scholarly journals Ecological and chemical characteristics of small river Arguzikha (Zeya-Bureya plain, Russia)

2020 ◽  
Vol 203 ◽  
pp. 03001
Author(s):  
Antonina Pakusina ◽  
Tatyana Platonova
Keyword(s):  
Heavy Metals ◽  
River Water ◽  
Myriophyllum Spicatum ◽  
Ammonium Nitrogen ◽  
Left Bank ◽  
Amur River ◽  
High Oxygen Content ◽  
The Amur River ◽  
Toxic Concentrations ◽  
Water Bottom

The article considers the results of research from 2015 to 2019 on the study of hydrochemical indicators and the content of heavy metals in the ecosystem components of the small Arguzikha river , a left-Bank tributary of the Amur river (water, bottom sediments, macrophytes, birds ’ feathers). High oxygen content in the water (8.8-15.9 mgO2/dm3) and high BOD5 values (6-12 mgO2/dm3) in the middle and lower reaches of the Arguzikha river indicate the process of eutrophication. The value of permanganate oxidability (6.8-15.5 mgO/dm3) characterizes the high content of organic substances in water. In the spring, nitrate nitrogen (3.45-6.39 mgN-NO3-/dm3) was found in the water of the Arguzikha river, which had a pyrogenic origin. In the summer the rainy season was dominated by ammonium nitrogen (2.34 mgN-NН +/dm3). The high content of total phosphorus (0.337-0.609 mg/dm3) in the river water was in the spring. In the spring of 2015, the concentration of lead in the lower reaches of the river reached 6.36 µg/dm3, during the subsequent time, the lead content in the Arguzikha water was less than the MPC. Toxic concentrations of lead (> 30 mg / kg) and manganese (> 300 mg/kg) were found in macrophytes of Nymphoides peltata and Myriophyllum spicatum. In the feathers of waterfowl of the Arguzikha river the content of heavy metals decreases in a row Fe>Zn>Cu>Pb>Mn>Сг>Ni>Cо>Cd. The feathers of Anas acuta and Anas querquedula contained Pb 17.7 mg/kg and 22.2 mg/kg, Cd 0.15 mg/kg and 0.08 mg/kg, respectively.

scholarly journals Seasonal and spatial variability of the ammonium nitrogen content in the Amur River near Khabarovsk in 2018–2019

2020 ◽  
Author(s):  
В.П. Шестеркин ◽  
Н.М. Шестеркина
Keyword(s):  
Winter Season ◽  
High Water ◽  
Ammonium Nitrogen ◽  
Ice Formation ◽  
Left Bank ◽  
Regulated Rivers ◽  
Amur River ◽  
Winter Runoff ◽  
The Amur River ◽  
The Right

Представлены результаты наблюдений за содержанием аммонийного азота в воде р. Амур у г. Хабаровск в 2018–2019 гг. Максимальные значения установлены в правобережной и средней части русла в 2018 г. в начале ледостава (0.37 мг N/дм3), в 2019 г. в конце ледостава (0.32 мг N/дм3). Наименьшие значения зимой отмечены в левобережной части русла Амура из-за влияния зарегулированных рек Зея и Бурея. Показано постепенное снижение концентрации аммонийного азота в течение зимнего периода в 1.5 раза в 2018 г. и возрастание в 2.4 раза в 2019 г. Выявлено снижение концентраций в зимнюю межень 2018–2019 гг. по сравнению с периодом 2011–2013 гг. в 1.9 раза, что свидетельствует об улучшении качества воды р. Сунгари, а соответственно и Среднего Амура. В период открытого русла содержание аммонийного азота по сравнению с зимней меженью ниже и не превышает 0.1 мг N/дм3. Наибольшие значения наблюдаются в правобережной и средней части русла во время половодья и на подъеме паводков, сформированных в бассейнах рек Уссури и Сунгари. Показано, что на гребне катастрофического паводка, сформированного в Забайкальском крае в 2018 г., и очень сильного паводка в 2019 г. содержание аммонийного азота не превышало 0.05 мг N/дм3. Установлено, что содержание аммонийного азота в левобережной части русла, а в межпаводочный период по всей ширине Амура находится ниже предела обнаружения. The results of observations over the content of ammonium nitrogen in the water of the Amur River near Khabarovsk in 2018–2019 are presented. The maximum values were determined in the right-bank and middle parts of the riverbed in 2018 at the beginning of ice formation (0.37 mg of N/dm3) and in 2019 at the end of ice formation (0.32 mg of N/dm3). The minimum values were observed in winter in the left-bank part of the Amur riverbed due to effect of the regulated rivers of Zeya and Bureya. The gradual decline in the concentration of ammonium nitrogen 1.5 times during the winter season of 2018 and growth 2.4 times in 2019 are shown. The decrease in concentrations 1.9 times during the winter runoff low of 2018–2019 in comparison with period of 2011–2013 was revealed which gives evidence of the water quality improvement in Sungari River and, respectively, in the middle reaches of Amur River. In the period of free channel, the content of ammonium nitrogen is lower in comparison with the same during winter low-water level and does exceed 0.1 mg of N/dm3. The maximum values are observed in the right-bank and middle parts of the riverbed during high water and on the rise of floods formed in the catchments of the Ussuri and Sungari Rivers. It was demonstrated that in the top of the catastrophic flood formed in the Trans-Baikal Territory in 2018 and very strong flood in 2019, the content of ammonium nitrogen did not exceed 0.05 mg of N/dm3. It has been established that the content of ammonium nitrogen in the left-bank part of riverbed and in the peak-flood interval across the whole width of the Amur River is below detection limit.

