Видання зареєстровані авторами шляхом самоархівування
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Item Шляхи підвищення стресостійкості річкових екосистем(Сумський державний університет, 2025) Кузьміна, Тетяна Миколаївна; Kuzmina, Tetiana Mykolaivna; Щербаченко, В.; Бабко, Р.Більшість річок в Україні характеризуються значним рівнем штучної трансформації їх долин і русел, що негативно вплинуло на структурне різноманіття їх біоценозів і суттєво знизило стесостійкість їх екосистем. Найбільш суттєвих втрат екосистеми річок зазнали внаслідок змін гідрологічного режиму, спричинених створенням руслових водосховищ, спрямленням і поглибленням русел, осушенням заплав. Ці зміни небезпечні тим, що їх негативні наслідки відтерміновані у часі. Вони виявляються поступово у замуленні русел, погіршенні якості води, зменшенні водності, втраті рибних запасів і, зрештою, деградації гідробіоценозів. Так, зникнення значної кількості малих річок, що відбувається в Україні з кінця 20 ст., не є наслідком зміни клімату, а прямим результатом тотальної осушувальної меліорації і масового створення руслових ставків і водосховищ. Важливим наслідком згаданих змін морфології і водного режиму річок є зниження стійкості гідроекосистем до зовнішніх стресуючих факторів, наприклад таких, як скиди забруднюючих речовинItem Diversity of Peritricha (Ciliophora) in Activated Sludge Depending on the Technology of Wastewater Treatment(Polish Society of Ecological Engineering, 2024) Babko, R.; Кузьміна, Тетяна Миколаївна; Kuzmina, Tetiana Mykolaivna; Pliashechnyk, V.; Zaburko, J.; Szulżyk-Cieplak, J.; Łagód, G.The representation of Peritricha ciliates was studied in the activated sludge of two wastewater treatment plants (WWTP), one of which operates using a technology that includes alternating aerobic, anoxic and anaerobic condi tions in bioreactors (Lublin, Poland), and the other – only aerobic conditions (Sumy, Ukraine). During the study, 14 Peritricha species were identified in the WWTP Lublin, and 13 species were identified in the WWTP Sumy. The similarity of species lists was 81.5% (Sørensen index). On the basis of on the similarity and taking into account the occurrence rate (≥ 60%), a common group of Peritricha species characteristic of the activated sludge from these two types of treatment facilities was identified, which includes 4 species of colonial Peritricha: Carchesium polypinum, Epistylis coronata, Epistylis longicaudatum and Opercularia articulata, and also 4 species of solitary Peritricha: Vorticella aquadulcis, Vorticella convallaria, Vorticella infusionum and Vorticella microstoma. Despite the very high similarity in species composition, statistical analysis of the population structure of Peritricha showed a clear separation of two WWTPs with different wastewater treatment technologies. If there is a significant simi larity in the species composition of Peritricha, the species, based on their abundance and occurrence, are divided into two groups, focused on different technological schemes. The population structure of Peritricha responds to the changes in purification technology, showing the changes not so much in species composition as in their quantita tive structure. The differences in bioreactor conditions and increased effluent treatment efficiency demonstrated by the WWTP Lublin result in differences in Peritricha species structure, which are reflected in higher Peritricha abundance in WWTP Lublin compared to WWTP Sumy.Item Bioindication of Surface Water Supported by Automatic Image Analysis Using Deep Learning Neural Network – Cyclotella Case Study(Polish Society of Ecological Engineering, 2024) Walo, M.; Majerek, D.; Кузьміна, Тетяна Миколаївна; Kuzmina, Tetiana Mykolaivna; Łagód, G.Bioindicative methods involving the identification and counting of indicator organisms (e.g. algae) are widely used methods in the assessment of surface water quality. For this reason, the purpose of this paper was automatic image analysis using the YOLO v8 deep learning neural network, directed at the detection of freshwater algae Cyclotella. Changes in the number of these organisms can indicate changes in the water quality and the trophic status of the reservoir, which makes automating their detection an important task. Traditionally, the detection and counting of objects in microscope images was done manually, but by using machine learning and especially neural networks, the process can be automated. YOLO (You Only Look Once) is an example of a network that, after proper training and validation, is capable of performing image detection in real time. In this study, the Roboflow object tagging tool was used to create a dataset divided into training, validation and test sets. Training of the network, validation of the model and evaluation of its metrics were carried out. The paper presents the obtained metrics of the YOLO v8 network on the validation set, such as Accuracy = 0.960, Precision = 