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В статье проведены результаты исследования по воздействию солей меди различных концентраций на семена районированных сортов гороха и чечевицы. По результатам лабораторного опыта положительное влияние ионов меди выявлено при концентрациях 1-10 мг/л. Наиболее оптимальная концентрация ионов меди Cu2+ в форме сульфата по разным показателям составила 5-8 мг/л для гороха. В параллельных опытах с семенами чечевицы было установлено, что заметное увеличение длины и массы ростков примерно на 20% наблюдается при концентрациях ионов Cu2+ 5-15 мг/л, в большей степени для хлорида меди, чем для сульфата. А масса корешков более отзывчива при обработке семян растворами 5-10 мг/л ионов Cu2+ в форме хлорида. Оптимальная концентрация хлорида меди в наших опытах с чечевицей соответствовала порядка 5 мг/л Cu2+.

Представлены первые сведения о структуре, биомассе и плотности беспозвоночных донных сообществ ненарушенных природных водотоков заповедника «Комсомольский», протекающих в зоне хвойно- широколиственного леса. Выявлено 334 таксона из 31 систематической группы организмов. Средние показатели плотности бентоса составили 7719 экз./м2, биомассы — 12,8 г/м2. Доминантами являлись Chironomidae и Ephemeroptera по плотности, Gammarus sp. и Mollusca по биомассе. Весной, относительно летнего периода, отмечались низкие значения плотности и биомассы водных беспозвоночных в реках и ручьях в 4,4 и 2,8 раза соответственно. В эпиритрали малой реки максимальной плотности достигали «измельчители», которыми являются Gammarus sp. и многие представители отрядов Plecoptera и Trichoptera, а в метаритрали и гипоритрали плотность «измельчителей» снижалась. Современное экологическое состояние водотоков по составу зообентоса оценивалось как хорошее.

The coastal zone of Laspi Bay (the Crimea, Black Sea) is attractive for the development of recreational activities. It can negatively affect the state of the bay ecosystem and adjacent waters. The aim of this study is to assess the current state of polychaetes inhabiting the loose soils of the littoral and sublittoral areas of Laspi Bay. In 2016–2019 the fauna of polychaetes was studied in the waters of Laspi Bay. Macrozoobenthos were collected on cruises 84, 86, 96, 108 aboard the research vessel Professor Vodyanitsky and in coastal expeditions. 89 samples were taken (19 deep-water, 70 coastal). 45 species of polychaetes were identified. The average abundance of Polychaeta was 2 368 ± 467 ind./m2. The average biomass was 44,128 ± 13,919 g/m2. Terebellides stroemii makes a significant contribution to the formation of these indicators. The ranked series by density index is headed by T. stroemii, Nephtys hombergii and Melinna palmata. The largest abundance of species is noted at a depth of 46 m where the soil is represented by sand and pebbles. The highest number is noted at depths of 93.5–98 m. Prionospio сirrifera makes the main contribution to the total number. The highest biomass is noted at depths of 53.5–58 m. T. stroemii makes the main contribution to the total biomass. In the Laspi Bay waters are recorded characteristic species – P. сirrifera and Micronephthys longicornis. They are found both in shallow waters and at great depths. Rare species found only at one station include 18 polychaete species. The results obtained give an idea of the taxonomic composition of polychaete worms in the waters of Laspi Bay and can be useful for further monitoring of this area.

The composition of zooplankton of freshwater lakes of the Alakol system in the spring-summer period of 2021 was represented by 33 varieties. In oz. Sasykkol the number of taxa did not change by season and amounted to 14 names. In oz. Koshkarkol their number decreased from spring to summer -- from 11 to 6. The biomass of zooplankton of the lake. Sasykkol increased from 1220.17 to 1973.39 mg/m3. In May, the south-eastern region was more productive -1607.01 mg/m3, and in summer -- the north-eastern region -- 2575.24 mg/m3. The level of zooplankton trophicity in the lake. Sasykkol for the spring-summer period corresponded to a moderate class. In oz. Koshkarkol biomass index ranged from 940.12 to 2856.54 mg/m3. On average in the lake's water area, zooplankton corresponded to a «moderate» trophic class. Relative to 2020, the weight of zooplankton biomass of the lake. Sasykkol increased by 73%, in summer -- by 69%. In May, compared with last year's data, the biomass of the lake. Kosh-karkol increased by 65%, and in August -- by 32%. During the observation period since 2017, the productivity of zooplankton of the lake. Sasykkol and Koshkarkol in the spring-summer period corresponded to a moderate class. [ABSTRACT FROM AUTHOR]

