Татьяна Юрьевна Газизова, Александр Геннадьевич Русанов, Татьяна Валентиновна Сапелко, Tatyana Gazizova, Alexander Rusanov, Tatyana Sapelko
The article presents the results of studying the subrecent pollen spectra (SPS) and modern aquatic vegetation of four small lakes on Valaam Island (Lake Ladoga) – Germanovskoye, Zimnyakovskoye, Antonievskoye, and Vitalievskoye. We have established that the lakes are humus-rich reservoirs slightly overgrown with typical aquatic vegetation. The moss Fontinalis antipyretica Hedw. is the dominant species among submerged hydrophytes for lakes Germanovskoye, Antonievskoye, and Vitalievskoye. The dominant floating hydrophytes and helophytes are Nuphar lutea (L.) Smith for lakes Germanovskoye and Zimnyakovskoye; Nuphar lutea (L.) Smith, Nymphaea candida J. Presl., Potamogeton spp. for Lake Antonievskoe; Lemna minor L. and Hydrocharis morsus-ranae L. for Lake Vitalievskoye. The similarity of the macrophyte species composition between subrecent SPS and modern aquatic vegetation was analyzed. A high level of similarity was noted only for two lakes – Lake Antonievskoye with the qualitative Jaccard and Sorensen- Czekanowski indices at 0.60 and 0.75, respectively, and Lake Zimnyakovskoye with a high value of the quantitative Bray-Curtis index (0.76). However, almost all macrophyte species that dominated the overgrowth area during our study were present also in subrecent SPS, which suggests that top-core bottom samples quite adequately reflect modern aquatic vegetation. The results prove that studies of macrophyte pollen in the lake sediments hold promise for the study of modern lake ecosystems and for paleoreconstructions.
{"title":"The similarity assessment of the macrophyte species composition between modern aquatic vegetation and subrecent pollen spectra of small lakes on the Valaam Island (Lake Ladoga)","authors":"Татьяна Юрьевна Газизова, Александр Геннадьевич Русанов, Татьяна Валентиновна Сапелко, Tatyana Gazizova, Alexander Rusanov, Tatyana Sapelko","doi":"10.17076/lim1703","DOIUrl":"https://doi.org/10.17076/lim1703","url":null,"abstract":"The article presents the results of studying the subrecent pollen spectra (SPS) and modern aquatic vegetation of four small lakes on Valaam Island (Lake Ladoga) – Germanovskoye, Zimnyakovskoye, Antonievskoye, and Vitalievskoye. We have established that the lakes are humus-rich reservoirs slightly overgrown with typical aquatic vegetation. The moss Fontinalis antipyretica Hedw. is the dominant species among submerged hydrophytes for lakes Germanovskoye, Antonievskoye, and Vitalievskoye. The dominant floating hydrophytes and helophytes are Nuphar lutea (L.) Smith for lakes Germanovskoye and Zimnyakovskoye; Nuphar lutea (L.) Smith, Nymphaea candida J. Presl., Potamogeton spp. for Lake Antonievskoe; Lemna minor L. and Hydrocharis morsus-ranae L. for Lake Vitalievskoye. The similarity of the macrophyte species composition between subrecent SPS and modern aquatic vegetation was analyzed. A high level of similarity was noted only for two lakes – Lake Antonievskoye with the qualitative Jaccard and Sorensen- Czekanowski indices at 0.60 and 0.75, respectively, and Lake Zimnyakovskoye with a high value of the quantitative Bray-Curtis index (0.76). However, almost all macrophyte species that dominated the overgrowth area during our study were present also in subrecent SPS, which suggests that top-core bottom samples quite adequately reflect modern aquatic vegetation. The results prove that studies of macrophyte pollen in the lake sediments hold promise for the study of modern lake ecosystems and for paleoreconstructions.","PeriodicalId":33861,"journal":{"name":"Transactions of the Karelian Research Centre of the Russian Academy of Sciences","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135167804","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}
Михаил Борисович Зобков, Наталия Михайловна Калинкина, Владимир Викторович Ковалевский, Андрей Владимирович Багаев, Наталья Александровна Белкина, Наталья Владимировна Кулик, Мария Валентиновна Зобкова, Татьяна Алексеевна Ефремова, Наталия Евгеньевна Галахина, Наталья Анатольевна Ефременко, Mikhail Zobkov, Natalia Kalinkina, Vladimir Kovalevski, Andrey Bagaev, Natalya Belkina, Natalya Kulik, Maria Zobkova, Tatyana Efremova, Natalia Galakhina, Natalya Efremenko
.
