HPI appraisal of concentrations of heavy metals in dynamic and static flow of Ganga River System

2018 ◽  
Vol 22 (1) ◽  
pp. 33-46 ◽  
Author(s):  
Gagan Matta ◽  
Avinash Kumar ◽  
A. K. Tiwari ◽  
Pradeep K. Naik ◽  
R. Berndtsson
Keyword(s):  
Heavy Metals ◽  
River System ◽  
Ganga River ◽  
Static Flow

Heavy Metals Fractionation in Ganga River Sediments, India

2007 ◽  
Vol 132 (1-3) ◽  
pp. 475-489 ◽  
Author(s):  
P. Purushothaman ◽  
G. J. Chakrapani
Keyword(s):  
Heavy Metals ◽  
River Sediments ◽  
Ganga River

Modelling heavy metals in the Buriganga River System, Dhaka, Bangladesh: Impacts of tannery pollution control

2019 ◽  
Vol 697 ◽  
pp. 134090 ◽  
Author(s):  
P.G. Whitehead ◽  
G. Bussi ◽  
R. Peters ◽  
M.A. Hossain ◽  
L. Softley ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Pollution Control ◽  
River System ◽  
Buriganga River

scholarly journals Heavy Metal Assessment of Kavre Valley Basin River System

2019 ◽  
Vol 24 ◽  
pp. 32-34
Author(s):  
Siddhartha Shakya ◽  
Prekshya Gurung ◽  
Anjal Bohaju ◽  
Dipson Ojha ◽  
Bhim Prasad Kafle
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Population Growth ◽  
Waste Disposal ◽  
River System ◽  
City Size ◽  
Uv Spectrophotometry ◽  
Heavy Metal Assessment ◽  
Valley River ◽  
Basin System

Recent population growth, industrialization and unplanned urbanization have led to an increase in untreated waste disposal directly to the river system, including heavy metals. The present investigation was conducted for assessment of heavy metals in the Kavre valley river basin system. Through this basin, two major rivers Punyamata and Roshi along with their tributaries, flow passing through cities (Banepa, Shree Khandapur and Panauti) and the heavy metals selected were Iron (Fe), Chromium (Cr), Manganese (Mn), Lead (Pb), Zinc (Zn) and Cadmium (Cd). Seven sites were selected on the basis of city size and meeting point of tributaries. Fe, Cr and Mn were examined using UV-spectrophotometry whereas Pb, Zn and Cd were determined using AAS. The highest concentration of Cr, Mn, Fe, Cd, Zn, Pb were determined to be 1.9 μg/L, 22.6 μg/L, 514 μg/L, 340 μg/L, 20 μg/L, 80 μg/L, respectively, with Fe, Cd and Pb exceeding the WHO limits.

scholarly journals Fishing methods in upper Ganga River system of Central Himalaya, India

2014 ◽  
Vol 2 (3) ◽  
pp. 195 ◽  
Author(s):  
Gurnam Singh ◽  
Naresh Kumar Agarwal
Keyword(s):  
Water Resources ◽  
Traditional Knowledge ◽  
River System ◽  
Ganga River ◽  
Large Network ◽  
Central Himalaya ◽  
System Study ◽  
Remote Areas ◽  
Fish Resources ◽  
Garhwal Region

Present study on fishing methods in the upper Ganga River system was conducted during the period 2010-2012. Upper Ganga river system consists of two major rivers basins viz. Alaknanda and Bhagirathi rivers and number of their 1st and 2nd order tributaries which flows through Garhwal region (Central Himalaya). This large network of fluvial water resources harbours rich Ichthyofaunal diversity. The varied potential of fish resources from these water bodies permits the utilization of wide array of fishing methods. Most of the fishing methods of the Garhwal region are primitive, based on indigenous traditional knowledge and well suited to turbulent nature of the streams. In present study eighteen fishing methods and gears have been documented from the upper Ganga River system. Study observed season, habitat and species specificity of the fishing methods. The utilization of crude and unscientific fishing methods is frequent in the streams of remote areas resulting into decline in fish resource. All the fishing methods employed in upper Ganga River system are classified into four types. The classification is based on their utilisation up to the level which will allow the sustainable harvesting and proper management of valuable fish resources.

scholarly journals Impacts and vulnerability of inland fisheries to climate change in the Ganga River system in India

2013 ◽  
Vol 16 (4) ◽  
pp. 415-424 ◽  
Author(s):  
M. K. Das ◽  
A. P. Sharma ◽  
S. K. Sahu ◽  
P. K. Srivastava ◽  
A. Rej
Keyword(s):  
Climate Change ◽  
River System ◽  
Ganga River ◽  
Inland Fisheries

scholarly journals First record of exotic alligator gar, Atractosteus spatula (Actinopterygii: Lepisosteiformes: Lepisosteidae), from Ganga River system, India: A possible threat to indigenous riverine fish diversity

