Articles by Keyword: Environmental Impact

Search results for Environmental Impact

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  1. DETRIMENTAL EFFECTS OF FENTHION (QUELETOX® UL), USED TO CONTROL RED-BILLED QUELEA (<em>QUELEA QUELEA</em>), ON RHEOPHILIC BENTHIC MACROINVERTEBRATES IN THE ORANGE RIVER

    DETRIMENTAL EFFECTS OF FENTHION (QUELETOX® UL), USED TO CONTROL RED-BILLED QUELEA (<em>QUELEA QUELEA</em>), ON RHEOPHILIC BENTHIC MACROINVERTEBRATES IN THE ORANGE RIVER

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    The relative abundance of rheophilic macroinvertebrates in the Orange River was assessed before and 15 hrs after two aerial applications of fenthion (QUELETOX® UL) above roosting sites of the red-billed quelea (Quelea quelea). The first treatment had no detectable effect...
  2. Anaesthetic gases: environmental impact and alternatives

    Anaesthetic gases: environmental impact and alternatives

    Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia
    Little consideration has been given to the environmental impact of gaseous anaesthetic use. All currently used volatile anaesthetics are halogenated and chemically similar to chlorofluorocarbons (CFCs), giving them the potential to impact the environment negatively via both ozone depletion and...
  3. Sustainable agriculture practices and livelihoods in pro-poor smallholder farming systems in southern Africa

    Sustainable agriculture practices and livelihoods in pro-poor smallholder farming systems in southern Africa

    Climate variability and change threaten and impact negatively on biodiversity, agricultural sustainability, ecosystems, and economic and social structures – factors that are all vital for human resilience and wellbeing. To cope with these challenges, embracing sustainability in food production is...
  4. Sustainable development practices for the hotel industry in Nigeria: Implications for the Ilaro area of Ogun State

    Sustainable development practices for the hotel industry in Nigeria: Implications for the Ilaro area of Ogun State

    Item type: Journal Article • Journal: Research in Hospitality Management
    Sustainable development practices of 15 hotels were investigated in this study in which a 41 point questionnaire, prepared in 10 sub-scales, was administered to 350 respondents selected from employees of the hotels and residents of the host community to ascertain...
  5. Conservation buffer sizes derived from movement data of adult Cape vultures (<em>Gyps coprotheres</em>) in South Africa

    Conservation buffer sizes derived from movement data of adult Cape vultures (<em>Gyps coprotheres</em>) in South Africa

    Item type: Journal Article • Journal: African Zoology
    The endangered Cape vulture (Gyps coprotheres) is facing a new emerging threat, e.g. wind energy development. Given their vulnerability to wind energy infrastructure, there is a necessity to establish proactive measures that could potentially mitigate future collisions, such as conservation...
  6. Role of Eucalypt Plantations in Timber Supply and Forest Conservation in Sub-Saharan Africa

    Item type: Journal Article • Journal: South African Forestry Journal
    The role of eucalypt plantations in timber supply and forest conservation in Sub-Saharan Africa was investigated. The annual destruction of 11,5 million ha of tropical forest is highlighted, the various causes indicated and the controversy whether fast-growing plantations and woodlots...
  7. Conservation Developments in South African Forestry

    Item type: Journal Article • Journal: South African Forestry Journal
    The historical development of environmental conservational activities within the South African Forestry Industry is followed, and the changing emphasis from the conservation of the remaining indigenous forests (pre-1900) to water conservation, to natural assets and unplanted areas is highlighted. The...
  8. Some factors effecting the dry matter production of lucerne cultivars

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Dry matter yields of lucerne cultivars were affected by different factors. A simple equation is given for predicting total dry matter yield of irrigated lucerne based on mean maximum temperatures in January.
  9. A survey of grazed and ungrazed grassland in the south‐eastern Transvaal highveld 2. Potential floristic composition and patterns of degradation

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The floristic composition of selected veld communities which, by virtue of their location were ungrazed but regularly burned, and which were judged to reflect potential floristic composition, was measured at 112 sites in the southeastern Transvaal highveld. Relevant environmental parameters...
  10. The use of degradation gradients for the assessment and ecological interpretation of range condition

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Multivariate procedures were used to subdivide the southern African climatic climax grasslands of the 700–800‐mm rainfall zone into relatively homogeneous grazing areas. A degradation gradient was constructed for each of these areas. This was done by means of centred PCA...