{"title":"Results of interdisciplinary studies of the contamination of Lake Onego water area by microplastic particles","authors":"Михаил Борисович Зобков, Наталия Михайловна Калинкина, Владимир Викторович Ковалевский, Андрей Владимирович Багаев, Наталья Александровна Белкина, Наталья Владимировна Кулик, Мария Валентиновна Зобкова, Татьяна Алексеевна Ефремова, Наталия Евгеньевна Галахина, Наталья Анатольевна Ефременко, Mikhail Zobkov, Natalia Kalinkina, Vladimir Kovalevski, Andrey Bagaev, Natalya Belkina, Natalya Kulik, Maria Zobkova, Tatyana Efremova, Natalia Galakhina, Natalya Efremenko","doi":"10.17076/lim1707","DOIUrl":"https://doi.org/10.17076/lim1707","url":null,"abstract":".","PeriodicalId":33861,"journal":{"name":"Transactions of the Karelian Research Centre of the Russian Academy of Sciences","volume":"8 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135169218","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}
Аркадий Юрьевич Тержевик, Николай Иннокентьевич Пальшин, Татьяна Владимировна Ефремова, Cергей Рэмович Богданов, Сергей Дмитриевич Голосов, Илья Сергеевич Зверев, Сергей Юрьевич Волков, Андрей Васильевич Митрохов, Сергей Игоревич Смирнов, Роман Эдуардович Здоровеннов, Галина Эдуардовна Здоровеннова, Arkady Terzhevik, Nikolai Palshin, Tatyana Efremova, Sergey Bogdanov, Sergey Golosov, Ilia Zverev, Sergey Volkov, Andrey Mitrokhov, Sergey Smirnov, Roman Zdorovennov, Galina Zdorovennova
Information is presented on the directions and results of research at the Hydrophysics Laboratory of the Northern Water Problems Institute of the Karelian Research Center of the Russian Academy of Sciences in 1991–2022. Laboratory staff study hydrophysical processes and phenomena in various lakes of Karelia, in the largest lakes of Eurasia – Onego and Ladoga, in Lake Baikal, in the White Sea, as well as in small lakes of the Arctic zone of Russia. Brief information is provided on the applied developments and basic scientific results produced while implementing state-ordered assignments, international and domestic research projects, including those carried out jointly with Russian and foreign scientific and educational organizations. The main results include: identification of patterns in the formation of the thermal, hydrodynamic, ice, radiation and oxygen regimes of lakes through the annual cycle (with more focus on the ice-covered period); development of a thermal model of Lake Onego; development and implementation of FLake lake model in collaboration with colleagues from the Institute of Limnology of the Russian Academy of Sciences, German Weather Service, and the Institute for Freshwater Ecology and Inland Fisheries (IGB, Germany); development of a 3D model of Lake Vendyurskoe; investigation of energy and greenhouse gas transport in high-latitude lake ecosystems in collaboration with colleagues from the University of Helsinki; assessment of the adaptive properties of Arctic aquatic ecosystems (lakes of the Yamal Peninsula, deltas of the Lena River, Kola Peninsula) in a changing climate in collaboration with colleagues from the St. Petersburg State University; study of turbulence parameters in ice-covered lakes during the period of spring underice convection, numerical modeling (Implicit LES) of radiation-generated convection in collaboration with colleagues from the Physical-Mechanical Institute of the Peter the Great St. Petersburg Polytechnic University; study of hydrophysical processes and phenomena in bays and inlets of the White Sea in collaboration with colleagues from the Water Problems Institute RAS (Moscow) and the Russian State Humanitarian University (St. Petersburg); study of turbulent transport, which determines the conditions for ice build-up and melting in the subglacial boundary layer of Lake Baikal in collaboration with colleagues from the University of Toulouse, France, and the Limnological Institute in Irkutsk.
