AGRIS - 

Data provenance by Country

2024

Bayramov, A. | Maharramov, M.

For the first time generalized data on hydrofauna of the First Batabat reservoir are given. In the fauna 6 species of zooplanktonic organisms are revealed, with absolute predominance of large predatory copepod Hemidiaptomus rylovi Charin, 1928. The mean body length of fertilized egg-bearing female crustaceans was 3.6 mm to the furca and 5.1 mm to the tip of the telson. In the ecosystem, Daphnia pulex Leydig, 1860 typically produces its last parthenogenetic generation in September. In the macrozoobenthos of the reservoir, 40 species of macrobenthic organisms were found, with the Heteroptera (9 species) and the Chironomidae family (9 species) predominating in terms of the number of species. According to all its ecological indicators Gammarus lacustris (Sars, 1863) is the dominant bottom organism of the ecosystem. The maximum number of population individuals — 346 spec./m2 and biomass — 2804 g/m2 was calculated in the last decade of June 2017. Being a detritophage with a wide food spectrum, individuals of the higher crayfish have an abundant food base in the reservoir. The first Batabat reservoir located in the high mountainous region of the autonomous republic and having favorable natural and geographical conditions is characterized by high biological productivity.

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Publishing center Science and Practice - Russian Federation

2023

Yermolaeva, Nadezhda I. | Fetter, Gleb V. | Zarubina, Eugenia Yu. | Tropina, Elena F.

Based on natural materials collected by the authors in 2020-2022, data on zooplankton in the watercourses of the “Krasnoyarsk Stolby” National Park are summarized. A list of 85 species is given: 38 species and subspecies of rotifers, 26 species of cladocerans, 11 species of cyclops, and 10 species of harpacticidae. For the first time, 24 species of rotifers, 10 species of cladocerans, 14 species of copepods were discovered or identified to species.

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Altai State University - Russian Federation

2023

Tyurin, V.G. | Rodionova, N.V. | Biryukov, K.N. | Obukhov, I.L. | Avylov, Ch.K.

Livestock wastes can be a source of both valuable fertilizers and substances that pollute the environment. There was studied the purification process of pig manure wastes in natural biological systems, which took place during the warm season at an air temperature above 5 deg. C for 180 days. The sewage treatment system was developed on the principle of a cascade of anaerobic and aerobic tanks. A number of indicators characterizing the disposal process and the level of waste removal were determined. In the treated sewage water accumulator, the suspended materials content was 40 mg/L, ammonia nitrogen of 21 mg/L, biological oxygen consumption for 5 days was 13 mg/L. The corresponding indicators of the non-treated wastewater were equal to 8360, 996 and 5170 mg/L. The biopond cascade ecosystem was not stable and strongly depended on the temperature conditions of the external environment. The peak of biomass and zooplankton population in ponds was observed in June, then as the concentration of ammonium nitrogen and organic substances increased, these indicators decreased. Zooplankton disappeared in algal ponds by mid-July, in crustacean ponds - by mid-August. In fish ponds the self-cleaning capacity noticeably decreased during the season; degradation of the ecosystem was observed. In September, with the slowing down of biological processes with a decrease in water temperature and because of the rise of organic matter from silts and the death of phytoplankton, a secondary increase in the content of polluting organic substances began, that is, the water in it became dirtier than that supplied from crustacean ponds. The data obtained should be taken into account when monitoring the operation of sewage treatment facilities and when improving the technology of biological wastewater treatment. | Животноводческие стоки могут быть источником как ценных удобрений, так и веществ, загрязняющих окружающую среду. Изучали процесс очистки навозных свиноводческих стоков в естественных биологических системах, который проходил в теплый период года при температуре воздуха выше 5 град. С в течение 180 сут. Система очистки стоков была построена по принципу каскада анаэробных и аэробных емкостей. Определяли ряд показателей, характеризующих процесс переработки и степень очистки сточных вод. В накопителе очищенных сточных вод содержание взвешенных веществ составило 40 мг/л, аммиачного азота 21 мг/л, биологическое потребление кислорода за 5 сут - 13 мг/л. Соответствующие показатели исходных сточных вод были равны 8360, 996 и 5170 мг/л. Экосистема каскада биопрудов не отличалась стабильностью и сильно зависела от температурных условий внешней среды. Пик биомассы и численности зоопланктона в прудах наблюдали в июне, затем по мере увеличения концентрации аммонийного азота и органических веществ происходило снижение этих показателей. В водорослевых прудах зоопланктон исчез к середине июля, в рачковых - к середине августа. В рыбных прудах способность к самоочищению заметно падала в течение сезона, наблюдалась деградация экосистемы. В сентябре с замедлением биологических процессов при понижении температуры воды и из-за подъема органики из илов и отмирания фитопланктона начинался вторичный рост содержания загрязняющих органических веществ, то есть вода в нем становилась грязнее, чем подаваемая из рачковых прудов. Полученные данные необходимо учитывать при контроле за работой очистных сооружений и при совершенствовании технологии биологической очистки стоков.

