scholarly journals Microalgal diversity as an indicator of the state of the environment of water bodies of Doon valley in Western Himalaya, India

2020 ◽  
Vol 112 ◽  
pp. 106077
Author(s):  
Abhijeet D. Kadam ◽  
Garima Kishore ◽  
Deepak Kumar Mishra ◽  
Kusum Arunachalam
2018 ◽  
Vol 245 ◽  
pp. 11013 ◽  
Author(s):  
Nikita Myazin ◽  
Yuri Neronov ◽  
Valentin Dudkin ◽  
Vadim Davydov ◽  
Victoria Yushkova

The article substantiates the need for continuous monitoring of the state of the environment both in the territories of the object under construction and in the areas of improvement works. The method of nuclear-magnetic spectroscopy is proposed, which allows carrying out ecological express monitoring of the state of condensed media (for example, water, silt, various mixtures, etc.) in real time. The results of ecological express monitoring are presented and recommendations for its more effective application are given.


2021 ◽  
Vol 270 ◽  
pp. 01030
Author(s):  
Nadezhda Khudyakova ◽  
Oksana Safonova ◽  
Olga Vozniychuk

In modern conditions of Gorny Altai, with an increase in anthropogenic load on the ecosystems of the region, it becomes important to assess environmental pollution. The state of the environment monitoring is a topical direction of science. The work analyzes the distribution and structural features of macrozoobenthos communities in the rivers of Altai. Revealed 25 species of invertebrate aquatic organisms belonging to 4 types and 6 classes. Benthic communities of 12 different water bodies of the Northern and Central Altai have been analyzed. Analysis of the studied structure of groups based on Euclidean distances for the shares of species in communities showed that they can be divided into three classes depending on the dominant species in them. The scheme based on the Jaccard index made it possible to reveal the influence of environmental factors that determine the structure of macrozoobenthos communities in Altai rivers. It was revealed that the anthropogenic factor has an indirect effect on the structure of communities of aquatic organisms; therefore, the macrofauna of aquatic organisms can be used as a primary indicator of the state of aquatic ecosystems.


2021 ◽  
Vol 5 ◽  
pp. 96-101
Author(s):  
N. D. Vershilo ◽  

The article deals with the issues of law enforcement practice related to compensation for harm caused to water bodies. In addition, both the current budgetary and environmental legislation are analyzed. It is noted that the collection of funds from the defendant in the form of compensation for harm and their transfer to the budget in itself is not directly aimed at restoring the state of the environment.


2002 ◽  
Vol 50 (1) ◽  
pp. 1 ◽  
Author(s):  
Mark A. Burgman

Despite the fact that the most changes in lists of threatened species reflect changes in knowledge rather than changes in conservation status, the lists continue to provide social and legal mandates for conservation; they are used to report on the state of the environment and to guide the allocation of scarce resources. There is a substantial under-representation of non-vascular species in threatened plant lists, reflected in an absence of documented extinctions among fungi and algae. Turnover in the composition of extinct flora lists in Australia suggests that the lists of threatened species may not be sufficiently reliable to form the basis for reporting on the state of the environment. They are of limited use in distinguishing between levels of threat and may not be a reliable guide for the allocation of scarce conservation resources among plant species. Systems for listing threatened species create a feedback loop, responsive to the subjective preferences of scientists, largely unresponsive to underlying true threats, self-perpetuating and accentuating bias with each iteration. Other tools, including formal decision approaches and the acquisition of new kinds of data, are needed to fill the roles.


2002 ◽  
Vol 15 (3) ◽  
pp. 235-245
Author(s):  
Lakhdar Aggoun ◽  
Lakdere Benkherouf

This paper is concerned with a discrete time, discrete state inventory model for items of changing quality. Items are assumed to be in one of a finite number, M, of quality classes that are ordered in such a way that Class 1 contains the best quality and the last class contains the pre-perishable quality. The changes of items' quality are dependent on the state of the ambient environment. Furthermore, at each epoch time, items of different classes may be sold or moved to a lower quality class or stay in the same class. These items are priced according to their quality, and costs are incurred as items lose quality. Based on observing the history of the inventory level and prices, we propose recursive estimators as well as predictors for the joint distribution of the accumulated losses and the state of the environment.


2009 ◽  
Vol 89 (4) ◽  
pp. 141-160 ◽  
Author(s):  
Sanja Mustafic ◽  
Predrag Manojlovic ◽  
Miroljub Milincic

The drainage basin is spatially and functionally clearly defined and relevant hydrologic, geomorphologic and ecologic landscape totality. Therefore, it mostly represents basic geo-spatial unit of generation, monitoring, and studying numerous physical-geographical and geo-ecologic occurrences and processes. One of the most important components of geo-space, on the level of basin, is manifested through the state and quality of surface waters. So, the acceptance of systematic approach in studying mineralization of the surface waters would contribute to the deeper understanding of the process in complex systematic surroundings which drainage basin represents. The Visocica Drainage Basin was chosen as proving ground of this kind of the research approach for several reasons. The highest specific runoff on the territory of Eastern Serbia, heterogeneous geologic structure of terrain, almost complete absence of the influence of the anthropogenic factor on the state of the environment, as well as the existence of water accumulation enabled perception of the values of dissolved mineral substances of surface waters as landscape-ecologic component of geo-space.


Author(s):  
Массеров ◽  
D. Messerov

The experience of the industrialized countries on the state of the environment monitoring convincing shows that their success in environmental regulation are mainly due to the use of modern environmental management methods. The experience of the European Union concerning the control mechanisms in the field of environmental protection and the possibility of its application in Russia are analyzed.


2021 ◽  
Vol 38 ◽  
pp. 00042
Author(s):  
Marina E. Ignatenko ◽  
Tatyana N. Yatsenko-Stepanova ◽  
Olga G. Kalmykova

The first data about the algae flora of the water bodies of the “Aschisayskaya Steppe” plot of the State Nature Reserve “Orenburgsky” are presented. 217 species and intraspecies taxa of microalgae belonging to the phyla Chlorophyta, Euglenozoa, Bacillariophyta, Ochrophyta, Streptophyta, Miozoa and Cyanobacteria were found in five reservoirs of the plot. New species for the territory of the Orenburg Region, as well as rare species for Russia are noted, their characteristics and micrographs are given. The obtained data expands the current understanding of the range of the identified taxa.


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