Heavy Metals in the Water, Bottom Sediments, and in the Muscles of Fishes of the Amur River

2011 ◽  
Vol 47 (5) ◽  
pp. 102-112 ◽  
Author(s):  
L. M. Chukhlebova ◽  
N. V. Berdnikov ◽  
N. M. Panasenko
Keyword(s):  
Heavy Metals ◽  
Bottom Sediments ◽  
Amur River ◽  
The Amur River ◽  
Water Bottom

INFLUENCE OF THE ECOLOGICAL STATE OF THE SEREPOK RIVER (VIETNAM) ON ACCUMULATION OF HEAVY METALS IN ORGANS OF FISH

2017 ◽  
pp. 98-105
Author(s):  
Ngo The Cuong ◽  
Tran Hoan Quoc ◽  
Svetlana Vasilievna Zolotokopova
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
River Water ◽  
Bottom Sediments ◽  
Heavy Metal Concentration ◽  
Industrial Areas ◽  
Industrial Regions ◽  
Cadmium Lead ◽  
Sarotherodon Galilaeus ◽  
Water Bottom

The article focuses on the study of change of containing heavy metals (zinc, copper, iron, cadmium, lead, arsenic) in the abiotic and biotic components of the Serepok river (Vietman) influenced by wastewater discharge from industrial areas. Heavy metal content was determined in the river water and bottom sediments in the four zones: above and within the boundaries of industrial regions Xoa Phu and Tam Thang and in two water reservoirs situated below the boundaries of those industrial areas. Tilapia Galilean ( Sarotherodon galilaeus ), Hemibagrus ( Hemibagrus ), and sazan ( Cyprinus carpio ) caught in these areas were the hydrobionts under study in which liver, gills, skeleton and muscles accumulation of heavy metals was detected. In the organs of fish caught in the river within industrial region, heavy metals concentration was 3-7 times higher. The greatest concentration of heavy metals was found in the liver and gills of fish caught in the boundaries of industrial regions, the least concentration was in the muscles. In most cases, significant correlation between heavy metal concentration in organs of fishes and in river water, bottom sediments has been revealed.

scholarly journals Spatial and Seasonal Variability of the Middle Amur Water Chemical Composition

2012 ◽  
pp. 18-28
Author(s):  
Keyword(s):  
Chemical Composition ◽  
River Water ◽  
Economic Activity ◽  
Seasonal Variability ◽  
Matter Content ◽  
Amur River ◽  
Water Chemical Composition ◽  
Dissolved Matter ◽  
The Amur River

Spatial and seasonal variability of the middle Amur River water chemical composition has been discussed. The economic activity influence on the dissolved matter content has been shown. The Sungari River priority role in removal of nitrogen and phosphorous mineral forms to the Amur River has been stated.

scholarly journals TRACE ELEMENTS IN THE AQUATIC ECOSYSTEMS OF THE AMUR RIVER

2011 ◽  
pp. 32-39
Author(s):  
N. Chizhikova ◽  
S. Sirotsky ◽  
G. Haritonova ◽  
E. Utkina
Keyword(s):  
Trace Elements ◽  
Bottom Sediments ◽  
Aquatic Ecosystems ◽  
Surface Complexes ◽  
Amur River ◽  
Biological Objects ◽  
Zn And Cu In ◽  
The Amur River ◽  
Microelement Composition ◽  
Water Bottom

The microelement composition of the water-bottom sediments-macrophytes-macrophytes-macrofauna system was considered р. Cupid. Installed minimal and the maximum concentrations of trace elements in of its individual components. It is shown that the content of microelements in biological objects decreases in the following order: algae > macrophytes > ichthyofauna. The most informative biological object of microelement accumulation in the Amur ecosystem are algae. Accumulation of Fe, Mn, Zn and Cu in bottom sediments is associated with the formation surface complexes of metal cations with clay minerals and with their accumulation of diatoms.

scholarly journals Impact assessment of solid runoff on heavy metals migration during high floods on the Amur river

2021 ◽  
Vol 895 (1) ◽  
pp. 012025
Author(s):  
A N Makhinov ◽  
A F Makhinova ◽  
Sh Liu
Keyword(s):  
Molecular Mass ◽  
Chemical Interaction ◽  
Chemical Elements ◽  
Chemical Compounds ◽  
Left Bank ◽  
Amur River ◽  
Neutral Compounds ◽  
The Amur River ◽  
The Right

