scholarly journals ENVIRONMENTAL CONSEQUENCES OF LAKE MANZHEROK REHABILITATION (ALTAI REPUBLIC)

2021 ◽  
Vol 26 (1) ◽  
pp. 41-49
Author(s):  
Y. V. Robertus ◽  
◽  
A. V. Puzanov ◽  
A. V. Kivatskaya ◽  
R. V. Lyubimov ◽  
...  
Keyword(s):  
Water Area ◽  
Matter Content ◽  
The State ◽  
Lake Ecosystem ◽  
Ecological State ◽  
Altai Republic ◽  
Environmental Consequences ◽  
Water Testing ◽  
Water Chestnut ◽  
Microbiological Parameters

Introduction. Manzherok Lake is the only habitat of the Red Book endemic water chestnut (Trapa pectinata) in the Altai Republic. In the second half of the 20th century, its catchment area underwent significant anthropogenic transformations, increasing the degradation of the lake ecosystem. To stabilize the state of the reservoir, in 2017–2018, its central part was cleared of the bottom silt (sapropels). Methods. In 2019–2020, as part of monitoring the state of the lake’s water area, 11 rounds of water testing were conducted at six points on two profiles. In total, we collected 72 water samples and studied their chemical composition and, partially, microbiological parameters. The suspended matter content, turbidity and oxidability of water were determined on an ongoing basis. Results. We identified a trend for a consistent decrease in the content of suspended particles and other indicators of the ecological state of water. The forecast for 2020 to improve the quality of lake water was confirmed. We also revealed other positive changes in the ecological state of Manzherok Lake after its clearing. Conclusion. We determined features of lake ecosystem self-restoration after rehabilitation and made a forecast regarding the preservation of positive trends in the restoration of water quality for the next 1–2 years. It is shown that the lake clearing of the bottom silt did not solve the problem of its rehabilitation to the full.

scholarly journals COMPARATIVE BIOELECTRONIC DIAGNOSTICS OF THE ECOLOGICAL STATE OF POLLUTED WATER AREAS (ON THE EXAMPLE OF SOME CHANNELS OF THE VOLGA DELTA)

2021 ◽  
Author(s):  
Sergey V. Kholodkevich ◽  
Maxim K. Motruk ◽  
Vasiliy A. Lyubimtsev ◽  
Olga N. Susloparova
Keyword(s):  
Ecological Status ◽  
Water Area ◽  
The State ◽  
Polluted Water ◽  
Ecological State ◽  
Volga River ◽  
Volga Delta ◽  
Environmental Status ◽  
Quality Coefficient ◽  
The Russian Federation

The objects of bioindication of the ecological state were 3 channels of the Volga Delta, located both directly in Astrakhan and in the Astrakhan region. The aim of the work was to conduct a comparative bioelectronic diagnosis of the ecological state of the selected channels with different local anthropogenic loads, both by type and size, based on assessments of the functional state (health) of the bivalve mollusks Anodonta anatina living in them, estimated on the basis of an analysis of their cardiorhythm, measured using an original fiber-optic bioelectronic system. It was found that shellfish selected from different water areas, after 1hour functional load, restore the original heart rate for different times, but in the range from 117 to 166 minutes, which is typical for shellfish living in significantly polluted reservoirs of the same ecological status - "Bad". This characteristic of the water areas completely coincides with the characteristic of the ecological state of the channels of the Volga River Delta specified in the State Report "On the state and on Environmental Protection of the Russian Federation in 2017". The authors proposed and justified the possibility of using the water area of the Gandurino River as a conditional reference for the Volga Delta region. In this case, according to the value of the environmental quality coefficient EQR, the channels of the Urban Branch and the Small Channel can be attributed to the regional environmental status - "Good".

scholarly journals ASSESSMENT OF THE ECOLOGICAL CONDITION OF THE WHALES BAY (PRIMORSKY KRAI)

2020 ◽  
Author(s):  
R.F. Rakhmatov ◽  
Keyword(s):  
Water Area ◽  
Ecological Condition ◽  
The State ◽  
Ecological State ◽  
Primorsky Krai ◽  
The Future

The article analyzes the ecological state of Kitovy Bay (Primorsky Territory). In the course of the study, various materials were studied and personal observations were made, on the basis of which the causes that negatively affect the state of the water area were identified, and ways to eliminate them in the future were proposed.