The northeast of the Barents Sea (the area between the Franz Josef Land and Novaya Zemlya archipelagos) is one of the little-studied areas characterized by a complex structure of the hydrological regime, bottom relief and bottom sediment structure. This area is characterized by the predominance of brown soils with a large number of foraminifera shells, which affects the species composition and structure of benthic communities. The species composition and quantitative characteristics of polychaetes in the northeastern part of the Barents Sea were analyzed on the basis of material collected in December 2019 during Murmansk Marine Biological Iinstitution expeditions on the r/v Dalnie Zelentsy. Faunal complexes of polychaetes have been identified in the study area depending on environmental conditions (type of bottom sediments, depth, hydrological conditions). In the areas of marginal troughs, the detritophagus Spiochaetopterus typicus dominates in terms of biomass and abundance, forming abundant settlements on soft silty-sandy, silty-clay soils. Low values of biomass and abundance have been noted on brown silts with a large number of foraminifera, dominated by Laonice cirrata. On the slopes of underwater hills, washed more strongly by bottom currents, on rough sandy soils with low nutrient content, the dominance of Nephtys ciliata has been noted. The species phaerodoridium kolchaki sp. n. recently encountered in the Barents Sea has been noted in the study area as well. The obtained data complement information on the species composition of the northeastern part of the Barents Sea and make it possible to trace further changes in the composition and structure of benthic communities.

The item offers the outcomes of a study into the comparative features of some of bacterial concentrates obtained in a conventional manner and granulated cryo-frozen bacterial concentrates. There is a view presented on the features of sublimation drying of bacterial concentrates.

Представлены результаты исследования зообентоса водно-болотных угодий оз. Удыль и 12 его притоков (Нижний Амур, заказник «Удыль») в период летнего паводка 2021 г. Сообщества донных беспозвоночных бассейновых рек и ручьев, за исключением р. Бичи, изучены впервые. Обнаружено, что состав, структура и количественная характеристика зообентоса озера Удыль и лососевой реки Бичи изменились при сравнении с результатами предыдущих исследований 30–40-х и 90-х годов прошлого столетия. В водных объектах заказника выявлен богатый таксономический состав беспозвоночных (19 групп) и невысокие значения плотности и биомассы. Основу зообентоса составляли амфибиотические насекомые (57% от общей плотности и 43% от общей биомассы). Установлено, что в басс. оз. Удыль наибольшими количественными показателями отличались олигохеты и хирономиды. Для определения качества воды использовались биоиндикационные индексы и метрики, широко распространенные в мировой и российской практике (GW, TBI, IB, ND/Nex, NCh/Nex) и в нашей модификации (IPM, TBIM). Показано, что в целом экосистема оз. Удыль и впадающих в него водотоков находится в относительно удовлетворительном состоянии.

Одним из элементов техногенного ландшафта, образованного в результате открытой разработки полезных ископаемых, являются различные водоемы (карьерные озера, подпрудные озера, пруды хвостохранилищ). Целью настоящей работы является изучение разнообразия сообщества планктонных беспозвоночных в водоемах антропогенного генезиса. Гидробиологические исследования техногенных водоемов горнопромышленной территории Юго-Восточного Забайкалья (Шерловогорское олово-полиметаллическое, Спокойнинское вольфрамовое, Жипкошинское сурьмяное, Малокулундинское и Орловское редкометалльные месторождения) проводились впервые. По данным исследований в июне 2021 г. зоопланктон водоемов характеризовался невысоким видовым разнообразием (всего 63 вида) и широким размахом вариаций количественных показателей (численность — 5,89–601,44 тыс. экз./м3, биомасса — 19,79–1447,28 мг/м3). Доминирующий комплекс сообществ зоопланктона различался и слагался преимущественно видами из ротаторной и копеподной фаун.

