Community perception of air pollution: health and environmental impact of manganese operations at PE port
- Authors: Mtati, Vuyani
- Date: 2019
- Subjects: Air -- Pollution -- South Africa -- Port Elizabeth , Manganese -- Environmental aspects -- South Africa -- Port Elizabeth Manufacturing industries Environmental health Sustainable development
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/41919 , vital:36609
- Description: The Mining industry in South Africa is viewed as the backbone of the country’s economy; however, while benefiting from this engine of economic development, its impact on the environment and health has been of major concern to different stakeholders. The majority of people acknowledge the role of mining in the economy and the country. Others put more emphasis on public health and the environment. Furthermore, manganese plays an important role in the economic growth and development within the Eastern Cape Province. Responding to recent public concern over manganese dust emissions, Port of Port Elizabeth manager, Rajesh Dana, outlined a five-point manganese management plan formulated by Transnet. Mr. Dana stated the following: “We do not dispute the fact that our manganese operation in the Port of Port Elizabeth creates an inconvenience to port tenants and residents. However, as a responsible corporate citizen we have superior operational and compliance controls in place to mitigate these negative impacts.” Some of the concerns raised by community members are that the manganese ore dust has long term negative effects on the health of this city’s residents, the marine life, as well as the properties within, roughly, a 5km (own opinion estimate) radius of the tanks. Port Elizabeth (Nelson Mandela Bay) has the potential to become a tourism and economic hub within this radius and beyond, and by removing this hazard it will allow for a green environment to be established that gives all the citizens as well as tourists, a place to take part in a healthy lifestyle. Some believe that the city, specifically the CBD area, has the potential to be world renowned for green innovations but having a major hazard in the way, which can be moved to, and better controlled at, Coega IDZ, is not only damaging to the health of its citizens but also the economy of the city. Air pollution affects both physical and human environments. Often, communities that are in close proximity to pollution sources are more vulnerable and experience its greatest effect. As a result, many residents complain of negative health related impacts caused by air pollution which is attributed to industries located close to these communities. About two million deaths annually are attributed to urban air pollution worldwide, which is an indication that air pollution remains an enormous health risk to people. Due to the health impacts on humans, air pollution has also been negatively categorised based on perceptions around the world. The aim of the study was to assess the impact of environmental pollution and public health on the South End, Humewood and Humerail occupants and their perceptions of air quality effects and health risks from the Transnet manganese operation in Port Elizabeth. The present study can be described as a quantitative descriptive survey that uncovered serious levels of pollution in the said areas that had dire health consequences for the people involved. The findings of the study indicate that residents live with the constant dust of a variety of chemical pollutants released both by normal Port operations and by periodic incidents caused by other polluters. They experience chronic respiratory symptoms, burning eyes, hearing deficiency and skin irritations. The study revealed that environmental pollution consequences affecting residents are inversely related to distance from the Port. The results obtained in this study are evidence that environmental pollution, especially manganese in the area, is a definite risk to the health of people living within the surrounding area. Although indicating the need to carry out a comprehensive study, the results call for immediate action to engage community members in order for them to understand the risks associated with the Port operations and prevent continued public over-exposure to environmental pollution.
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- Date Issued: 2019
Characterization and ecology of selected micro-estuaries and micro-outlets in the Eastern Cape province, South Africa
- Authors: Magoro, Mandla Leon
- Date: 2018
- Subjects: Estuarine ecology -- South Africa -- Eastern Cape , Estuaries -- Management Estuaries -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/31644 , vital:31640
- Description: South Africa has more than 200 Temporarily Open/Closed Estuaries (TOCEs) along its approximately 3000 km coastline. In addition, there are approximately 200 micro-estuaries and micro-outlets on the subcontinent, many of which share some of the characteristics with TOCEs but differ in that they are supplied by localised coastal stream catchments with a more limited supply of freshwater and less connectivity to the marine environment. Between 2015 and 2016, this study endeavoured to investigate the physico-chemical properties, microalgal dynamics as well as the seasonal species abundance and composition of aquatic invertebrates and fishes in four micro-estuaries and four micro-outlets along the warm-temperate section of the Eastern Cape coast. The micro-outlets were dominated by oligohaline or freshwater conditions, while the micro-estuaries were mostly mesohaline. Microalgal biomass in these systems was influenced by temperature, nutrient conditions and light availability. Chironomidae and Ephemeroptera dominated benthic macro-invertebrate communities in the micro-outlets, while Amphipoda and Mysida were most dominant in micro-estuaries. Copepoda and Amphipoda dominated the zooplankton assemblages in both system types. Nekton communities in micro-outlets were dominated by juvenile Myxus capensis and tadpoles (mostly Xenopus laevis), while Oreochromis mossambicus, Gilchristella aestuaria, M. capensis and Mugil cephalus were the four most common species in the micro-estuaries. Seasonal variations in physico-chemical parameters and community composition of both the nekton and invertebrates were recorded during this study. Micro-estuaries and micro-outlets exhibited relatively lower diversity and abundances of biota than TOCEs. Furthermore, the micro-estuaries have a low estuarine function when compared to TOCEs, while the micro-outlets have very limited estuarine characteristics and were dominated by freshwater biota. The micro-systems are smaller in size and contain lower proportions of estuary-associated taxa when compared to larger estuarine systems such as TOCEs and permanently open estuaries. The results of this study confirm that there are distinctions between the biota of iv the two micro-system types, thus making biotic assemblages, together with physico-chemical parameters, a viable tool for differentiating between micro-estuaries and micro-outlets. This study represents the first investigation into the ecological functioning of micro-estuaries and micro-outlets. As a whole, micro-systems serve as nursery areas for freshwater-associated invertebrate taxa. Due to their limited periods of stability, micro-estuaries serve as intermediate nursery areas for 0+ juveniles of estuary-associated marine fish which, after less than a year, then migrate to larger estuarine systems located nearby. The small catchment size and short period of stability in these systems heightens their level of sensitivity to water flow alterations through dams, direct water abstraction, afforestation and watercourse diversion, while their lower buffering capacity makes them more susceptible to pollution and nutrient inputs from intensive agricultural activities and urban expansion.