0.964, Recall = 0.995. The presented results confirm the effectiveness of the applied method in automatic analysis of microscopic images containing algae and thus the high application potential of the method in supporting bioindication studies of surface water quality.Item Ratio of abundances of ciliates behavioral groups as an indicator of the treated wastewater impact on rivers(PLOS, 2022) Babko, R.; Pliashechnyk, V.; Zaburko, J.; Danko, Y.; Кузьміна, Тетяна Миколаївна; Кузьмина, Татьяна Николаевна; Kuzmina, Tetiana Mykolaivna; Czarnota, J.; Szulżyk-Cieplak, J.; Łagód, G.A method for assessing the degree of impact of wastewater treatment plant discharge on receiving rivers was proposed, based on the structural indicators of the population of ciliated protozoa. It was shown that the ratio of attached, crawling and free-swimming forms in bottom sediments changes under the influence of discharge. In the points subject to organic pollution, the share of attached filter-feeding bacteriovorous ciliates increases in the assemblage of ciliated protozoa. The proposed Attached Form Index (AFI) takes this ratio into account. The use of AFI makes it possible to assess the restructuring of the assemblage of ciliated protozoa under the influence of point sources of pollution, to establish a zone of negative influence of runoff, to assess the degree of restoration of the aquatic ecosystem, as the influence of the pollution source weakened.Item Spatial Distribution of Ciliate Assemblages in a Shallow Floodplain Lake with an Anaerobic Zone(MDPI, 2022) Babko, R.; Кузьміна, Тетяна Миколаївна; Кузьмина, Татьяна Николаевна; Kuzmina, Tetiana Mykolaivna; Danko, Y.; Pliashechnyk, V.; Szulżyk-Cieplak, J.; Lazuka, E.; Zaburko, J.; Lagod, G.The spatial distribution of ciliate assemblages was studied in a shallow floodplain lake with a sharp division of space by oxygen conditions. The surface zone occupied by the “carpet” of Lemna trisulca and L. minor was characterized by a large daily amplitude of oxygen content with periodic exceeding of 100% of saturation; the underlying water layer was characterized by microaerobic conditions throughout most of the year, with seasonal deviations towards oxygen-free conditions (in winter and mid-summer) or increased oxygen content (before freezing and after ice melt); stable oxygen-free conditions were maintained in the bottom layer of water and at the bottom of the lake. There were 111 species of ciliated protozoa recorded in the lake. The ciliated protozoa were clearly structured and formed three almost non-overlapping assemblages in terms of species composition, which retained their isolation during all seasons of the year. On the basis of the analysis performed using the R indicspecies package, species of ciliated protozoa were identified as indicators of conditions with different oxygen regimes, which are determined by the level of organic pollution and the distribution of photosynthetic organisms.Item Quantitative study of activated sludge population structure(IOP Publishing, 2021) Babko, R.; Pliashechnyk, V.; Кузьміна, Тетяна Миколаївна; Кузьмина, Татьяна Николаевна; Kuzmina, Tetiana Mykolaivna; Zaburko, J.; Danko, Y.; Łagód, G.A quantitative study of the population structure of activated sludge is an important component of biological wastewater treatment control. However, in the studying of live samples of the activated sludge, some complications arise, in particular, associated with the relatively short time of the subsample suitability. A subsample is the part of the sample that is placed on a glass slide and in which organisms are counted. The issue of optimization of counts of organisms with large amplitude of population density is considered. The results of counting ciliated protozoa in activated sludge were described. The samples were counted in 45 sub-samples of 25 µl each. An average of 10 counts was required to achieve high reliability in determining population densities with more than or equal to 1 specimen per 25 µl in sub-samples. For small population densities (less one specimen per 25 µl) of free-swimming, crawling, and sessile ciliates, 30 counts are necessary. When the density of colonial protozoan populations is established, the number of counts should be increased to 40, especially when colonies with significant differences in the number of zooids are found.Item Oxygen Gradients and Structure of the Ciliate Assemblages in Floodplain Lake(MDPI, 2020) Babko, R.; Кузьміна, Тетяна Миколаївна; Кузьмина, Татьяна Николаевна; Kuzmina, Tetiana Mykolaivna; Danko, Y.; Szulzyk-Cieplak, J.; Lagod, G.This paper presents the results of studies on the structure of the ciliate population in a freshwater lake. The classification of the ciliated communities based on the analysis of the distribution of ciliate population density in the lake along the oxygen gradients, taking into account their oxygen preferences, was proposed. It was shown that the