{"title":"Research by Hydrophysics Laboratory of NWPI KarRC RAS in 1991–2022","authors":"Аркадий Юрьевич Тержевик, Николай Иннокентьевич Пальшин, Татьяна Владимировна Ефремова, Cергей Рэмович Богданов, Сергей Дмитриевич Голосов, Илья Сергеевич Зверев, Сергей Юрьевич Волков, Андрей Васильевич Митрохов, Сергей Игоревич Смирнов, Роман Эдуардович Здоровеннов, Галина Эдуардовна Здоровеннова, Arkady Terzhevik, Nikolai Palshin, Tatyana Efremova, Sergey Bogdanov, Sergey Golosov, Ilia Zverev, Sergey Volkov, Andrey Mitrokhov, Sergey Smirnov, Roman Zdorovennov, Galina Zdorovennova","doi":"10.17076/lim1809","DOIUrl":"https://doi.org/10.17076/lim1809","url":null,"abstract":"Information is presented on the directions and results of research at the Hydrophysics Laboratory of the Northern Water Problems Institute of the Karelian Research Center of the Russian Academy of Sciences in 1991–2022. Laboratory staff study hydrophysical processes and phenomena in various lakes of Karelia, in the largest lakes of Eurasia – Onego and Ladoga, in Lake Baikal, in the White Sea, as well as in small lakes of the Arctic zone of Russia. Brief information is provided on the applied developments and basic scientific results produced while implementing state-ordered assignments, international and domestic research projects, including those carried out jointly with Russian and foreign scientific and educational organizations. The main results include: identification of patterns in the formation of the thermal, hydrodynamic, ice, radiation and oxygen regimes of lakes through the annual cycle (with more focus on the ice-covered period); development of a thermal model of Lake Onego; development and implementation of FLake lake model in collaboration with colleagues from the Institute of Limnology of the Russian Academy of Sciences, German Weather Service, and the Institute for Freshwater Ecology and Inland Fisheries (IGB, Germany); development of a 3D model of Lake Vendyurskoe; investigation of energy and greenhouse gas transport in high-latitude lake ecosystems in collaboration with colleagues from the University of Helsinki; assessment of the adaptive properties of Arctic aquatic ecosystems (lakes of the Yamal Peninsula, deltas of the Lena River, Kola Peninsula) in a changing climate in collaboration with colleagues from the St. Petersburg State University; study of turbulence parameters in ice-covered lakes during the period of spring underice convection, numerical modeling (Implicit LES) of radiation-generated convection in collaboration with colleagues from the Physical-Mechanical Institute of the Peter the Great St. Petersburg Polytechnic University; study of hydrophysical processes and phenomena in bays and inlets of the White Sea in collaboration with colleagues from the Water Problems Institute RAS (Moscow) and the Russian State Humanitarian University (St. Petersburg); study of turbulent transport, which determines the conditions for ice build-up and melting in the subglacial boundary layer of Lake Baikal in collaboration with colleagues from the University of Toulouse, France, and the Limnological Institute in Irkutsk.","PeriodicalId":33861,"journal":{"name":"Transactions of the Karelian Research Centre of the Russian Academy of Sciences","volume":"6 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135167084","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}
Григорий Тевелевич Фрумин, Евгения Сергеевна Негодина, Grigory Frumin, Evgenia Negodina
Natural water bodies located in different geographical regions of Russia vary widely in hydrochemical indicators of water quality. Despite this, unified federal water quality standards (MPCs) have been established for the entire territory of our country, without taking into account the formation process of quantitative and qualitative indicators of water quality in water bodies or respecting the natural uniqueness of the basins in which they are formed. The assessment of the surface water quality on the basis of federal maximum concentration limits completely ignores not only the specific and unique features of catchments but also their natural diversity. A collision arises when the concentrations of certain compounds do not interfere with the stability of the existing biocoenoses but fail to meet the maximum permissible concentrations for reservoirs used for fisheries (MPC), which apply to almost all water bodies in Russia. The purpose of this study is to substantiate the regional concentrations of metals in Lake Pskovskoye. The relevance of the study is due to the need to improve the MPC system for Lake Pskovskoye, which has a fishery value. The calculations were performed with hydrochemical monitoring data for the period 2000–2021. The results of the calculations of regional maximum permissible concentrations (MPCREG) for six metals (total iron, copper, lead, manganese, cadmium, zinc) are presented. Three different methods were used for the calculations: suggested by S. A. Patina, by D. G. Zamolodchikov, and by E. V. Venitsianov and co-authors. Calculations by Patina’s method involve two attributes - the average concentration of a chemical element for the period under review and the standard deviation. Calculations by the method of D.G. Zamolodchikov were based on the upper and lower quartiles of the distribution. The method of E.V. Venitsianov and co-authors employs three attributes - the sample size, the upper quartile of the distribution, and the standard deviation for the quantile of about 0.75. Proceeding from the principle of sanitary maximalism, we argue that the optimal method for calculating metal MPCREGs is the method suggested by E. V. Venitsianov and co-authors. The regional maximum permisslbe concentrations of metals in Lake Pskovskoye proved to tightly correlate with their clarke numbers in the earth’s crust.