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Central Scientific Agricultural Library - Russian Federation

2023

Vesnina, Lyubov’ V. | Bezmaternykh, Dmitry M.

The paper investigates the effects of natural environmental factors on the long-term (2000–2020) and seasonal (April–October) dynamics of zooplankton in the hypergaline Lake Kulundinskoye, located in the Kulunda steppe of Altai Krai, Russia. Sixteen key indicators of zooplankton structure, including abundance and biomass of major taxonomic groups such as Rotifera, Cladocera, Copepoda, and Anostraca, as well as individual stages of a life cycle and sex ratio in Artemia population, were studied in relation to 17 hydrophysical and hydrochemical indicators such as temperature, density, pH, total salinity, hardness, alkalinity, and other parameters. Monthly data for 2017–2020 and average annual data for 2000–2020 were analyzed to identify the impact of environmental factors on zooplankton structure. The study also examined the influence of these factors on the Artemia crustacean population, which dominates the zooplankton in this lake. The hydrophysical and hydrochemical regime of Lake Kulundinskoye can vary significantly from year to year, which affects the zooplankton indicators. Statistical analysis showed that monthly hydrophysical and hydrochemical data are more reliable than averaged data for the research period (April-October) in determining the impact of environmental factors on zooplankton structure. The results indicate that the changes in zooplankton structure are mainly due to the stimulating effect of increased salinity on the Artemia population and its depressing influence on other taxa. The long-term dynamics of zooplankton is characterized by a complex cyclicity of water salinity and productivity of the Artemia population, which is influenced by periodic changes in the moisture content of the lake catchment.

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Altai State University - Russian Federation

2022

Мелихов, В.В.

Современное комплексное использование водных ресурсов в Российской Федерации сложно представить без прудового рыбоводства. Управление экосистемой прудов и поддержание их на высокопродуктивном уровне можно достичь за счет установления определенных взаимоотношений между основными гидробионтами, оперативным подстраиваем пищевых цепочек под хозяйственные цели, регулярным наблюдением за качеством воды и биоресурсов. Антропогенное воздействие приводит к высокой концентрации водоемах азота, фосфора, хлорсодержащих веществ, являющиеся основой питания сине-зеленых водорослей, размножение которых приводит к эффекту цветения водоемов. С учетом возрастающей антропогенной нагрузки ключевыми требованиями к организации мониторинга становятся: мобильность, оперативность и автоматическая обработка данных. Целью исследования является формирование концептуальных подходов к поддержаниювысокой продуктивности рыбоводных водоемов через проведение мониторинга и альголизацию. Материал и методика. Объектом исследования являются рыбоводные пруды ООО Прибой (Волгоградская область). Информационной базой послужили материалы по организации биосферного мониторинга, применению биотехнологий, а также экспедиций на рыбоводные пруды. Представлены результаты испытаний автоматизированного плавсредства для мониторинга водоемов, проведения альголизации водоемов. Выводы. Теоретическая значимость исследования заключается в обосновании концептуальных подходов к проведению биосферного мониторинга, использованию технических средств, позволяющих получать результата мониторинга в режиме онлайн; практическая –в увеличении доказательной базы применения Chlorellavulgaris в оздоровлении прудовых водоемов.

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Cifra Ltd - Russian Federation

2022

Burmistrova, Olga

Long-term data sets on various ecosystem parameters serve as the basis for environmental monitoring. Time series analysis is used to identify the structure of dynamic series and their prediction. The demographic characteristics of zooplankton are well suited to analyze seasonal and interannual changes in ecosystems. Since the dynamics of species richness and river flow are often interdependent, we studied zooplankton biodiversity in the upper reaches of the Ob River in relation to the phases of the water regime. A six-year sampling of zooplankton was performed from surface water from the Ob River at two stations near the city of Barnaul. In total, 203 species and forms of zooplankton were detected. In all phases of the water cycle, Rotifera dominated in species number. To analyze the species diversity of zooplankton, we used 20 indices, of which 10 were not random on both coasts and could be used in monitoring. The species diversity of zooplankton in a sample, according to Margalef and Menhinick indices, was the highest during the recession of the second flood wave. The generalized measures of diversity (Williams polydominance and Shannon indices, and Fischer alpha) showed their maximum during the recession of the second wave of high water and in the summer low water period. Statistically significant declines in trends of some species diversity are evidence of small changes in the structure of the zooplankton. Time series analysis in the assessment of community biodiversity helps to select indices suitable for predicting ecosystem state, as well as to identify related changes in the community.