Recently, in order to assess the quality of water, hydrobiological indicators, in particular various biological characteristics of macroalgae, are widely used along with hydrochemical parameters. Brown alga Fucus vesiculosus due to its ecological plasticity and tolerance to a complex of natural and anthropogenic factors can serve as a model object when studying adaptive reactions of phytocenoses to adverse environmental conditions. The material for the work is the collections of algae during 1999, 2009 and 2019 years within the southern and middle tribes of the Kola Bay. The variability of the age structure of the Fucus vesiculosus on the littoral bay under anthropogenic press in different years has been considered in this work; moreover the environmental assessment of water quality has been also undertaken. Reference data have shown that the waters of the bay contained a wide range of pollutants, due to this an elevated concentrations of oil hydrocarbons and a number of metals have been observed for a long period. A study of the age structure of F. vesiculosus has shown that a long age series have been observed in the littoral cenopopulations of this species, plants of various age groups are presented, while the communities is based on young plants aged from 1 to 3 years. It has been found that the number of individuals of older age groups naturally decreases with increasing age. During the observing period, an increase in algae biomass and a subsequent decrease in its growth have been observed. The presented materials testify the stability of the brown alga F. vesiculosus under conditions of intensive industrial exploitation of the waters of the Kola Bay.

Scientific and technological progress and the impact of anthropogenic factors have led to an aggravation of the environmental situation and socio-economic tensions throughout the world. Problems of depletion of natural resources, pollution of the natural environment, deterioration of human health due to the negative impact of environmental factors require the search for new solutions to eliminate them. Poor environmental conditions hinder the sustainable development of countries and regions. Taking into account environmental factors in the development of national and regional development programs, justifying environmentally sound investment programs and projects, and addressing resource-saving issues are becoming more and more relevant. There is a growing correlation between the economic and environmental spheres, which are the main components of sustainable territorial development. The main obstacles to economic growth today are the increase in pollution and environmental degradation, the depletion of natural resources, the imbalance of the biosphere, and negative climate changes, which lead to the deterioration of human health and limit the possibility of further development of civilization as a whole. At the same time, achieving the key goal of the programs of the socio-economic majority of countries – improving the well-being of the population – is not provided with the necessary quality of life. This determines the relevance of sustainable development and the demand for the direction of the green economy in the world. In adapting the green economy model, each country has its own national characteristics and national specifics. In Russia, in our opinion, the model of green economy should focus on identifying underlying conditions and factors contributing to the development of green economy in the regions, taking into account existing in the world of science various models of green economy and foreign experience of introduction of green economy in the practice of public development, and also taking into account the increases in the world the value and role of alternative energy, solar energy and bioenergy based on wood fuel. / Влияние научно-технического прогресса и антропогенных факторов привели к ухудшению экологической обстановки и росту социально-экономической напряженности во всем мире. Проблемы истощения природных ресурсов, загрязнения природной среды, ухудшения здоровья людей из-за негативного воздействия экологических факторов требуют поиска новых решений их устранения. Неблагополучная экологическая обстановка препятствует устойчивому развитию стран и регионов. Учет экологических факторов при разработке национальных и региональных программ развития, обоснование экологически безопасных инвестиционных программ и проектов, решение вопросов ресурсосбережения становятся все более актуальными. Наблюдается усиление взаимосвязи экономической и экологической сфер, являющихся основными составляющими устойчивого территориального развития. Главными препятствиями экономического роста сегодня являются рост загрязнения и деградации окружающей среды, исчерпание природных ресурсов, нарушение баланса биосферы, негативные изменения климата, что ведет к ухудшению здоровья людей и ограничивает возможности дальнейшего развития цивилизации в целом. При этом достижение ключевой задачи программ социально-экономического развития большинства стран – повышение благосостояния населения – не обеспечивается необходимым качеством жизни. Это определяет актуальность и востребованность исследования вопросов устойчивого развития и направления «зеленая экономика». При адаптации модели зеленой экономики в каждой стране имеет место национальная специфика. В России, по нашему мнению, модель зеленой экономики следует ориентировать на идентификацию базовых условий и факторов, способствующих ее развитию в регионах, с учетом существующих в мировой науке различных моделей зеленой экономики и зарубежного опыта внедрения ее принципов в практику общественного развития, а также с учетом возрастания в мире значения альтернативной энергетики, солнечной энергетики и биоэнергетики, основанной на древесном топливе.

