the Onega and Dvinskoy bays (of the White Sea) in the northern part of the Onega Peninsula. This article examines the spatial structure of aquatic and coastal-aquatic vegetation of Murakanskoye and Bolshoye Vygozero – two large lakes of the Onega Peninsula. The spatial structure is presented in the form of ecological series of associations of plant communities. A comparative characteristic of the lakes’ vegetation is given in the discussion of the article. The littoral zone is poorly developed in both lakes mentioned above. It depends on the openness of the water areas to the winds from the north. It is indicated that the species composition and vegetation structure of the Bolshoye Vygozero Lake mostly depends on water transparency and high acidity; these factors determine the development of the Phragmitetum australis fontinaliosum dalecarlicae, Phragmitetum australis caricosum aquatilis, Caricetum aquatilis associations. In the Murakanskoe Lake, high water transparency and slightly alkaline pH values contribute to the development of communities of pondweeds – such as Potamogeton alpinus, Potamogeton praelongus, and communities of the Lobelietum dortmannae isoëtosum echinosporae association.","PeriodicalId":198921,"journal":{"name":"Transactions of Papanin Institute for Biology of Inland Waters RAS","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133239417","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":"TO THE QUESTION OF MORPHOLOGY OF MYRICA GALE L. GENERATIVE PLANTS","authors":"I. Tolchennikova, I. Antonova","doi":"10.47021/0320-3557-2021-52-62","DOIUrl":"https://doi.org/10.47021/0320-3557-2021-52-62","url":null,"abstract":"The distribution of Myrica gale on the coast of the Gulf of Finland is confined to regularly flooded coastal habitats, characterized by milder environmental conditions compared to the uplands and under the residual influence of the Gulf Stream. In Russia, M. gale is located on the northeastern border of the range. The study of the features of the species that contribute to the dispersal in the northern direction, and the properties of the environment that prevent such dispersal, is always of great interest. Growth in colder conditions in comparison with other members of the family, mainly inhabitants of the tropical and subtropical areas, affected the formation of such adaptations as deciduousness, changes in the structure of flowers and bark, as well as the presence of a large number of protective leaf organs. Their quantitative and qualitative analysis made it possible to establish the presence of 4 lignified parchment-like scales that do not fall completely and 6 membranous with partially lignified tops scales that stretch out while unfolding. An attempt was made for the first time to analyze the spatial structure of the shoots of the species. A sympodial growth of shoots and the phenomenon of acrotonia, as well as a spiral formation of lateral shoots, were established. In the structure of the mature generative branch of M. gale there were identified 3 types of shoots: long growth, medium and short, and also their leaf series were analyzed. \u0000Leaf series of short and medium shoots are characterized by significant asymmetry compared to leaf series of long shoots and are incomplete. The curves were constructed on the basis of such characteristics of leaf organs as their total number, length along the central vein, including the petioles (if they are presented), and internode lengths. A large number of rudiments of leaf organs determines the gradual formation of the buds, and the imperfection of the structure of the scales reflects the weak protective ability of these organs. Both features indicate the deep ancientness of the species and the difficulty in adapting to cold environmental conditions. Mature generative branches of M. gale are similar in habit to small trees, which is of particular interest in the context of modeling possible directions of adaptation during the spread of species of subtropical origin to more northern regions.","PeriodicalId":198921,"journal":{"name":"Transactions of Papanin Institute for Biology of Inland Waters RAS","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128690291","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":"POLYPLOIDY OF NORTH EAST ASIA AQUATIC AND SEMIAQUATIC VASCULAR PLANTS","authors":"E. Andriyanova, O. Mochalova","doi":"10.47021/0320-3557-2021-63-82","DOIUrl":"https://doi.org/10.47021/0320-3557-2021-63-82","url":null,"abstract":"The chromosome numbers of aquatic and semiaquatic vascular plants growing in extreme North-East Asia, east of the Lena River, were analyzed. We have reviewed the information about the karyological peculiarity of the aquatic flora based on published data, including our own definitions. The karyological data are considered depending on the taxonomic position, distribution and ecological characteristics of the species. The chromosome numbers are known for 119 out of 123 species. There is no data on Zannichellia komarovii, Eleocharis termale, Stuckenia subretusa and Potamogeton sibiricus. In the aquatic flora of North-East Asia, the proportion of polyploids is higher (79%) than that reported for the entire Beringian flora (69%). We analyzed species for the presence of polyploidy depending on the type of area. Analysis by latitudinal groups revealed that all Arctic and hypoarctic species of aquatic plants are polyploids. The minimum proportion of polyploids is observed among arctoboreal species. Analysis by longitudinal groups revealed that the lowest proportion of polyploids was noted among species found only in Eurasia and absent in North America (61%), and it was the highest among pluriregional species (96%). The species of the families Cyperaceae, Lemnaceae, Ranunculaceae and Poaceae are characterized by a high level of variability in the number of chromosomes. The greatest variety of chromosome numbers is observed in the polymorphic species Caltha palustris s. l., Agrostis stolonifera, Dupontia fisheri s. l., Phragmites australis, in all species of the genus Eleocharis, and in Nymphaea tetragona, Acorus calamus, Calla palustris. The isolated cases of a high level of ploidy were found in the extreme northeast, at the northern borders of ranges, in 3 species - Hippuris vulgaris, Arctophila fulva and Beckmannia syzigachne. Only diploids are known in the families Equisetaceae, Typhaceae, Zosteraceae from the flora of North East Asia. We revealed the existence of several chromosomal races in Ranunculus gmelinii and Caltha palustris (Ranunculaceae) in the Magadan region; the distribution of chromosomal races is partly related to geographic location and partly to plant habitats. Rare karyotypes in these species are observed in aquatic forms with mainly vegetative reproduction, growing in non-freezing watercourses.","PeriodicalId":198921,"journal":{"name":"Transactions of Papanin Institute for Biology of Inland Waters RAS","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124345909","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}