scholarly journals Potential human risk of dissolved heavy metals in gold mine waters of Gauteng Province, South Africa

2018 ◽  
Vol 10 (6) ◽  
pp. 56-63
Author(s):  
Kamunda C. ◽  
Mathuthu M. ◽  
Madhuku M.
Keyword(s):  
Heavy Metals ◽  
South Africa ◽  
Gold Mine ◽  
Gauteng Province ◽  
Mine Waters ◽  
Human Risk ◽  
Dissolved Heavy Metals

scholarly journals Neo- and Paleo-Limnological Studies on Diatom and Cladoceran Communities of Subsidence Ponds Affected by Mine Waters (S. Poland)

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1581
Author(s):  
Agnieszka Pociecha ◽  
Agata Z. Wojtal ◽  
Ewa Szarek-Gwiazda ◽  
Anna Cieplok ◽  
Dariusz Ciszewski ◽  
...  
Keyword(s):  
Heavy Metals ◽  
River Flow ◽  
Major Ions ◽  
Sediment Cores ◽  
Harmful Effect ◽  
Mine Waters ◽  
Dissolved Heavy Metals ◽  
Water Plants ◽  
S Poland

Plankton assemblages can be altered to different degrees by mining. Here, we test how diatoms and cladocerans in ponds along a river in southern Poland respond to the cessation of the long-term Pb-Zn mining. There are two groups of subsidence ponds in the river valley. One of them (DOWN) was contaminated over a period of mining, which ceased in 2009, whereas the other (UP) appeared after the mining had stopped. We used diatoms and cladocerans (complete organisms in plankton and their remains in sediments) to reveal the influence of environmental change on the structure and density of organisms. The water of UP pond was more contaminated by major ions (SO42−, Cl−) and nutrients (NO3−, PO43−) than the DOWN ponds. Inversely, concentrations of Zn, Cd, Cu and Pb were significantly higher in sediment cores of DOWN ponds in comparison to those in the UP pond. Ponds during mining had higher diversity of diatoms and cladocerans than the pond formed after the mining had stopped. CCA showed that diatom and cladoceran communities related most significantly to concentrations of Pb in sediment cores. Comparison of diatom and cladoceran communities in plankton and sediment suggests significant recovery of assemblages in recent years and reduction of the harmful effect of mine-originating heavy metals. Some features of ponds such as the rate of water exchange by river flow and the presence of water plants influenced plankton communities more than the content of dissolved heavy metals.

Ascertaining the Role of Leadership on Employee Satisfaction in Market and Social Research Industries in Gauteng Province of South Africa Using Qualitative Research

2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Kingstone Mutsonziwa ◽  
Philip Serumaga-Zake
Keyword(s):  
South Africa ◽  
Employee Satisfaction ◽  
Quantitative Research ◽  
Social Research ◽  
Labour Productivity ◽  
Working Environment ◽  
Gauteng Province ◽  
Career Growth ◽  
Quantitative Results ◽  
Mixed Approach

This paper is based on the study a Doctor of Business Leadership (DBL) thesis titled A Statistical Model for Employee Satisfaction in the Market and Social Research Industries in Gauteng Province. The purpose of this study was to identify the attributes that affect employee satisfaction in the Market and Social Research Industries in Gauteng Province, South Africa. In order to address the overall objective of this study, the researcher used a two-tiered (mixed) approach in which both qualitative and quantitative research methodologies were used to complement and enrich the results. This paper is only based on the qualitative component of the study on leadership aspects based on six leaders (two from Social research and four from Market research) that were interviewed. The leaders were selected based on their knowledge of the industry and the expertise they have. Participation in the survey was voluntary. This paper illustrates the power of the qualitative techniques to uncover or unmask the leadership aspects in the Market and Social Research Industries and also gives the human touch to the quantitative results. It was found that leadership and management within the Market and Social Research Industries in Gauteng Province must ensure that they are accommodative in terms of mentoring their subordinates. The industry is driven by quality driven processes and strong leadership. More importantly, issues of a good working environment, remuneration, career growth, and recognition must always be addressed in order to increase employee satisfaction, reduce staff turnover, and attempt to optimize labour productivity. The qualitative findings also help a deeper understanding of leadership within the industry.

The Vergenoeg: Gauteng Province, South Africa Fluorite Mine

2008 ◽  
Vol 83 (5) ◽  
pp. 410-421 ◽  
Author(s):  
Bruce Cairncross ◽  
Wolfgang Windisch ◽  
Henk Smit ◽  
Allan Fraser ◽  
Jens Gutzmer
Keyword(s):  
South Africa ◽  
Gauteng Province
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