ON FOREST ECONOMICS TRANSFORMATION

1970 ◽  
pp. 8-11
Author(s):  
А. Kh. Chochaev
Keyword(s):  
Forest Management ◽  
Market Economy ◽  
Atmospheric Precipitation ◽  
The State ◽  
Forest Economics ◽  
Environmental Consequences ◽  
Social Environmental ◽  
Groundwater Reserves ◽  
Growing Conditions ◽  
Environmentally Sound

The article analyzes problems of the Russia forest complex development related to social, environmental and infrastructure issues, the solution of which is impossible without state participation. The reasons of the poor adaptation of the forest complex market economy to long development periods, as well as the environmental consequences of economic activity, including environmental pollution, depletion of natural resources, loss of biodiversity and damage to public health, are considered. The analysis of the forest complex market economy features is made on domestic and foreign examples, a serious shortcoming of which is the isolation of the investment payback process from the chosen economic development direction. Forest rejuvenation in this way leads to a decrease or even loss of the forests biospheric properties to regulate the surface runoff of atmospheric precipitation and the formation of groundwater reserves. It is known, that in the forests of the European part of Russia have been accumulated large reserves of semi-subsistence conifer and hard wood. It is shown that to involve it in use it is necessary to change the principles of annual use calculations and to actually re-develop the regulatory framework for the intermediate use of forest wood resources. Four forest management units in the forest economy of the forest complex were identified: state forest management and implementation of medium-term and long-term planning of all types of work in forests, taking into account materials of the state forest inventory and assessing the state and trends in the development of domestic and foreign timber markets; protection and protection of forests from fires and other adverse natural factors (insects, fungi, pollution); carrying out planned logging with the differentiated use of all types of wood and the organization of reforestation taking into account the diversity of growing conditions and the possibilities of using the lands of the state forest fund of Russia. It is advisable to create economic mechanisms to stimulate the activities of all enterprises and institutions of the Russia forest complex for the transition to new environmentally sound technologies in the forest. A flexible economic mechanism is needed to include forest management costs in the cost of harvested wood in order to restore the ecological, economic, social and cultural properties of forests.

SELF-PURIFICATION OF SEA COASTAL WATER AREAS UNDER CLIMATIC AND ANTHROPOGENIC CHANGE

2017 ◽  
Author(s):  
Irina Mesenzeva ◽  
Irina Mesenzeva ◽  
Elena Sovga ◽  
Elena Sovga ◽  
Tatyana Khmara ◽  
...  
Keyword(s):  
Anthropogenic Impact ◽  
Water Exchange ◽  
Water Area ◽  
Clean Water ◽  
Ecological State ◽  
Anthropogenic Change ◽  
Run Off ◽  
Open Sea ◽  
Sevastopol Bay ◽  
Assimilation Capacity

The ability of a bay and gulf ecosystems to self-purification was estimated and the current ecological state of the Sevastopol Bay in whole and the separated parts of the bay was given as an example. A zoning by type of anthropogenic impact subject to the water exchange with the open sea and an influence of the Chernaya River run-off were taken into account. A comparative analysis of assimilation capacity of the most environmentally disadvantaged part of the Sevastopol Bay (the Southern Bay) and the clean water area, bordering on the open sea, was carried out. The hydrodynamic regime of the Sevastopol Bay was described using numerical modelling. The prospect, opportunity and examples of the methodology for assessing the assimilation capacity of marine ecosystems are demonstrated.