2021 ◽  
Vol 51 (4) ◽  
pp. 385-391
Author(s):  
Ranjan Kumar Manna ◽  
Archisman Ray ◽  
Supriti Bayen ◽  
Tanushree Bera ◽  
Debashis Palui ◽  
...  
Keyword(s):  
Environmental Parameters ◽  
River System ◽  
First Record ◽  
Ganga River ◽  
Predatory Fish ◽  
Fish Diversity ◽  
Exotic Fish ◽  
Alligator Gar ◽  
Riverine Fish ◽  
Atractosteus Spatula

A new record of an exotic alligator gar, Atractosteus spatula (Lacepède, 1803), from an open wetland of the Ganga River was presented in this paper and discussed along with the environmental parameters. Entry of the exotic fish into the natural system was probably a result of uncontrolled ornamental fish trading. Considering threats of this predatory fish to become invasive and disturb riverine fish diversity, possible ways to avoid such risk have been discussed.

scholarly journals Nutrient chemistry and eutrophication risk assessment of the Ghaghara River, India

2021 ◽  
Author(s):  
Nirdesh Kumar Ravi ◽  
Atul Srivastava ◽  
Kirpa Ram ◽  
Pawan Kumar Jha
Keyword(s):  
Inorganic Nitrogen ◽  
River System ◽  
Ganga River ◽  
Anthropogenic Sources ◽  
Phosphate Limitation ◽  
Molar Ratio ◽  
Specific Yield ◽  
Dissolved Silica ◽  
Molar Ratios ◽  
Nutrient Chemistry

Abstract This study was carried out to evaluate the eutrophication risk associated with the nutrient flux from the Ghaghara river by using nutrient molar ratios and indicators for coastal eutrophication potential values. The concentration of ammonium (3–8 times), nitrate (3–10 times), and phosphate (3–4.5 times) in the Ghaghara river were higher than the reported value for the unpolluted rivers indicating the contribution from the anthropogenic sources. The dissolved nutrients concentration showed significant seasonal variations in the Ghaghara river system. The specific yield of nitrate-N, phosphate-P, and dissolved silica-Si from the Ghaghara river were 0.49, 0.03 and 0.96 tons km−2 yr−1 respectively. The average molar ratio for dissolved inorganic nitrogen (DIN)/Dissolved inorganic Phosphate (DIP) was above 16:1, indicated phosphate limitation in biological productivity. In contrast, an average molar ratio of Dissolved inorganic Silica (DSi)/DIN of 4.6 ± 4.4 favored the diatom growth in the Ghaghara river. The negative value of P-ICEP (-2.93 kg C. km−2day−1) indicated phosphate limitation in the Ghaghara river. The positive value of N-ICEP (1.71 kg C·km−2day−1) indicates an excess of nitrogen over silica transport from the Ghaghara river to the Ganga river, which can create an eutrophication problem in the Ganga river.

scholarly journals Heavy Metal Contamination and Ecological Risk Assessment in Fluvial Sediment of San Juan –Taxco River System in Mining Region of Taxco Guerrero, Mexico

2021 ◽  
Author(s):  
Edith R. Salcedo Sanchez ◽  
Manuel Martínez Morales ◽  
Juan Manuel Esquivel Mart ◽  
Oscar Talavera Mendoza
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Biological Effects ◽  
Ecological Status ◽  
River System ◽  
Risk Identification ◽  
San Juan ◽  
Mining District ◽  
Geochemical Indices ◽  
Very High

Abstract The hydrological system of San Juan-Taxco Rivers in located inside of one of the oldest and major mining district in Mexico. Several communities in the area use the rivers water along its flow for domestic water supply and crop irrigation. Sediment is an essential, integral and dynamic part of river basins, in polluted environments these act as sink of heavy metals and as a source of contaminants on the fluvial system. The management and sustainability of sediment should be assessed and secured to achieve good ecological status of the basins, for this task, approaches as ecological risk identification and geochemical indices are being used.Superficial sediment samples were collected in San Juan-Taxco river system. The results demonstrated that the degree of pollution from thirteen heavy metals and metalloids studied decreases in the following sequence: Cd> Zn > Pb > Cu > As > B > Mn > Ni > Fe > Co > Ba > Al and Cr. Cd made the most dominant contribution. Geochemical indices revealed important external anthropogenic influences in the rivers. The geochemical indices indicated very high enrichment for As, Cu, Pb and Zn, and extremely high for Cd in the three-rivers. The calculation of Pollution Load Index (PLI) showed in Cacalotenago River and in Taxco River are the sites with the highly contaminated sediments. PLI values were very high in all the samples sites due mining tailings erosion, wastewater and agriculture run off. Cd, Zn, Pb, Cu and As were the main potential risk elements that will cause harmful biological effects in the riverine environment.

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