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This article is devoted to the study of the toxic effect of NaCl on sorghum plants, as one of the environmental stress factors and the release of stress-active substance (proline), as one of sensitive response of plant to salinity. The results of the study showed that the Russian variety Larets and the Kazakh variety Kazakhstan-20 germinate and grow well on saline soils. In a comparative study of sorghum varieties, a high degree of salt tolerance was determined in varieties Larets and Kazakhstan-20 and a high sensitivity to salinity of the Chinese variety Kulzha. It was found that the salt-sensitive cultivar Kulzha had a high level of synthesis of stress-active substances. The research results showed that the synthesis of proline, as one of the indicators of resistance to salinity, is not directly related to the accumulation of aboveground biomass. It was noticed that as the concentration of salt in the soil in the variety Kazakhstan-20 increased, the aboveground biomass was high for some time (from 78.22 to 69.82) and the amount of proline was also high for some time, but due to an increase in the concentration of salt in the soil, the content of proline significantly decreased. On the other hand, in the Larets cultivar, on the contrary, with the accumulation of biomass, the synthesis of proline immediately decreased. In the cultivar Kulzha, which is most sensitive to salinity, as the biomass of the stem decreased, the synthesis of proline, on the contrary, increased. This indicates that proline synthesis is not associated with a stress tolerance response in a crop such as sorghum. [ABSTRACT FROM AUTHOR]

Isosorbide is a biodegradable bicyclic diol widely used for biopolymers, surfactants, plasticizers, solvents and pharmaceuticals production, which is obtained by dehydration of sorbitol. In this investigation the double cyclodehydration of D-sorbitol to isosorbide on Amberlyst 15 and KU-2-8 sulfonic acid resins at 120-140 C in the batch reactor under vacuum (150-170 mbar) without solvent was studied. It was found that the studied catalysts provide 78-88 % isosorbide yield with a complete conversion of sorbitol at 140 C for 3 h. More stable Amberlyst 15 produces 10 g of isosorbide per 1 g of catalyst for 3 h at 130 C. After 5 experiments for 3 h at 125 C acid site concentration on Amberlyst 15 surface reduced by only 4 %, sorbitol conversion and yield of products remain almost unchanged. KU-2-8 shows high initial catalytic activity, but after only one run this resin loses 40 % of sulfonic groups. Keywords: biomass; heterogeneous catalysis; isosorbide; polymers; sorbitol dehydration. [ABSTRACT FROM AUTHOR]

Mussels Mytilus edulis L. living on the littoral are traditional objects for monitoring the state of coastal ecosystems. In the process of ecological and biochemical studies of some littoral settlements of these mussels in the Kandalaksha Nature Reserve, some modifications have been identified in the structure of local populations, and biochemical markers have also been searched at the level of lipid composition reflecting the chronic action of environmental factors. Investigations of the size and age structure of some intertidal settlements of the Mytilus edulis L. have shown inter-annual dynamics reflecting the natural processes associated with the regime of replenishment by juveniles and the elimination of generations. The revealed significant differences in the density and biomass of Mytilus edulis L. settlements probably reflect the influence of anthropogenic load on their livelihoods (first of all, prolonged discharge of fresh water from the hydroelectric station system). The composition of lipids and fatty acids in the gills of littoral mussels has been determined using thin-layer, gas-liquid and high-performance liquid chromatography methods. Evaluation of the lipid status of mussel gills inhabiting biotopes with different hydrodynamic regimes and anthropogenic load (the pollution level, fresh water discharge) has shown inter-annual dynamics in the content of lipids and their fatty acids. At the same time, there are significant differences in the content of membrane and storage lipids in the mussel gills exposed to fresh water on the littoral zone of Biotope 1. Prolonged ecological and biochemical monitoring studies of coastal mussel settlements reveal the characteristic features of their size and age structure, density and biomass, as well as the lipid status of the gills of mollusks formed under conditions of long-term environmental factors