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Altai State University - Russian Federation

2021

Медведева, Л.Н.

В статье поднимаются вопросы состояния природной воды в Цимлянском водохранилище, предлагается биотехнология, направленная на сохранение биологических ресурсов и улучшение качества воды. Основными факторами, влияющими на состояние природной воды, являются естественные биологические процессы в водоемах и активная хозяйственная деятельность человека. Цимлянское водохранилище в течение многих лет испытывает высокую антропогенную нагрузку, постепенно теряет способность к самовосстановлению. Прогретый и обогащенный органическими, минеральными веществами поверхностный слой воды создает благоприятные условия для жизнедеятельности проблемных биогенов, вызывает бурное развитие синезеленых водорослей. Приостановить деградацию рыбохозяйственного водоема – Цимлянского водохранилища с уникальными природными комплексами позволяет биоремедиация. Разработанная в ФГБНУ ВНИИОЗ (Волгоград, Россия) биотехнология – вселение в заливы Цимлянского водохранилища штамма Chlorella vulgaris ИФР № C 111 позволяет улучшить санитарно-гигиенические показатели воды, снизить «эффект цветения», улучшить видовой состав биологических водных и прибрежных ресурсов.

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Cifra Ltd - Russian Federation

2021

Louppova, N.

The abundance and biomass dynamics of the jellyfish Aurelia aurita and ctenophores-invadors Mnemiopsis leidyi and Beroe ovata in 2019 on the northeastern shelf of the Black Sea were studied. Data on the maxima of reproduction of each species of gelatinous macrozooplankton were obtained, as well as conclusions on the dynamics of individuals growth in populations and average life expectancy were drawn. | Исследована динамика численности и биомассы медузы Aurelia aurita и гребневиков-вселенцев Mnemiopsis leidyiи Beroe ovata в 2019 г. на северо-восточном шельфе Черного моря. Получены данные о максимумах размножения каждого вида студенистого макрозоопланктона, а также сделаны выводы о динамике роста особей в популяциях и средней продолжительности жизни.

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Publishing center Science and Practice - Russian Federation

2021

Kirilenko, E.V. | Shemonaev, E.V. | Rakhuba, A.V. | Selezneva, A.V. | Tikhonova, L.G.

The morphometry characteristics and the food ration of Perccottus glenii in the Podstepnovka River in the Volga district of the Samara Region are presented for the first time. Comparative analysis of the studied traits of Perccottus glenii yearlings from Podstepnovka River and Krugloe Lake (Mordovo floodplain of the Saratov Reservoir) are given. The insignificant dif‑ferences in the morphometry of organs responsible for locomotor functions were revealed. The diet of Perccottus glenii yearlings in Podstepnovka river and in Krugloe lake during the observation period included insect larvae of Chironomidae, cladocerans and copepods. The basis food of Perccottus glenii in the studied lake and river is zooplankton

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Russian Federal Research Institute of Fisheries and Oceanography - Russian Federation

2021

Naydenko, S.V. | Khen, G.V. | Figurkin, A.L. | Kuznetsova, N.A. | Starovoytov, A.N. | Somov, A.A. | Shebanova, M.A.

Several significant forecast failures occurred during 2020 pink salmon (Oncorhynchus gorbuscha) fishing season in Russia. The major crush was observed for eastern Kamchatka. Precarious harvest was also observed for some Alaskan stocks. This paper represents an opposing representation of environmental and feeding condition during pink salmon offshore migration and wintering in 2019–2020 which were considered as unfavorable according to several authors. A comparison of 2019 prey composition and feeding intensity with long-term data showed that feeding conditions were sufficient. The feeding conditions in the fall of 2019 could not be the reason for the low returns of pink salmon in 2020. Analysis of environmental conditions (configuration of the western subarctic gyre, temperature distribution, position of isotherms, ecology and abundance of zooplankton species) demonstrated no significant difference with previous years. Therefore, in our opinion, the dramatic thermal regime shift during the winter 2020 in the North Pacific which caused structural changes biomass decrease in zooplankton communities and, consequentially, deterioration of the feeding conditions, seems quite doubtful

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Russian Federal Research Institute of Fisheries and Oceanography - Russian Federation