Abstract Inhomogeneity of the concentrations of chemical elements in the cross-section of the Amur River is considered as a function of the state of their soluble and suspended forms. Flooding of wetlands and urbanized areas contributes to the removal of pollutants into the river channel. The wide spread of fens on the left bank contributes to the concentration of organic matter along the left bank of the river. Terrigenous material mostly comes from the right bank, where agricultural fields are concentrated. The ratio of their concentrations is maintained by the duration of the flood. The mechanisms of redistribution of elements between their suspended and soluble forms have been studied. The mechanisms of sorption of chemical compounds on mineral and organic colloids are described. It was found that mineral colloids with a negative charge due to electrostatic attraction sorb electrically neutral compounds (hydroxoaqua complexes [Mn(OH)2(OH2]0, ammonia [Cu(NH3)4(OH)2]0. The role of organic material in the redistribution of chemical compounds between soluble and suspended forms is shown. Organic colloids with molecular mass > 5.0 kDa precipitate complex cations – [FeHSO4]+, [FeHSO4]2+, [CuHSO4]+. An organic substance with a molecular mass of <2.0 kDa has a greater complexing ability for Fe(2)3+, Cu2+, Zn2+, Mn2+ ions. They bind metals to organo-mineral complexes by chemical interaction and form mobile organo-mineral complexes and heteropolar salts.

scholarly journals BASIS FOR SELECTION OF RIVERS FOR MONITORING ON THE STOCKS OF CHUM AND PINK SALMON IN THE AMUR RIVER

2019 ◽  
Vol 199 ◽  
pp. 19-34
Author(s):  
S. F. Zolotukhin
Keyword(s):  
20Th Century ◽  
River Basin ◽  
Chum Salmon ◽  
Pink Salmon ◽  
Species Number ◽  
Amur River Basin ◽  
Left Bank ◽  
Amur River ◽  
Spawning Grounds ◽  
The Amur River

The monitoring of chum and pink salmon escapement to spawning grounds in the Amur River basin was stopped in 2009. To start it again, a proved choice of the rivers is necessary for adequate controlling of these species number, by the spawning habitats of their population groups within the basin. For this purpose, results of the monitoring in 1949–2000 and the data on human settlements in the medieval times are analyzed. The lower reaches of the Amur were anciently inhabited by the paleoasiatic Nivkh people and the upper reaches where the fall chum spawned in spring waters were inhabited by the people of Pokrovskaya archeological culture — their burial grounds coincided with the spawning area of fall chum salmon. To reach these spawning grounds, fall chum salmon migrated up to the distance of 3427 km from the Amur mouth, but since the 20th century they occur rarely in the upper reaches of the Amur, in particular within Chinese territory where they are not observed in more than 50 years; recently they spawn in spring waters at the distance 500–1200 km from the Amur mouth, mainly in its right tributaries. The reproduction centers of other two populations of chum salmon, as the summer chum and fall chum breeding in hyporheic waters, are located in the Amgun River basin (the lower left tributary of the Amur). The fourth population is the lake chum salmon breeding in spring waters of Lake Chlya located on the left bank in the lower reaches of the Amur River. Centers of reproduction for both pink salmon populations, differentiated by even and odd years of spawning, are located in the Amgun River. Several test rivers are selected within all mentioned centers of reproduction, they are: Kerbi, Duki, Im, Somnya, Aksha, Khilka, Beshenaya, Gur, Anui, Khor, Kur, and Bira. This list is similar to the list of the rivers where chum and pink salmons were monitored in the 20th century

scholarly journals On the unusual distribution of modified Amur River water in the Aniva Bay (Sakhalin) in November 2001

2021 ◽  
Vol 5 (2) ◽  
pp. 172-178
Author(s):  
G.V. Shevchenko ◽  
◽  
V.N. Chastikov ◽  
◽  
Keyword(s):  
River Water ◽  
River Runoff ◽  
Eastern Coast ◽  
Marine Biota ◽  
Amur River ◽  
Late Autumn ◽  
Unusual Distribution ◽  
Aniva Bay ◽  
The Amur River ◽  
Vast Area

In addition to the distribution of modified water of the Amur River runoff in the Aniva Bay, remote from its mouth, according to the data from 2012–2013 (Shevchenko G.V., Chastikov V.N. Distribution of the Amur waters in the eastern part of the Aniva Bay in late autumn. Meteorology and Hydrology, 2021, no. 1), the materials of the oceanological survey carried out in this basin in mid-November 2001 are presented. It is shown that desalinated water entered the bay in an unusually wide stream in the upper 30-meter layer and occupied a vast area, almost to the middle of the bay. At the same time, the differences in salinity with local waters were less than usual. The most probable reason for such specific features of oceanological conditions in 2001 was an increase (by about 30% in comparison with the usual values) of the wind of west-northwest rhumb of an offshore character. The obtained results show that the influence of this water can manifest itself not only near the eastern coast of the bay, as was demonstrated in the mentioned article, but also at a distance of more than 30 km from it. Accordingly, abrupt decreases in salinity can affect the marine biota not only of the coastal complex, but also inhabiting the central part of the bay.

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