OBTAINING FRUIT AND BERRY EXTRACTS WITH HIGH ANTIOXIDANT ACTIVITY WHEN USING ULTRASONIC RADIATION

2018 ◽  
Author(s):  
Н.Б. ЕРЕМЕЕВА ◽  
Н.В. МАКАРОВА
Keyword(s):  
Antioxidant Activity ◽  
Raw Materials ◽  
Matter Content ◽  
Dry Matter Content ◽  
Black Currant ◽  
Ultrasonic Radiation ◽  
Microbiological Parameters ◽  
High Antioxidant Activity ◽  
Berry Extracts ◽  
Physical And Chemical

Подобраны оптимальные параметры для экстракции плодов и ягод черной смородины, малины, вишни, черноплодной рябины при ультразвуковом излучении 35 кГц с целью получения плодово-ягодных экстрактов с высокой антиоксидантной активностью. На основании экспериментальных данных выбраны технологические режимы процесса: экстрагирование сырья 75%-м этиловым спиртом при соотношении сырье : растворитель 1 : 10, температуре (40 ± 5)°C в течение 90 мин. Экстракты концентрируют под вакуумом до содержания сухих веществ 65%. Дана технологическая схема получения плодово-ягодных экстрактов. Полученные экстракты обладают высокой антиоксидантной активностью, содержат большое количество фенольных веществ, флавоноидов и антоцианов; по органолептическим, физико-химическим и микробиологическим показателям соответствуют нормативной документации. The optimal parameters for extraction of fruits and berries of fruits and berries of black currant, raspberry, cherry, chokeberry with ultrasonic radiation of 35 kHz in order to obtain fruit and berry extracts with high antioxidant activity are selected. Based on the experimental data, the technological modes of the process are selected: extraction of raw materials with 75% ethyl alcohol at a ratio of raw materials: solvent 1: 10, temperature (40 ± 5)°C for 90 min. The extracts are concentrated under vacuum to a dry matter content of 65%. Technological scheme of fruit and berry extracts is given. The obtained extracts have a high antioxidant activity, contain a large amount of phenolic substances, flavonoids and anthocyanins; organoleptic, physical and chemical and microbiological parameters correspond to the normative documentation.

3. Sunlight and motion

2018 ◽  
pp. 26-47
Author(s):  
Warwick F. Vincent
Keyword(s):  
Ecosystem Services ◽  
The State ◽  
Slow Waves ◽  
Habitat Characteristics ◽  
Water Transparency ◽  
Lake Ecosystem ◽  
Physical Habitat ◽  
State Of Health ◽  
Temperature Water

Water transparency powerfully indicates the state of health of a lake ecosystem. The water’s turbidity defines the physical habitat characteristics of lakes, strongly influencing their chemistry, biology, and ecosystem services. ‘Sunlight and motion’ explains the methods for measuring water transparency and how the penetration of sunlight into water declines with depth. The different colours, hues, and brightness levels of lakes are due to the materials dissolved and suspended within them. The layering of different temperature water in lakes is also described. This stratification varies greatly with the seasons. Mixing of the waters is mainly due to slow waves at and just below the surface as well as deeper currents.

scholarly journals Sorption and desorption of Suflafenacil in two soils in the state of São Paulo with different physical and chemical attributes

2014 ◽  
Vol 32 (2) ◽  
pp. 393-399 ◽  
Author(s):  
M.B. Matallo ◽  
D.A.S. Franco ◽  
S.D.B. Almeida ◽  
A.L. Cerdeira
Keyword(s):  
Organic Matter Content ◽  
Sorption Isotherms ◽  
Sao Paulo ◽  
Matter Content ◽  
The State ◽  
Angular Coefficient ◽  
São Paulo ◽  
Type C ◽  
Chemical Attributes ◽  
Physical And Chemical