Работа содержит результаты исследований зоопланктона оз. Арейское (бассейн р. Ингода), проведенных в 2019–2020 гг. Фауна беспозвоночных планктона озера представлена 50 видами (Rotifera — 26, Cladocera — 18, Copepoda — 6). В видовом составе превалировали представители с широкой экологической валентностью. Коловратки Brachionus angularis, Kellicottia longispina, Keratella cochlearis, K. quadrata, Polyarthra dolichoptera, Bosmina longirostris и ракообразные Daphnia crystata, D. galeata, Neutrodiaptomus incongruens, Cyclops vicinus являлись постоянными компонентами зоопланктона озера. Средние значения общей численности изменялись от 64,62 до 1249,01 тыс. экз./м3, общей биомассы — от 710,58 до 2053,48 мг/м3. Сезонная динамика количественных показателей гидробионтов характеризовалась весенним пиком и летним снижением. Основными элементами зоопланктоценоза во все сезоны года являлись коловратки (Synchaeta pectinata, S. kitina, P. dolychoptera, Asplanchna priodonta, K. quadrata, K. cochlearis, K. longispina, Filinia longiseta) и веслоногие рачки (N. incongruens, C. vicinus, Mesocyclops leuckarti). По условному разделению значений индекса Шеннона — Уивера обследованный водоем относится к олиго-мезотрофному типу.

Фауна донных беспозвоночных водотоков национального парка «Анюйский» принадлежит к типу ритрона и характеризуется разнообразием общего состава (20 групп), из которого амфибиотические насекомые литореофильного комплекса составляют 80% от общей плотности бентоса и 75% от общей его биомассы, что характерно для лососевых рек юга Дальнего Востока. На втором месте находятся бокоплавы, играющие в водных экосистемах важную роль в переработке листового опада и мертвых тел лососевых рыб после их нереста. Плотность бентосных организмов в водотоках бассейнов р. Анюй и оз. Гасси варьировала от 5 до 18 256 экз./м2, биомасса — от ˂0,1 до 32,0 г/м2 (в среднем 622 ± 52 экз./м2 и 1,2 ± 0,1 г/м2). По плотности доминировали поденки и хирономиды, по биомассе — бокоплавы, веснянки и ручейники. Встречаемость хирономид и поденок составляла по 100%, ручейников — 99%, веснянок — 88%, бокоплавов и олигохет — по 87%, других двукрылых — 82%. Редко встречались вислокрылки, пиявки, водяные ослики и перепончатокрылые насекомые рода Agriotypus Curtis (Ichneumonidae), паразитирующие на личинках ручейников (

Обсуждено современное состояние актуальной проблемы устойчивости биосферы к антропогенному воздействию. Приведены некоторые наиболее известные примеры ранговых распределений в науке и технике. В проведенном исследовании была применена гиперболическая модель, предложенная А. П. Левичем. На основе рангового (гиперболического) закона распределения установлено статистически значимое соотношение между биомассами (в пересчете на углерод) живых организмов биосферы и их рангами. Показано, что в настоящее время биосфера характеризуется как находящаяся в устойчивом состоянии.

В работе представлены материалы по изучению зоопланктона в гидротермальной зоне двух водоемов-охладителей в Забайкальском крае (водохранилище-охладитель Харанорской ГРЭС и оз. Кенон — водоем-охладитель Читинской ТЭЦ). Планктонная фауна оз. Кенон представлена 30 видами, Харанорского водохранилища — 16 видами. Общие значения численности и биомассы соответствовали 147–407 тыс. экз./м3 и 715–2624 мг/м3 для озера и 163–2245 тыс. экз./м3 и 321–15336 мг/м3 для водохранилища. Основными элементами животного планктона в период наибольшего прогревания водных масс в озере являлись Thermocyclops crassus (Copepoda) и Ceriodaphnia quadrangula (Cladocera), в водохранилище — Anuraeopsis fissa (Rotifera), Bosmina longirostris (Cladocera) и Thermocyclops crassus (Copepoda). Наибольшая концентрация гидробионтов в оз. Кенон отмечалась среди зарослей водных растений, в водохранилище — на участке уреза воды. Согласно значениям индекса Шеннона, трофность озера Кенон соответствовала мезотрофному типу, Харанорского водохранилища — эвтрофному. Высокое видовое и функциональное разнообразие зоопланктона оз. Кенон обусловлено наличием разных биотопов (грунты мелких фракций, хорошо развитый растительный пояс). В Харанорском водохранилище более высокая термическая нагрузка, значительная сработка уровня воды, крупногалечные грунты, отсутствие гидрофитов, высокий водообмен являются основными факторами, препятствующими развитию разнообразного сообщества зоопланктона.

