Articles by Author: N S Levitt

Search results for N S Levitt

We found 20 results for you
  1. The effects of kelp harvesting on its regrowth and the understorey benthic community at Danger Point, South Africa, and a new method of harvesting kelp fronds

    The effects of kelp harvesting on its regrowth and the understorey benthic community at Danger Point, South Africa, and a new method of harvesting kelp fronds

    Item type: Journal Article • Journal: South African Journal of Marine Science
    At Danger Point, South Africa, mariculture of the abalone Haliotis midae has led to increased demand for freshly harvested kelp Ecklonia maxima. This study estimates the biomass of E. maxima available for harvesting, investigates the effects of harvesting on the...
  2. The influence of upwelling on South African west coast seaweeds

    The influence of upwelling on South African west coast seaweeds

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Upwelling from the Benguela Current system on the South African west coast has produced a seaweed flora distinct from that in the region east of Cape Agulhas. The origins of the major red algal component of the West Coast flora...
  3. Potential harvestable biomass of four carrageenan-producing seaweeds of the South-Western Cape, South Africa

    Potential harvestable biomass of four carrageenan-producing seaweeds of the South-Western Cape, South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Four species of carrageenophytes were surveyed to determine the harvestable biomass of populations in the South-Western Cape, South Africa. Three species, Aeodes orbitosa, Gigartina polycarpa and Sarcothalia stiriata occur in sufficient quantities to be harvested, with summer fresh mass standing...
  4. A case of generalised allergic reaction to human insulin

    A case of generalised allergic reaction to human insulin

    Allergic reactions to insulin are distinctly unusual with recombinant human insulin. When they occur, however, they can be associated with severe symptoms, making it difficult to treat patients who are insulin-dependent. We report here on a patient with generalised allergy...
  5. Estimating the burden of disease attributable to diabetes in South Africa in 2000

    Estimating the burden of disease attributable to diabetes in South Africa in 2000

    Objectives. To estimate the burden of disease attributable to diabetes by sex and age group in South Africa in 2000.
  6. Amiodarone-induced thyroid dysfunction

    Amiodarone-induced thyroid dysfunction

    Background. Little is known about the frequency of thyroid dysfunction (TD) associated with amiodarone therapy in southern Africa.