俄罗斯不同地理区域的天然水体水质水化学指标差异很大。尽管如此，为我国全境制定了统一的联邦水质标准(MPCs)，但没有考虑水体中水质定量和定性指标的形成过程，也没有尊重形成这些指标的流域的自然独特性。根据联邦最高浓度限值对地表水质量进行评价，不仅完全忽视了集水区的特殊性和独特性，而且也忽视了集水区的自然多样性。当某些化合物的浓度不干扰现有生物群落的稳定性，但未能达到渔业水库的最大允许浓度(MPC)时，就会发生碰撞，这适用于俄罗斯几乎所有的水体。本研究的目的是证实普斯科夫斯科耶湖金属的区域浓度。这项研究的相关性是由于需要改善具有渔业价值的普斯科夫斯科耶湖的MPC系统。计算是根据2000-2021年期间的水化学监测数据进行的。给出了六种金属(总铁、铜、铅、锰、镉、锌)区域最大允许浓度(MPCREG)的计算结果。三种不同的计算方法分别由S. A. Patina、D. G. Zamolodchikov和E. V. Venitsianov及其合著者提出。帕蒂纳的计算方法涉及两个属性——一种化学元素在审查期间的平均浓度和标准偏差。通过D.G. Zamolodchikov方法的计算是基于分布的上、下四分位数。E.V. Venitsianov及其合作者的方法采用了三个属性——样本量、分布的上四分位数以及大约0.75的分位数的标准偏差。从卫生极值原则出发，我们认为计算金属mpcreg的最佳方法是e.v. Venitsianov及其合作者提出的方法。普斯科夫斯科耶湖的区域最大允许金属浓度被证明与地壳中的克拉克数量密切相关。
{"title":"Regional maximum permissible concentrations of metals in Lake Pskovskoye","authors":"Григорий Тевелевич Фрумин, Евгения Сергеевна Негодина, Grigory Frumin, Evgenia Negodina","doi":"10.17076/lim1760","DOIUrl":"https://doi.org/10.17076/lim1760","url":null,"abstract":"Natural water bodies located in different geographical regions of Russia vary widely in hydrochemical indicators of water quality. Despite this, unified federal water quality standards (MPCs) have been established for the entire territory of our country, without taking into account the formation process of quantitative and qualitative indicators of water quality in water bodies or respecting the natural uniqueness of the basins in which they are formed. The assessment of the surface water quality on the basis of federal maximum concentration limits completely ignores not only the specific and unique features of catchments but also their natural diversity. A collision arises when the concentrations of certain compounds do not interfere with the stability of the existing biocoenoses but fail to meet the maximum permissible concentrations for reservoirs used for fisheries (MPC), which apply to almost all water bodies in Russia. The purpose of this study is to substantiate the regional concentrations of metals in Lake Pskovskoye. The relevance of the study is due to the need to improve the MPC system for Lake Pskovskoye, which has a fishery value. The calculations were performed with hydrochemical monitoring data for the period 2000–2021. The results of the calculations of regional maximum permissible concentrations (MPCREG) for six metals (total iron, copper, lead, manganese, cadmium, zinc) are presented. Three different methods were used for the calculations: suggested by S. A. Patina, by D. G. Zamolodchikov, and by E. V. Venitsianov and co-authors. Calculations by Patina’s method involve two attributes - the average concentration of a chemical element for the period under review and the standard deviation. Calculations by the method of D.G. Zamolodchikov were based on the upper and lower quartiles of the distribution. The method of E.V. Venitsianov and co-authors employs three attributes - the sample size, the upper quartile of the distribution, and the standard deviation for the quantile of about 0.75. Proceeding from the principle of sanitary maximalism, we argue that the optimal method for calculating metal MPCREGs is the method suggested by E. V. Venitsianov and co-authors. The regional maximum permisslbe concentrations of metals in Lake Pskovskoye proved to tightly correlate with their clarke numbers in the earth’s crust.","PeriodicalId":33861,"journal":{"name":"Transactions of the Karelian Research Centre of the Russian Academy of Sciences","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135167085","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}