Copyright of Scientific Bulletin of National Mining University is the property of National Mining University, State Higher Educational Institution and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The species structure and seasonal dynamics of the phytoplankton of the dam area of the Boguchany Reservoir were studied in the first years of operation of the hydroelectric power station in 2016-2017. Two peaks of algal bloom are noted in spring and summer. Mass species were: diatom Stephanodiscus minutulus and dinophyte Gymnodinium baicalense in spring; diatoms Asterionella formosa and Fragilaria crotonensis, blue-green Dolichospermum lemmermannii, D. flosaquae, D. flosaquae f. spiroides and Aphanizomenon flosaquae; green Sphaerocystis planctonica and dinophyte Ceratium hirundinella in summer; diatoms F. crotonensis and A. formosa, cryptophytic Rhodomonas pusilla and Cryptomonas ovata in autumn. The cryptophyte R. pusilla and the Cryptomonas species were dominated under the ice. The maximum number of phytoplankton (9 million cells in liter) was recorded in the spring. According to the indixes of saprobity, the purity of water corresponded to II-III quality classes (pure and moderately polluted water).

Coastal fishery develops in Primorye since 1990s because of negative changes in the resources for Russian fishing industry in the deep-water sea. One of the way to optimize the fish resources usage is introduction of passive fishing gears, as fixed nets. Data of the fixed net control catches in the estuaries and coastal waters in the bays of southern Primorye obtained by Pacific Fish. Res. Center (TINRO) in 2011-2016 are summarized. Quantitative composition and species diversity of fish in certain areas are compared, taking into account their seasonal and interannual variability. The species composition is associated with specific physical and geographical features, so it is similar in the estuaries and bays with similar environments. Fish abundance is evaluated using the methodology adopted for fixed nets.

An overview of published and new estimates of zooplankton density and biomass in the Far-Eastern Seas and North-West Pacific with their daily, seasonal and interannual dynamics is presented on the materials of numerous marine expeditions conducted by Pacific Fish. Res. Centre (TINRO) in the 1980-2010s. The mean annual concentration of zooplankton (103 ind./m3) in the epipelagic layer is amounted as 4.386 for the Bering Sea, 3.695 for the Okhotsk Sea, 6.842 for the Japan Sea, and 3.399 for the North-West Pacific, whereas its biomass (g/m3) - 1.079, 0.821, 0.626, and 0.800, respectively. Significant differences are shown for spatial distribution and temporal dynamics of the small-, medium- and large-sized zooplankton abundance and its daily vertical migrations in different areas. Zooplankton stocks in all these regions are evaluated as high; their bulks are formed by large-sized fraction. Interannual fluctuations of the zooplankton abundance could be considerable in certain areas, but its total resource within the Far Eastern basin does not change much: the abundance decline in some areas is compensated by its growth in other ones.

