The Runoff Declining Process and Water Quality in Songhuajiang River Catchment, China under Global Climatic Change

2012 ◽  
Vol 40 (4) ◽  
pp. 394-401 ◽  
Author(s):  
Xingmin Mu ◽  
Ying Li ◽  
Peng Gao ◽  
Hongbo Shao ◽  
Fei Wang
Keyword(s):  
Water Quality ◽  
Climatic Change ◽  
River Catchment ◽  
Global Climatic Change

scholarly journals Spatial Variation of Water Chemistry in Aries River Catchment Western Romania

2021 ◽  
Vol 11 (14) ◽  
pp. 6592
Author(s):  
Ana Moldovan ◽  
Maria-Alexandra Hoaghia ◽  
Anamaria Iulia Török ◽  
Marius Roman ◽  
Ionut Cornel Mirea ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Water Chemistry ◽  
Water Samples ◽  
Mine Drainage ◽  
Pollution Indices ◽  
Mining Activities ◽  
River Catchment ◽  
High Concentrations ◽  
The Impact

This study aims to investigate the quality and vulnerability of surface water (Aries River catchment) in order to identify the impact of past mining activities. For this purpose, the pollution and water quality indices, Piper and Durov plots, as well vulnerability modeling maps were used. The obtained results indicate that the water samples were contaminated with As, Fe, Mn, Pb and have relatively high concentrations of SO42−, HCO3−, TDS, Ca, K, Mg and high values for the electrical conductivity. Possible sources of the high content of chemicals could be the natural processes or the inputs of the mine drainage. Generally, according to the pollution indices, which were correlated to high concentrations of heavy metals, especially with Pb, Fe and Mn, the water samples were characterized by heavy metals pollution. The water quality index classified the studied water samples into five different classes of quality, namely: unsuitable for drinking, poor, medium, good and excellent quality. Similarly, medium, high and very high vulnerability classes were observed. The Durov and Piper plots classified the waters into Mg-HCO3− and Ca-Cl− types. The past and present mining activities clearly change the water chemistry and alter the quality of the Aries River, with the water requiring specific treatments before use.

scholarly journals Predicting impacts of global climatic change on genetic and phylogeographical diversity of a Neotropical treefrog

2021 ◽  
Author(s):  
Tatianne P. F. Abreu‐Jardim ◽  
Lucas Jardim ◽  
Liliana Ballesteros‐Mejia ◽  
Natan M. Maciel ◽  
Rosane G. Collevatti
Keyword(s):  
Climatic Change ◽  
Global Climatic Change

scholarly journals Situation analysis of water quality in the Umtata River catchment

Water SA ◽  
2001 ◽  
Vol 27 (4) ◽  
Author(s):  
OS Fatoki ◽  
NYO Muyima ◽  
N Lujiza
Keyword(s):  
Water Quality ◽  
Situation Analysis ◽  
River Catchment
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