Inorganic nitrogen compounds in wastewater are a serious problem for aquatic ecosystems and various industries, including mining. These compounds can enter the wastewater of quarries when explosives containing ammonium nitrate are used, resulting in environmental damage, water pollution, human illnesses and fines for companies that exceed binding pollution limits. Biological methods are widely used to remove nitrogen from wastewater, but their efficacy in northern regions of Russia is limited by unfavorable climatic conditions, which inhibit the growth of organisms. Therefore, it is crucial to develop new techniques to remove nitrogen compounds from wastewater. The aim of this study was to investigate the ability of Chlorella algae grown on nitrogen-free medium to recycle nitrogen compounds from mining wastewater, using Karelsky Okatysh JSC open pit water as an example. A special nitrogen-free culture medium was prepared for the experiments, on which the algae were grown before inoculation. The concentration of algal biomass was estimated by the colorimetric method, and the concentration of ammonium and nitrite in the water was estimated by the ion-selective method. As a result, a special algae culture medium without nitrogen sources was tested. Due to such conditioning of algae on the new medium the cultivation of algae in wastewater in the experiment was successful, providing 94% removal of ammonium and 96% removal of nitrates from wastewater. These results indicate the development of a technology for wastewater treatment to remove inorganic nitrogen using microalgae of the genus Chlorella has good prospects
{"title":"The possibility of using Chlorella algae to reduce the mining industry load on a Karelian lake-river system","authors":"Глеб Андревич Щеглов, Gleb Shcheglov","doi":"10.17076/lim1789","DOIUrl":"https://doi.org/10.17076/lim1789","url":null,"abstract":"Inorganic nitrogen compounds in wastewater are a serious problem for aquatic ecosystems and various industries, including mining. These compounds can enter the wastewater of quarries when explosives containing ammonium nitrate are used, resulting in environmental damage, water pollution, human illnesses and fines for companies that exceed binding pollution limits. Biological methods are widely used to remove nitrogen from wastewater, but their efficacy in northern regions of Russia is limited by unfavorable climatic conditions, which inhibit the growth of organisms. Therefore, it is crucial to develop new techniques to remove nitrogen compounds from wastewater. The aim of this study was to investigate the ability of Chlorella algae grown on nitrogen-free medium to recycle nitrogen compounds from mining wastewater, using Karelsky Okatysh JSC open pit water as an example. A special nitrogen-free culture medium was prepared for the experiments, on which the algae were grown before inoculation. The concentration of algal biomass was estimated by the colorimetric method, and the concentration of ammonium and nitrite in the water was estimated by the ion-selective method. As a result, a special algae culture medium without nitrogen sources was tested. Due to such conditioning of algae on the new medium the cultivation of algae in wastewater in the experiment was successful, providing 94% removal of ammonium and 96% removal of nitrates from wastewater. These results indicate the development of a technology for wastewater treatment to remove inorganic nitrogen using microalgae of the genus Chlorella has good prospects","PeriodicalId":33861,"journal":{"name":"Transactions of the Karelian Research Centre of the Russian Academy of Sciences","volume":"55 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135167802","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}
Юлия Сергеевна Новикова, Павел Александрович Рязанцев, Юрий Александрович Дворников, Надежда Вадимовна Двоеглазова, Алексей Владимирович Толстиков, Мария Николаевна Игнатьева, Iuliia Novikova, Pavel Ryazantsev, Yury Dvornikov, Nadezhda Dvoeglazova, Alexey Tolstikov, Maria Ignatieva
As part of the 2nd practice school for polar limnologists in Apatity, at the research station "Tietta" of the Kola Scientific Center of the Russian Academy of Sciences, participants obtained basic ground-penetrating radar (GPR) survey skills to solve limnology problems. GPR survey was carried out on the ice-covered Imandra Lake to study parameters of ice and bottom sediments in spatial section. Performing manual measurements and georadar surveys of ice determined the snow-cover thickness, white and crystalline ice layers. As a result of the GPR survey, the bottom morphology and depth of lithological boundaries were determined. The reliability of the depth determination was confirmed by CTD-measuring.