Taxonomic composition, distribution and resources of the macrobenthos within the depth range of 5-230 m are considered on the materials collected by bottom sampler in the survey conducted in Peter the Great Bay in 2011 (233 stations, 400 samples). The same grid of samplings was used as in the previous survey in 2003. The data were averaged within 5 domains: Amur Bay, Ussuri Bay, the Western (westward from 131о30′ E), Central (131о30′-132о30′ E) and Eastern (eastward from 132о30′ E) areas. In general, the average total biomass of the macrobenthos in Peter the Great Bay in 2011 was 241.8 ± 21.1 g/m2, that is almost the same as in 2003 (265.4 ± 25.1 g/m2). The main taxonomic groups of macrobenthos were: bivalves (34.0 %), polychaetes (23.0 %), phoronids (7.1 %), and barnacles (7.1 %); these 4 groups formed 71.1 % of its total biomass and with other 11 common groups with the portions 11,0-3.5 % each (sea anemones, nemerteans, echiurans, amphipods, gastropods, sea stars, brittle stars, sea urchins, holothurians, ascidians, and algae) - 96.6 % of its total biomass. Relative to 2003, the portion of polychaetes and phoronids became larger (15.8 % and 4.33 % in 2003, respectively), and the portions of holothurians and echiurians became smaller (12.1 % and 7.3 % in 2003, respectively). The value of Shorygin-Shoener similarity index ( ICS ) of the macrobenthos of Peter the Great Bay was 79.7 % in both 2003 and 2011. Decreasing of bivalves and increasing of polychaetes were observed in all areas of Peter the Great Bay. In the Amur Bay, the mean total biomass and ratio of the dominant groups didn’t change, with exception of some decreasing of bivalves and increasing of polychaetes. In the Ussuri Bay, the mean total biomass and composition of the dominant groups did not change, too, but the portions of holothurians and echiurans decreased significantly and the portions of phoronids increased more than 3-fold. In the Western area, the place of echiurans, which in 2011 were practically not found, was occupied by sea urchins and ascidians, the biomass of brittle stars was 1.5-fold decreased, too, but amphipods became more abundant. In the Central area, the biomass of holothurians decreased in 8 times that caused the 1.7-fold decreasing of the mean total biomass of macrobenthos. In the Eastern area, the most significant changes were the sponges decreasing and almost 2-fold increase of the polychaetes biomass. The total resources of macrobenthos in Peter the Great Bay are assessed in 2011 at 1.5 million tons (340 thousand tons less than in 2003). The gross biomass of bivalve mollusks and polychaetes was estimated at 473 and 404 thousands tons, respectively, or in sum about 60 % of the total biomass of macrobenthos. Between the 2003 and 2011, the following prominent changes of the taxa gross biomass occurred: polychaetes +100. 103 t, bivalves -80. 103 t, echiurans -100. 103 t, and holothurians -400. 103 t. Anyway, the dominant taxonomic groups of Peter the Great Bay macrobenthos were constantly bivalves and polychaetes (and barnacles in the Amur Bay) and all changes in taxonomic structure or even replacing each other concerned the subdominant and minor taxa. Reasons of some changes, as significant (dozens of times) decrease in the biomass of holothurians and echiurans (mainly Pentamera calcigera and Echiurus echiurus ) are still vague and possibly are related to biology of these species.

По данным исследований 2011 и 2018 гг. разнообразие коловраток и ракообразных р. Амазар (среднее и нижнее течение) состоит из 33 таксонов видового ранга. Согласно эколого-географической характеристике в видовом составе превалируют широко распространенные и эвритопные виды. Количественные показатели изменялись в пределах 0,02–203,47 тыс. экз./м3 и 0,02–378,85 мг/м3. Бедный таксономический состав и низкое количественное развитие речной мейофауны связаны с особенностями ландшафтной структуры и гидрологическими условиями.

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The distribution of the biomass of the seston in depths was investigated by the method of ATP-metry on lake Sevan. The distribution of phytoplankton is specified by the method of recording delayed fluorescence. At the same time, the total organic matter was determined from the depths by measuring the degree of oxidation of water. There is a parallelism in the dynamics of the distribution of organic matter recorded by these three methods. [ABSTRACT FROM AUTHOR]

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Copyright of Ekonomika APK is the property of Economy of Argo-Industrial Complex and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Показателем разнообразия планктонных беспозвоночных нижнего течения р. Борзя, по данным 2005, 2016, 2018 гг., является наличие 72 таксонов рангом ниже рода. В видовом составе зоопланктона превалируют широко распространенные и литоральные виды. Видовое богатство изменялось от 11 до 42 видов, общая численность – от 0,22 до 92,20 тыс. экз./м3, общая биомасса – от 0,77 до 740,14 мг/м3. Наибольшее разнообразие и высокая плотность зоопланктеров отмечались после летнего паводка.

