Articles by Keyword: Pollution

Search results for Pollution

We found 63 results for you
  1. Soils and the environment: the past 25 years

    Soils and the environment: the past 25 years

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Local work on selected environmental impacts on soil quality and the role of soils in the attenuation of environmental pollution is reviewed. Examples of negative impacts from mining, industries, urbanization, agriculture and forestry abound. The safe and sustainable use of...
  2. EFFECT OF CATTLE DIP CONTAINING TOXAPHENE ON THE FAUNA OF A SOUTH AFRICAN RIVER

    EFFECT OF CATTLE DIP CONTAINING TOXAPHENE ON THE FAUNA OF A SOUTH AFRICAN RIVER

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    In August 1978 the Hluhluwe River, which runs through the Hluhluwe Game Reserve (Natal, South Africa), was polluted by toxaphene from a cattle dip tank. Faunal surveys were conducted to determine the impact of the insecticide on the fish and...
  3. THE EFFECT OF SEASON ON A BIOTIC WATER QUALITY INDEX: A CASE STUDY OF THE YELLOW JACKET AND MAZOWE RIVERS, ZIMBABWE.

    THE EFFECT OF SEASON ON A BIOTIC WATER QUALITY INDEX: A CASE STUDY OF THE YELLOW JACKET AND MAZOWE RIVERS, ZIMBABWE.

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    The effect of season on the South African Scoring System (SASS) biotic index for rapid assessment of water quality using benthic macroinvertebrates was investigated using the Yellow Jacket and Mazowe Rivers in Zimbabwe as a case study. Several impacts in...
  4. Groundwater quality monitoring around Bass Lake, Betty's Bay, South Africa

    Groundwater quality monitoring around Bass Lake, Betty's Bay, South Africa

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The study involves the analysis of groundwater around Bass Lake, part of a fragile black water lake system situated along a narrow coastal plain in the southern Cape, in order to establish the quality of the water and to identify...
  5. Bioaccumulation of selected inorganic substances in the tissue of <em>Oreochromis shiranus</em> from Bunda Dam, Malawi

    Bioaccumulation of selected inorganic substances in the tissue of <em>Oreochromis shiranus</em> from Bunda Dam, Malawi

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    A study to assess and monitor the concentrations of sulphate, sodium, magnesium, calcium, chloride, iron and nitrate in Bunda Dam was carried out from May to November 1998. The same parameters, except nitrate and chloride, were also determined in the...
  6. Effects of human activities on the Waterval River, Vaal River catchment, South Africa

    Effects of human activities on the Waterval River, Vaal River catchment, South Africa

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Rand Water's chemical water quality data from 1991 to 2000 were used to assess the water quality of the Waterval River, which contributes about 111 x 106m3 of water to the Vaal River annually. Due to a biological community's ability...
  7. The phytoplankton of Great Bitter Lake, Egypt, including the impacts of nutrient-laden and heated effluents

    The phytoplankton of Great Bitter Lake, Egypt, including the impacts of nutrient-laden and heated effluents

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    A year-long survey of the phytoplankton and nutrients in Great Bitter Lake indicates that this is a severely eutrophic lake. Chlorophyll levels were consistently high (>30μg/l), especially in summer (>90μg/l). The phytoplankton community comprised mostly diatoms and blue-green algae, although...
  8. Joint action toxicity of spent lubrication oil and laundry detergent against <em>Poecilia reticulata</em> (Telostei: Poeciliidae)

    Joint action toxicity of spent lubrication oil and laundry detergent against <em>Poecilia reticulata</em> (Telostei: Poeciliidae)

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Single and joint action bioassays using spent lubrication oil, laundry detergent and a mixture of both (based on a 1:1 ratio of their 96h LC50 values) against the guppy Poecilia reticulata were carried out. On the basis of 96h mortality...
  9. Physico-chemical conditions and macroinvertebrate fauna in the River Nile from Aswan to Cairo

    Physico-chemical conditions and macroinvertebrate fauna in the River Nile from Aswan to Cairo

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    This paper examines the distribution of benthic macroinvertebrates in relation to physico-chemical conditions along 1 035km of the River Nile from Aswan High Dam to Al Kanater Barrage, Cairo. Total Dissolved Salts and several individual chemical variables showed positive linear...
  10. Acute effects of Cu on oxygen consumption and 96 hr-LC<sub>50</sub> values in the freshwater fish <em>Tilapia sparrmani</em> (Teleostei: Cichlidae) in Mooi River hard water, South Africa

    Acute effects of Cu on oxygen consumption and 96 hr-LC<sub>50</sub> values in the freshwater fish <em>Tilapia sparrmani</em> (Teleostei: Cichlidae) in Mooi River hard water, South Africa

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The median lethal copper (Cu) concentration (96 hr-LC50) values for acute Cu toxicity for Tilapia sparrmanii (live mass: 30 ± 8g) in Mooi River hard water of dolomitic origin at 20 °C, pH 7.9, was 68.1 μmol l−1. At this...