{"title":"Survey of ice-cover structure and sediment parameters of lake Imandra by ground-penetrating radar","authors":"Юлия Сергеевна Новикова, Павел Александрович Рязанцев, Юрий Александрович Дворников, Надежда Вадимовна Двоеглазова, Алексей Владимирович Толстиков, Мария Николаевна Игнатьева, Iuliia Novikova, Pavel Ryazantsev, Yury Dvornikov, Nadezhda Dvoeglazova, Alexey Tolstikov, Maria Ignatieva","doi":"10.17076/lim1799","DOIUrl":"https://doi.org/10.17076/lim1799","url":null,"abstract":"As part of the 2nd practice school for polar limnologists in Apatity, at the research station \"Tietta\" of the Kola Scientific Center of the Russian Academy of Sciences, participants obtained basic ground-penetrating radar (GPR) survey skills to solve limnology problems. GPR survey was carried out on the ice-covered Imandra Lake to study parameters of ice and bottom sediments in spatial section. Performing manual measurements and georadar surveys of ice determined the snow-cover thickness, white and crystalline ice layers. As a result of the GPR survey, the bottom morphology and depth of lithological boundaries were determined. The reliability of the depth determination was confirmed by CTD-measuring.","PeriodicalId":33861,"journal":{"name":"Transactions of the Karelian Research Centre of the Russian Academy of Sciences","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135167803","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}
Дина Сергеевна Дудакова, Мария Денисовна Петухова, Анна Дмитриевна Старухина, Dina Dudakova, Maria Petukhova, Anna Starukhina
{"title":"Features of diel migrations of Gmelinoides fasciatus (Stebbing, 1899) amphipods in the littoral zone of the Lake Ladoga skerries region","authors":"Дина Сергеевна Дудакова, Мария Денисовна Петухова, Анна Дмитриевна Старухина, Dina Dudakova, Maria Petukhova, Anna Starukhina","doi":"10.17076/lim1706","DOIUrl":"https://doi.org/10.17076/lim1706","url":null,"abstract":"","PeriodicalId":33861,"journal":{"name":"Transactions of the Karelian Research Centre of the Russian Academy of Sciences","volume":"64 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135169214","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}
Microbiological assessment of the water quality in the mouth of the Kazanka River (Tatarstan Republic) was carried out in the summer of 2021. The total numbers of bacterioplankton, saprophytic, oligotrophic, denitrifying and nitrifying bacteria were determined. The water is classified as “slightly polluted” and “polluted”, i. e. quality class II-III, by all indicators. Bacterioplankton remained highly abundant throughout the study period. In June, oligotrophic bacteria outnumbered saprophytic ones, but in the end of the summer, saprophytic bacteria turned into the dominant group, pointing to water pollution and organic matter accumulation. Nitrifying bacteria were more abundant than denitrifying bacteria in the river mouth ecosystem, which indicates an active ammonium nitrogen mineralization process
{"title":"Assessment of the Kazanka River mouth water quality by microbiological indicators","authors":"Ольга Владимировна Морозова, Olga Morozova","doi":"10.17076/lim1761","DOIUrl":"https://doi.org/10.17076/lim1761","url":null,"abstract":"Microbiological assessment of the water quality in the mouth of the Kazanka River (Tatarstan Republic) was carried out in the summer of 2021. The total numbers of bacterioplankton, saprophytic, oligotrophic, denitrifying and nitrifying bacteria were determined. The water is classified as “slightly polluted” and “polluted”, i. e. quality class II-III, by all indicators. Bacterioplankton remained highly abundant throughout the study period. In June, oligotrophic bacteria outnumbered saprophytic ones, but in the end of the summer, saprophytic bacteria turned into the dominant group, pointing to water pollution and organic matter accumulation. Nitrifying bacteria were more abundant than denitrifying bacteria in the river mouth ecosystem, which indicates an active ammonium nitrogen mineralization process","PeriodicalId":33861,"journal":{"name":"Transactions of the Karelian Research Centre of the Russian Academy of Sciences","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135167086","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}
