Articles by Author: L Rogers

Search results for L Rogers

We found 29 results for you
  1. Bathymetry and sediment type effects on catch rates of <em>Austroglossus pectoralis</em> (Soleidae) on the inner central Agulhas Bank

    Bathymetry and sediment type effects on catch rates of <em>Austroglossus pectoralis</em> (Soleidae) on the inner central Agulhas Bank

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Catch rates of Agulhas sole Austroglossus pectoralis from bottom trawls conducted during research surveys over the period 1986–1992 were compared to bathymetry and sediment types. The boundaries of sole distribution are influenced by water depth, current dynamics and the nature...
  2. WETLANDS AS ACCRETING SYSTEMS: ORGANIC CARBON

    WETLANDS AS ACCRETING SYSTEMS: ORGANIC CARBON

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Accretion of organic carbon in a wetland occurs when inputs of allochthonous organic matter and primary production exceed losses by heterotrophic respiration and export via the outflow. Although both dissolved and particulate organic matter (DOM, POM) are produced, most accretion...
  3. WETLANDS AS ACCRETING SYSTEMS: WASTEWATER TREATMENT

    WETLANDS AS ACCRETING SYSTEMS: WASTEWATER TREATMENT

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Considerable attention has been directed in the last decade to the use of wetlands for wastewater treatment. They are generally very effective in reducing (by up to 95%) the concentrations of nitrogen, pathogenic bacteria and heavy metals but their efficiencies...
  4. PHYSICAL, CHEMICAL AND BIOTIC RESPONSES TO DECREASING WATER DEPTH IN A HIGHVELD PAN FOLLOWING WET AND DRY SUMMERS

    PHYSICAL, CHEMICAL AND BIOTIC RESPONSES TO DECREASING WATER DEPTH IN A HIGHVELD PAN FOLLOWING WET AND DRY SUMMERS

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    The classification of highveld pans by Geldenhuys (1982) emphasized the spatial diversity of morphology, vegetation and fauna. However, since the characteristics of individual pans also change seasonally and over longer term wet/dry cycles, he called for more detailed limnological studies...
  5. ENVIRONMENTAL CORRELATES OF PLANT SPECIES DISTRIBUTION ON THE NYL RIVER FLOODPLAIN

    ENVIRONMENTAL CORRELATES OF PLANT SPECIES DISTRIBUTION ON THE NYL RIVER FLOODPLAIN

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    The envisaged construction of a dam on a major tributary of the Nyl River will alter the hydrological regime with consequent effects on the structure and functioning of the downstream floodplain ecosystem (Nylsvley). Attempts to minimise this impact will be...
  6. Obituary

    Obituary

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
  7. Personal coping strategies for managing the side effects of antiretroviral therapy among patients at an HIV/AIDS clinic in Uganda

    Personal coping strategies for managing the side effects of antiretroviral therapy among patients at an HIV/AIDS clinic in Uganda

    Item type: Journal Article • Journal: African Journal of AIDS Research
    The side effects of antiretroviral (ARV) medications negatively impact patients’ quality of life and adherence to treatment. This study describes the burden of side effects from ARV treatment as experienced by a sample of HIV/AIDS patients and identifies the personal...
  8. Developing a protocol for managing the biophysical condition of a water management area: the Sabie catchment case study

    Developing a protocol for managing the biophysical condition of a water management area: the Sabie catchment case study

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Recent modification of the South African Water Law spells out fundamental changes for the way the country's water resources will be managed in the future. One of the most significant mandates is the establishment of Catchment Management Agencies (CMAs) and...