scholarly journals Восстановление сообществ водных беспозвоночных в результате очистки донных отложений от нефти

2017 ◽  
Vol 7 (4) ◽  
pp. 407-413
Author(s):  
Yu. A. Noskov ◽  
D. S. Vorobiev
Keyword(s):  
Species Diversity ◽  
Bottom Sediments ◽  
Natural Water ◽  
Oil Spills ◽  
Water Environment ◽  
Water Bodies ◽  
Time Interval ◽  
Ecological Groups ◽  
Oil Concentration ◽  
Natural Water Bodies

Oil decontamination of water bodies is one of the most complex and time-consuming tasks in the field of liquidation of oil spills. The complexity of cleaning natural water bodies is associated with a dynamic water environment and a variety of oil transformation processes that occur in the water. The most advanced and developed are technologies and methods of collecting oil and oil products from the surface of water bodies. Economically acceptable and well-grounded technologies for oil decontamination of bottom sediments are presented in minimal quantities, and often are not applicable to natural water bodies. The technology for oil decontamination based on flotation has been developed and successfully applied on Lake Shchuch'ye in 2004–2005 and showed a positive result after two summer seasons of work. This article presents the results of aquatic ecosystems recoverу as a result of oil decontamination of bottom sediments. The issue of restoration of the aquatic ecosystem as a result of cleaning bottom sediments from oil after a considerable time interval has been studied. A comparison of the quantitative indices and species diversity of the zooplankton of Shchuch'ye Lake from 2004 to 2016 showed a clear tendency of increasing the abundance, biomass and species diversity of total zooplankton and Cladocera in particular. In 2016 the amount of zooplankton species of Shchuch’ye Lake reaches the number of species of the uncontaminated lake, using as a control. It was shown that the macrozoobenthic fauna of Shchuch'ye Lake is poorer in both the number of main ecological groups and in species diversity within certain groups characteristic than in the uncontaminated lake. Some groups were found in both lakes, but the species diversity of Lake Shchuchye was poorer. The exception was a group of leeches, which had a greater variety in Lake Shchuch'ye. The change in the oligochaetene complex to chironomid, both in numbers and in biomass, indicates an improvement in environmental conditions, since chironomids are more sensitive to the quality of the habitat. Chemical analysis of bottom sediments in 2016 revealed that the oil concentration did not exceed 0.9 mg / kg, which indicates the effectiveness of the oil decontamination technology of bottom sediments.

Assessment of the Influence of the Invasive Species Pistia stratiotes (Araceae) on Some Species of Submerged Macrophytes of Natural Water Bodies of Ukraine

2017 ◽  
Vol 53 (5) ◽  
pp. 75-84
Author(s):  
O. P. Olkhovich ◽  
N. Yu. Taran ◽  
N. B. Svetlova ◽  
L. M. Batsmanova ◽  
M. V. Aleksiyenko ◽  
...  
Keyword(s):  
Invasive Species ◽  
Natural Water ◽  
Submerged Macrophytes ◽  
Water Bodies ◽  
Pistia Stratiotes ◽  
Natural Water Bodies

scholarly journals Reply: Potential discharge, attenuation and exposure risk of SARS-CoV-2 in natural water bodies receiving treated wastewater

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Manish Kumar ◽  
Md Alamin ◽  
Keisuke Kuroda ◽  
Kiran Dhangar ◽  
Akihiko Hata ◽  
...  
Keyword(s):  
Natural Water ◽  
Water Bodies ◽  
Treated Wastewater ◽  
Exposure Risk ◽  
Natural Water Bodies

On methodological approaches to the improvement of surface water bodies and target indicators of the natural waters’ quality

2021 ◽  
Vol 27 (1) ◽  
pp. 6-14
Author(s):  
V. Zaslonovsky ◽  
◽  
N. Sharapov ◽  
M. Bosov ◽  
◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Natural Water ◽  
Aquatic Ecosystems ◽  
Natural Waters ◽  
Water Bodies ◽  
Surface Water Bodies ◽  
Methodological Approaches ◽  
Natural Water Bodies