A study was conducted to evaluate the sorption and desorption of 14C herbicide saflufenacil (pyrimidinedione) in two soils in the State of São Paulo, classified as Red Yellow Latosol with clayey texture (LVA-1) and medium texture (LVA-2), using the batch method through isotherms. The soils were air dried and sieved a 2 mm mesh. The radioactivity was determined by liquid scintillation spectrometry in acclimatized room (25 ± 2 °C). Sorption isotherms were conducted for 5 concentrations of saflufenacil (5.0; 2.5; 1.0; 0.5 and 0.05 μg mL-1) and the results were adjusted to the Freundlich equation, thus obtaining the parameters of sorption followed by two extractions with 0.01 M CaCl2 to determine desorption parameters similarly to sorption. The results showed that saflufenacil sorption was low for both soils studied, being greater for the LVA with higher organic matter content. The desorption coefficients were greater than their sorption coefficients, suggesting the occurrence of hysteresis. The sorption and desorption isotherms (classified as type C isotherms), hysteresis and the t-test between the angular coefficient of the respective isotherms showed that both the sorption and desorption occur with equal intensity.

Monitoring of aerosols and the state of sea water of the water area of the Karadag natural reserve

2015 ◽  
Vol 37 (1) ◽  
pp. 4-9
Author(s):  
V. V. Goncharuk ◽  
A. O. Samsoni-Todorov ◽  
O. A. Savchenko ◽  
V. A. Yaremenko ◽  
V. A. Lapchenko ◽  
...  
Keyword(s):  
Sea Water ◽  
Water Area ◽  
The State ◽  
Natural Reserve

scholarly journals AGRO-ECOLOGICAL SUBSTANTIATION OF THE MELIORATIVE ACTIVITIES TO IMPROVE THE STATE OF SOILS OF KALINOVSKY DISTRICT

2019 ◽  
pp. 220-230
Author(s):  
Yuri Shcatula
Keyword(s):  
Agricultural Production ◽  
Soil Acidity ◽  
Well Being ◽  
The State ◽  
Ecological State ◽  
Acidic Soils ◽  
Mobile Phosphorus ◽  
State Of The Environment

Agricultural production is one of the factors for the deterioration of the agro-ecological state of the environment and the anthropogenic-man-made changes in all its components. After analyzing the results of the research, it can be argued that the soils of the Kalinovsky region are characterized as medium-provided with humus, an indicator in the range of 2.21-4.01%. The content in the topsoil of mobile phosphorus is 10.0 mg/100 g of soil, mobile potassium 8.3 mg./100 g of soil related to the well-being, salt pH is 5.9. To carry out reclamation measures and reduce the areas of soil acidity to neutral and close to them values, it is necessary to have highly acidic soils with pH of salt. 4.5 and Нr 5.4 mg.eq/100 g produce lime with a rate of 5.4 t/ha; average oxygen with pH of sol. 4.8 and Нr 4.7 mg.eq/100 g to lime with the norm of lime 4.7 t/ha and slightly acid with pH of salt 5.4 and Hr 3.1 mg. Eq/100 g – 3.1 t/ha.

scholarly journals THE ASSESSMENT OF ANTHROPOGENIC LOAD ON THE COASTAL ZONE OF PESCHANOYE LAKE - A NATURE MONUMENT OF REGIONAL SIGNIFICANCE IN THE TOMSK REGION

2020 ◽  
Author(s):  
N.M. Semenova ◽  
◽  
A.P. Tishchenko ◽  
Keyword(s):  
Coastal Zone ◽  
The State ◽  
Anthropogenic Load ◽  
Left Bank ◽  
Ecological State ◽  
Wise Use ◽  
Tomsk Region

The questions of the wise use and maintenance of the ecological state of the natural monuments of the Tomsk region, which are popular for recreation, are raised. The research was carried out on the example of Peschanoуe Lake on the left-bank terrace of the Tom River near Tomsk. The data on the state of the coastal zone of this lake are given.

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