distribution of ciliated protozoa in the space of a reservoir is determined not by such spatial units as the water column, bottom, and periphytal, but by the oxygen gradients. Four types of habitats with different oxygen regimes were distinguished: With stably high oxygen concentration, stably low oxygen concentration, stably oxygen-free conditions, and conditions with a high amplitude of diurnal oxygen variations. The location of these habitats in the space of the lake and their seasonal changes were determined. On the basis of the quantitative development of ciliate populations, zones of optima and tolerance ranges of some ciliate species in the oxygen gradient were established. The oxygen preferences were established for the species from four distinguished assemblages: Microoxyphilic, oxyphilic, euryoxyphilic, and anoxyphilic (anaerobic). The presence or the absence of a certain type of assemblage in the reservoirs depends solely on the parameters of the oxygen gradients. The diversity of the ciliated protozoa in water bodies also depends on the stability and diversity of the oxygen gradients.Item Assessment of wastewater treatment plant effluent impact on the ecosystem of the river on the basis of the quantitative development of ciliated protozoa characteristic of the aeration tank(IWA Publishing, 2020) Babkoв, R.; Pliashechnyk, V.; Кузьміна, Тетяна Миколаївна; Кузьмина, Татьяна Николаевна; Kuzmina, Tetiana Mykolaivna; Danko, Y.; Szulzyk-Cieplak, J.; Lagod, G.The work is devoted to the task of simplifying the assessment of the effect of effluents from treatment facilities on the river hydrobiocenosis. The studies were carried out on the mountain river Uzh (Uzhgorod, Ukraine). Our approach to assessing the impact of waste treatment facilities on the river receiver is based on the estimate of the similarity of species composition and quantitative characteristics of populations of organisms from the aerotank and from the river. It is shown that the quantitative development of populations of species of ciliates from the aeration tank is a good indicator for assessing the degradation of organic matter coming with wastewater. The use of qualitative and quantitative characteristics of the protozoa from the wastewater treatment plant as a criterion for assessing the quality of the environment in the area of wastewater discharge showed their representativeness and effectiveness. The use of a limited number of species makes it possible to conduct an express assessment of the effect of effluents on receiving reservoirs for specialists working with activated sludge in the laboratories of treatment facilities.Item Contribution of prokaryotes and eukaryotes to CO2 emissions in the wastewater treatment process(PeerJ, 2020) Jaromin-Glen, K.; Babko, R.; Кузьміна, Тетяна Миколаївна; Кузьмина, Татьяна Николаевна; Kuzmina, Tetiana Mykolaivna; Danko, Y.; Lagod, G.; Polakowski, C.; Szulżyk-Cieplak, J.; Bieganowski, A.Reduction of the greenhouse effect is primarily associated with the reduction of greenhouse gas (GHG) emissions. Carbon dioxide (CO2) is one of the gases that increases the greenhouse effect - it is responsible for about half of the greenhouse effect. Significant sources of CO2 are wastewater treatment plants (WWTPs) and waste management, with about 3% contribution to global emissions. CO2 is produced mainly in the aerobic stage of wastewater purification and is a consequence of activated sludge activity. Although the roles of activated sludge components in the purification process have been studied quite well, their quantitative contribution to CO2 emissions is still unknown. The emission of CO2 caused by prokaryotes and eukaryotes over the course of a year (taking into account subsequent seasons) in model sequencing batch reactors (SBR) is presented in this study. In this work, for the first time, we aimed to quantify this contribution of eukaryotic organisms to total CO2 emissions during the WWTP process. It is of the order of several or more ppm. The contribution of CO2 produced by different components of activated sludge in WWTPs can improve estimation of the emissions of GHGs in this area of human activity.Item Фактори впливу на стан річки Сумки на території міста Суми(Сумський державний університет, 2017) Кузьміна, Тетяна Миколаївна; Кузьмина, Татьяна Николаевна; Kuzmina, Tetiana Mykolaivna; Спориш, О.О.; Лагуд, Г.; Бабко, Р.В.Річка Сумка – права притока І порядку річки Псел (басейн Дніпра) – за класифікацією, прийнятою у Водному кодексі України, належить до малих річок. Площа її басейну – 385 км2, довжина, згідно з Паспортом [1], становить 29 км, згідно з Екологічним паспортом Сумської області[2] – 38 км. Довжина, визначена за Google maps [3] – 29 км, включно з ставком в с. Новосуханівка, з якого нині витікає Сумка. Між с. Новосуханівка і м. Суми русло Сумки перетинає два ставки і Косівщинське водосховище.
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