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- Date Issued: 2018
Strategies for the implementation of clinical practice guidelines in the intensive care : a systematic review
- Authors: Mpasa, Ferestas
- Date: 2014
- Subjects: Systematic reviews (Medical research) , Physician practice patterns , Intensive care units
- Language: English
- Type: Thesis , Masters , MCur
- Identifier: vital:10059 , http://hdl.handle.net/10948/d1020046
- Description: Implementation strategies for the use of clinical practice guidelines are an integral component in bridging the gap between the best research evidence and clinical practice. However, despite some remarkable investments in health research regarding clinical practice guidelines implementation strategies, it is not yet known which of these are the most effective for intensive care units. The purpose of this research study was to systematically identify and /or search, appraise, extract and synthesize the best available evidence for clinical practice guidelines implementation strategies in intensive care units, in order to develop a draft guideline for clinical practice guidelines implementation strategies in the intensive care units. A systematic review design was used to systematically identify and /or search, appraise, extract and synthesize the best available evidence from the eligible included Level 2 studies (randomized controlled trials and quasi-experimental studies). Level 2 studies were applicable because they present robust evidence in the research results regarding effectiveness of clinical practice guideline implementation strategies. Furthermore, although other systematic reviews conducted in this area before, they included studies of In addition, no systematic review was identified that reviewed Level 2 studies and developed a guideline for clinical practice guideline implementation strategies in the intensive care units. Hence, including only Level 2 studies was distinctive to this research study. Databases searched included: CINAHL with full text, Google Scholar, Academic search complete, Cochrane Register for Randomized Controlled Trials Issue 8 of 12, August 2013, and MEDLINE via PUBMED. Hand search in bound journals was also done. The search strategy identified 315 potentially relevant studies. After the process of critical appraisal, thirteen Level 2 studies were identified as relevant for the review. Of the 13 relevant studies, 10 were randomized controlled trials and three were quasi experimental studies. After the critical appraisal ten RCTs were included in the systematic review. Three studies (quasi-experimental) were excluded on the basis of methodological quality after the critical appraisal and agreement by the two independent reviewers. The Joanna Briggs Institute Critical Appraisal MASTARI Instrument for Randomized Controlled trials/ Experimental studies, and The Joanna Briggs Institute data extraction tools were used to critically appraise, and extract data from the ten included randomized controlled trials. The two reviewers who performed the critical appraisal were qualified critical care professional nurses and experts in research methodology. These reviewers conducted the critical appraisal independently to ensure the objectivity of the process. Appropriate ethical considerations were maintained throughout the process of the research study. The results indicated that 80 percent of the included studies were conducted in adult intensive care units while 20 percent were conducted in the neonatal intensive care units. Furthermore, 60 percent of the studies were conducted in the United States of America, 10 percent in France, a further 10 percent in Taiwan, another 10 percent in England and yet another 10 percfent was conducted in Australia and Newzealand. The included studies utilized more than one (multifaceted) implementation strategies to implement clinical practice guidelines in the intensive care units. The first most utilized were: printed educational materials; Information/ educational sessions/meetings; audit and feedback and champion/local opinion leaders; seconded by educational outreach visits; and computer or internet usage. Third most used were active/passive reminders; systems support; academic detailing/ one-on-one sessions teleconferences/videoconferences and workshops/in services. Fourth most used were ollaboration/interdisciplinary teams; slide shows, teleconferences/videoconferences and discussions. Fifth most used were practical training; monitoring visits and grand rounds. However all the strategies were of equal importance. Conclusively, the included studies utilized multifaceted implementation strategies. However, no study indicated the use of a guideline for the implementation strategies in the process of clinical practice guidelines implementation. The systematic review developed a draft guideline for clinical practice guideline implementation strategies in the intensive care units. The guideline will enhance effective implementation of clinical practice guidelines in such a complex environment.
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- Date Issued: 2014