scholarly journals Larvae of Ephemeroptera group as bioindicators of water quality of the South Ural rivers

2017 ◽  
Vol 6 (4) ◽  
pp. 87-93
Author(s):  
Boris Yuryevich Chaus
Keyword(s):  
Water Quality ◽  
Oxygen Consumption ◽  
Environmental Monitoring ◽  
Regression Models ◽  
Chemical Characteristics ◽  
The South ◽  
River Waters ◽  
Nitrite Nitrogen ◽  
State Water

The paper contains the analysis of a possibility to use green drakes larvae of Ephemeroptera group for bioindicator researches during environmental monitoring of the South Ural rivers. Collection and analysis of types constancy of green drakes larvae was carried out in 2005 to 2016 in 17 state water posts on the territory of the South Ural rivers. As chemical characteristics the author used the index of content of compounds of manganese, nickel and iron, oil products, phenols, nitrogen ammonium, coppers, zinc, chemical oxygen consumption (COC), biological oxygen consumption in 5 days (BOC5), sulfates, chlorides, nitrite nitrogen in river waters. In total constancy dynamics of 13 species larvae of mayflies was analyzed. The author has made a list of constant, additive and casual types of representatives of Ephemeroptera group. Significant correlative dependences between constancy of larvae of species of mayflies with a number of hydrochemical indexes are revealed statistically. The paper contains regression models for the constancy forecast of larvae of green drakes depending on concentration of the pollutant.

scholarly journals Representatives of caddis flies of Integripalpia suborder in the system of environmental monitoring of the South Ural rivers

2017 ◽  
Vol 6 (3) ◽  
pp. 51-56
Author(s):  
Boris Yuryevich Chaus
Keyword(s):  
Environmental Monitoring ◽  
Regression Models ◽  
Ammonium Nitrogen ◽  
The South ◽  
River Waters ◽  
Nitrite Nitrogen ◽  
Caddis Flies ◽  
State Water ◽  
Water Impurity ◽  
First Time

In the following paper the author tries to find a possibility to use larvae of caddis flies of Integripalpia suborder to increase a significance of bioindicator researches during environmental monitoring of the South Ural rivers. Analysis of caddis flies types constancy was carried out in 17 state water posts on the rivers flowing across the territory of South Ural from 2005 to 2016. As chemical characteristics such indexes as content in river waters of compounds of manganese, nickel and iron, oil products, phenols, ammonium nitrogen, coppers, zinc, COD, BOD5, sulfates, chlorides, nitrite nitrogen were used. Specific combinatorial index of water impurity was used as a complex index. In total constancy evolution of 7 species of larvae of caddis flies of Integripalpia suborder was analyzed. Its the first time the author has made a list of constant, additive and casual types of Integripalpia on the studied territory. The author has revealed significant correlative dependences between constancy of larvae of species of caddis flies with a number of hydro chemical indexes. The author has made regression models used to forecast constancy of larvae of Integripalpia suborder types depending on concentration of the pollutant containing in river waters.

scholarly journals Variation Characteristics of the Main Hydrochemical Indexes in Typical Subterranean Rivers in the South China Karst Region Based on Curve Fitting

2019 ◽  
Vol 2019 ◽  
pp. 1-13
Author(s):  
Shuyi Liu ◽  
Chuan Liang ◽  
Lina Wang ◽  
Lingwei Zeng ◽  
Chunyi Wang
Keyword(s):  
Water Quality ◽  
South China ◽  
Spline Interpolation ◽  
Correlation Coefficients ◽  
Industrial Society ◽  
Karst Region ◽  
The South ◽  
Karst Areas ◽  
Variation Characteristics

