Artisanal Gold Mining and Surface Water Pollution in Ghana: Have the Foreign Invaders Come to Stay?

2013 ◽  
Vol 6 (3) ◽  
pp. 94-102 ◽  
Author(s):  
Frederick Ato Armah ◽  
Isaac N. Luginaah ◽  
Joseph Taabazuing ◽  
Justice O. Odoi
Author(s):  
Constantin Bulimaga ◽  
◽  
Corina Certan ◽  

Regardless of the fact that both urban ecosystems studied – Orhei and Telenești – have purification stations, they are still an essential source of surface water pollution. The aqueous soil extract (Telenești) has a pH value of 8 up to 9.8 due to the high content of calcium and potassium in the soil, due to the fact that the area under investigation has a specific character caused by the spread of solonetz-type soils, solonized chernozems, and salinated soils. The anthropogenic impact in urban ecosystems produces an imbalance in the ratio of spontaneous species and ruderal and ruderal-segetal species. The number of spontaneous species is the indicator of the degree of anthropization in urban ecosystems. Urban ecosystems have a major impact on the environment.


2019 ◽  
Vol 16 (2) ◽  
pp. 51-58
Author(s):  
Nail Minigazimov ◽  
Elnara Khaidarshina ◽  
Rafil Abdrahmanov ◽  
Valentina Safarova ◽  
Galina Shaidullina ◽  
...  

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