Ксения Владимировна Титова, Наталья Михайловна Кокрятская, Сергей Сергеевич Попов, Ольга Юрьевна Морева, Альберт Владимирович Брагин, Ksenia Titova, Natalia Kokryatskaya, Sergey Popov, Olga Moreva, Albert Bragin
During fieldwork in March 2022 water samples were taken from three lakes: Maselgskoye, Pezhikherie
{"title":"Studying the process of sulfate reduction in the water of lakes in the Kenozersky National Park","authors":"Ксения Владимировна Титова, Наталья Михайловна Кокрятская, Сергей Сергеевич Попов, Ольга Юрьевна Морева, Альберт Владимирович Брагин, Ksenia Titova, Natalia Kokryatskaya, Sergey Popov, Olga Moreva, Albert Bragin","doi":"10.17076/lim1744","DOIUrl":"https://doi.org/10.17076/lim1744","url":null,"abstract":"During fieldwork in March 2022 water samples were taken from three lakes: Maselgskoye, Pezhikherie","PeriodicalId":33861,"journal":{"name":"Transactions of the Karelian Research Centre of the Russian Academy of Sciences","volume":"10 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135168195","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}
Михаил Николаевич Кожин, Наталья Руслановна Кириллова, Ксения Борисовна Попова, Анна Владимировна Разумовская, Евгений Александрович Боровичев, Kozhin Mikhail, Natalya Kirillova, Ksenia Popova, Anna Razumovskaya, Evgeny Borovichev
Data on 124 findings of 25 regionally red-listed species of vascular plants collected in the Tersky and Lovozersky Districts of Murmansk Region in areas with Pomor settlements and in Pomor fishing grounds are reported. The surveys covered the abandoned villages of Porya Guba and Kuzreka, villages Kashkarantsy, Chavanga and Sosnovka, as well as areas along the Umba-Varzuga road between Creeks Ludoshny and Kashkarantsky, seacoast stretch from Tochilennyi Creek area to Lodochnyi Creek, from Krivoy Creek area to the Rombach River and from the Pulonga River to Krasnyi Nos Cape near the mouth of the Ponoy River. New localities were detected for 8 very rare species: Armeria scabra, Carex recta, Comastoma tenellum, Cotoneaster antoninae, Cotoneaster laxiflorus, Dactylorhiza incarnata, Pilosella erratica, and Helianthemum arcticum . The latter was found in the region for the second time. Seven species were registered within the boundaries of the nature monument Ametisty mysa Korabl': Cotoneaster antoninae, C. cinnabarinus, C. laxiflorus, Dianthus arenarius, Pilosella erratica, Sedum acre , and Thymus subarcticus.
{"title":"NEW DATA ON THE DISTRIBUTION OF RED-LISTED VASCULAR PLANTS IN MARINE FISHING AREAS IN MURMANSK REGION","authors":"Михаил Николаевич Кожин, Наталья Руслановна Кириллова, Ксения Борисовна Попова, Анна Владимировна Разумовская, Евгений Александрович Боровичев, Kozhin Mikhail, Natalya Kirillova, Ksenia Popova, Anna Razumovskaya, Evgeny Borovichev","doi":"10.17076/bg1766","DOIUrl":"https://doi.org/10.17076/bg1766","url":null,"abstract":"Data on 124 findings of 25 regionally red-listed species of vascular plants collected in the Tersky and Lovozersky Districts of Murmansk Region in areas with Pomor settlements and in Pomor fishing grounds are reported. The surveys covered the abandoned villages of Porya Guba and Kuzreka, villages Kashkarantsy, Chavanga and Sosnovka, as well as areas along the Umba-Varzuga road between Creeks Ludoshny and Kashkarantsky, seacoast stretch from Tochilennyi Creek area to Lodochnyi Creek, from Krivoy Creek area to the Rombach River and from the Pulonga River to Krasnyi Nos Cape near the mouth of the Ponoy River. New localities were detected for 8 very rare species: Armeria scabra, Carex recta, Comastoma tenellum, Cotoneaster antoninae, Cotoneaster laxiflorus, Dactylorhiza incarnata, Pilosella erratica, and Helianthemum arcticum . The latter was found in the region for the second time. Seven species were registered within the boundaries of the nature monument Ametisty mysa Korabl': Cotoneaster antoninae, C. cinnabarinus, C. laxiflorus, Dianthus arenarius, Pilosella erratica, Sedum acre , and Thymus subarcticus.","PeriodicalId":33861,"journal":{"name":"Transactions of the Karelian Research Centre of the Russian Academy of Sciences","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135738725","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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