The results of three years' researches on influence of various wood and shrubby biomass plowed to the cespitose and podsolic loamy soil and fertilizers on biochemical indicators, important for feeding of animal (KRS), artificial seedings - crude protein (CP), crude cellulose (CC), crude fat (CF), crude ashes (CA) are stated. Application of fertilizers at seal of underwood with aspen, the less of all - is most effective at seal of young growth of willow where especially accumulation in plants of crude fat in artificial seedings decreased by 19%.

Dependence of biomass accumulation by melanin producer Pseudonadsoniella brunnea (Merepilaceae, Agaricomycotina) of the cultural medium content was aim of this study. The following 14 different types of cultural media were used: standard liquid nutrient media (Malt extract broth – МЕВ), Sabouraud Broth, potato-dextrose Broth, as well as the original (modified) nutritional media, based on Malt extract Broth, barley malt extract and Nutrient Broth. Various components were used for the modified media, in particular 0.9 % NaCl, monosaccharides (D-glucose, fructose, D (+) – xylose), disaccharides (sucrose, D (+) – maltose, D-lactose), and others. Cultivation of Ps. brunnea was carried out at pH 3-4, temperature + 24 ± 2 ºС for 28 days. The analysis of the results obtained shows that the following media: the liquid nutrient media of MEB, Sabouraud Broth, and barley malt extract with the addition of enzymatic peptone (1 %), yeast extract (0.5 %) and a mixture of these media in different proportions found to be the most optimal media for the accumulation of biomass of melanin producer Pseudonadsoniella brunnea. [ABSTRACT FROM AUTHOR]

Copyright of Bioeconomics & Agrarian Business / Bìoekonomìka ta Agrarnij Bìznes is the property of National University of Life & Environmental Sciences of Ukraine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The aim of the research was to study the development of Chlorella vulgaris at culturing on the modified Gromov 6 medium with high concentrations of nanostructured ferric citrate and also its effect on photosynthesis pigments accumulation. It was demonstrated that the highest intracellular iron content (15 mg/g of dry mass) in the culture cells was typical with nanostructured ferric citrate content of 30 mg/dm3 of culture medium, the highest content of chlorophyll a - 23 mg/g of dry algae mass, b - 7.5 mg/g of dry mass, and carotenoids - 9.2 mg/g of dry mass was observed at nanostructured ferric citrate content of 20 mg/dm3. The use of nanostructured ferric citrate leaded to an increase in the chlorella biomass yield by 3 times with compared to standard technology. Simultaneously, intracellular iron content in cells increased significantly with the use of nanostructured ferric citrate, which increases their value as a nutritional supplement. In order to increase the biomass yield and intracellular iron content in cells, application of nanostructured ferric citrate is recommended. [ABSTRACT FROM AUTHOR]

Significant amount of biomass of the green unicellular microalgae Parachlorella kessleri under conditions of intensive cultivation were obtained. The chemical composition of the obtained biomass was investigated. The total protein amount (43,3% in dry weight) was determined by the modified Kjeldahl method. The qualitative and quantitative composition of fatty acids was studied by the method of GC-analysis. The results have shown that the dry biomass of microalgae contains 6.8 % of fatty acids in dry weight, including saturated - 26,6 %, non-saturated - 59,9 % and non-identified - 5,0 %. The total amount of carbohydrates (32,04 % in dry weight) was determined by HPLC analysis. They were identified, the amount of basic polysaccharides were determined, including glucans - 23,0 %, arabinan - 30,0 %, xylan - 24,0 %, and lignin - 23,0 %. The content of chlorophyll a and b was determined spectrophotometrically and composed 12,7 and 5,7 mg/g dry biomass, respectively. [ABSTRACT FROM AUTHOR]

Planktonic infusoria communities of the main tributaries downstream of Lake Sevan have been investigated. The species composition, seasonal dynamics of the qualitative and quantitative parameters of planktonic infusoria have been studied. Ecological sanitary state of the Argichi and Masrik rivers were assessed. [ABSTRACT FROM AUTHOR]

Copyright of Economy & Forecasting / Ekonomìka ì Prognozuvannâ is the property of Ukrainian National Academy of Sciences, Institute for Economic Forecasting and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Machinery & Energetics is the property of National University of Life & Environmental Sciences of Ukraine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)