The paper is devoted to the development of proposals concerning the improvement of surface water bodies and the appointment of target indicators of the natural waters’ quality. The paper considers a variety of problems of preserving, restoring and improving the quality of natural surface waters: from regional features of the formation of natural water composition, to differences in the requirements for the quality of water consumed. The object of the study is the qualitative indicators of the waters of natural water bodies, and the subject of the study is the methodological approaches to the normalization of these indicators. The purpose of the work is to identify the main shortcomings in the domestic system of rationing the quality of natural waters, and to form appropriate proposals. For this purpose, the following tasks were set and solved: to review the methodological approaches to assessing and rationing the quality of natural waters used in some foreign countries and in the Russian Federation, to identify the main causes and shortcomings; to make proposals for improving the current system of water quality rationing. The result of this work is the conclusions about the lack of impact of the strategy operating in Russia in the development of schemes of complex use and protection of water objects, standards of permissible impact on water bodies, the appointment of permissible discharge limits in terms of maintaining and improving the water quality of natural water bodies. The reasons that led to this are indicated. The necessity of taking into account, in addition to the physical and chemical composition, also hydrobiological parameters is shown. It is concluded that instead of fisheries management standards, environmental standards should serve as the basis for target indicators of water quality of natural water bodies, which determine the well-being of humans and the stable functioning of aquatic ecosystems, taking into account regional factors. Proposals were made to adjust the methodological approaches to the implementation of this strategy. According to the authors, these proposals will speed up the solution of the main objectives of the strategy – the ecological improvement of water bodies, the preservation of unique aquatic ecosystems and the environmentally safe development of territories that previously experienced relatively small anthropogenic impacts (Eastern Siberia and the Far East)

Anti-algal activity of a fluorine-doped titanium oxide photocatalyst against Microcystis aeruginosa and its photocatalytic degradation

2021 ◽  
Vol 45 (37) ◽  
pp. 17483-17492
Author(s):  
Xuechun Wei ◽  
Hongxiang Zhu ◽  
Jianhua Xiong ◽  
Wenyu Huang ◽  
Ji Shi ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Titanium Oxide ◽  
Microcystis Aeruginosa ◽  
Natural Water ◽  
Water Bodies ◽  
Algae Removal ◽  
Removal Efficiencies ◽  
Natural Water Bodies

Fluorine-doped TiO2 was successfully synthesised and applied as algaecide. Studies on algae removal efficiencies and mechanisms illustrated that F-TiO2 was suitable for algae elimination in natural water bodies.

Indigenous Traditional Knowledge in West Jaintia Hills District, Meghalaya

2019 ◽  
Vol 6 (1) ◽  
pp. 37-44
Author(s):  
Diangbha Passah
Keyword(s):  
Traditional Knowledge ◽  
Natural Water ◽  
Local Population ◽  
Value Added ◽  
Water Bodies ◽  
Local Application ◽  
Fish Poison ◽  
Jaintia Hills ◽  
Application Methods ◽  
Natural Water Bodies

Abstract: Indigenous Traditional Knowledge (ITK) is local application methods practiced in different sectors especially in fisheries by local population from time immemorial with some changes from time to time. Many of the ITKs are based on scientific values but they are not well documented. The present study aimed to evaluate the Indigenous Traditional Knowledge practiced in West Jaintia Hills District of Meghalaya. The ITKs identified are divided in three different groups. They are ITK in value added product, ITKs used as fish baits and fish poison and ITKs used as gear for catching fishes from natural water bodies. Keywords: ITK, Jaintia Hills District, Fish poison, Gear, Value added product.

scholarly journals Methodology for cadastral valuation of agricultural lands occupied by water bodies

2020 ◽  
Vol 175 ◽  
pp. 06014 ◽  
Author(s):  
Kirill Zhichkin ◽  
Vladimir Nosov ◽  
Lyudmila Zhichkina ◽  
Mira Alborova ◽  
Aleksey Kuraev
Keyword(s):  
Natural Water ◽  
Agricultural Land ◽  
Water Bodies ◽  
Added Value ◽  
Hydraulic Structures ◽  
Agricultural Lands ◽  
Land Plot ◽  
The Right ◽  
Artificial Water ◽  
Natural Water Bodies

The article considers features of cadastral valuation of agricultural lands occupied by water bodies. The research is based on natural water bodies of the Samara region water fund. A methodology for determining the cadastral value of agricultural lands occupied by artificial water bodies is proposed. The methodology links the land value with the size of the land plot, profit and such objects as dams and other hydraulic structures located within the land plot. The paper confirmed the suggestion that the owner of the land that shall be used for the construction of a pond has the right to the added value of land in the amount of return rate of contributed capital (26.28%). The cadastral value of 1 square meter of agricultural land is 3.11 rubles.

Sign in / Sign up

Export Citation Format

Share Document