The water quality of subterranean rivers in the South China Karst region has undergone dramatic changes resulting from industrial and social development over the past 60 years. The combination of sampling results from subterranean rivers in four typical study areas in the South China Karst region from October to December 2015 (dry season) and correlation analysis using SPSS revealed that the main ions K+, Na+, and SO42- exhibited a significant correlation (p<0.01) and that Ca2+, HCO3-, and Mg2+ exhibited a good correlation (p<0.01). Additionally, we consolidated the data collected since 1960 and, by applying MATLAB, a variety of fitting curve methods were used to fit all the data, and the results showed that cubic spline interpolation fitting performed the best. The squared correlation coefficients (R2) of the obtained fitting curves for Ca2+, HCO3-, and Mg2+ are 0.8545, 0.8689, and 0.7632, respectively, and the corrected R2 values are 0.6739, 0.7088, and 0.4853, respectively. The R2 values of the obtained fitting curves for K+, Na+, Cl-, SO42-, and NO3- are 0.9085, 0.8964, 0.7531, 0.6222, and 0.7997, respectively, and the corrected R2 values are 0.7904, 0.7669, 0.5272, 0.2815, and 0.6127, respectively, indicating excellent fits. Based on the fitting curves, the overall water quality conditions in the karst region were analyzed and compared. Finally, the development of subterranean rivers in the South China Karst region was determined. Based on the results, the following conclusions can be drawn: the development of the subterranean rivers is indeed a slow process, but water quality can change rapidly in response to the transformation of industrial society. Additionally, the results indicate the crucial importance of urban planning that takes into account environmental protection during development in karst regions. This study aims to provide a basis for the management of karst areas and the improvement of groundwater quality by evaluating geochemical processes.

scholarly journals Hydroecological monitoring of the quality of river waters of the Amudarya river basin in the territory of Uzbekistan

2019 ◽  
Vol 01 (01) ◽  
pp. 12-18
Author(s):  
CHembarisov Elmir Ismailovich ◽  
Mirzakobulov ZHahongir Bahtiyarovich ◽  
Rahimova Matluba Naimovna ◽  
Rasulov Bahadyr Olim ◽  
Tillaeva Zarina Umarovna
Keyword(s):  
Water Quality ◽  
River Basin ◽  
Surface Waters ◽  
Irrigated Agriculture ◽  
Irrigation Water Quality ◽  
Quality Performance ◽  
River Waters ◽  
The Republic ◽  
Scientific Base

The article considers the problems of irrigation water quality in Central Asia through hydroecological monitoring. Practical and scientific recommendations for solving these problems are offered. There are noted the necessity of development of scientific base of researches on all aspects of water quality and protection of water resources; adoption of laws and administrative documents on protection of waters and improvement of their quality; performance of various engineering, technological actions. The hydroecological state of surface waters of large irrigated areas of the Amudarya river basin was studied for regieon: Surkhandarya, Kashkadarya, Khorezm and irrigated zones of the Republic of Karakalpakstan. It is noted that the process of salinization of irrigated lands is dangerous for the region. According to the calculations 50...55 million tons of various salts are came to irrigated annually fields. This is the reason for the deterioration of the hydrological state of irrigated agriculture in the region.

scholarly journals Changes of water quality in the Łutownia and Perebel rivers in the Białowieża Primeval Forest

2016 ◽  
Vol 77 (4) ◽  
pp. 380-388 ◽  
Author(s):  
Magdalena Janek
Keyword(s):  
Water Quality ◽  
Forest Cover ◽  
Limit Values ◽  
River Waters ◽  
Carbon And Nitrogen ◽  
Primeval Forest ◽  
Legal Standards ◽  
High Concentrations ◽  
Białowieża Primeval Forest

Abstract The aim of the study was to determine changes in water quality, including chemistry of outflow from two rivers: Łutownia and Perebel located in the Białowieża Primeval Forest. Water chemistry was investigated once in every three months in the years 2011-2014. Catchments differed in forest cover and habitat types. The results of the analysis of river waters were compared with the limit values for each class of water quality as settled by the legal standards. It was found that the quality of the water in rivers declined due to high concentrations of carbon and nitrogen organic forms. In general, there was observed a decrease of the concentration of organic nitrogen and an increase of the concentration of mineral nitrogen, especially in the Perebel catchment area.

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